Inhibitory fiber with anti-virulence factor and its manufacturing method

FIELD: textile, paper.

SUBSTANCE: fiber is irradiated with an electron beam for subsequent contacting with a compound for chemical bonding. A compound is selected from a phosphate-, carboxyl- or ketone-containing compound groups. The alkali neutralization step is carried out.

EFFECT: reduced probability of occurrence of strains resistant to treatment, preventing the spread of infections.

8 cl, 3 dwg, 13 tbl

 



 

Same patents:

The invention relates to organic and inorganic polymeric sheet material, in particular to the film, woven or non-woven fiber, the method of improving the surface characteristics of such material, method of generating plasma glow discharge for modifying the surface properties of organic and inorganic polymeric materials and to the device to initiate the glow discharge plasma

FIELD: textiles, paper.

SUBSTANCE: treatment method includes the stage of emission treatment with irradiation of cellulose fiber material with irradiation, the stage of treatment with phosphorus with addition of phosphorus compound capable to radical polymerisation to the material of cellulose fibers, and the stage of treatment with amine with addition of amine compound to the material of cellulose fibers. The phosphorus compound capable to radical polymerisation is a vynil-phosphate compound. The amine compound is a polymer containing amino group, which is capable to form an ammonium ion in water. The cellulose fiber treated with this method is used to obtain fire-retarding material. In the fire-retarding material the cellulose fiber is connected with the phosphorus compound capable to radical polymerisation by the additive reaction, and the amine compound is bound with ion bond to the phosphorus compound combined and capable to radical polymerisation.

EFFECT: material has sufficient flame proofing and excellent tactile perception of the fabric.

6 cl, 4 tbl, 44 ex

FIELD: process engineering.

SUBSTANCE: invention relates to membrane technology, particularly, to production of antibacterial polymer membranes to be used in water and aqueous solution treatment in food and pharmaceutical industries, and medicine. Proposed method comprises making polymer solution, forming of polymer membrane and processing with antibacterial substance. Produced membrane is dried, rinsed with water and subjected to final drying. Said antibacterial substance represents composition containing the following components in wt %: 5-10 of poorly soluble or insoluble slats of silver, 2-25 of formic acid an 65-93 of water.

EFFECT: prolonged antibacterial properties.

9 ex

The invention relates to the processing of textile fibers and yarn

FIELD: textiles, paper.

SUBSTANCE: cuttings and/or textile flap is impregnated with a solution of flame retardant composition based on formaldehyde its concentration in the solution of 150-155 g/l, with addition of urea at a concentration of 150-200 g/l in the solution. The impregnation is carried out at a closed turnover cycle of the impregnating agent by downloading the material into the horizontal centrifuge with turnover of not less than 1200 per minute. Then the working solution of flame retardant composition is fed, followed by settling and spinning the impregnated material to the residual moisture content of not more than 5%, and then the material is unloaded from the centrifuge and sent for cutting and fibre separation with spiked rollers. In the process of fibre separation, the flame retardant composition is additionally fed to the material through the nozzles. With poor capillarity of the textile wastes the water-soluble surfactant (Prevocell, Sulfosid) is added to the solution as a wetting agent at a concentration of 0.3-1 g/l in the solution.

EFFECT: method enables to obtain the fibre separated pulp from the textile wastes with reduced flammability for subsequent use in the production of nonwoven materials for automotive industry.

3 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: polyacrylonitrile (PAN) fibre is saturated with a mixture of monomers and resin is synthesised on the surface and in the structure the PAN fibre for 30 minutes. Further, moulding is carried out at pressure of 0.1 MPa. The mixture of monomers used is a mixture of para-phenolsulphonic acid and formalin. The mixture of monomers contains a modifying additive - ultrafine silicon with specific surface area of 67 m2/g. The ultrafine silicon has a spherical shape and an internal nucleus-shell structure, and the ratio of the thickness of the shell to the inner diameter is 1:4. The ratio of the used components PAN fibre:monomer mixture:ultrafine silicon is 1:15:0.1-0.3.

EFFECT: invention increases exchange capacity of the moulding material, reduces its electrical resistance, enables to form a polymer structure with a multi-level system of pores, which enables to use the material at high flow rates of the purified liquid.

1 dwg, 2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: polyacrylonitrile fibre is saturated with a mixture containing monomers of para-phenolsulphonic acid with formalin in dispersed graphite. Resin is then synthesised on the surface and in the structure of polyacrylonitrile fibre for 30 minutes and then moulded at pressure 0.1 MPa. The components are in the following ratio in pts.wt: polyacrylonitrile fibre: mixture of monomers: dispersed graphite = 1:15:0.5-1.5.

EFFECT: invention enables to obtain a polymer moulding material with ion-exchange properties and low electrical resistance.

2 tbl, 3 ex

The invention relates to the tire and rubber industry, in particular impregnating compositions that enhance the bond strength of a textile material with rubber

The invention relates to technologies for primary processing of raw cotton in the textile industry

FIELD: textiles, paper.

SUBSTANCE: material made from natural fibers is dissolved using alkali, without the application of mechanical stress and washed and/or dried if necessary. For dissolving the alkaline material selected from the alkali metal hydroxide, an alkali metal carbonate and alkali metal phosphate is used. The resulting fibrous material is characterised by high strength and low wear. The fibrous material is used in the composite material where the polymer introduced into the fiber structure can be an additional component. The composite material apart from the fiber material comprises the flame retardant and/or other conventional additives as an additional component.

EFFECT: composite material has reduced swelling and water absorption.

23 cl, 4 ex

FIELD: construction.

SUBSTANCE: material has weight referred to an area unit of less than 60 g/m2, contains less than 15 g/m2 of adhesive substance and less than 5 g/m2 of the binder. The material also contains a layer with a weight referred to an area unit of not more than 45 g/m2, including a mixture of fibres of more than 30 g/m2 and not more than 10 g/m2 of burning inhibitor. Application of structures is described, which contain the specified acoustic material and the perforated metal ceiling element and having, when measured in compliance with DIN EN 13823, the value of SMOGRA of not more than 30 m2/s2 and the value of TSP(600 s) of not more than 50 m2.

EFFECT: absence of problems in processing and production of least possible amount of smoke in case of fire.

9 cl, 1 dwg, 2 ex

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

FIELD: chemistry.

SUBSTANCE: invention relates to the technology of production of polymer fibres, in particular, polypropylene fibres, which can be applied as a reinforcing for cement, gypsum, concrete, etc. The fibre is obtained by moulding from a melt and further processing by ionising radiation. The fibre is 0.1-40 mm long, has a diameter of 5-170 mcm and the melt flow index higher than 500 g/10 min, measured in accordance with DIN EN ISO 1133.

EFFECT: application of the obtained fibres provides an increase of fire resistance of the concrete products.

5 cl, 1 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to chemistry of polymers and deals with a method of obtaining hardly flammable polymer products based on polyethyleneterephthalate with biocidal properties, which can be applied in the textile industry, medicine, in products of a special purpose as well as in other fields of industry. The method of obtaining hardly flammable polymer products based on polyethyleneterephthalate with biocidal properties includes stretch forming of polyethyleneterephthalate-based polymer product in an adsorption-active liquid medium, containing modifying additives, and the product drying, with, at least, one modifying additive being a biocidal preparation and, at least, one modifying additive being a fire retardant, and one of the modifying additives is pentaerythritol.

EFFECT: reduction of the polymer material dropping with preservation of lower combustibility and biocidal activity.

8 cl

FIELD: chemistry.

SUBSTANCE: composition contains low-molecular siloxane caoutchouc, ethylsilicate-40, octaphenyltetraasaporphyrinatocobalt(II) or octaphenyltetrapyrazinoporphyrazinatocobalt(II).

EFFECT: increase of covering stability to abrasion and its water-resistance.

1 tbl

FIELD: textiles, paper.

SUBSTANCE: method comprises treatment of cloth at room temperature with a composition comprising, g/l: polyhexamethylene guanidine hydrochloride 15-25, copper acetate or zinc acetate 4-7, acetic acid 4-7, and water up to 1 liter and then the cloth is heat-treated at a temperature of 130-180°C for 1-10 minutes, while half-woollen cloth is made by interlacing of warp and weft yarns of wool and polyester fibers with filling ratio of cloth in the warp and weft equal to 0.9-1.3.

EFFECT: giving the fabric antiallergenic and bacteriostatic properties, while maintaining the antimicrobial activity after wet treatments.

1 dwg

FIELD: textiles, paper.

SUBSTANCE: composition contains the agent which represents diethylene-glycol ester 1,3-dimethyl-4,5-dihydroxyethyleneurea - 15-30 g/l, magnesium chloride - 1-3 g/l, the agent representing styrene-vinyl-acetate-acrylic copolymer - 30-75 g/l and water - up to 1 litre.

EFFECT: reduced loss of strength and domestic shrinkage of processed material, maintaining soft handle, simultaneous infusion of properties of low crease retention and resistance to shrinkage, increase in reliability of the equipment operation due to the absence of adhesion, reduction of energy consumption during treatment of the material.

1 tbl

FIELD: textiles, paper.

SUBSTANCE: method of metallisation woven materials lies in melting of metal wires with electric influence, as well as in spraying of microparticles of molten metal to the plane of the material moving orthogonally to the direction of the spraying with the given speed of feeding and protected with the medium of spray distribution from the damaging effect of high temperatures. The explosive melting of the wire substance is carried out through high-voltage electric influence between the ends of the non-open wire delivered discretely to the metalliser in aqueous medium, and a cloud of ionised particles of evaporated metal is formed, and metallisation is performed by energy cumulation of thermal explosion W and electromagnetic focusing of motion trajectories of the ionised particles to the target rate of metallisation, and the rate of feeding Fn of the process material is regulated in time with a spacing frequency nsp of electric influence, and the volume Vw of the exploded wire is changed, as well as the spraying propagation medium, the voltage Uco and the spacing frequency nsp of electric influence formed by a bit relaxation circuit Lc-Ct, and the metallisation indices are set and controlled during metallisation according to the value of the scattering coefficient Ks of electromagnetic radiation, characterised by the formula: where: Uco is a voltage of electric influence exploding the wire; εm"ш" is dielectric capacitance of the fabric material and metal particles, respectively; α is lateral dimensions of the particles; W is energy released under electric explosion of the wire, of the given volume Vw; Zac is acoustic impedance of the discharge circuit forming the spacing frequency nsp of electric influence; ρmwf,λvap is density, specific electrical conductivity, heat of fusion and heat of vaporisation of the wire material in a given environment; Lc is the circuit inductance; Ct is capacity of tank of capacitors; T=tspTs⇔VwKl emf is the number of explosions of the wire in processing of area of fabric with volume Vfab necessary to ensure the given index of metallisation with guaranteed by experimentally proved dependence of metal amount introduced into the fabric on the volume of the exploded wire Vw taking into accountfor adjustment for the loss coefficient Kl emf at electromagnetic focusing of motion trajectories of the ionized particles; Ts is the sampling period of time of feeding the section of plane of metallised surface; d is thickness of the fabric; λ is wavelength of the electromagnetic radiation in a vacuum; and the value of the metallisation index Kp is set and controlled using a physical phenomenon of scattering of electromagnetic waves in the infrared range, and the voltage of electric influence Uco exploding wire with length of 40 mm and a diameter of 0.6 to 1 mm is adjusted from 2 to 4 kV with values of capacity of tank of capacitors Ct of 150 to 200 microfarad and values of the discharge circuit inductance Lc of 30 to 40 mcH, ensuring minimum loss of metal from 30% to 40% with an electromagnetic focusing of motion trajectories of the ionised particles.

EFFECT: technology is feasible in any media, including, liquids, the cloths have shielding properties, and antibacterial, antiviral, catalytic activity.

1 cl, 6 tbl, 6 dwg

FIELD: textiles, paper.

SUBSTANCE: bicomponent fibers contain aliphatic polyester or a mixture of aliphatic polyesters, which form the first component, and polyolefin or a mixture of polyolefins, which form the second component. Polyolefin contains auxiliary material improving its biodegradation. Textile sheets include these bicomponent fibers and are comparable by mechanical properties to textile sheets based on polyolefin, while they are decomposed more efficiently under the action of microorganisms than the textile sheets based on polyolefin.

EFFECT: enhanced biodegradability, to textile sheets such as nonwoven materials comprising these fibers, which can be used in personal care products.

16 cl, 3 tbl, 2 ex

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