Product based on bound mineral fibre, characterised by high fire resistance and resistance to decay
SUBSTANCE: invention relates to product based on bound mineral fibre, which is characterised by high fire-resistance according to category Class A1 documented in EN 13501-1 Standard, as well as improved resistance to decay, said product based on mineral fibre involves artificial glass fibre (AGF) bonded by hardened binder composition, wherein uncured binder composition contains (a) component based on sugar and either (b) polycarbonacid component and alkanolamine or (c) product of reaction between polycarbonacid component and alkanolamine, or (d) combination of (b) and (c), number of sugar-based component (a) ranges from 42 to 72 wt% per total weight of (dry substance) components of binder.
EFFECT: invention also relates to method of making said product.
17 cl, 1 tbl
SUBSTANCE: present invention relates to formaldehyde-free coating compositions. The coatings are used to endow fibrous panels and acoustic panels, such as ceiling tiles, with sag resistance. The composition includes a polyacid copolymer having at least two carboxyl groups, anhydride groups or salts thereof, a compound having a hydroxyl group, a phosphorus-containing catalyst and calcium aluminosilicate powder.
EFFECT: sag resistance, rigidity and strength of the formaldehyde-free coating.
8 cl, 1 dwg, 5 tbl, 4 ex
SUBSTANCE: invention relates to binding compositions for insulation articles based on mineral wool. Disclosed is a binding composition based on mineral felt or glass fibre, which includes at least one saccharide, at least one organic polycarboxylic acid containing 2-4 carboxylic functional groups and having molecular weight less than or equal to 1000, and at least one polyorganosiloxane containing at least one functional group capable of reacting with at least one of the components of the binding composition. The invention also discloses a sound- and/or heat-insulation article and coating made of mineral fibre, glued using the disclosed composition and a method of producing a sound- and/or heat-insulation article.
EFFECT: disclosed binding composition does not contain formaldehyde and endows insulation articles with low water absorption.
25 cl, 2 tbl, 8 ex
SUBSTANCE: invention relates to a fire-resistant thermo- and/or sound-insulating product. The fire-resistant thermo- and/or sound-insulating product is based on mineral wool, in particular an asbestos fibre or glasswool and an organic binding agent. The product contains a salt of metal and polycarboxylic acid as a fire retardant.
EFFECT: technical result of the invention consists in a uniform distribution of the fire retardant in the product.
19 cl, 8 ex, 1 tbl
SUBSTANCE: invention relates to thermoreactive polymers. Described is composite, which includes: formaldehyde-free binding substance, which includes polyvinyl alcohol and one or more linking agents for hydroxyl polymer, selected from sodium trimethaphosphate, sodium trimethaphosphate/sodium tripolyphosphate and phosphorus oxychloride, polyamide/epichlorohydrin linking agents, cyclic amide condensates, and their combinations, in which polyvinyl alcohol and one or more linking agents for hydroxyl polymer are free of aldehydes; and substrate of mineral wool, processed with water solution of binding substance. Method of obtaining claimed composite is described.
EFFECT: reducing of toxicity.
12 cl, 2 tbl, 2 ex
SUBSTANCE: invention relates to a water-soluble resin composition, a method of producing such a resin composition, use of the resin composition as binding material for non-woven fibre material, particularly insulation materials, and a method of producing such insulation material. The water-soluble resin composition contains a resin which is a product of reaction of aldehyde, preferably selected from a group including formaldehyde and (lower alkyl (C1-C4)) mono- or di-aldehydes or formaldehyde precursors, which can form formaldehyde directly in the resin composition, and a hydroxyl-aromatic compound selected from a group including substituted and unsubstituted mono- or polycyclic phenols, preferably from phenol, said composition further containing: an amino compound containing 2-6 amino groups, which is selected from a group comprising urea, dicyandiamide and melamine, and where the amino compound can also be a mixture of two or more different amino compounds; and a sugar alcohol. The resin has initial molar ratio of aldehyde to the hydroxyl-aromatic compound from 2.3 to 5.5; the ratio of the resin to the amino compound plus the sugar alcohol ranges from 45:55 to 70:30 pts.wt; the ratio of the amino compound to the resin lies between 20:80 and 50:50 pts.wt; and the ratio of the sugar alcohol to the resin plus the amino compound lies between 5:95 and 30:70 pts.wt. The sugar alcohol has a boiling point higher than the setting point of the resin.
EFFECT: obtaining a resin composition having well preserved water-solubility and without ammonia, reduced phenol and formaldehyde emissions during hardening and preservation of mechanical properties of the hardened resin, particularly wet strength.
16 cl, 2 tbl, 6 ex
FIELD: textile industry.
SUBSTANCE: disclosed is a water-base resin binder for use in inorganic fibre material, where the resin binder is obtained by reacting at least the following components in any order: (a) protein-like material which is a protein hydrolysate which is considerably soluble in water at 20°C and has viscosity of less than 50 mPa∙s for 25 wt % aqueous solution, (b) an aromatic hydroxyl compound and (c) aldehyde, and where the water-base resin binder has viscosity of less than 100 mPa∙s when measured in concentration of 50 wt % at 20°C.
EFFECT: during solidification, the obtained resin has lower release of phenols and the release of formaldehyde and ammonia is considerably lower compared to traditional resins.
15 cl, 8 ex, 13 tbl
SUBSTANCE: invention refers to the composition of water binding medium for products made of mineral fiber with increased aging resistance. Composition contains water-soluble component produced by interaction of at least one alkanolamyn with at least one carbonic acid anhydride and urea in amount 1-25% w/w calculated as hard components of composition. The ratio of components is such that the ratio of equivalents of aminogroups plus hydroxyl-groups (NH+OH) excluding urea to equivalents of carboxyl groups (COOH) in the component is in the range of about 0.6-1.5. Ratio of total amount of equivalents of aminogroups plus hydroxyl-groups (NH+OH) including urea to the equivalents of carboxyl groups (COOH) in the binding medium is between the limits x(min) and y(max) represented as
The ready water-soluble component is not mandatory treated with the alkali. The composition is used for production of glued item by bringing mineral fibers or product of mineral fibers in contact with composition of water binding medium and its subsequent hardening at temperature 225-300°C.
EFFECT: production of compositions for binding of mineral fibers with excellent hardening and durability characteristics, good water solubility and dilution resistance.
13 cl, 3 tbl, 1 dwg, 6 ex
SUBSTANCE: invention refers to the composition of water binding medium for products made of mineral fiber with increased aging resistance. Composition contains water-soluble component. The component is produced by interaction of glycerin and at least one alkanolamyn with at least one carbonic acid anhydride. The ratio of components is such that the ratio of equivalents of aminogroups plus hydroxyl-groups (NH+OH) to equivalents of carboxyl groups (COOH) in the component is in the range of about 0.4-2.0. The amount of glycerin used is such that the ratio of equivalents of glycerin OH groups to total amount of equivalents of aminogroups plus hydroxyl-groups (NH+OH) is 0.1-0.9. The ready water-soluble component is not mandatory treated with the alkali. The composition is used for production of glued item by bringing mineral fibers or product of mineral fibers in contact with composition of water binding medium and its subsequent hardening at temperature 225-300°C.
EFFECT: production of mineral fibers with excellent hardening and durability characteristics, good water solubility and dilution resistance.
14 cl, 1 tbl, 8 ex
FIELD: textile; paper.
SUBSTANCE: method to manufacture paper-resin film includes preparation of an impregnation solution by dissolving the impregnation phenol-formaldehyde resin with water to the required concentration and viscosity, addition of a soaking additive, a separating-antiadhesive additive, anti-blocking additive to prevent sticking of films. The impregnation composition contains carbonate or ammonia bicarbonate, or their mixtures - ammonium bicarbonates, in amount of 0.5-4% to mass of phenol resin.
EFFECT: improved physical and mechanical characteristics of coating based on a paper and resin film, reduced time of drying of impregnated paper base and duration of facing of veneer and other board materials.
SUBSTANCE: non-formaldehyde-containing curable aqueous composition contains polyvinyl alcohol combined with starch or modified starch or sugar, a multi-functional cross-linking agent and, optionally, a catalyst. The cross-linking agent is non-polymeric polyaldehyde, non-polymeric polyacid, salt thereof or anhydride. Nonwoven articles are obtained by bringing the composition into contact with fibrous components. Further, the mixture is cured to obtain a hard thermoset polymer.
EFFECT: composition ensures excellent strength and water resistance of the cured nonwoven article.
22 cl, 4 tbl, 15 ex
SUBSTANCE: method involves applying a water-based adhesive composition which contains non-gelled starch and additionally 0.1-50 wt % of one or more polymers (P) having an amine group or an amide group onto one or more parts of wood-based material and joining the one or more parts with one or more additional parts of wood-based material.
EFFECT: high quality of gluing.
13 cl, 2 tbl, 5 ex
SUBSTANCE: method involves depositing an adhesive system onto one or more pieces of wood-based material and joining one or more pieces with one or more additional pieces of the material. The adhesive system contains one component which contains starch, and another component which contains one or more polymers belonging to a group comprising polyvinyl amine, copolymers poly(vinyl alcohol-co-vinyl amine), poly(vinyl alcohol-co-vinyl formamide), polyallyl amine, polyethylene imine, polyamido amine and polyvinyl formamide. The two components are deposited on the wood-based material as unmixed separate components. The adhesive system further contains one or more polymers containing acetoacetylated polyvinyl alcohol.
EFFECT: use of the adhesive system enables to produce such wood-based products as boards based on chips, particles or fibres or boards based on aligned long chips.
19 cl, 1 tbl, 2 ex
SUBSTANCE: composition contains carrier starch and secondary starch. The carrier starch contains (in terms of dry mass), less than 50% pre- gelatinised starch and has higher sensitivity to alkali than the secondary starch. The secondary starch is selected from a group comprising maize starch, potato starch, wheat starch and a mixture of two or more of the said types of starch. The carrier starch is selected from a group comprising wheat starch, potato starch, cassava starch, barley starch and a mixture of two or more of the said types of starch. The composition contains (in terms of dry mass) 0.5-60% carrier starch, 40-99.5% secondary starch and 1-8% alkali. The composition also contains (in terms of dry mass) 0.1-3.5% boron compound. An adhesive is obtained by adding the composition to water and stirring while adding a sufficient amount of alkali. The adhesive is used to make corrugated cardboard and multilayer materials. The advantage of the adhesive composition lies in that it can be easily prepared with low expenses on time and equipment.
EFFECT: use of the adhesive improves quality of cardboard, reduces adhesive consumption and increases rate of production.
25 cl, 6 tbl, 1 ex
FIELD: glue materials.
SUBSTANCE: invention relates to a method for preparing glue Stein hall with the high content of dry matter by using a single mixing capacity and comprising the following steps: 1) preparing a carrier by gluing the first part of starch in medium containing part of alkali necessary for preparing the glue; 2) diluting a carrier with water followed by addition of at least lesser part of the second part of starch; 3) addition of remaining part of the second part of starch and remaining part of alkali in diluted form that is necessary for preparing the glue. Addition of remaining the second part of starch and alkali is carried out in stages. Invention provides preparing the glue with the high content of dry and simplifying technology for its preparing.
EFFECT: improved preparing method.
10 cl, 2 ex
FIELD: production of the glue composition of labeling assignment.
SUBSTANCE: the invention is pertaining to production of the glue composition of labeling, in particular, to the glue composition designated for sticking of the glue impregnated-paper labels to the glass, plastic, metallic, ceramic and wood surfaces. The invention allows to produce the glue compositions, which are distinguished by the increased frost-resistance: withstanding the multiple freezing and defreezing. The composition is produced by combination of two compounds preliminary heat-treated at the temperature of 80-90°C and their subsequent heat treatment together with the modifying agent - Amylum at 90-95°C, and bring up to pH=7.0-7.5 IN by KOH or NaOH solution. At that the composition 1 contains: dextrin, gum-arabic pretreated at 130°C and under the residual pressure of 05 mmHg, water; the composition 2 contains: colophony, glycerin, borax, water. At that the first composition was thermotreated in presence of several drips of antifoaming liquid. The labels gain positive stability against a shearing within 10 seconds and after 5 minutes can be torn-off only with a break of the paper.
EFFECT: the invention ensures, that the labels gain positive stability against a shearing within 10 seconds and after 5 minutes can be torn-off only with a break of the paper.
1 tbl, 8 ex
FIELD: adhesive composition, in particular adhesive paste for wallpaper.
SUBSTANCE: claimed composition contains flavoring agent releasing adhesive, component comprising of at least one flavoring agent, and at least one carrier. Composition is in dry form such as powder or granules and can be mixed with water. Moreover in odor-releasing component at least one flavoring agent is bond to carrier in such a manner that said flavoring agent in released from composition only after component contact with water. As carrier preferably cyclodextrin or derivatives thereof are used.
EFFECT: composition free from displeasing odor after blending with water.
7 cl, 1 ex
FIELD: process engineering.
SUBSTANCE: invention relates to composites with high mechanical strength to prevent damages caused by striking, particularly, to production of laminates. Prepreg includes a structural layer of conducting fibres containing thermosetting resin fitted in gaps. First outer resin layer contains thermosetting resin and combination of electrically conducting free single threads. The latter are arranged on the surface of interface between said structural layer and resin outer layer. The latter hardening at increased temperature brings about hardened composite. The latter comprises hardened structural layer of compacted conducting fibres and first outer layer of hardened resin. Note here that said outer layer of hardened resin includes a portion of said combination of electrically conducting free single threads dispersed therein. Note here that said combination of electrically conducting free single threads is made of the portion of structural layer of conducting fibres.
EFFECT: light composite of excellent mechanical properties.
16 cl, 11 dwg, 2 tbl, 2 ex