Coloured in spinning purely aromatic polyamide meta-type fibre

FIELD: textile.

SUBSTANCE: invention relates to colored in spinning purely aromatic polyamide meta-type fibre, used as heat resistant and fire-resistant fibres preferably in field of protective clothes. Coloured in spinning purely aromatic polyamide meta-type fibre has residual solvent content of 0.1 wt% or less per total fibre weight.

EFFECT: wherein colored in spinning purely aromatic polyamide meta-type fibre has higher resistance to decoloration and color fading under exposure to light and higher stability of dimensions at high temperature.

5 cl, 1 tbl, 4 ex

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to chemical technology of meta-type wholly aromatic polyamide fibres. The fibres contain an ultraviolet absorbent having solubility in water of less than 0.04 mg/l, and which has an exhaustion ratio of the dyed fibres of 90% or more and a light resistance retention ratio after carrier dyeing of not less than 80%.

EFFECT: provided meta-type wholly aromatic polyamide fibres that can be dyed in various colours by the carrier dyeing, and in which the detachment of light stabiliser during dyeing can be suppressed.

6 cl, 1 tbl, 5 ex

FIELD: chemistry.

SUBSTANCE: composite layered rubberised fabric protective material based on butadiene-nitrile rubber with barrier layer is made three-layered and consisting of middle reinforcing layer, on both sides of which outer covering layers are located, and middle reinforcing layer is made in form of fabric from highly strong polyester fibre with thread of linear density 9-12 tex, with specific breaking load not lower than 610 mN/tex and number of coils 180-220 twists/m, or highly strong aramid fibre or their mixture, highly strong aramid thread with linear density 6.3-14.3 tex, specific breaking load not lower than 200 cN/tex and number of coils 90-130 twists/m being used in the fabric, and threads are used in form of two-component combined thread, whose first component in form of rod represents aramid and/or polyester complex thread or yarn, and second component of two-component combined thread in form of rod braid with number of coils 600-900 twists/m represents modified fire-proof viscose thread or yarn with linear density 10-30 tex, in aramid thread or yarn also used are polyparaphenylene terephthalamide, polymetaphenylene terephthalamide, copolyparaphenylene terephthalamide or copolyparaphenylene benzimidazole terephthalamide fibres. Outer covering layers are made from rubber composition, containing butadiene-nitrile rubber, accelerator of vulcanisation - zinc oxide and thiuram "D", sulphur, regulator of vulcanization rate - additionally zinc oxide, white soot and technical carbon, stearic acid, fire retardants - antimony trioxide, chloroparaffin and melamine cyanurate, pigment - titanium white, antioxidant - polymerised 1,2-dihydro-2,2,4-trimethyl quinoline. On the surface of material from one or two sides of outer covering layer applied is barrier film material from five successively located with respect to surface of outer covering layers, made with total thickness 18-36 mcm in the following succession: first layer from polyolefin, second layer from oriented polypropylene copolymer, third layer from polyvinyl alcohol, fourth layer from oriented polypropylene copolymer and fifth layer from polyolefin. Ratio of thicknesses of barrier layer layers is selected equal (0.18-0.22):(0.23-0.27):0.1:(0.23-0.27):(0.18-0.22). From both sides of third layer of barrier film material located are adhesive layers, made from copolymer of ethylene with vinyl alcohol and maleic anhydride, or from copolymer of ethylene with vinylacetate and maleic anhydride or from copolymer of ethylene with maleic anhydride.

EFFECT: invention makes it possible to provide reliable protection of human skin against aerosol and drop penetration of liquid chemical and harmful substances, preserving higher incombustibility and low surface density, and preserve high drapeability of material and its high tensile and tear strength.

10 cl, 6 ex

FIELD: process engineering.

SUBSTANCE: proposed invention may be used for protection against poison-gases and chemicals. Butyl rubber-based three-layer material comprises central reinforcing layer and outer cover layers arranged on its both sides. Said central layer is made up of fabric from polyester high-strength thread with liner density of 9-12 tex, specific breaking load of, at least, 610 mN/tex and number of turns of 180-220 t/m, or high-strength aramide thread with linear density of 6.3-14.3 tex, specific breaking load of 200 cN/tex, and number of turns of 90-130 t/m, or mix thereof. Said thread is two-component combine thread. First rod-shape component represents aramide and/or polyester complex thread or yarn, while second component represents rod shield with number of turns of 600-900 t/m made up of modified fire-resistant viscose thread or yarn with linear density of 10-30 tex. Said fabric represents calico, twill, momie or satin weave with identical thread base and weft characteristics and densities. Two outer cover layers are made from rubber composition based on chloroprene rubber containing magnesium oxide, cure accelerator, that, guianide F, that is 1,3-diphenylduanidine, zinc white and thiuram D, curing agent, that is, technical sulfur, filler, that is, technical carbon, plasticiser, that is, stearic acid and chlorinated paraffin wax, fire retardant, that is, antimony trioxide and chlorinated paraffin wax. Barrier film material is applied on both sides on aforesaid material. Said barrier material consists of five consecutive layers with total thickness of 18-36 mcm or with total thickness of (co) polyolefins 35-70 mcm. Adhesive layers are arranged on both sides of third barrier layer made form (co)polyolefins. Adhesive layers are arranged on both sides of third barrier layer made form copolymer of ethylene with vinyl alcohol and maleic anhydride, or the like.

EFFECT: better protection, higher incombustibility and low surface density.

10 cl, 6 ex

FIELD: process engineering.

SUBSTANCE: proposed invention may be used for protection against poison-gases and chemicals. Butyl rubber-based three-layer material comprises central reinforcing layer and outer cover layers arranged on its both sides. Said central layer is made up of fabric from polyester high-strength thread with liner density of 9-12 tex, specific breaking load of, at least, 160 mN/tex and number of turns of 180-220 t/m, or high-strength aramide thread with linear density of 6.3-14.3 tex, specific breaking load of 200 cN/tex, and number of turns of 90/130 t/m, or mix thereof. Said thread is two-component combine thread. First rod-shape component represents aramide and/or polyester complex thread or yarn, while second component represents rod shield with number of turns of 600-900 t/m made up of modified fire-resistant viscose thread or yarn with linear density of 10-30 tex. Said fabric represents calico, twill, momie or satin weave with identical thread base and weft characteristics and densities. Two outer cover layers are made from rubber composition based on butyl rubber containing cure accelerator, that is, zinc white and thiuram D, curing agent, that, technical sulfur, curing rate regulator, that is, 2-mercaptobenzothiazole, filler, that is, white carbon and technical carbon, plasticiser, that is, stearic acid, chlorinated paraffin wax, netoxol, fluid PMC-400 and zinc stearate, fire retardant, that is, antimony trioxide, chlorinated paraffin wax and melamine cyanurate, pigment, that is, titanium white, and adhesive, that is, paraffin. Barrier film material is applied on both sides on aforesaid material. Said barrier material consists of five consecutive layers with total thickness of 18-36 mcm. Adhesive layers are arranged on both sides of third barrier layer made form copolymer of ethylene with vinyl alcohol and maleic anhydride, or the like.

EFFECT: better protection, higher incombustibility and low surface density.

11 cl, 6 ex

FIELD: chemistry.

SUBSTANCE: present invention relates to production of cross-linkable aramide copolymer compositions and articles made therefrom. The composition contains an aramide copolymer obtained from monomers containing 1,4-phenylenediamine and tetraphthaloyl dichloride, and having at least one arylene-carboxylic acid link and at least one hydroxyarylene link. Alternatively, the composition contains an aramide copolymer obtained from monomers containing 1,4-phenylenediamine and tetraphthaloyl dichloride, and having at least one arylene-carboxylic acid link or at least one hydroxyarylene link and a covalent cross-linking agent. The invention also relates to cross-linked copolymers obtained from said composition and moulded articles containing such cross-linked copolymers.

EFFECT: invention enables to obtain materials with improved operational properties.

15 cl, 9 ex

FIELD: chemistry.

SUBSTANCE: method involves preparation of two solutions of a mixture of 5(6)-amino-2(para-aminophenyl)benzimidazole with 5(6)-amino-2(para-iminoquinone)benziimide in dimethylacetamide which contains lithium chloride, and then addition of paraphenylenediamine and an equimolar amount of terephthaloyl chloride to the first solution, and to the second solution - an equimolar amount of a dianhydride of pyromellitic acid. Said solutions are mixed at room temperature until formation of a spinning solution with dynamic viscosity of 300-600 P and concentratio of 3.5-4.0 wt %. The solution is filtered, vacuum treated and formed in a water-salt or water-alcohol settling bath, dried and thermally treated in free state. Industrial fireproof ballistic fabric is then produced from the obtained fibres. Threads obtained according to the invention have elementary fibre diametre higher than 10 mcm, rupture resistance not lower than 280 cN/tex and relative elongation of 3.8-4.5%.

EFFECT: invention enables to obtain fibres, threads, films with high elasticity while retaining good strength properties.

2 cl, 3 tbl, 4 ex

FIELD: process for producing of fully aromatic polyamide fibers comprising filler, in particular, aluminous mineral.

SUBSTANCE: fully aromatic polyamide fiber contains 100 weight parts of fully aromatic polyamide and from 0.05 to 20 weight parts of particles of aluminous mineral having laminated structure, such as hectorite, saponite, stevensite, beidellite, montmorillonite, and swelling mica.

EFFECT: improved mechanical properties of fibers, which may be provided with technological stability at fiber forming stage.

17 cl, 1 dwg, 3 tbl, 7 ex

FIELD: processes for producing of fibers, fibrids and articles from said fibers and fibrids, in particular, non-woven products, paper, and may be used for manufacture of electric insulation.

SUBSTANCE: articles are reinforced with fibers and/or fibrids produced from mixture of thermally stable polymers - aromatic polyamides, aromatic polyamide-imide resins or polyimide resins and thermoplastic polymers - polysulfides, polysulfones. Method involves reinforcing articles by thermal pressing at temperature exceeding glass transition temperature of thermoplastic polymer.

EFFECT: improved mechanical properties and air permeability and high processability.

23 cl, 2 dwg, 7 tbl, 20 ex

FIELD: production of thermally- and fire-resistant textile materials, in particular, materials produced from mixture of thermally stable synthetic fiber and oxidized polyacrylonitrile fiber, which may be used for manufacture of protective clothing for rescuers, servicemen, firemen, oil industry workers, and gas industry workers, filtering fabrics for cleaning of hot gases from toxic dust in metallurgical, cement and other branches of industry, decorative materials, thermally-resistant isolation, and toxic asbestos substitutes.

SUBSTANCE: method involves mixing non-oxidized polyacrylonitrile fiber with thermally stable synthetic fiber in the ratio of from 30/70 to 80/20, respectively; subjecting resulting mixture in the form of yarn, tape, fabric to thermally oxidizing processing at temperature of 240-310 C during 10-180 min.

EFFECT: elimination of problems connected with textile processing of frangible oxidized polyacrylonitrile fibers owing to employment of elastic polyacrylonitrile fibers rather than such oxidized fibers.

2 cl, 7 tbl, 6 ex

FIELD: polymer materials.

SUBSTANCE: invention relates to technology of manufacturing thermoplastic monofilaments and can be used in fabrication of bristle used under high humidity conditions. Monofilament is composed of polymer blend constituted by at least one polyamide and at least one thermoplastic polyester. Ratio of constituents in the blend is selected according to technical and functional properties determined, on one hand, by destination of bristle and, on the other hand, by environmental conditions in the bristle application location. Polyamide fraction ranges from 10 to 30% and that of polyester from 70 to 90%. Bristle completely meets functional and technical requirements as well as environmental conditions.

EFFECT: reduced manufacturing cost.

16 cl

FIELD: chemistry.

SUBSTANCE: invention discloses two versions of a method of dyeing synthetic fibre by forming a polymer from sulphuric acid solution, containing a dispersed dye in amount of 0.5-5 wt % of the polymer, dissolved in concentrated sulphuric acid and retained in the polymer. In version 1, the synthetic fibre used is a product of copolycondensation of terephthalic and para-toluic acid and hydrazine sulphate. In version 2, the synthetic fibre used is a product of (co)polycondensation of terephthalic, isophthalic, para-toluic, meta-toluic acid and hydrazine sulphate.

EFFECT: simplification of technology owing to production and dyeing of fibre in a single step while simultaneously increasing colour fastness to light to 7 points and to dry and wet friction to 5 points by fixing the dye into the structure of the fibre, and also endowing the fibre with surface roughness.

2 cl, 1 dwg, 2 tbl, 82 ex

The invention relates to textile production
The invention relates to the field of technology for dyed polyamide fibers, in particular to a method of dyeing fibers from polyparaphenyleneterephtalamide and its copolymers

FIELD: chemistry.

SUBSTANCE: invention discloses two versions of a method of dyeing synthetic fibre by forming a polymer from sulphuric acid solution, containing a dispersed dye in amount of 0.5-5 wt % of the polymer, dissolved in concentrated sulphuric acid and retained in the polymer. In version 1, the synthetic fibre used is a product of copolycondensation of terephthalic and para-toluic acid and hydrazine sulphate. In version 2, the synthetic fibre used is a product of (co)polycondensation of terephthalic, isophthalic, para-toluic, meta-toluic acid and hydrazine sulphate.

EFFECT: simplification of technology owing to production and dyeing of fibre in a single step while simultaneously increasing colour fastness to light to 7 points and to dry and wet friction to 5 points by fixing the dye into the structure of the fibre, and also endowing the fibre with surface roughness.

2 cl, 1 dwg, 2 tbl, 82 ex

The invention relates to new painted molded products of cellulose, in particular fibers or films

FIELD: chemistry.

SUBSTANCE: invention discloses two versions of a method of dyeing synthetic fibre by forming a polymer from sulphuric acid solution, containing a dispersed dye in amount of 0.5-5 wt % of the polymer, dissolved in concentrated sulphuric acid and retained in the polymer. In version 1, the synthetic fibre used is a product of copolycondensation of terephthalic and para-toluic acid and hydrazine sulphate. In version 2, the synthetic fibre used is a product of (co)polycondensation of terephthalic, isophthalic, para-toluic, meta-toluic acid and hydrazine sulphate.

EFFECT: simplification of technology owing to production and dyeing of fibre in a single step while simultaneously increasing colour fastness to light to 7 points and to dry and wet friction to 5 points by fixing the dye into the structure of the fibre, and also endowing the fibre with surface roughness.

2 cl, 1 dwg, 2 tbl, 82 ex

FIELD: chemistry.

SUBSTANCE: dyed in process of moulding aramide fibres are obtained with application of organic pigment of formula (I), wherein R1 is substituent Xa, R2 is H.

EFFECT: claimed dyed in process of moulding aramide fibres possess stable coloristic characteristics and non-washability.

8 cl, 2 dwg, 1 tbl, 3 ex

FIELD: textile.

SUBSTANCE: invention relates to colored in spinning purely aromatic polyamide meta-type fibre, used as heat resistant and fire-resistant fibres preferably in field of protective clothes. Coloured in spinning purely aromatic polyamide meta-type fibre has residual solvent content of 0.1 wt% or less per total fibre weight.

EFFECT: wherein colored in spinning purely aromatic polyamide meta-type fibre has higher resistance to decoloration and color fading under exposure to light and higher stability of dimensions at high temperature.

5 cl, 1 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention discloses two versions of a method of dyeing synthetic fibre by forming a polymer from sulphuric acid solution, containing a dispersed dye in amount of 0.5-5 wt % of the polymer, dissolved in concentrated sulphuric acid and retained in the polymer. In version 1, the synthetic fibre used is a product of copolycondensation of terephthalic and para-toluic acid and hydrazine sulphate. In version 2, the synthetic fibre used is a product of (co)polycondensation of terephthalic, isophthalic, para-toluic, meta-toluic acid and hydrazine sulphate.

EFFECT: simplification of technology owing to production and dyeing of fibre in a single step while simultaneously increasing colour fastness to light to 7 points and to dry and wet friction to 5 points by fixing the dye into the structure of the fibre, and also endowing the fibre with surface roughness.

2 cl, 1 dwg, 2 tbl, 82 ex

FIELD: textile.

SUBSTANCE: invention relates to colored in spinning purely aromatic polyamide meta-type fibre, used as heat resistant and fire-resistant fibres preferably in field of protective clothes. Coloured in spinning purely aromatic polyamide meta-type fibre has residual solvent content of 0.1 wt% or less per total fibre weight.

EFFECT: wherein colored in spinning purely aromatic polyamide meta-type fibre has higher resistance to decoloration and color fading under exposure to light and higher stability of dimensions at high temperature.

5 cl, 1 tbl, 4 ex

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