Flame-proof textile materials

FIELD: textiles, paper.

SUBSTANCE: invention relates to the textile industry, and relates to flame-proof textile materials. The flame-proof textile material comprises cellulosic fibres and fibres with their inherent flame-resistance. The flame-proof textile material can be processed with one or more flame-proof means to impart flame-resistance to cellulosic fibres.

EFFECT: invention enables to increase flame-resistance of textile material, while providing comfort when it is worn.

31 cl, 1 tbl, 1 ex

 

The technical FIELD TO WHICH the INVENTION RELATES.

The present patent application is directed to flame retardant textile materials.

The LEVEL of TECHNOLOGY

Fire resistant fabric suitable in various applications, including the production of protective clothing worn by staff of various industries or professions, such as military-related electricity (for protection against electric arc), petrochemical production and elimination of emergency situations. Pulp or mixed pulp tissue, usually are preferred for such protective garments due to the relative ease with which these fabrics can be made fire resistant, and relative comfort when wearing these tissues.

Despite the popularity of pulp or mixed pulp and fire-resistant fabrics, existing tissue have limitations. The measure of the Flammability of many pulp and fire-resistant fabrics is insufficient to meet the necessary requirements of specific industries. In order to meet these requirements, often used fabric with inherent fire resistance (e.g., meta-aramid fiber, such as fiber NOMEX® other .I.du Pont de Nemours and Company), which increase the cost of fabrics. Therefore, there remains a need to provide alternative fire the tissue, who would be able to meet accepted standards for fire resistance.

The DISCLOSURE description of the INVENTION

In the first series of embodiments the invention provides textile materials made from yarns comprising cellulosic fibers, and yarns including polyoxadiazole fiber. In particular, the invention provides a textile material having a first surface and a second surface opposite the first surface. The textile material includes a set of first threads located in the first direction. The first yarns comprise pulp fibers. The textile material also includes a set of second threads located in the second direction essentially perpendicular to the first direction. The latter thread include polyoxadiazole fiber. The first and second threads are with an organization drawing, in which the first thread is mainly located on the first surface of the textile material, and the second thread is mainly located on the second surface of the textile material. This thread provides a fabric in which at least one surface of the fabric shows fire-resistant properties inherent polyoxadiazole fibers (i.e. the second surface of the textile material, which are primarily based second thread), t is time, as you use less polyoxadiazole fibers, than would be used for the production of a textile material, in which both sets of threads are identical (i.e. both sets of threads contain polyoxadiazole fiber). Moreover, with the inclusion of cellulose fibres such cloth can be comfortable, as I used to be staff.

In an additional series of embodiments the invention provides a textile material treated with one or more fire retardant means for imparting textile materials, greater fire resistance. These textile materials may include cellulose fibers, in addition to one or more fibre with inherent fire resistance (e.g., polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, meta-aramid fibers, para-aramid fibers and their mixtures). I believe that these additional embodiments are desirable because of the fact that they provide a fire resistant textile material, which uses a lower amount of fiber with inherent fire resistance, which tend to be relatively expensive, at the same time provides a textile material, which is comfortable when worn (e.g., textile material exhibiting favorable softness to the touch).

Thus, in another embodiment the finding provides a textile material, includes a set of first threads. The first thread includes cellulose fibers and fibers selected from the group consisting of polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, poly(phenylenesulfonyl) fibers, meta-aramid fibers and mixtures thereof. Textile material further includes a finish applied to the textile material. Finish includes fosforsoderzhashchie connection, polymerized with at least part of the cellulose fibers. Fosforsoderzhashchie compound is a product obtained by heat treatment and oxidation reaction mixture comprising (i) a first reagent selected from the group consisting of salts tetrahydrocortisone, salts of condensates tetrahydrocortisone and mixtures thereof, and (ii) cross-linking agent. The cross-linking agent may be selected from the group consisting of urea, guanidine, ganymedian, glycoluril, ammonia, ammonia-formaldehyde adducts, ammonia acetaldehyde adducts, ammonium Butyraldehyde adducts, ammonium goralnik adducts, glucosamine, polyamines, ethers of glycidyl, isocyanates, protected isocyanates and mixtures thereof.

In another embodiment the invention provides a textile material having a first surface and a second surface is here, opposite the first surface. The textile material includes a set of first threads located in the first direction, and a set of second threads located in the second direction essentially perpendicular to the first direction. The first yarns include cellulose fibers, and the second yarns comprise fibers selected from the group consisting of polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, meta-aramid fibers, para-aramid fibers and mixtures thereof. Textile material further includes a finish applied to the textile material. Finish includes fosforsoderzhashchie connection, and fosforsoderzhashchie connection includes many groups of pentavalent phosphine oxide, having covalently attached thereto amide linking group. Moreover, at least some groups of pentavalent phosphine oxide have three covalently attached by an amide linking group. In the textile material of the first and second threads are with an organization drawing, in which the first thread is mainly located on the first surface of the textile material, and the second thread is mainly located on the second surface of the textile material.

In another embodiment the invention provides a textile the first material, having a first surface and a second surface opposite the first surface. The textile material includes a set of first threads located in the first direction, and a set of second threads located in the second direction essentially perpendicular to the first direction. The first yarns include cellulose fibers, and the second yarns comprise fibers selected from the group consisting of polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, meta-aramid fibers, para-aramid fibers and mixtures thereof. Textile material further includes a finish applied to the textile material, and the finish includes fosforsoderzhashchie connection, polymerized with at least part of the cellulose fibers. Fosforsoderzhashchie compound is a product obtained by heat treatment and oxidation reaction mixture comprising (i) a first reagent selected from the group consisting of salts tetrahydrocortisone, salts of condensates tetrahydrocortisone and mixtures thereof, and (ii) cross-linking agent. The cross-linking agent may be selected from the group consisting of urea, guanidine, ganymedian, glycoluril, ammonia, ammonia-formaldehyde adducts, ammonia acetaldehyde adducts, ammonium Buti the aldehyde adducts, ammonium goralnik adducts, glucosamine, polyamines, ethers of glycidyl, isocyanates, protected isocyanates and mixtures thereof. In the textile material of the first and second threads are with an organization drawing, in which the first thread is mainly located on the first surface of the textile material, and the second thread is mainly located on the second surface of the textile material.

The IMPLEMENTATION of the INVENTION

As indicated above, the invention provides a flame-retardant textiles. As used herein, the term "flame-retardant" refers to a material that burns slowly or is self-extinguishing after removal of an external source of ignition. The fire resistance of textile materials can be measured in any suitable test method, such as described by the National Fire protection Association (NFPA) 701, entitled "Standard Methods of Fire Tests for fire Resistance Flame Spread in Tissues and Films", ASTM D6413, entitled "Standard Test Method for fire Resistance of Textiles (vertical test)", NFPA 2112, entitled "Standard for Fire Protective Garments for Protection of Technical Personnel from the Fire", ASTM F1506, entitled "Standard Operating characteristics of Ognisty is their Textile Materials for Ready-to-wear when Using Using Electricity, which Are Short-term Effect of the Electric Arc and Similar Thermal Hazards" and ASTM F1930, entitled "Standard Test Method for evaluation of flame resistant Clothing for Protection against Recreated the Conditions of the Fire Using Equipped Dummy".

Textile materials according to the invention typically include tissue obtained from one or more sets or types of threads. The textile materials may be obtained from one set or type of thread (e.g., the fabric can only be obtained from yarns comprising a blend of cellulosic fibers and fibers with inherent fire resistance, such as polyoxadiazole fiber or textile material may be derived from several sets, or different types of threads (e.g., tissue can be obtained from the first set of yarns comprising cellulosic fibers and polyamide fibers, and the second set of strands, including fiber with inherent fire resistance, such as polyoxadiazole fiber).

The threads used in the manufacture of textile materials according to the invention can be filaments of any suitable type. Preferably, the threads are per single yarn. In such embodiments per single yarn can be obtained from one type of staple fibers (e.g., per single yarn, the floor is built only of cellulose fibers, or per single yarn obtained only from fibers with inherent fire resistance), or per single yarn may be made of a blend of two or more different types of staple fibers (e.g., per single yarn obtained from a blend of cellulosic fibers and thermoplastic synthetic staple fibers such as polyamide fibers). This per single yarn may be obtained by any suitable spinning method, such as ring spinning, spinning in the air stream or open-end spinning. In specific embodiments the threads are yarns spun using ring-spun process (i.e. threads are a yarn ring spinning method).

Textile materials according to the invention may be of any suitable design. In other words, the yarns forming the textile material may be in any suitable organization of the figure in the production of fabric. Preferably, the textile material is provided in a woven structure, such as plain weave, weave "Gunny", twill weave, satin weave or satin weave. Suitable smooth weave include, but are not limited to, stick rip stop weave obtained by weaving at regular intervals additional strands or reinforcing yarns in the warp, weft or both in the OS is ove, and in the weft of the textile material during formation. Suitable twill include osnovanyonyj and filling-layers of twill weave, such as 2/1, 3/1, 3/2, 4/1, 1/2, 1/3 or 1/4 of twill weave. In specific embodiments of the invention, such that when the textile material formed from two or more sets or different types of threads, the threads are of such an organization drawing, in which one type of thread is mainly on one surface of a textile material. In other words, one surface of a textile material mainly formed from one type of thread. Appropriate organization of pattern or design that provide such textile material, include, but are not limited to, satin weave, satin weave and twill weave, in which on one side of the fabric decks weft threads and decks the warp threads are of different lengths.

As mentioned above, the textile materials of the invention contain a filament, comprising cellulose fibers. As used herein, the term "cellulosic fiber" is used to specify the fibers composed of or derived from cellulose. Examples of suitable cellulose fibers include cotton, rayon, flax, jute, hemp, cellulose acetate and to the munali, the mixture or blend. Preferably, the cellulosic fibers include cotton fibers.

In those embodiments textile material comprising cotton fibers, cotton fibers can be any suitable varieties. Usually there are two types of cotton fibers, which are easily available for commercial use in North America: a kind of American Upland (Gossypium hirsutum) and a variety of American Pima (Gossypium barbadense). Cotton fibers are used as the cellulose fibers of the invention can be cotton fibers or varieties of American Upland varieties, American Pima, or a combination, mixture or blendon two. Typically cotton fiber varieties of American Upland, which comprise the majority of the cotton used in the apparel industry, have a length in the range from about 0,875 inches to about 1.3 inches, while less common fiber varieties of the American Pima have a length in the range from about 1.2 inches to about 1.6 inches. Preferably at least some of the cotton fibers used in the invention are varieties of American Pima, which are preferred due to their greater, more universal length.

In those embodiments in which the textile material includes the cellulose fibers, the pulp fibers may be present in the filaments in any suitable amount. For example, in specific embodiments, the cellulose fibers may include about 35% or more (e.g., about 50% or more by weight of fibers present in one of the sets or types of threads in the production of a textile material. In specific embodiments of the pulp fibers may include about 100% by weight of the fibers present in one of the sets or types of threads used in the manufacture of textile material. In other specific embodiments, the thread may include mecellose fiber. In such embodiments the cellulose fibers may include from about 35% to about 100% (e.g., from about 50% to about 90%) by weight of the fibers present in one of the sets or types of threads used in the manufacture of textile material. In such embodiments, the remaining strands can be obtained from any suitable mecellose fibers or combinations recellular fibers, such as thermoplastic synthetic fibers and fiber with inherent fire resistance specified above.

In those embodiments in which the textile material includes cellulose fibers, the cellulose fibers may be present in the textile material in any suitable amount. For example, in specific embodiments of the pulp fibers may include OK the lo 15% or more, about 20% or more, about 25% or more, about 30% or more, or about 35% or more by weight of fibers present in the textile material. While the inclusion of the cellulose fibers can improve the comfort of a textile material (e.g., to improve the characteristics of softness to the touch and vlagoemkosti), the inclusion of a large number of cellulose fibers may adversely affect the wear resistance of a textile material. Therefore, you may want to limit the amount of cellulose fibers in the textile material in order to achieve the required level of wear resistance. Thus, in specific embodiments of the pulp fibers may include about 75% or less, about 70% or less, about 65% or less, about 60% or less, about 55% or less, about 50% or less, or about 45% or less by weight of the fibers present in the textile material. More precisely, in specific embodiments of the pulp fibers may include from about 15% to about 75%, from about 20% to about 70%, from about 25% to about 65% (e.g., from about 25% to about 60%, from about 25% to about 55%, from about 25% to about 50% or from about 25% to about 45%, from about 30% to about 60% (e.g., from about 30% to about 55%, from about 30% to about 50% or from about 30% to about 45%or from about 35% to about 55% (e.g., from about 35% to about 50% or from about 35% to about 45%) by weight of the fibers present in textile the m material.

In specific embodiments of the invention, one or more threads in the textile material may include a thermoplastic synthetic fibers. For example, the thread may include a blend of cellulosic fibers and thermoplastic synthetic fibers. These thermoplastic synthetic fibers, as a rule, are included in the textile material to increase its wear resistance in relation to, for example, industrial washing. In particular thermoplastic synthetic fibers tend to be quite resistant to abrasive conditions and stringent washing, used in industrial Laundry equipments, and their inclusion in, for example, containing cellulose fiber per single yarn can increase the wear resistance of the specified yarn to such conditions. This increased wear resistance of the filament, in turn, leads to increased wear resistance of a textile material. Suitable thermoplastic synthetic fibers include, but without limitation, polyester fibers (e.g., poly(ethyleneterephthalate) fiber, poly(propyleneamine) fiber, poly(Triethylenetetramine) fiber), poly(butylanthraquinone) fibers and their blends), polyamide fibers (e.g., fiber nylon 6 fibers nylon 6,6 fibers nylon 4,6 and nylon fiber 12), polyvinyl alcohol fibers, and combinations thereof, the mixture is whether the hood.

In those embodiments in which the textile material includes a thermoplastic synthetic fibers, thermoplastic synthetic fibers may be present in one of the sets or types of threads used in the manufacture of textile material in any suitable amount. In specific preferred embodiments thermoplastic synthetic fibers comprise about 60% or less or about 50% or less by weight of the fibers present in one of the sets or types of threads used in the manufacture of textile material. In specific preferred embodiments thermoplastic synthetic fibers comprise about 5% or more, or about 10% or more by weight of fibers present in one of the sets or types of threads used in the manufacture of textile material. Thus, in specific preferred embodiments thermoplastic synthetic fibers include from about 0% to about 65%, from about 5% to about 60%, or from about 10% to about 50% by weight of the fibers present in one of the sets or types of threads used in the manufacture of textile material.

In those embodiments in which the textile material includes a thermoplastic synthetic fibers, thermoplastic synthetic fibers may be present in the textile material in any suitable quantity is as. For example, in specific embodiments of thermoplastic synthetic fibers can include about 1% or more, about 2.5% or more, about 5% or more, about 7.5% or more, or about 10% or more by weight of fibers present in the textile material. Thermoplastic synthetic fibers can include about 40% or less, about 35% or less, about 30% or less, about 25% or less, about 20% or less, or about 15% or less by weight of the fibers present in the textile material. More precisely, in specific embodiments of thermoplastic synthetic fibers can include from about 1% to about 40%, from about 2.5% to about 35%, from about 5% to about 30% (e.g., from about 5% to about 25%, from about 5% to about 20% or from about 5% to about 15%or from about 7.5% to about 25% (e.g., from about 7.5% to about 20%, or from about 7.5% to about 15%) by weight of the fibers present in the textile material.

In one preferred embodiment, the textile material consists of many strands, including a blend of cellulosic fibers and synthetic fibers (for example, synthetic staple fibres). In this embodiment of the synthetic fibers can be any of the above, and polyamide fibers are especially preferred. In this embodiment the cellulose fibers include from about 50% to about 90% (e.g., from about 60% to about 90%, from about 65% to about 90%,from about 70% to about 90%, or from about 75% to about 90%) by weight of the fibers, present in the yarn, and polyamide fibers include from about 10% to about 50% (e.g., from about 10% to about 40%, from about 10% to about 35%, from about 10% to about 30%, or from about 10% to about 25%by weight of the fibers present in the yarn.

As indicated above, a particular embodiment of the textile materials of the invention contain threads, including fiber with inherent fire resistance. As used herein, the term "fiber with inherent fire resistance" is used to refer to synthetic fibers, which are due to the chemical composition of the material from which they are made, have a fire without the need for additional fire-retardant treatment. In such embodiments the fiber with inherent fire resistance can be any fiber with inherent fire resistance, such as polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, meta-aramid fibers, para-aramid fibers, polyvinylimidazole fibers, polybenzimidazole fibers, polybenzoxazole fibers, melamine-formaldehyde polymer fibers, phenol-formaldehyde polymer fibers, oxidized polyacrylonitrile fibers, polyamideimide fibers and their combinations, mixtures or blends. the specific embodiments of the fiber with inherent fire resistance is preferably selected from the group consisting of polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, meta-aramid fibers, para-amide fibers and their combinations, mixtures or blends. In more specific embodiments of the fiber with inherent flame retardant may be selected from the group consisting of polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers and their combinations, mixtures or blends. In specific preferred embodiments of the fiber with inherent fire resistance include polyoxadiazole fiber.

As used herein, the term "polyoxadiazole fibers" refer to fibers containing polymer comprising oxadiazole group or unit. As will be clear to experts in the art, the term "oxadiazol" refers to a five-membered aromatic heterocyclic groups containing an oxygen atom, two nitrogen atom and two carbon atoms, in which at least one of the nitrogen atoms separated from the oxygen atom by a carbon atom. Thus, there are two possible oxadiazoline group: 1,3,4-oxadiazoline group, which has the structure

and 1,2,4-oxadiazoline group, which has the structure

.

Polyoxadiazole fiber used in the invention may contain a polymer comprising 1,3,4-oxadiazolyl group, 1,2,4-oxadiazolyl group or a mixture of the two. The polymer in polyoxadiazole fibers may contain any suitable repeating group or unit, and allenbyi group are particularly preferred. Thus, polyoxadiazole fiber may include polyarylene-1,3,4-oxadiazolines polymer which contains a repeating unit having the structure

where R represents a non-hydrogen Vice aryl group, and n is an integer from 0 to 4, or polyarylene-1,2,4-oxadiazolyl polymer which contains a repeating unit having the structure

where R represents a non-hydrogen Vice aryl group, and n is an integer from 0 to 4. Preferably polyoxadiazole fibers contain polyarylene-1,3,4-oxadiazolines polymer, such as poly(2-(para-phenylene)-1,3,4-oxadiazol), which corresponds to a polymer containing a repeating unit having the structure shown above for polyarylene-1,3,4-oxadiazoline polymers in which n is 0.

Fiber with inherent flame retardant may be present in one of the sets or types of threads used in the manufacture of which allenii textile material, in any suitable amount. For example, in specific embodiments of the fiber with inherent flame retardant may include about 100% by weight of the fibers present in one of the sets or types of threads used in the manufacture of textile material in any suitable amount. In those embodiments in which the textile material includes filaments, containing a blend of cellulose fibers and fiber with inherent fire resistance, fiber with inherent resistance can include about 5% or more, about 10% or more, about 20% or more, about 30% or more, about 40% or more, or about 50% or more by weight of fibers present in the yarn. Thus, in such embodiments the fiber with inherent flame retardant may include from about 5% to about 95%, or from about 10% to about 65% by weight of the fibers present in the yarn. More preferably in this embodiment the fiber with inherent flame retardant may include from about 20% to about 50% by weight of the fibers present in the yarn.

Fiber with inherent flame retardant may be present in the textile material in any suitable amount. Usually the number of fibers with inherent fire resistance included in the textile material will depend on the desired properties of the final textile material. In specific embodiments of the fiber with inherent fire resistance which may include about 20% or more, about 25% or more, about 30% or more, about 35% or more, about 40% or more, or about 45% or more by weight of fibers present in the textile material. In specific embodiments of the fiber with inherent flame retardant may include about 75% or less, about 70% or less, about 65% or less, about 60% or less, about 55% or less, about 50% or less, about 45% or less, or about 40% or less by weight of the fibers present in the textile material. Thus, in specific embodiments of the fiber with inherent flame retardant may include from about 20% to about 70%, from about 25% to about 75% (e.g., from about 25% to about 60%, from about 25% to about 50%, from about 25% to about 45%, or from about 25% to about 40%, from about 30% to about 70%, from about 35% to about 65%, from about 40% to about 60%, or from about 45% to about 55% by weight of the fibers present in the textile material.

In one potentially preferred embodiment of the textile material includes a set of first threads located in the first direction. The first thread includes cellulose fibers and may thermoplastic synthetic fibers. The percentage of cellulose fibers in the first thread is preferably from 35% to 100%. Textiles also includes a set of second threads located in the second direction essentially perpendicular to the first direction. The second thread includes the t fiber with inherent fire resistance. The number of fibers of the inherent resistance of the second filament is preferably from 10% to 100%. The rest of the fiber in the second thread may be cellulose fibers, thermoplastic synthetic fibers or any other textile fibres or their blends.

As indicated above, the invention also provides a textile material treated with one or more flame retardant agent or finishes to give the textile material of greater resistance. Typically, such processing flame retardant agent or finish applied to the textile material containing cellulose fibers, to transmit the flame retardant properties of the cellulose part of the textile material. In such embodiments, the fire retardant treatment means or finish can be any suitable processing. Suitable treatments include, but are not limited to, halogenated flame retardant tools (e.g., brominated or chlorinated flame retardant, based on the phosphorus flame retardant products based on the antimony flame retardant funds, nitrogen-containing flame retardant agents and their combinations, mixtures or blends.

In one preferred embodiment, the textile material includes cellulose fibers and processed based on the phosphorus flame retardant agent. In this embodiment the beginning of the textile material is applied salt tetrahydrocortisone, condensate salt tetrahydrocortisone or their mixture. As used in this application, the term "salt tetrahydrocortisone" refers to salts containing the cation tetrahydrocortisone (THF), which has the structure

including, but not limited to, chloride, sulfate, acetate, carbonate, borate and phosphate salts. As used herein, the term "condensate salt tetrahydrocortisone" (condensate THF) refers to the product obtained by the reaction of salts tetrahydrocortisone, such as described above, with a limited amount of cross-linking agent, such as urea, guanazole or biguanide, to obtain compounds in which at least some of the individual cations tetrahydrocortisone connected through their hydroxymethylene groups. The structure for such a condensate obtained with the use of urea below

.

The synthesis of such condensates is described, for example, Frank et al. (Textile Research Journal, November 1982, pages 678-693) and Frank et al. (Textile Research Journal, December 1982, pages 738-750). These condensates THF also commercially available, for example, as PYROSAN® CFR Ave Emerald Performance Materials.

THF or condensate THF can be applied to the textile material in any suitable amount. As p is Avila, salt THF or condensate THF applied to the textile material in an amount which provides at least 0.5% (e.g., at least 1%, at least 1.5%, at least 2%, at least 2.5%of at least 3%, at least 3.5%of at least 4%, or at least 4,5%) of elemental phosphorus, calculated on the weight of the untreated textile material. Salt THF or condensate THF as a rule, is applied to the textile material in a quantity which provides less than 5% (e.g., less than 4.5%, less than 4%, less than 3.5%, less than 3%, less than 2.5%, less than 2%, less than 1.5% or less than 1%) of elemental phosphorus, calculated on the weight of the untreated textile material. Preferably the salt THF or condensate THF is applied to the textile material in a quantity which provides from about 1% to about 4% (e.g., from about 1% to about 3% or from about 1% to about 2%) of elemental phosphorus, calculated on the weight of the untreated textile material.

As soon as salt THF or condensate THF was applied to the textile material, salt THF or condensate THF and then reacted with cross-linking agent. The product obtained by this reaction is a cross-linked phosphorus-containing flame retardant polymer. The cross-linking agent is any suitable compound that pozvolyayuschee crosslinking and/or curing of THF. Suitable cross-linking agents include, for example, urea, guanidine (i.e. guanidine, its salt or a derivative of guanidine), ganymedian, glycoluril, ammonia, ammonia-formaldehyde adduct, ammonium-acetaldehyde adduct, ammonium Butyraldehyde adduct, ammonium globalny adduct, glucosamine, polyamine (e.g., polyethylenimine, polyvinylene, palifermin, polyethylenimine, polyacrylamide, chitosan, aminopolysaccharide), ethers of glycidyl, isocyanates, protected isocyanates, and combinations thereof. Preferably, the cross-linking agent is a urea or ammonia, and urea is the most preferred cross-linking agent.

The cross-linking agent may be applied to the textile material in any suitable amount. A suitable amount of cross-linking agent varies in terms of the weight of the textile material and its design. Typically, the cross-linking agent is applied to the textile material in a quantity of at least 0.1 percent (e.g., at least 1%, at least 2%, at least 3%, at least 5%, at least 7%, at least 10%, at least 15%, at least 18% or at least 20%), calculated on the weight of the untreated textile material. The cross-linking agent is also typically applied to t stilny material in quantities less than 25% (e.g., less than 20%, less than 18%, less than 15%, less than 10%, less than 7%, less than 5%, less than 3%, or less than 1%), calculated on the weight of the untreated textile material. In perhaps the preferred embodiment the cross-linking agent is applied to the textile material in an amount of from about 2% to about 7% based on the weight of the untreated textile material.

In order to accelerate the reaction of condensation of salt THF or condensate THF and the cross-linking agent described above reaction can be conducted at elevated temperatures. Time and elevated temperature used at this stage of curing, can be any suitable combinations of time and temperature that cause the reaction of THF or condensate THF and the cross-linking agent to the desired degree. Time and elevated temperature used at this stage, can also accelerate the formation of covalent bonds between cellulose fibers and phosphorus-containing condensation product, which is believed to contribute to the wear resistance processing flame retardant agent. However, care must be taken not using too high a temperature or too long curing time, which can lead to excessive reaction fire-proof means and cellulose fibers, which can weaken the goal is lulose fiber and textile material. Moreover, I believe that the elevated temperatures used at the stage of curing, can allow salt THF or condensate THF and cross-linking agent to diffuse through cellulose fibers, where they react with the formation of cross-linked phosphorus-containing flame retardant polymer among the fibers. Suitable temperature and time for this stage of curing will vary depending on the oven for curing and the speed with which heat is transferred to the textile material, but suitable conditions can vary in temperature from about 149°C (300°F) to about 177°C (350°F) and the time from about 1 minute to about 3 minutes.

When ammonia is used as a cross-linking agent, it is not necessary to use elevated temperatures for interaction salt THF or condensate THF and the cross-linking agent. In this case, the reaction can be carried out, for example, in gas-phase ammonia chamber at ambient temperature. A suitable method of education based on the phosphorus flame retardant products using this is based on the ammonia process is described, for example, in patent US 3900664 (Miller), the disclosure of which is incorporated herein by reference.

After curing salt THF or condensate THF and the cross-linking agent and conducting R is the stock to the desired degree of final textile material may be subjected to an oxidizing agent. Not wishing to be bound to any particular theory, I believe that this oxidation step converts the phosphorus in the product of condensation (i.e. the condensation product obtained by the reaction of salt THF or condensate THF and the cross-linking agent) of trivalent form in a more stable pentavalent form. I believe that the ultimate fosforsoderzhashchie connection (i.e. cross-linked phosphorus-containing flame retardant polymer) contains many groups of pentavalent phosphine oxide. In those embodiments in which was used for urea cross-linking salt THF or condensate THF, fosforsoderzhashchie connection includes amide linker group covalently associated with groups of pentavalent phosphine oxide, and believe that at least some groups of the phosphine oxide has three amide linker group covalently associated with them.

The oxidizing agent used at this stage can be any suitable oxidizing agent such as hydrogen peroxide, perborate sodium or sodium hypochlorite. The amount of oxidizing agent may vary depending on the actual materials used, but generally, the oxidizing agent is introduced into a solution containing at least 0.1% of the concentration (e.g., at least 0,5%, at least 0.8%, at least 1%, at least 2% or at least 3% concentration and less than 20% concentration (e.g., less than 15%, less than 12%, less than 10%, less than 3%, less than 2%, or less than 1% concentration) oxidizer.

After contacting the treated textile material with an oxidizing agent, cured textile material is preferably brought into contact with a neutralizing solution (e.g., caustic solution with a pH of at least 8, at least pH 9, at least pH 10, at least pH 11 or at least pH 12). The actual components of the caustic solution can vary widely, but include any appropriate components of a strong base such as lye. For example, sodium hydroxide (soda), potassium hydroxide (potash), calcium oxide (lime) or combinations thereof can be used in the neutralizing solution. The number of base depends on the size of the party and is determined ultimately desired pH level. A suitable amount of caustic soda in solution is at least 0.1% of the concentration (e.g., at least 0,5%, at least 0.8%, at least 1%, at least 2% or at least 3% concentration) and is less than 10% concentration (e.g., less than 8%, less than 6%, less than 5%, less than 3%, less than 2%, or less than 1% concentration). The time of contacting the treated textile material with a caustic solution varies, but generally stood the focus of at least 30 seconds (e.g., at least 1 min for at least 3 minutes, at least 5 minutes or at least 10 min). If necessary, neutralizing the solution can be heated (e.g., up to 75°C up to 70°C up to 60°C up to 50°C up to 40°C up to 30°With respect to room temperature).

If required, the textile material can be processed by one or more softening agent (also known as "softeners") to enhance the softness to the touch of the treated textile material. Moisturizing agent, selected for this purpose, must not have a detrimental effect on the Flammability of the final fabric. Suitable softeners include polyolefins, ethoxylated alcohols, ethoxylated essential oils, acylglycerides, bonds alkylamines, Quaternary alkylamines followed, halogenated waxes, halogenated esters, silicon compounds, and mixtures thereof.

To further enhance the softness of a textile material, the textile material optionally may be subjected to one or more machined surfaces. Mechanical surface treatment usually relieves tension to the fabric during the curing and processing of tissue, destroys the node threads, hardened in the course of curing, and increases the tensile strength of the treated fabric. Examples of suitable mechanical surface treatments the tees include the processing flow of air or high-pressure water (such as described in U.S. patent 4918795, U.S. patent 5033143 and U.S. patent 6,546,605), processing by the steam jet, sewing, bombardment by particles, cleaning the ice, rolling, washing stones, squeezing through the nozzle and processing mechanical vibration, sharp bending, shear or pressure. Non-shrink finish can be used instead of or in addition to one or more of the above processes to improve the softness of the fabric to the touch and to control shrinkage of the fabric. Can be used for additional mechanical processing, affecting the softness of the treated tissue, and that can follow non-shrink finish, including Napping of flannel, Napping of flannel marcovaldo wire with a spray of diamonds, non-abrasive polishing kit polishing against the embossed fabric, shot peening, sandblasting, brush processing, rolling brushes, ultrasonic mixing, finishing under the suede, embossed or patterned roller grinding and impact against or with other material such as the same or other fabric, abrasive substrates, steel wool, videos of diamond chips, rollers, tungsten carbide, or engraved runaway rollers or emery rollers.

The following additional examples illustrate the invention described above, but, of course, not to be taken by the AK in any way limiting its scope.

EXAMPLE

This example demonstrates the performance of fire-resistant textile material in accordance with the invention and compared its performance with those who show a particular commercially available fire resistant fabric.

Woven material (Sample 1) was made by the interweaving of a variety of first and second threads. The first thread, which were located in the direction of the fabric base, comprised of a blend of about 75% cotton fibers and about 25% nylon fibers, calculated on the total weight of the filament. The first thread was a spinning on the ring spinning machine yarn, per single yarn, with the number of cotton yarn 18. The second thread, which were located in the weft direction of the fabric comprised of 100% poly(oxadiazole) fibers (i.e. poly(2-(para-phenylene)-1,3,4-oxadiazoline) fibers). The fiber used in the second thread, is commercially available in varieties of staple fiber and is sold under the trade name ARSELON production JSC Svetlogorskiye", Svetlogorsk, Gomel region, Republic of Belarus. The second yarn is yarn besperemenno spinning, per single yarn, with the number of cotton yarn 13. Many first and second yarns were woven in snownational lane satin is a weave 4×1, which included approximately 52 wt.% the first thread and 48 wt.% the second thread. The resulting fabric had a mass of tissue approximately 6,69 oz per square threads contained approximately 80 main threads per inch and contained approximately 46 weft threads per inch.

The fabric prepared on a standard frame for continuous receipt of width after stages rasshifrovka, bleaching, mercerizing, washing and drying. Fabric is additionally painted in dark blue color on the standard frame for the painting of the width kovovymi dyes way thermosoling dyeing, including the processes of reduction and oxidation to effect dye on cellulose fibers.

The fabric used flame retardant processing as follows. Fabric skipped through the impregnating bath with precondensation salt tetrahydrocortisone (THF), urea and cationic softener before putting into the oven for curing. The salt concentration of THF was about 40% by weight of the composition of the solution.

Salt THF collaborated on the fabric with urea to obtain intermediate compound in which the phosphorus compound is present in its trivalent form. Such a reaction was carried out on the fabric at a temperature of about 166°C (330°F) for about 1 minute, which has resulted in the formation of covalent bonds condensate THF with cellulose fibers which, giving, therefore, greater durability fire-retardant treatment to leaching. The treated fabric is then skipped through the peroxide bath, in which the peroxide oxidizes phosphoric connection for fastening flame retardant compounds on the surface of the fabric and the conversion of trivalent phosphorus in its stable pentavalent form.

After the fire-retardant treatment, the fabric was again dried and passed for further processing. The fabric was placed on a tentering frame for decoration and was passed through the attenuator, which contained formaldehyde cleaning roller and the lubricant used high-density polyethylene. The fabric applied for stretching plate with about 3% excess and dried in ovens at approximately 138°C (280°F)for about 70 seconds.

After chemical finishing of fabrics subjected to mechanical processing through a set of air nozzles high pressure (40-90 psig barg), which caused vibration in the tissue, and which led to the softening of the tissue and improvement in tensile strength. This machining is described in detail in U.S. Patent US 4837902; US 4918795 and US 5822835, all Dischler. After machining, the fabric was passed through sanforization for sealing and pre-shrink the fabric.

For comparison purposes were obtained from two commercially available hognaston the e tissue. The first comparative fabric (Comparative Sample 1) was a commercially available flame retardant twill 3×1 7.5 oz per square thread so Westex. The woven material was obtained from a commercial overalls, acquired in 2008. The warp was a blend of 75% cotton and 25% nylon by weight, and weft threads were 100% cotton. I think that the fabric was processed based on THF way fire-retardant treatment by vulcanization in an ammonia environment described in the description, and subsequent mechanical processing.

The second comparative fabric (Comparative Sample 2) was a commercially available fire-resistant fabric is smooth weave from 6.0 oz per square threads. The fabric had the interweaving of 1×1, obtained using 2-filament yarn framework with a number of cotton cloth 30 and 2-filament weft yarns with the number of cotton cloth 30. Both yarn contained a blend of approximately 93% by weight meta-aramid fibers (i.e. fibers, NOMEX®, commercially available from DuPont), approximately 5% by weight para-aramid (i.e. fibers, KEVLAR®, commercially available from DuPont) and approximately 2% by weight Tarasevich fibers (i.e. anti-static carbon fibers P140), and the blend is commercially available from DuPont as NOMEX® IIIA.

Then the samples were subjected NESCO is Kim tests to determine their relative performance. Because of the cost of these tests, the Applicants have not reproduced independently all these tests on the comparative tissues. Significantly, in certain cases, Applicants proceeded from the values given by the manufacturer of the fabric or blend of fibers. When the reported value of the manufacturer, the Applicants brought the same thing to the Table.

Tissue samples were evaluated in terms of Flammability and durability using vertical test firing of the device in accordance with the Standard Test Method ASTM D 6413, entitled "Standard Test Method for fire Resistance of Textiles (Vertical Test)". The test method provides a measurement of the length of the zone charring of tissue and the ability to samozatuhaniya after a 12-second exposure to fire, held after 100 industrial washings in accordance with the method of washing NFPA 2112-2007.

Tissue samples were evaluated in terms of Flammability using equipped dummy (usually called "PYROMAN®") in accordance with Test Method ASTM F1930, entitled "Standard Test Method for evaluation of flame resistant Clothing for Protection when recreating the Conditions of the Fire Using Equipped Dummy" using a four-second exposure time. This test method PR is the measurement of total indicators of protective equipment and clothing to stationary vertical dummy when exposed to a flash fire when calibrated heat flux of 2.0 calories/cm 2as defined by the set of sensors embedded in the skin of the manikin. The percentage of burn body constituting less than 50%, is considered as valid in accordance with the industry standard NFPA 2112-2007.

Tissue samples were also evaluated for protection against arc in accordance with Test Method ASTM F1959, entitled "Standard Test Method for Determining the mode of Operation of Materials for Clothing by Electric Arc". This testing method is aimed at determining the mode of material with arc or combination of materials. The figures below represent the values of thermal Performance of the Arc (ATPV) for each sample, where higher numbers mean better protection from thermal burns. Operation arc of at least 4 cal/cm2but less than 8 cal/cm2is appropriate for the Category Hazard/Risk (HRC) 1, mode arc of at least 8 cal/cm2but less than 25 cal/cm2meets HRC 2, an operation mode with an arc of at least 25 cal/cm2but less than 40 cal/cm2meets HRC 3, and mode of operation with an arc of at least 40 HRC meets 4.

The results are given in the Table below. In the Table, the asterisk (*) indicates a value that was reported by the manufacturer.

Table. Physical Properties and Resistance parameters (OS) for Sample 1 and Comparative The Samples (S.O.) 1 and 2

Sample 1C.O.1SO
Physical properties
Weave typeSatin 4×1Twill 3×1Smooth 1×1
75%/25% cotton/ nylon75%/25% cotton/nylon
Yarn bases100% Nomex IIIA
100% polyoxadiazole100% cotton, the
The weft yarn100% Nomex IIIA
93% meta-aramid fiber
5% para-aramid
2% tokarskaya fiber
48% polyoxadiazole
39% cotton
13% nylon
88% cotton
12% nylon
The mix
Weight (oz/yd2)6.697.606.0
Indicators OS
VERTICAL FLAME 100 W, the length of the charring zone (inches)
2.693.582.90*
The PERFORMANCE of the ARC - ATPV (cal/cm2)
9.18.7*5.6*
45.369.0*44.3*
PYROMAN - % Burn Body (4)

As can be seen from the data presented in T the blitz, the fabric in accordance with the invention (Sample 1) shows a flame-retardant properties, which are much better than the properties shown commercially available OS cotton-nylon product (i.e. Comparative Sample 1). For example, the test results of vertical fire and Pyroman show that the fabric in accordance with the invention, showing the values that are approximately twenty-five percent and thirty-four percent lower than the values shown commercially available OS cotton-nylon product. The data presented in the Table also show that the flame retardant properties of the fabric according to the invention are comparable with the properties shown cloth manufactured using high content aramid fiber (i.e. Comparative Sample 2). In fact, the results show that the fabric according to the invention shows a much better protection from arc than the Comparative sample 2, while achieving an indicator Category 2 Hazard/Risk (HRC).

All references, including publications, patent applications, and patents, cited herein are incorporated herein by reference to the same extent as if each reference was individually and specifically indicated, as incorporated by reference and were set forth herein in its entirety.

T is rmini "including", "having", "including" and "comprising" should be interpreted as a non-limiting terms (i.e. the value of "including, but not limited to,") unless otherwise indicated. Enumeration of ranges of values herein is intended only for reducing sent individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the description, as if it were quoted separately in this document. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted the context. The use of any and all examples, or exemplary expressions (e.g., "such as")provided herein, is intended only to improve the understanding of the essence of the application and are not meant to limit the volume of entities, unless otherwise stated. Expressions in the description should not be interpreted as indicating undeclared elements, which are essential for the implementation of the object described in this application.

The preferred embodiment of the object of the application described herein, including the best-known inventors the option of implementing the claimed subject matter of the invention. Variations the AI of those preferred embodiments may become apparent to experts in the art as a result of reading the foregoing description.

The inventors expect that the experts in this field technicians will use such options as appropriate, and the inventors intend the entity described herein for use otherwise than here specifically described. In accordance with this disclosure includes all modifications and equivalents of the entities cited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations are encompassed by the present disclosure, unless otherwise indicated herein or otherwise clearly contradicted the context.

1. Textile material having a first surface and a second surface opposite the first surface, and the textile material includes:
(a) the set of first threads located in the first direction, the first yarns include cellulose fibers in an amount of from about 35% to about 100% by weight of the fibers present in the first thread; and
(b) a set of second threads located in the second direction essentially perpendicular to the first direction and second yarns include polyoxadiazole thread,
where the first and second threads are with an organization drawing, in which the first yarns are primarily based n the first surface of the textile material and the second thread is mainly located on the second surface of the textile material.

2. The textile material of claim 1, wherein the pulp fibers comprise about 50% or more by weight of fibers present in the first thread.

3. The textile material of claim 1, wherein the pulp fibers comprise about 100% by weight of the fibers present in the first thread.

4. Textile material according to claim 1, in which the first thread further include synthetic fibers selected from the group consisting of polyester fibers, polyamide fibers, polyvinyl alcohol fibers, and mixtures thereof.

5. Textile material according to claim 4, in which the first yarns include cellulose fibers and polyamide fibers.

6. Textile material according to claim 5, in which the cellulose fibers comprise from about 50% to about 90% by weight of the fibers present in the first yarns and polyamide yarns comprise from about 10% to about 50% by weight of the fibers present in the first thread.

7. Textile material according to claim 1, in which polyoxadiazole fibers comprise from about 5% to about 100% by weight of the fibers present in the second thread.

8. Textile material according to claim 3, in which polyoxadiazole fibers comprise about 100% by weight of the fibers present in the second thread.

9. Textile material according to claim 1, in which the first and second threads are per single yarn.

10. Textile material according to claim 1, in which the first and second the threads are woven in the figure, selected from the group consisting of a satin weave and twill weaves.

11. Textile material, including:
(a) the set of first yarns, the first yarns include cellulose fibers and fibers selected from the group consisting of polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, meta-aramid fibers, para-aramid fibers and mixtures thereof; and
(b) finish applied to the textile material, and the finish includes fosforsoderzhashchie connection, polymerized with at least part of the cellulose fibers, and fosforsoderzhashchie compound is a product obtained by heat curing and the oxidation reaction mixture, including:
(i) a first reagent selected from the group consisting of salts tetrahydrocortisone, salts of condensates tetrahydrocortisone and their mixtures, and
(ii) cross-linking agent selected from the group consisting of urea, guanidine, ganymedian, glycoluril, ammonia, ammonia-formaldehyde adducts, ammonia acetaldehyde adducts, ammonium Butyraldehyde adducts, ammonium goralnik adducts, glucosamine, polyamines, simple glycidyloxy esters, isocyanates, protected isocyanates and mixtures thereof.

12. Textile material according to claim 11, in which the centre of the first thread is located in the first direction, and textile material further includes a set of second threads located in the second direction essentially perpendicular to the first direction and second yarns include cellulose fibers and fibers selected from the group consisting of polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, meta-aramid fibers, para-aramid fibers and mixtures thereof.

13. Textile material according to item 12, in which the first and second yarns include cellulose fibers and polyoxadiazole fiber.

14. Textile material having a first surface and a second surface opposite the first surface, and the textile material includes:
(a) the set of first threads located in the first direction, the first yarns include cellulose fibers in an amount of from about 35% to about 100% by weight of the fibers present in the first thread; and
(b) a set of second threads located in the second direction essentially perpendicular to the first direction and second yarns comprise fibers selected from the group consisting of polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, meta-aramid fibers, para-aramid fibers and mixtures thereof; and
(C) the apertures, h is worn on the textile material, moreover, the apertures includes fosforsoderzhashchie connection, and fosforsoderzhashchie connection includes many groups of pentavalent phosphine oxide having amide linking groups covalently attached thereto, and at least part of the groups of pentavalent phosphine oxide have three amide linking groups covalently attached to him,
in which the first and second threads are with an organization drawing, in which the first thread is mainly located on the first surface of the textile material and the second thread is mainly located on the second surface of the textile material.

15. The textile material 14, in which the cellulose fibers comprise about 50% or more by weight of fibers present in the first thread.

16. The textile material 14, in which the cellulose fibers comprise about 100% by weight of the fibers present in the first thread.

17. The textile material 14, in which the first thread further include thermoplastic synthetic fibers selected from the group consisting of polyester fibers, polyamide fibers, polyvinyl alcohol fibers, and mixtures thereof.

18. Textile material 17, in which the first yarns include cellulose fibers and polyamide fibers.

19. Textile material p, in which the pulp ox the kPa range from about 50% to about 90% by weight of the fibers, present in the first yarns and polyamide yarns comprise from about 10% to about 50% by weight of the fibers present in the first thread.

20. The textile material 14, in which the latter thread include polyoxadiazole fiber and polyoxadiazole fibers comprise from about 5% to about 100% by weight of the fibers present in the second thread.

21. Textile material according to clause 16, in which the latter thread include polyoxadiazole fiber and polyoxadiazole fibers comprise about 100% by weight of the fibers present in the second thread.

22. The textile material 14, in which the first and second threads are per single yarn.

23. Textile material having a first surface and a second surface opposite the first surface, and the textile material includes:
(a) the set of first threads located in the first direction, the first yarns include cellulose fibers in an amount of from about 35% to about 100% by weight of the fibers present in the first thread;
(b) a set of second threads located in the second direction essentially perpendicular to the first direction and second yarns comprise fibers selected from the group consisting of polyoxadiazole fibers, polysulfonamide fibers, poly(benzimidazole) fibers, poly(phenylenesulfonyl) fibers, meta-and the amide fibers, para-aramid fibers and mixtures thereof; and
(C) finish applied to the textile material, and the finish includes fosforsoderzhashchie connection, polymerized with at least part of the cellulose fibers, and fosforsoderzhashchie compound is a product obtained by heat curing and the oxidation reaction mixture, including:
(i) a first reagent selected from the group consisting of salts tetrahydrocortisone, salts of condensates tetrahydrocortisone and their mixtures, and
(ii) cross-linking agent selected from the group consisting of urea, guanidine, ganymedian, glycoluril, ammonia, ammonia-formaldehyde adducts, ammonia acetaldehyde adducts, ammonium Butyraldehyde adducts, ammonium goralnik adducts, glucosamine, polyamines, simple glycidyloxy esters, isocyanates, protected isocyanates and mixtures thereof,
in which the first and second threads are with an organization drawing, in which the first thread is mainly located on the first surface of the textile material and the second thread is mainly located on the second surface of the textile material.

24. Textile material according to item 23, in which the cellulose fibers comprise about 50% or more by weight of fibers present in the first thread.

25. Textile material according to item 23,in which the cellulose fibers comprise about 100% by weight of the fibers, present in the first thread.

26. Textile material according to item 23, in which the first thread further include thermoplastic synthetic fibers selected from the group consisting of polyester fibers, polyamide fibers, polyvinyl alcohol fibers, and mixtures thereof.

27. Textile material p, in which the first yarns include cellulose fibers and polyamide fibers.

28. Textile material according to item 27, in which the cellulose fibers comprise from about 50% to about 90% by weight of the fibers present in the first yarns and polyamide yarns comprise from about 10% to about 50% by weight of the fibers present in the first thread.

29. Textile material according to item 23, in which the latter thread include polyoxadiazole fiber and polyoxadiazole fibers comprise from about 5% to about 100% by weight of the fibers present in the second thread.

30. Textile material A.25, in which the latter thread include polyoxadiazole fiber and polyoxadiazole fibers comprise about 100% by weight of the fibers present in the second thread.

31. Textile material according to item 23, in which the first and second threads are per single yarn.



 

Same patents:

FIELD: textiles, paper.

SUBSTANCE: invention relates to the flame resistant textiles that can be used for overalls and web to protect against electric arc and fire exposure. The fire-resistant textile comprises fabric of satin weaving consisting of 70-100 wt % cellulosic fibres and 0-30 wt % thermoplastic synthetic fibres. The fabric has the thickness of at least 19.5 mils, the thickness of at least 25 mils after 3 domestic washes at 120°F, the air permeability of at least 60 cubic ft/min and weight less than about 7 oz/yard2. Satin weaving fabric also comprises the impregnation, which comprises salt of tetrakis(hydroxymethyl) phosphonium or its condensation product and a chemical substance selected from the group consisting of urea, guanidines, guanylurea, glycoluril and polyamines. After curing by heating and oxidation the part of cellulosic fibres comprises the polymerised phosphate compound of pentavalent phosphorus.

EFFECT: invention provides lightness of fabric and the necessary protection against electric arc and fire exposure.

26 cl, 4 tbl, 11 ex

FIELD: metallurgy.

SUBSTANCE: invention can be used as fillers of composite materials of structure, heat protecting, anti-electro-static purpose and also at production of carbon fibrous adsorbents, catalyst carriers, materials for protection from electro-magnetic radiation, nano structured composite, fullerenes, nano tubes etc. The procedure consists in impregnation of a source unidirectional braid with solution of fire retardant. Braid is made of hydrated cellulose fibres with fine crystal non-tensioned structure with diametre of filament from 8.5 to 15 mcm at its linear density 0.07-0.17 tex. Further, the procedure consists in drying, non-oxidation stabilising carbonisation and graphitisation. As a fire retardant there is used water solution containing 150-200 g/l of ammonia chloride and 10-30 g/l of urea or water solution containing 250-300 g/l of ammonia sulphate and 20-40 g/l of urea. Drying is carried out by electric heating at 120-140°C during 30-60 min. Before carbonisation braid is treated in oxygen containing atmosphere at 140-180°C during 30-90 min. Multi-zone carbonisation is performed in current of inert medium at rate 2.5-4.5 m3/hour during 40-80 min for 5-10 min in each zone with shrinkage of source hydrated cellulose fibre at 10-30 % and at temperature from 170-230°C to 690-710°C. During carbonisation products of pyrolysis in a zone of their highest release are withdrawn due to a low excessive pressure of neutral gas of 120-150 mm of water column at continuous oxidation in spots of combustion. Graphitisation is carried out at 1000-2400°C in medium of nitrogen or argon with contents of oxygen not over 0.001% at rate of drawing 15-50 m/hour.

EFFECT: reduced duration of process, considerable reduction of humidity of produced carbon fibre, multi-zone carbonisation with guaranteed maintenance of uniform temperature of each zone, reduced release of amorphous carbon as product of resin decomposition and prevention of its settling on surface of produced carbon fibre.

7 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: composition for fire-proof treatment of synthetic fibres contains the following in pts. wt: methylphosphite borate 25.00-30.00, water 70.00-75.00, and additionally - ammonia, copper sulphate in the following ratio of components in pts. wt: methylphosphite borate-, water-, ammonia - 25.00-30.00, copper sulphate 0.75-3.00.

EFFECT: high fire-resistance, strength, resistance to thermal-oxidative decomposition and endowing synthetic fibre with high strength of binding with isoprene rubber.

2 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: composition for fireproof discrete coating textile material contains the following in pts. wt: 100 polyvinyl chloride emulsion, 60-70 plasticiser, 1.5-2.5 stabiliser, 5-10 azodicarbonamide, 10-20 thermal expanded graphite, 2-4 vanadium (IV) oxide.

EFFECT: increased fire-resistance and improved thermo-protective properties and absence of toxic substances in the composition.

1 tbl, 5 ex

FIELD: textile industry.

SUBSTANCE: damage-preventing composition includes 1-methyl-2-nitro-3[(3-tetrahydrofuryl)methyl]guanidine as active substance and carrier. Method consists in applying effective amount of indicated compound onto fibrous article.

EFFECT: strengthened effect.

5 cl, 2 tbl, 8 ex

The invention relates to chemical technology of textile finishing and can be used in the finishing production when receiving fire-resistant textiles and nonwovens from cotton, linen and viscose fibres

The invention relates to textile finishing production, in particular to a technology for production of flame retardant textile materials, and can be used in the manufacture of the filtering means of individual protection factors thermal effects

The invention relates to textile finishing production and can be used in technology maomineena finishing of textile material

FIELD: textile industry.

SUBSTANCE: in device reservoir is divided into the first chamber and the second chamber of equal volumes by electroconductive and grounded membrane. Cathode is inserted into the first chamber, and anode is inserted into the second chamber, while cathode is located from membrane at the distance of 5-20 more than anode. The following components are added into water of the first chamber by means of feeders (g/l): sodium silicate 15-20, hydrogen peroxide 20-25, surfactant 2-3, table salt 30-60, powder of aluminium silicates 5-30 vol. %, to develop a dispersed mixture. DC voltage is applied to cathode and anode to create intensity of electric field with value of 50-200 V/m. Besides potential applied to anode is 5-20 times less than potential applied to cathode; cotton fabric is charged into the first chamber. Fabric is impregnated at the temperature of 85-95°C, mixing dispersed mixture in the first chamber; water is mixed in the second chamber. Fabric is steamed at the temperature of 100-105°C for an hour in steaming device, washed with hot and cold water, squeezed.

EFFECT: simplification, reduced dimensions and cost of device, lower production costs.

2 cl, 1 dwg

FIELD: textile industry.

SUBSTANCE: in device reservoir is divided into the first chamber and the second chamber of equal volumes by grounded electroconductive membrane. Cathode is inserted into the first chamber, and anode is inserted into the second chamber, while anode is located from membrane at the distance of 5-20 more than cathode. Table salt in amount of 10-50 g/l, powder of aluminium silicates in amount of 5-30 vol. % are added into water of the first chamber. Cotton fabrics are loaded into the first chamber. DC voltage is sent to cathode and anode to develop intensity of electric field of 20-200 V/m. Potential sent to anode is 5-20 times less by module than the one sent to cathode; dispersed mixture is mixed in the first chamber; fabrics are washed in the first chamber by running water for 10-20 minutes; water is mixed in the second chamber; fabrics are discharged, squeezed.

EFFECT: reduced dimensions of device, lower production costs.

2 cl, 1 dwg

FIELD: textile industry.

SUBSTANCE: in device reservoir is divided into the first chamber and the second chamber of equal volumes by grounded electroconductive membrane; cathode is inserted into the first chamber, and anode is inserted into the second chamber, while cathode is located from membrane at the distance of 5-20 more than anode; the following components are added into water of the first chamber (g/l): sodium silicate 3-5, sodium bisulphate 2-3, surfactant 1-2, table salt 30-60, powder of aluminium silicates 5-100; cotton fabrics are loaded into the first chamber; DC voltage is sent to cathode and anode to develop intensity of electric field of 50-200 V/m; besides potential sent to anode is 5-20 times less by module than the one sent to cathode; fabrics are impregnated with boiling solution for 1-5 hours; dispersed mixture is mixed in the first chamber, and water is mixed in the second one; fabrics are discharged, squeezed and steamed in steaming boiling device.

EFFECT: reduced dimensions of device, lower production costs.

2 cl, 1 dwg

FIELD: textile, paper.

SUBSTANCE: in device reservoir is divided into the first chamber and the second chamber of equal volumes by electroconductive and grounded membrane; anode is inserted into the first chamber, and cathode is inserted into the second chamber, while anode is located from membrane at the distance of 5-20 more than cathode; salts of sulfuric acid with concentration of 5-10 vol. % are added into water of the first chamber, as well as powder of aluminium silicates in proportion of 5-30 vol. %, creating dispersed mixture; fabric of cotton fibres is loaded into the first chamber; DC voltage is sent to cathode and anode to develop intensity of electric field of 50-200 V/m; besides potential sent to cathode is 5-20 times less by module than the one sent to anode; fabrics are impregnated and soaked for 0.5-5 hours; dispersed mixture is mixed in the first chamber, and water is mixed in the second one; fabrics are washed, discharged, squeezed.

EFFECT: simplification of device, reduced production costs.

2 cl, 1 dwg

FIELD: textile industry, in particular, peroxide whitening and alkaline cooking processes used in dyeing of cotton cloths.

SUBSTANCE: method involves dividing reservoir of material washing machine into two chambers by means of partition having fine filtering properties for fine filtering of water; introducing electrodes into said chambers; filling chambers with water, with running water being directed through chamber having positive electrode and called anode chamber, and water comprising, g/l: hydrogen peroxide 20-25, sodium silicate 15-20, surfactant 2-3, being directed through chamber having negative electrode and called cathode chamber; charging common salt into cathode chamber in an amount of 10-20 g/l; supplying electrodes with voltage of 5-35 V; charging cloths into cathode chamber for whitening and alkaline cooking; impregnating cloths in reservoir of material-washing machine at temperature of 85-95 C with aqueous solution of salts of indicated composition; steaming at temperature of 100 C; washing with hot and cold water.

EFFECT: reduced processing time, decreased costs of whitening and cooking processes, and improved safety of operating conditions.

1 dwg

FIELD: textile industry, in particular, cotton fabric washing after mercerization process in production of dyed textile materials.

SUBSTANCE: method involves dividing bath adapted for washing of cotton fabrics and supplied with running water into two chambers by means of partition featuring the properties of fine filter for water; introducing electrodes into both of said chambers; supplying voltage to electrodes for creating electric field having intensity E=20-200 V/m; changing voltage polarity on electrodes with periodicity of 1-5 min; washing cotton fabric within chamber of larger size during 5-20 min. Method allows electric field intensity and, correspondingly, voltage supplied to electrodes to be reduced and safety of washing process to be enhanced.

EFFECT: increased efficiency, reduced process time, decreased consumption of power and costs for washing of cotton fabrics after mercerization process, and improved safety of process.

1 dwg

FIELD: textile industry, in particular, cotton fabric cooking technology used in textile material dyeing process.

SUBSTANCE: method involves dividing fabric cooking reservoir of material washing machine, wherein fabric is impregnated, into two chambers by means of partition featuring properties of fine filter for water; introducing electrodes into said chambers; filling with water, said chamber with negative electrode, which is defined as cathode chamber, being filled with water containing (mg/l): sodium nitrate 3-5; sodium bisulfate 2-3; surfactant 1-2; charging the same cathode chamber with edible salt in an amount of 30-60 g/l; directing running water through chamber incorporating positive electrode; supplying electrodes with electric potential difference of 5-35 V; charging fabric into cathode chamber; impregnating fabric with cooking solution of indicated composition; squeezing fabric to moisture content of 100-110%; boiling in boiling cooking apparatus under saturated steam atmosphere at temperature of 100-105 C during 1 hour; washing with hot and cold water in material washing machine.

EFFECT: reduced expenses for cotton fabric cooking process, and improved safety conditions during fabric cooking process.

1 dwg

FIELD: textile industry, in particular, cotton fabric desizing process and equipment.

SUBSTANCE: method involves dividing bath adapted for desizing of cotton fabrics into two chambers by means of partition featuring the properties of fine filter for water; introducing electrodes into both of said chambers and filling bath with water; introducing into bath chamber of larger size incorporating positive electrode and used as anode chamber sulfites in an amount of 3-15 g/l, powder of amphoteric aluminosilicates: montmorillonite, beidellite, nontronite, kaolinite, halloysite, talc in an amount of 1-30 g/l, each component being introduced individually or in random mixture thereof; charging cotton fabrics into bath; supplying constant potential difference of 5-35 V to electrodes; impregnating and holding fabric in anode part of bath at temperature of 30-40 C during 0.5-5 hours; washing fabrics with cold water; discharging fabrics from bath and squeezing.

EFFECT: simplified construction and reduced production costs, increased efficiency, and improved safety during operation of apparatus.

3 cl, 1 dwg

FIELD: textile industry, in particular, structure of fabric and method for producing such a fabric.

SUBSTANCE: fabric is manufactured by interweaving of warp and weft threads, with weft threads being combined thread including polyurethane core making 0.5-5.0% by weight of fabric, and twisted layer. Fabric is composed of thermally stabilized filaments. Warp threads and twisted layer are made from cotton filaments. Surface density of fabric is 75-435 g/m2, with number of warp threads per 10 cm making 154-446 and number of weft threads making 150-481. Method involves providing mutual interweaving of weft and warp thread systems; performing chemical processing, dyeing, printing and providing final finishing. Thermal stabilization process is carried out at temperature of 170-1900C for 40-90 s immediately before preliminary chemical processing or dyeing or printing process or before final finishing procedure.

EFFECT: convenient use and reduced manufacture costs.

3 cl, 1 tbl

The invention relates to the finishing of textile materials, in particular, to the development of resource-saving technologies, providing protection for the environment from the harmful industrial pollution

FIELD: chemistry.

SUBSTANCE: invention relates to a painting canvas based on glass fibre intended to be applied on the inner surface of a building, which contains an agent capable of trapping formaldehyde, as well as a method of making said painting canvas. The painting canvas contains an impregnating agent and an agent capable of trapping formaldehyde which is selected from compounds with active methylene groups, hydrazides, tannins, amides, amino acids, peptides and proteins. The method of making the canvas involves feeding the canvas into a padding machine or device having two rollers, each having a centre tube for feeding the impregnating agent under pressure, followed by drying and collecting the canvas. The method includes a step of treating with an agent which is capable of trapping formaldehyde.

EFFECT: use of the canvas reduces the amount of formaldehyde inside buildings.

19 cl, 2 dwg, 2 tbl, 6 ex

FIELD: textiles, paper.

SUBSTANCE: invention relates to the textile industry, and refers to nylon staple fibres suitable for use in abrasion-resistant high strength nylon yarns. Obtaining of high strength nylon staple fibres with a denier per filament of about from 1.0 to 3.0 is included, as well as the strength of fibre T of at least about 6.0, and the carrying capacity T7 greater than about 2.5, including more than 3.2. These nylon staple fibres are manufactured by obtaining tows of filament yarns of nylon with a relatively high molecular weight (RV from 65 to 100), stretching and annealing of such tows using the two-stage stretching operation with annealing and subsequent stapling or other transformation of the tows stretched with annealing in the required high strength nylon staple fibres. The nylon staple fibres thus obtained may be mixed with the accompanying fibres such as cotton staple fibres, for production of nylon/cotton yarns (NYCO).

EFFECT: invention provides creation of nylon staple fibres for production of NYCO-materials which are abrasion resistant and have long service life.

26 cl, 2 tbl

FIELD: textiles, paper.

SUBSTANCE: invention relates to the textile industry, and refers to nylon staple fibres with a high carrying capacity and mixed nylon yarns and materials made of them. The high strength nylon staple fibres are characterised by the denier per filament of 1.0 to 3.0, the strength of fibre T of at least about 6.0, and the carrying capacity T7 of more than 3.2. The tows of nylon filament yarns are manufactured, which are relatively uniformly moulded and hardened, by such tows stretching and annealing with the two-stage operation of stretching with annealing using relatively high degrees of stretching and subsequent stapling or other transformation of the stretched and annealed tows in the required high strength nylon staple fibres. The nylon staple fibres thus obtained may be mixed with other fibres such as cotton staple fibres, for production of nylon/cotton yarns (NYCO).

EFFECT: invention provides obtaining of fibres for production of materials with a long service life under conditions of increased wear.

27 cl, 4 tbl

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