Method of modifying wool textile materials

FIELD: textile industry.

SUBSTANCE: invention relates to textile finishing industry and can be used to improve resistance of wool textile materials against shrinkage and detrition. Method of invention consists in treating material with vinyl monomer solution in presence of initiator followed by rinsing and drying, said initiator being polyvinyl ether of α-hydroxyethyl-t-butylperoxide having general formula: wherein n=4-5, at monomer-to-initiator weight ratio (1-5):1 and temperature 95-100°C. Vinyl monomer is selected from group composed of acrylamide, methacrylamide, and methylolacrylamide.

EFFECT: improved complex of properties of modified wool textile materials due to increased resistance against shrinkage and detrition, and simplified modification method due to increased number of treatment steps.

1 tbl, 18 ex

 

The invention relates to textile finishing production and can be used to improve the sustainability of the wool textile materials to shrinkage and abrasion.

There is a method of giving malosetti woolen fabrics and products, including chlorination, antileishmania, treatment with an aqueous solution of a reactive polyamideimide resin (a product of the interaction of polyamide and epichlorohydrin), the processing of the softening agent and the subsequent drying [Kovtun L.G. Technology finishing of knitted fabrics. - M.: Legprombytizdat, 1990. - S-312].

However, this method of finishing does not provide the high resistance of the treated material to abrasion and is quite complex, because it consists of several processing stages.

There is also known a method of giving malosetti woolen materials, based on the processing solution polyethylenimine or its derivatives with addition as the crosslinking agent epichlorohydrin, drying and heat treatment [Kovtun L.G. Technology finishing of knitted fabrics. - M.: Legprombytizdat, 1990. - S].

This method provides the final stage of heat treatment of the material, which leads to the partial degradation and yellowing of the wool material.

In addition, there is a method of finishing textile materials of wool by washing and, bleaching treatment in a bath containing the aqueous dispersion of acrylate copolymer and, as a curing agent, a cationic water-soluble polyaminoamidazolines and (or) polyethylenimine resin [the United Kingdom Patent No. 475793, class D 06 M 15/36, publ. BI No. 24, 1975].

The disadvantage of this method is the low stability of the treated material to abrasion, as well as its multi-stage.

Closest to the present invention is a method of finishing textile materials made of protein fibers, based on the use of the reaction of the graft copolymerization of vinyl monomers to the keratin wool in the presence of the initiator. The method consists in processing wool textile material with a solution of Acrylonitrile (70 g/l) in the presence of sulfuric acid (0.2 g/l) followed by the addition of the initiator - vanadium acid (0.3 g/l) at a temperature of 60°C for 1-1,25 hours [Laboratory of chemical technology of fibrous materials. - M: Light industry, 1976. - S-340].

The disadvantage of this method is the low resilience of the treated wool material to shrinkage and abrasion.

The objective of the proposed method is to develop a method of modification of wool textile materials to improve the properties of complex due to increase steadily the tee to shrinkage and abrasion while simplifying the modification.

The technical result is the improvement of the complex properties of modified wool textile materials by increasing resistance to shrinkage and abrasion and simplification of modification by reducing the number of processing stages.

The technical result is achieved in the modification of wool textile materials by treatment with a solution of vinyl monomer in the presence of initiator, followed by washing and drying, and as a vinyl monomer using a monomer selected from the group of acrylamide, methacrylamide, methylolacrylamide, as the initiator of the use of polyvinyl ether α-oxyethyl-tert-butylperoxide General formula

where n=4-5, when the mass ratio of the monomer and initiator (1-5):1 at a temperature of 95-100°C for 60 minutes

Polyvinyl ether α-oxyethyl-tert-butylperoxide is a product of interaction α-chloroethyl-tert-butylperoxide (α-GETBP) with polyvinyl alcohol, obtained in the reaction according to the following scheme:

where n=4-5.

Synthesis of polyvinyl ether α-oxyethyl-tert-butylperoxide carried out in the reactor in an environment of chloroform at a ratio of α-GETBP and polyvinyl alcohol 1:5 (mol). The reaction mass is eremetical at a temperature of 75-80° With over 3.5 hours. Hydrogen chloride from the reaction mass was blown out with dry nitrogen into a solution of sodium hydroxide.

After carrying out the synthesis, the reaction mixture was washed first with a 15%aqueous solution of sodium bicarbonate until neutral, then with water. The obtained chloroform solution of the product was dried over anhydrous magnesium sulfate, and then in a vacuum solvent was removed.

The molecular weight of the obtained product (polyvinyl ether α-oxyethyl-tert-butylperoxide) equal 45000-50000. IR spectroscopic analysis allowed us to identify the corresponding parts in the connection structure. The degree of substitution of the-Oh groups amounted to 10-15%.

Polyvinyl ether α-oxyethyl-tert-butylperoxide soluble in water at a temperature of 60°With, has a high thermal stability, and low toxicity.

thermal decomposition of polyvinyl ether α-oxyethyl-tert-butylperoxide begins at a temperature of 95°liaison With O-O with the formation of the following radicals:

The resulting methyl and polymer radicals in the presence of vinyl monomer initiate the formation of polymer macroradicals and their inoculation to the keratin wool, which ensures formation and a solid hold on the surface of the textile is on modifying material of a polymer layer.

Thus, the novelty of the proposed modification consists in that the polyvinyl ether α-oxyethyl-tert-butylperoxide, which is a polymeric peroxide as an initiator of radical polymerization of vinyl monomer and chemical interaction (shots) of the resulting polymer macroradicals with textile material, however at the same time is part formed by modifying the layer of polymer. This results in a simpler modification technology, being reduced to one stage of processing, and on the surface of the material formed is firmly fixed, smoothing the surface of the wool fiber is a thin layer of polymer, giving it a higher nicolachianese and, as a consequence, high resistance to shrinkage and abrasion.

The processing temperatures for the proposed method (95-100° (C) is determined by the beginning of thermal decomposition of polymeric peroxide. The claimed ratio of the monomer and initiator (from 1:1 to 5:1) to receive on the surface of the polymer film with the desired properties.

A common modification of wool textile materials is in the handling of material with an aqueous solution of the vinyl monomer from the series: acrylamide, methacrylamide, methylolacrylamide, and polyvinyl ether α-oxyethyl-tert-butylperoxide total concentration of 60-70 g/l at assocom ratio of the monomer and initiator is from 1:1 to 5:1 (when the module baths M 1:30) at a temperature of 95-100° C for 60 min followed by rinsing and drying.

Specific data on the practical implementation of the proposed method modifications wool textile materials below.

Example 1. A sample of wool fabric (surface density of 120 g/m2) was treated with an aqueous solution of acrylamide and polyvinyl ether α-oxyethyl-tert-butylperoxide the claimed structural formulas, where n=4, the total concentration of 60 g/l when the mass ratio of the monomer and initiator 1:1 (1:30) at a temperature of 95°C for 60 min followed by rinsing and drying.

Examples 2-5. The modification process woolen fabric carried out analogously to example 1 by the modes specified in the table.

Table
Number exampleThe ratio (wt.) monomer and initiatorThe total concentration of the treatment solution, g/lThe number of hydroxyl groups in the elementary level macromolecules initiator (n)Temperature, °Shrinkage after 5 washings (length), %Abrasion resistance, cycles
The monomer is acrylamide
11:1604952,11 800
22:16551001,01 850
33:1704950,71 925
44:16051002,51 820
55:1654951,31 890
6

(the prototype)
of 5.41 380
The monomer - methacrylamide
71:1604953,61 630
82:16551002,21 675
93:1704951,81 710
104:16051003,51 690
115:1654952,01 650
12 (prototype)6,21 120

Continuation of the table
Number exampleThe ratio (mass.) monomer and initiatorThe total concentration of the treatment solution, g/lThe number of hydroxyl groups in the elementary level macromolecules initiator (n)Temperature,

°
Shrinkage after 5 washings (length), %Abrasion resistance, cycles
The monomer - methylolacrylamide
131:160495the 3.82435
142:16551002,72540
153:1704951,92595
164:16051003,42470
175:1654952,32550
18 (prototype)6,11 860

Example 6. Modification of wool fabrics by way of the prototype.

Example 7. A sample of wool knitted fabric (surface density of 155 g/m2) was treated with an aqueous solution of methacrylamide and polyvinyl ether α-oxyethyl-tert-butylperoxide the claimed structural formulas, where n=4, the total concentration of 60 g/l when the mass ratio of the monomer and initiator 1:1 (1:30) at a temperature of 95°C for 60 min followed by rinsing and drying.

Examples 8-11. The process of modification of wool knitted fabrics carried out analogously to example 7 by the modes specified in the table.

Example 12. Modification of wool knitted fabrics according to the method of the prototype.

Example 13. A sample of wool fabric (surface density of 210 g/m2) was treated with an aqueous solution of methylolacrylamide and polyvinyl ether α-oxyethyl-tert-butylperoxide the claimed structural formulas, where n=4, the total concentration of 60 g/l when the mass ratio of the monomer and initiator 1:1 (1:30) at a temperature of 95°C for 60 min followed by rinsing and drying.

Examples 14-17. Processing wool fabric carried out analogously to example 13 by the modes specified in the table.

Example 18. Modification of wool fabrics by way of the prototype.

The table also gives the properties of the modified wool textile mother of the crystals of the proposed method and the method prototype. Indicators of shrinkage and abrasion resistance was determined according to GOST 8710-84 and GOST 18976-73 respectively.

Analysis of the data presented in the table shows that the proposed method modifications, in addition to simplifying the technology, as was shown above, provides for making wool textile materials, the effect of high resistance to shrinkage and abrasion.

The modification of wool textile materials by treatment with a solution of vinyl monomer in the presence of initiator, followed by washing and drying, characterized in that as a vinyl monomer using a monomer selected from the group of acrylamide, methacrylamide, methylolacrylamide, as the initiator of the use of polyvinyl ether α-oxyethyl-tert-butylperoxide General formula

where n=4-5,

when the mass ratio of the vinyl monomer and the initiator (1-5):1, and the treatment is carried out at a temperature of 95-100°C for 60 minutes



 

Same patents:

The invention relates to resistant to the solvent connecting means used in the finishing of textile fabrics, the way they are received, as well as to a method for producing resistant to the solvent fibrous products using such resistant to the solvent binders
Sewing thread // 2153031

The invention relates to a technology for fire protective chemical fibers, particularly synthetic (rayon) and synthetic (nylon, polyester)

The invention relates to a method for the modification of synthetic fibers by activating the surface of the fibers with hydrogen peroxide in the presence of copper sulfate and subsequent grafting hydroxyethylacrylate from 2 to 9 % aqueous solution in the presence of fractional input of 0.8 - 1.0 aqueous solution of hydrogen peroxide when the module baths(1 : 5)- (1 : 25)

FIELD: textile industry.

SUBSTANCE: invention relates to textile finishing industry and can be used to improve resistance of wool textile materials against shrinkage and detrition. Method of invention consists in treating material with vinyl monomer solution in presence of initiator followed by rinsing and drying, said initiator being polyvinyl ether of α-hydroxyethyl-t-butylperoxide having general formula: wherein n=4-5, at monomer-to-initiator weight ratio (1-5):1 and temperature 95-100°C. Vinyl monomer is selected from group composed of acrylamide, methacrylamide, and methylolacrylamide.

EFFECT: improved complex of properties of modified wool textile materials due to increased resistance against shrinkage and detrition, and simplified modification method due to increased number of treatment steps.

1 tbl, 18 ex

FIELD: textile industry, in particular, textile material finishing processes for imparting hydrophilic properties, reducing electrolyzing capacity and rendering high resistance to the action of various chemical substances to synthetic textile materials such as filaments, threads, cloths.

SUBSTANCE: method involves simultaneously activating and grafting on synthetic textile material during treatment of the latter at temperature of 95-100 C with aqueous solution containing 40-50 g/l of polyvinyl ester of α-oxyethyl-tertiary-butylperoxide of general formulation: where n=4-5.

EFFECT: improved complex of properties of modified synthetic textile materials and simplified modification process due to decreased number of treatment stages.

1 tbl, 6 ex

FIELD: chemistry.

SUBSTANCE: mixture for the given processing contains a 50% water solution of phosphorous-boron-containing methacrylate, neutralised by ammonia to pH 7 and a sodium persulphate initiator in quantity of 1-5% mass of phosphorous-boron-containing methacrylate with the following mass ratios of the components: phosphorous-boron-containing methacrylate - 50.0, water - 50.0, ammonia - 22.0, sodium persulphate - 1.0-5.0.

EFFECT: increased fire-resistance; strength and resistance to thermo-oxidative breakdown.

2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: method involves grafting onto a synthetic fibre a phosphorous containing monomer at room temperature for a period of 15 minutes and subsequent drying. The phosphorous containing monomer used is a 50% water solution of phosphorous-boron-containing methacrylate, neutralised with a solution of ammonia to pH 7. Grafting is done in the presence of a sodium persulphate initiator, taken in quantity of 1-5% mass of phosphorous-boron-containing methacrylate.

EFFECT: simplification of the technological process of obtaining modified synthetic fibre; their increased fire resistance; strength and resistance to thermo-oxidative breakdown.

1 tbl, 6 ex

FIELD: textile industry.

SUBSTANCE: invention relates to textile finishing industry and can be used to improve resistance of wool textile materials against shrinkage and detrition. Method of invention consists in treating material with vinyl monomer solution in presence of initiator followed by rinsing and drying, said initiator being polyvinyl ether of α-hydroxyethyl-t-butylperoxide having general formula: wherein n=4-5, at monomer-to-initiator weight ratio (1-5):1 and temperature 95-100°C. Vinyl monomer is selected from group composed of acrylamide, methacrylamide, and methylolacrylamide.

EFFECT: improved complex of properties of modified wool textile materials due to increased resistance against shrinkage and detrition, and simplified modification method due to increased number of treatment steps.

1 tbl, 18 ex

FIELD: textile industry, in particular, textile material finishing processes for imparting hydrophilic properties, reducing electrolyzing capacity and rendering high resistance to the action of various chemical substances to synthetic textile materials such as filaments, threads, cloths.

SUBSTANCE: method involves simultaneously activating and grafting on synthetic textile material during treatment of the latter at temperature of 95-100 C with aqueous solution containing 40-50 g/l of polyvinyl ester of α-oxyethyl-tertiary-butylperoxide of general formulation: where n=4-5.

EFFECT: improved complex of properties of modified synthetic textile materials and simplified modification process due to decreased number of treatment stages.

1 tbl, 6 ex

Up!