Method of enzyme peroxide preparation of highly lignified flaxen roving for spinning

FIELD: textile, paper.

SUBSTANCE: invention concerns method of flaxen roving preparation for spinning and can be applied in textile industry. Method of enzyme and peroxide preparation of highly lignified flaxen roving for spinning involves deacidification, enzyme processing at 40-50°C for 90-95 minutes by polyenzyme preparation solution with enzyme activity indicators, units per ml: endopolygalacturonase - 20-25; pectinesterase - 2.5-4.7; protease - 0.2-0.3; exopolygalacturonase - 0.6-0.1; exogalactosidase - 0.2-0.4; exoxylosidase - 0.3-0.5; and exoglucanase - 0.6-0.8. Further the roving is heated to the boiling point and matured for 20-25 minutes, flushed by water and processed for 90-95 minutes in alkaline peroxide solution at hydro peroxide concentration of 0.6-0.8 g/l of active oxygen and total alkalinity of 6.5-7.0 g/l rated per caustic soda. Then the roving is flushed with detergent and water and undergoes counter-microbe processing.

EFFECT: fiber whitening degree enhanced up to 54-56%; obtainment of thin yarn meeting the requirements for both "1 high-flaxen" and "1 high tow" grades by GOST 10078-85 in line density and line density and tear load variation rates; reduced yarn tear rate in weaving process to 40-50 tears for 100 spindles per hour; enhanced yarn strength in 1,2-1,4 times; improved esthetics of woven canvas exterior.

1 tbl, 3 ex

 

The invention relates to the textile industry, namely the technology of preparation of flax rovings for spinning.

The level of technology

One of the drawbacks of domestic flax raw material is a high degree of lignification of binders in the structure of bast bundles due to its high content of lignin, one of the companions of the pulp, giving the fiber stiffness (roughness), the specific brown color and preventing the fragmentation of the beam thickness to obtain a yarn of high numbers (fineness). The content of lignin in the fiber medium soft is 5.5-7 wt.% against 2.5-4 wt.% soft varieties libovolneho raw materials and waste used to produce checkoway yarn, - 8-12 wt.%.

Traditional chemical methods of preparation of flax rovings for spinning is based on the hydrolytic degradation of the polymer satellites cellulose in the process of multi-stage and long-term impacts on flax dilute solutions of acids, alkalis and oxidizing agents [Regulated processes for the processing of rovings, yarn, fabric / M: FSUE TSNYYLKA,1982, 104 S.]. The allowable amount of impurities is controlled to measure the mass loss of the fiber should not exceed 20%. At the same time effective degradation of lignin is ensured only when the x is orderhash oxidants, in particular of sodium chlorite followed by neutralization of the alkaline cooking, by treatment with a solution of acetic acid and acetone with an intermediate leaching [Ivanov A.N. Physico-chemical basis of preparation technology of flax // Diss.... Prof. technology. Sciences. - Kostroma, 1989. - 535 S.].

However, the use of chlorine-containing oxidants does not correspond to modern requirements of environmental safety of production processes and products.

The known method of preparing flax rovings for spinning by selective destruction of the polymer satellites cellulose under the action of the enzyme preparations instead of alkaline cooking with subsequent oxidative treatment in the hydrogen peroxide solution ['ossola M., Galante Y.M. Scouring of flax rove with the aid of enzymes / Enzyme and Microbial Technology, 2004, V.34. - P.177-186]. The method includes the following stages:

- enzyme treated with a solution of enzyme preparation at 55°C for 30 min in the presence of 1 g/l surfactant and 2 g/l complexing of the drug in module 1 bath:10;

- washing at 80°C;

- bleaching solution containing 5.5 g/l NaOH 36è, 5 ml of 11.61 M H2O21 kg Rove and 0.6 g/l of peroxide stabilizer, when heated from 40 to 95°C for 45 min and holding at 95°C for 45 min;

- triple rinsing;

- antipassive processing solution of acetic acid.

For enzyme obrabativala one of the following enzyme preparations, indicating the manufacturer and the level of activity of the present enzyme:

- Pulpzyme (Novozymes) - xylanase of 2.3 units/ml;

experimental product (Novozymes) - galactomannans 1,24 units/ml;

- Bioprep 3000L (Novozymes)-pectinase(andprecautions) 16,8 u/ml;

- NS 45003 (Novozymes) - lipase 0,038 units/ml;

- Purafect 40001 (Genencor) - protease of 5.4 units/ml;

- DeniLeitTMBase + DeniLeitTMAssist (Novozymes) - laccase + mediator (2:1) of 1.6 units/ml

All the variants of this enzyme-peroxide method of preparing flax rovings provide increased strength of the resulting yarn and the reduction ratio nerovnosti. However, increasing numbers (fineness) of the yarn is observed only when the effects of pectinase. According to the presented row reduce the effectiveness of enzyme preparations on the total set of monitorable indicators yarn: pectinase > protease = xylanase = galactomannans > lipase ≥ laccase, the best result gives the breakdown of pectic enzyme impurities drug Bioprep 3000 L based pectins, and the lowest degradation of lignin under the action of lackas belonging to the class of oxidoreductase enzymes.

To accelerate delignification of flax fiber in obtaining medical cotton known methods of preparing fibrous material with the use of the compositions of pectolytic enzymes with lipase [EN 2157434 C1, D21F 11/14, D04H 1/02, C12S 3/04, 3/06, 2000] or cellulases [Nadtoka IN Creating khlopkovogo what's hygroscopic materials on the basis of linen yarn production waste // Diss.... Kida. technology. Sciences. Ivanovo, 2000. - 166 C.]. However, in this case, the fibrous material are mainly requirements whiteness and hydroscopicity and not required to maintain a certain level of connectedness of elementary fibers, which is necessary for processing fiber into yarn.

In the preparation of flax rovings from domestic varieties of flax fiber medium soft ineffective action of the enzyme pectinase preparations are also recommended strengthening additives domestic or import of drugs enzyme cellulase [Cheshkov AV and other New technologies for the preparation of flax rovings / Izv. higher education institutions. Technology text. industry, 2000, No. 6. - P.45-49]. Enzyme cellulases (endoglucanases, classification number CYP 3.2.1.4)and pectinase (andprecautions CYP 3.2.1.15), belong to the group of enzymes - field of glycosidase inhibition, which catalyzes the hydrolysis glucosidic links in On-helicoiling connections (respectively in cellulose and pectin). Increasing the degree of removal of lignin by 5-8% when adding cellulases in comparison with treatment only pectinase, according to the authors, due to the disruption of the lignin component with cellulose.

This option enzymatic processing implements, in particular, the known method of enzyme-peroxide preparation for spinning rovings from flax medium soft or hrubesova fiber using a mixed solution of drugs Viscosum L and Celluzyme (F. Novozymes, Denmark), which are characterized by standard indicators of activity of enzymes, respectively pectinase 1200 units/g of cellulase 150 units/g [Cheshkov AV Enzymatic modification of natural fibre-forming polymers in various stages of preparation of textile materials // Diss.... Prof. technology. Sciences. Ivanovo, 2005. - 338 S.]. The method includes the following stages:

1 - the enzymatic processing of flax rovings at a temperature of 50-55°C, pH 5.0-7.5 and pod bath 1:50 for 10-180 min with a solution of a mixture of drugs Viscosum L and Celluzyme at a concentration of 0.5 g/l each, which provides a level of activity of enzymes in solution, units/l:

- pectinase (andprecautions) - 600;

- cellulase (endoglucanases) - 75;

2 - rinse with hot water 86°C for 5 min;

3 - processing (bleaching) of the alkali-peroxide solution containing, g/l: hydrogen peroxide - 1,4-1,7 (in terms of active oxygen); sodium silicate - 8-12; soda ash - 14; sintana BV - 0,2; Trilon B - 0.2 and magnesium sulfate - 0,1; up to 98°C and the total duration of stage 60-90 min;

4 is a three - time washing with hot water;

5 - re-processing of alkaline-peroxide solution with concentration, temperature and time parameters, such as the one outlined in stage 3;

6 - rinse with a solution of sodium tripolyphosphate 0.4 g/l at 80°C for 20 min and then dailygalaxy water at 70 and 65°C for 10 min;

7 - antimicrobial treatment with acetic acid 0.9 g/l at 55°C for 15 minutes

Weight loss fiber in the preparation of Rove by this method is 9.5 18.1 per cent, the degree of removal of lignin - 44,5-48,1%, whiteness Rove from oesophago fiber - 47,4-57,9%and from technical fibres - 73,6-77,1%.

However, this method has some significant drawbacks. Required long-term (two-time) processing of alkaline-peroxide solution with a high concentration of hydrogen peroxide and stabilizer for peroxide - sodium silicate, as well as increased alkalinity of a solution. Stringent conditions blanching Rove together with the previous impact of cellulases cause substantial damage to the main fibre-forming polymer, as evidenced by the decrease in specific viscosity mednoammiachnyh solutions of cellulose 1.4-1.9 times. Too great is the destruction of technologically necessary hemicellulose - 59-78%, while technically feasible, the degradation of pectic substances does not exceed 40-55%. Damage to the cell wall of elementary fibers of the cellulases leads to the destruction of the amorphous structures of the lignin-hemicellulose, which reduces the technological properties of the fibrous material. Similar results of training are considered to be unfavorable [Ivanov AI, etc. the Study of the chemical composition of the fibers of the flax variety of selection sort is in // Izv. higher education institutions. Technology text. industry, 1986, No. 1. - P.19-21].

Closest to the claimed invention, the essence and the achieved technical result is a method of enzyme-peroxide preparation rovings of domestic flax fiber medium soft to use on stage enzymatic processing multienzyme preparation in the form of a mixed solution of Pectofoetidin PH and oxidoreductases microscopic fungi of the genus Coriolus family Polyporaceal [Kundi S.A. Development of energy-saving environmentally friendly technologies training flax materials based bioprocesses // Diss.... Kida. technology. Sciences. Ivanovo, 1999. - P.114-119]. Pectofoetidin PH is industrially produced by the drug (TU 64-13-04-87) and represents a complex of enzymes microscopic fungus Aspergillus foetidus M45. Along with pectinase (andprecautions, the activity of 1500 units/g) and cellulase (endoglucanase, 19 units/g) it contains pectinesterase 80 units/g, acid protease (10 units/g). The drug present in trace quantities also exogenous polygalacturonase and xylanase, but considering breeding in the technological solution of their content is negligible. Experimental drug oxidoreductase contains peroxidase (activity benzidine 0,82 of 3.5 units/g), laccase (activity benzidine of 0.7 to 3.8 units/g) and polyphenoloxidase the (activity 1.8 to 2.5 units/g). The method includes the following stages:

1 - enzyme treatment at 40-45°C and a pH of 6.5-7.5 for 60 min with a solution comprising the drug Pectofoetidin PH 0.9 to 3 g/l and drug oxidoreductase 0.75 to 3 g/l, which provides the level of enzyme activity, units/l:

- andprecautions (pectinase) - 1125-4500;

- endoglucanases (cellulases) and 17.1-57;

- pectinesterase - 60-240;

- protease - 7,5-30;

- peroxidase - 2,5-2,6;

- laccase - 2,1-2,9;

- polyphenoloxidase - 1,9-5,4;

2 - rinse with hot water 86°C for 5 min;

3 - treatment alkaline-peroxide solution containing the following reagents, g/l: hydrogen peroxide - 1.7 g/l (in terms of active oxygen), metasilicate sodium - 8-12; soda ash to the total alkalinity is 8.5 (in terms of caustic soda); sintana BV - 0,2; Trilon B - 0,2; magnesium sulfate - 0,1; up to 98°C and a total duration of 60 min;

4 - rinse with a solution of sodium tripolyphosphate 0.4 g/l at 80°C for 20 min and then twice with hot water at 70°C and 65°C for 10 min;

5 - antimicrobial treatment with acetic acid 0.9 g/l at 55°C for 15 minutes

The method allows to avoid repeated processing Rove alkaline-peroxide solution, a decrease in the content of acid-insoluble lignin reaches 60% with a total weight loss of the fibers of 8.3%.

Among the principal disadvantages of this method include n is the possibility of its industrial implementation due to lack of industrial production in Russia and abroad necessary for music oxidoreductase, different complex structure and requires inclusion of special substances - redox mediators that are involved in the degradation of high-molecular lignin structures for subsequent oxidation products of depolymerization by polyphenoloxidase, peroxidase or laccase (Golovlev L.A., Ganbarov HG Microbial degradation of lignin // USSR. The success of Microbiology, 1982, V.17. - P.137-158; Grachev I.M., A. Krivova Technology enzyme preparations / 3rd ed., Rev. and supplementary): Elevar. 2000. - 512 S.].

In addition, this method has some technical drawbacks:

- low degree of whiteness of the fibers constituting only 22.8 per cent, due to the high residual lignin content in the fiber at the level of 3.0 wt.% for Rove medium soft and 3.4-4.8 wt.% for coarse fibers and checkoway Rove;

- inability to get thin yarn satisfying the requirements of the 1st grade according to GOST 10078-85 indicators and linear density (T), and the coefficients of variation in linear density (CT) and breaking load (WithP). So, for a yarn linear density of 56 Tex standard standard characteristics uniformity of yarn, WithTand CPshould be no more than, respectively, 3.5% and 20%. For the prototype the same upon receipt of an actual yarn T=56,6 Tex values is the factors of variation are T=5.4% andP=21.5 per cent, which corresponds to the grade "1 srednedlinny". The disadvantage is due to the low degree of removal of pectins, which is adhesive based binders in linen complexes, not exceeding 50%, and insufficient preparation of the fibrous material to crushing, as evidenced by the reduction of the breaking load of the rovings in the wet state with respect to the level of the index for raw Rove no more than 43%;

- increased breakage of the yarn in the process of weaving - 80 breaks 100 spindles per hour, which is due to a number of factors associated with excessive destruction of hemicellulosic connections (up to 62-65%), including:

- low strength of the resulting yarn (breaking load CH 1147, specific breaking load 20,3 CN/Tex, work break 40,4 kgf·cm/g, coefficient of variation in the gap of 7.9%);

- lack of deformation and elastic properties of the yarn (the actual twist 512-524 spins at 1 m, the coefficient of variation for the twist of 9.4%; the share is slowly reversible relaxation in the total elongation at odnotsiklovoy tests yarn does not exceed 18%);

- low endurance yarn to repeated bending and abrasion (5380-5450 cycles);

- insufficient aesthetic appearance of the formed woven because of the presence of the yarn of a large number of defects in the form of thickenings in excess of 1.5 to atoe the value of the average diameter of the yarn, The1,5=3570 pieces/km and thinning with a diameter of less than 0.7 average diameter0,7=3960 PCs/km

Thus, the known methods of preparation for spinning flax rovings using enzyme preparations do not provide effective destruction of lignin and pectin impurities in the intercellular formations binders integrated fiber vysokomehanizirovannyh kinds of linen raw material. The removal of lignin does not exceed 45-60%, and pectin impurities - 40-55%. It is not possible to effectively improve the spinning properties of the fibrous material, the uniformity of its crushing on spinning equipment to produce high quality yarn with the desired level and high stability of its geometrical dimensions, strength and deformation parameters. Low strength, elasticity and abrasion resistance of the yarn is determined by high breakage intermediate product in the process of winding and weaving, and the presence of a large number of defects in the yarn structure in the form of thickening and thinning reduces the aesthetic properties of woven fabrics.

The invention

Inventive task was to find a way of enzyme-peroxide preparation for spinning vysokomehanizirovannoe flax rovings, including enzymatic processing solution multienzyme preparation, including andpolice accureate, pectinesterase, protease and ectoparasitosis, washing with water, treatment of alkaline-peroxide solution, washing with detergent and water and antimicrobial treatment, which would allow the processing of domestic libovolneho raw materials of high hardness to increase the degree of whiteness of the fibers, to obtain a thin yarn that meets the requirements of the 1st grade according to GOST 10078-85 simultaneously on indicators and linear density, and coefficient of variation in linear density and the breaking load, to reduce breakage of the yarn in weaving processes by increasing its strength, deformation and elastic properties and endurance to repeated bending and abrasion, to improve the aesthetic appearance of the formed woven by reducing the number of defects in the yarn structure in the form of thickening and thinning.

The problem is solved by the fact that in the method of enzyme-peroxide preparation for spinning vysokomehanizirovannoe flax rovings, including enzymatic processing solution multienzyme preparation, including andprecautions, pectinesterase, protease and ectoparasitosis, washing with water, treatment of alkaline-peroxide solution, washing with detergent and water and antimicrobial treatment, before enzymatic treatment multienzyme preparation the rovings under the will eraut resislance, as multienzyme drug use solution, optionally containing ectoparasitoids, associatedthe and ekzoplanetu, with indicators of enzyme activity, units/ml:

- andprecautions - 20-25;

- pectinesterase - 2,5-4,7;

- protease - 0,2-0,3;

- ectoparasitosis - 0,6-1,0;

- ectoparasitoids - 0,2-0,4;

- Associazione - 0,3-0,5;

ekzoplaneta - 0,6-0,8;

the enzyme treatment is carried out at a temperature of 40-50°C for 90-95 min, followed by heating to boiling and exposure for 20-25 min, and the processing of alkali / peroxide solution is carried out at the concentration of hydrogen peroxide 0.6-0.8 g/l (active oxygen) and total alkalinity of 6.5-7.0 g/l (in terms of caustic soda) for 90-95 minutes

The invention provides the following advantages:

- to increase the degree of whiteness of the fiber to 54-56% by reducing the residual content of lignin in the fiber medium soft to 1.9 wt.%, in coarse fiber up to 2.15 wt.% and to 3,05 wt.% in checkoway the rovings with a total decrease of the mass of fibers in the preparation of 11-14%, i.e. within technologically valid values - not more than 20%;

- get thin yarn that meets the requirements of sorts "1 vyskoleny" and "1 vysokoriskovyj" according to GOST 10078-85 simultaneously on indicators and linear density (T), and coefficients of variation for linear PL is in the surrounding area (C T) and breaking load (WithP). So, for a yarn with a nominal linear density of 56 Tex characteristics uniformity of yarn, WithTand CPdo not exceed respectively 2,2-2,6% and 12.4%. This is due to the increase in the degree of removal of pectins up to 80-85% against 45% in the prototype and increased to 65-70% reduction in breaking load of the rovings in the wet state with respect to the level of the index for raw rovings, which are the criteria for the preparation of fibrous material to the crushing, against 43% for the prototype;

to reduce breakage of the yarn in weaving processes to 40-50 breaks 100 spindles per hour, which is associated with a decrease in the removal hemicellulosic connections to 30-35% against 65% of the prototype. Such preservation hemicellulosic connections allowed to increase breaking load of yarn to 1327 CH (CH 1147 prototype), specific breaking load up to 25.0 CN/Tex (20,3 CN/Tex prototype), break up 42,6-43,7 kgf·cm/g (40,4 kgf·cm/g prototype) and the rate of twist to 550-562 kr./m (524 kr./m in prototype) at lower coefficients of variation in the gap to 5.1-5.9 per cent (7.9 per cent of the prototype) and the twist of up to 7.2 to 7.9% (9,4% on prototype). The share is slowly reversible relaxation in the total elongation at odnotsiklovoy tests yarn increased to 23-25% (18% on prototype), and endurance yarn to repeated bending and abrasion increased to 675-6897 cycles (against 5432 cycles prototype);

to improve the aesthetic appearance of the formed woven by reducing the number of yarn defects in the form of swelling of not more than 1.5 times the average diameter of the yarn, up to 1920 PCs/km (against 3570 pieces/km for the prototype) and thinning with a diameter of less than 0.7 average diameter of up to 970-1171 pieces/km (3960 PCs/km for the prototype).

Information confirming the possibility of carrying out the invention

The claimed method can be used to handle the rovings stancavage or machecoul technical fibres are coarse or medium softness of the domestic varieties of linseed raw and rough oesophago fiber.

For implementing the method using the following reagents.

As multienzyme preparation can be used products culturing microbiological producers, providing simultaneous biosynthesis of complex technologically necessary enzymes:

- andprecautions (has a different common name pectinase, and installed the current International classification of enzymes 1961 classification number EC 3.2.1.15 and scientific name poly[1,4-α-D-galacturonic]glucanohydrolase),

- pectinesterase (EC 3.1.1.11, pectin-pectolyase),

protease two types of serine proteases (Podolsk CYP 3.4.21) and/or metalloproteinases (podpol the SSA CYP 3.4.24);

- ectoparasitosis (EC 3.2.1.67 poly[1,4-α-D-galacturonic]galactosialidosis) and/or ectoparasitoids (KF 3.2.1.82 poly[1,4-α-D-galactosidase]dialectological);

- ectoparasitoids (CYP 3.2.1.23, β-D-galactoside-galactohydrolase);

- associatedthe (CYP 3.2.1.37, 1,4-β-D-xylan-kilolitres and/or CYP 3.2.1.72, 7,3-β-xylan-kilolitres);

ekzoplaneta (EC 3.2.1.74, Exo-1,4-β-glucosidase).

Multienzyme preparation can be obtained, for example, by mixing the products of the cultivation of non-pathogenic bacterial strains from the Museum Gosniigenetika, registered under the non-Russian collection of industrial microorganisms (VKPM) Century circulans VKPM B-1741, B. subtilis VKPM B-1093, Erw. carotovora VKPM B-1358, You. mesentericus VKPM B-1559 or In-2466. You can use composition of the products of the cultivation of mushroom producers of Penicillium lanosum F-387, Asp. awamori 22 and Asp. flavus VKPM F-591.

Measuring the amount of enzyme expression in the conventional gravimetric or volumetric units is difficult because enzymes are proteins, and to determine their quantity in mixtures with other proteins is impossible. In addition, the catalytic properties of enzymes are unstable and may change considerably depending on the temperature, acid-base properties of the environment or completely lost under adverse conditions is the s storage and use of drugs. In accordance with the recommendations of the Commission on enzymes of the International Union of biochemistry quantitative assessment of the content of a specific enzyme in the product expressed in units of activity according to the results of the reaction that it catalyzes, i.e. the number of the resulting reaction product or the reduction of the original substrate. Under the unit of activity of any enzyme refers to this quantity, which catalyzes the transformation of 1 micromole of a certain kind of substance in 1 min under the given regulated the conditions of the test experiment.

The ratio of certain types of enzymes are regulated by selection of the composition of culture media, conditions of cultivation of microorganisms and biosynthesis enzymes, and methods of their subsequent excretion. Multienzyme preparation may be used in powder form after extraction and freeze drying in the form of a stable liquid products or fresh culture filtrates of liquids. The method can be implemented in any ratio of components multienzyme preparation within the specified ranges of activities.

As the alkaline agent in the processing of alkaline-peroxide solution can be used traditionally used connection tripolyphosphate, bicarbonate, metasilicate sodium performing, first of all, f is ncciu stabilizer of hydrogen peroxide, and soda ash, the concentration of which is determined based on the content of the other agents to the established value of the total alkalinity of the solution in terms of caustic soda.

As the oxidizing agent in the processing of alkaline peroxide solution is used, hydrogen peroxide, the dosage of which is given its concentration in commercial discharge forms in terms of active oxygen.

As detergent when washing Rove after treatment of alkaline-peroxide solution can be used surfactant wetting and emulsifying action, for example neonol 9-12, EM-3P, HT-washing.

As agent for antimicrobial treatment can be used organic acids, mainly acetic, or oxalic acid.

As additional components, if necessary, the solution for enzymatic processing and alkaline-peroxide solution may contain wetting, complexing agents, antispyware, neutral electrolytes.

- For the preparation of solutions can be used distilled, technical or softened water.

The method can be implemented on standard equipment for the preparation of flax rovings, in particular in the apparatus autoclave type ABOUT 500 to L, AAA-U-6 or laboratory equipment brand AL 210/1./p>

The way to implement a consistent carrying out the following operations:

- Raschislova is designed to remove the acidic degradation products of plant tissues of flax stems in primary processing of flax straw. The operation prevents loss of enzyme activity during the impregnation harsh Rove without introducing into the solution a multienzyme preparation special superyoshi additives. Depending on the degree of takisawant raw material, which is determined by the level of acid-base properties of aqueous extracts, raschislova can be carried out by washing the technical or softened water, or impregnation with a solution of baking soda required concentration. Treatment is carried out at a temperature of 20-50°C, mainly at 40-45°C for 10-15 minutes

- Enzyme treatment solution multienzyme preparation with indicators of enzyme activity, units/ml:

- andprecautions - 20-25;

- pectinesterase - 2,5-4,7;

- protease - 0,2-0,3;

- ectoparasitosis - 0,6-1,0;

- ectoparasitoids - 0,2-0,4;

- Associazione - 0,3-0,5;

ekzoplaneta is 0.6 - 0.8.

The operation is carried out according to the variant Dnevnoi two-stage processing. In the first stage, the temperature and pH of the solution are selected on the basis of a compromise combination of Optima on the dependency of the activity of each enzyme from the temperature and pH of the medium specific for different microbial sources. For most of the above mesophilic (createpolyline) microorganisms optimum temperature of enzyme activity is 40-50°C, operating range pH - neutral values and the surrounding area. Module baths 1:10-1:50. The duration of treatment 90-95 minutes In the second stage the solution is heated to boiling and maintained "pile on" with a total duration of 20-25 minutes

The washing water is carried out at a temperature of 65-70°C for 10 min with three changes of water. You can use the first stage of nonionic detergents with increasing temperature to 80-85°C for more effective removal of waxy impurities.

Treatment of alkaline-peroxide solution containing hydrogen peroxide at a concentration of 0.6-0.8 g/l in terms of active oxygen, a peroxide stabilizer (for example, MgSO4or MgCl2, polycarboxylic or reincarnate acid, silicate or metasilicate sodium), alkaline agents (e.g., tripolyphosphate, soda ash) to the total alkalinity of 6.5-7.0 g/l as NaOH. If necessary, the solution may include wetting, complexing agents, neutral electrolytes. Module baths mostly 1:10. The treatment is carried out by heating the solution to boiling and exposure "on the pile". The total duration 90-95 minutes

- Rinse in three stages. At the first stage of processing is carried out at the temperature of 70°C for 10 min with a solution of detergent, predominantly nonionic surfactant emulsifying action, for example neonol 9-12, EM LC, HT-washing in manufacturers ' recommended amounts. Next, the rovings twice washed with hot water at 70°C and 65°C for 10 minutes

- Antimicrobial treatment solution of organic kilty, for example acetic acid, with a concentration of 1 g/l at 45-50°C for 15 minutes

Evaluation of the effectiveness of the proposed method of preparing flax rovings for spinning and prototype performed equally in terms of properties of the fibers in the roving (PAC-8), and aggregate indicators of the properties of the formed yarn (POC-22):

1 - weight loss fiber after processing Rove (Δ, %); determined by the change in mass of the samples before and after treatment [Friedman BN. and other Reference spinning flax. - M.: 1979.];

2 - content of lignin (L, wt.%) [Krichevsky G., Nikitov V.A. theory and practice of preparation of textile materials of cellulose fibers. - M.: 1989. - 207 S.];

3 - the content of pectic substances (P, wt.%) [Krichevsky G., Nikitov V.A. theory and practice of preparation of textile materials of cellulose fibers. - M.: 1989. - 207 S.];

4 - the degree of removal of pectic substances (Δ, %) [Krichevsky G., Nikitov V.A. theory and practice of preparation of textile materials of cellulose fibers. - M.: 1989. - 207 S.];

5 - the content of hemicellulose, (HZ, wt.%) [Krichevsky G., Nikitov V. Theory and practice of preparation of textile materials of cellulose fibers. - M.: 1989. - 207 S.];

6 - degree of removal of hemicelluloses, (Δ, %) [Krichevsky G., Nikitov V.A. theory and practice of preparation of textile materials of cellulose fibers. - M.: 1989. - 207 S.];

7 - reduction of the breaking load in a wet state to the level of raw Rove (ΔM, %) [Test lobularity materials / Ito and others - M.: 1969];

8 - white, (B, %) [GOST 18054-72] the accuracy of the method is 0.1%;

9 - linear density of yarn (T, Tex) [GOST 6611.1-73];

10 - the coefficient of variation in linear density (CT, %) [GOST 11.004-74];

11 - the number of defects per 1000 m of yarn:

- thickening greater than 1,5dCF(Yof 1.5pieces/km);

- thinning, less than 0,7dCF(Y0,7, pieces/km).

The indicators using monocular optical light microscope Biolam R-11 in the 70-fold increase;

12 - twist yarn (Kf, twists per 1 m length) [Laboratory science garment production: Textbook. manual for schools / B.A. Buzov, and others - M.: Legprombytizdat, 1991. - P.57-60];

13 - the coefficient of variation for the twist (CTo, %) [GOST 11.004-74];

14 - breaking load (PpCH) [GOST 6611.2-73];

15 - specific breaking load (Py, CN/Tex) [GOST 6611.2-73];

16 - the coefficient of variation for breaking load (WithP, %) [GOST 11.004-74];

17 - compressive strength (r (kgf·cm/g) [GOST 6611.273];

18 - the coefficient of variation for the tear (Cr, %) [GOST 11.004-74];

19 - proportion of the components relative elongation at odnotsiklovoy trials [Laboratory science garment production: Textbook. manual for schools / Bouzov and others - M.: Legprombytizdat, 1991. - P. 166-172]:

- bistroomrade elongation (ΔBo) characterizes the amount of elastic deformation under tension;

- melanoblastoma elongation (Δmo- characterizes the elastic component of deformation under tension;

residual elongation (ΔOST) is characterized by irreversible deformation under tension;

20 - endurance to repeated bending and abrasion (nandcycles). Tests performed on the device brand TCI with the angle of passage of the yarn through the eyes Gulevich shafts 10°, the stroke length of 40 mm, the load 15% of the breaking, the oscillation frequency

600 min-1;

21 - breakage of yarn (N, arr./100 ver·h). The statistical evaluation is made by counting the number of breaks in the processing of yarns for weaving looms;

22 - grade yarn [GOST 10078-85].

The invention is illustrated by the following examples.

Example 1.

The preparation was subjected rovings No. 16 of coarse machecoul Kaluga flax fibers to produce yarns with a nominal linear density of 56 Tex. Processing Rove spent on the phone ABOUT brand-500-L on the trail of usamu technological mode:

1 - raschislova water at 40°C for 10 min;

2 - enzyme treatment solution multienzyme preparation obtained from the products of cultivation of bacterial strains Century circulans VKPM B-1741, B. subtilis VKPM B-1093, Erw. carotovora VKPM B-1358, You. mesentericus VKPM B-2466, with indicators of enzyme activity, units/ml:

- andprecautions - 20;

- pectinesterase - 3,2;

- protease - 0,3;

- ectoparasitosis - 0,8;

- ectoparasitoids - 0,2;

- Associazione - 0,4;

ekzoplaneta - 0,7,

with the addition of 1 g/l of neonols 9-12 and 2 g/l of trylon B, 20 g/l of triethanolamine; the solution temperature of 50°C, the module baths, 1:10, the processing time of 90 min; heating and aging "on the pile" for 20 min;

3 - rinse solution HT-detergent 0.5 g/l for 10 min and twice with hot water at 70°C for 10 min;

4 - treatment of alkaline-peroxide solution containing hydrogen peroxide 0.8 g/l (in terms of active oxygen), metasilicate sodium 8.0 g/l soda ash to the total alkalinity of 7.0 g/l (as NaOH) with heating from 45 to 98°C for 45 min and holding at 98°C for 50 min;

5 - rinse solution neonols 9-12 with a concentration of 0.8 g/l at 70°C for 10 min and then twice with hot water at 70 and 65°C for 10 min;

6 - antimicrobial treatment with acetic acid 0.9 g/l at 50°C for 15 minutes

After training Rove PR is typically carried out in the wet spinning machine PM-88-L.

The resulting yarn, corresponding to the on set of standardized indicators of the quality requirements of the grade "I vyskoleny".

For comparison processing Rove was performed on a prototype using on stage enzymatic processing of the mixture of the drug Pectofoetidin PH and drug oxidoreductase [Kundi S.A. Development of energy-saving environmentally friendly technologies training flax materials based bioprocesses // Diss.... Kida. technology. Sciences. Ivanovo, 1999. - P.114-119]. The wet spinning was carried out at the same refueling operation parameters of the spinning machine PM-88-L.

The results of the mapping properties of the rovings and yarn for the totality of the analyzed indicators of semi-finished products for the proposed method of preparing flax rovings and prototype are presented in the table.

Example 2.

The preparation was exposed to flax rovings medium soft No. 16 stancavage Vologda flax fibers to produce yarns with a nominal linear density of 56 Tex. Processing Rove was carried out on the apparatus of the brand AL 210/1 at the following technological mode:

1 - raschislova solution of soda ash 0.2 g/l at 45°C for 10 min;

2 - enzyme treatment solution multienzyme preparation obtained by mixing the products of cultivation of strains of P. lanosum F-387, Asp. flavus VKPM F-591 and Asp. awamori 22, with what ukazatelyami activity of enzymes units/ml:

- andprecautions - 25;

- pectinesterase - 2,5;

- protease - 0,2;

- ectoparasitosis - 0,6;

- ectoparasitoids - 0,4;

- Associazione - 0,3;

ekzoplaneta - 0,6

with the addition of 1 g/l of neonols 9-12 and 2 g/l of trylon B, 25 g/l sodium bicarbonate; module baths, 1:10, the solution temperature of 40°C. the processing time of 90 min; then heating and curing "pile on" for 20 min;

3 is a three - time washing with hot water at 65°C for 10 min;

4 - treatment of alkaline-peroxide solution containing metasilicate sodium 7,8 g/l soda ash to the total alkalinity of 6.5 g/l (in terms of caustic soda) and hydrogen peroxide 0.6 g/l (in terms of active oxygen), with heating from 45 to 98°C for 45 min and holding at 98°C for 45 min;

5 - rinse the detergent solution neonol 9-12 with a concentration of 0.5 g/l at 70°C for 10 min, then twice with water at 70 and 65°C for 10 min;

6 - antimicrobial treatment with acetic acid 1 g/l at 50°C for 15 minutes

After training Rove spinning was carried out in the wet spinning machine PM-88-L.

The resulting yarn, corresponding to the on set of standardized indicators of the quality requirements of the grade "1 vyskoleny".

The test results rovings and yarn for the totality of the analyzed indicators of semi-finished products presents the table.

Example 3.

The preparation was subjected to checkoway rovings No. 16 Kaluga flax fibers to produce yarns with a nominal linear density of 56 Tex. Processing Rove was carried out on the apparatus of the brand AAA-U-6 on the next technological mode:

1 - raschislova solution of soda ash 0.2 g/l at 45°C for 10 min;

2 - enzyme treatment solution multienzyme preparation obtained from the products of cultivation of bacterial strains Century circulans VKPM B-6747, B. subtilis VKPM B-1093, Erw. carotovora VKPM B-2970, B. mesentericus VKPM B-1559, with indicators of enzyme activity, units/ml:

- andprecautions (pectinase) - 25;

- pectinesterase - 4,7;

- protease - 0,3;

- ectoparasitosis - 1,0;

- ectoparasitoids - 0,3;

- Associazione - 0,5;

ekzoplaneta - 0,8

with the addition of 1 g/l of neonols 9-12 and 2 g/l of trylon B, 25 g/l sodium bicarbonate; module 1:10, the temperature of the solution to 50°C., the processing time of 95 minutes; subsequent heating to the boil and extract "on the pile" for 25 min;

3 - rinse solution XT-detergent 0.5 g/l for 10 min and twice with hot water at 70°C for 10 min;

4 - treatment of alkaline-peroxide solution containing metasilicate sodium 8.0 g/l soda ash to the total alkalinity of 7.0 g/l (in terms of caustic soda) and hydrogen peroxide 0.7 g/l (in terms of active acidic the genus) with heating from 45 to 98°C for 45 min and holding at 98°C for 50 min;

5 - rinse the detergent solution EM-3P 0.5 g/l at 70°C for 10 min and then twice with hot water at 70 and 65°C for 10 min;

6 - antimicrobial treatment with acetic acid 0.9 g/l at 50°C for 15 minutes

After training Rove spinning was carried out in the wet spinning machine PM-88-L.

The resulting yarn, corresponding to the on set of standardized indicators of the quality requirements of the grade "1 vysokoriskovyj".

The test results rovings and yarn for the totality of the analyzed indicators of semi-finished products are presented in the table.

These tables show that the claimed method is applicable to the preparation of the spinning rovings from domestic vysokomehanizirovannyh varieties of flax fibre, medium-soft, rough and oesophago fiber with a significant increase predomi properties of the fiber and the quality of yarn.

So, the whiteness index of the fiber prepared in the rovings increased 2.5 times, which is the result of purposefully controlled destruction of the impurities is carried out within the valid values of the mass loss of the fiber, and achieve 70-75%removal of lignin, i.e. 1.56 times higher than in the method prototype.

As a result of increase of between 1.6 to 1.7 times the degree of removal of pectins and improve the preparedness of complex fibers to uniform droblem the Yu, characterized by increased 1.58 times reduce the breaking load of the rovings in the wet state with respect to the level of the index for raw Rove received a thinner yarn that meets the requirements of GOST 10078-85 for grades of "1 vyskoleny" or "1 vysokoriskovyj". The coefficient of variation in linear density decreased 2.1-2.8 times, the coefficient of variation for discontinuous load - 1.7-2.1 times.

Breakage of the yarn in weaving processes reduced 1.6-2 times due to the fact that the 1.9-2.2 times reduced destruction of technologically necessary hemicellulose. The dried yarn obtained by the proposed method of preparation of the Rove, has:

• higher strength:

- the breaking load is increased in comparison with the known method 1.13-1.16 times;

- specific breaking load increases to 1.14-1.23 times;

- work gap increases 1.05-1.08 times;

the coefficient of variation in the gap is reduced at 1.34-1.55 times;

• improved deformation and elastic properties of yarns:

- rate of twist is increased by 5-7%;

the coefficient of variation for the twist of reduced 1.2-1.3 times;

- share slowly reversible relaxation in the total elongation at odnotsiklovoy trials increased to 1.28-1.39 times;

- endurance to repeated bending and abrasion increased by 21-27%.

Improved the aesthetics of the textile, so what. reduced the number worsen the appearance of woven fabrics of yarn defects slub Y1,5

1.8-2 times and thinning In0,73.4-4.1 times.

By aggregating standardized indicators yarn, obtained by the proposed method enzymatic-peroxide preparation vysokomehanizirovannoe flax rovings, characterized by a higher grade.

Comparative results of the quality of the prepared rovings and get the yarn on the proposed method
Indicators of quality of semi-finishedThe value of the indicators in the preparation of Rove on offer and the known methods
example No. 1example # 2example # 3
offerthe placeholderofferoffer
Δ, %138,31411
L., wt.%8,4/2,158,4/3,36 6,3/1,8910,1/3,05
P, wt.%2,7/0,392,7/1,493,3/0,503,6/0,54
Δ, %85458585
HZ, wt.%10,5/7,3510,5/3,6713,5/8,7512,8/to 8.41
Δ, %30653534
ΔM, %68437065
B, %55,022,856,1of 54.8
T Tex53,356,653,056,2
WithT, %2,2of 5.41,92,6
The1,5, pieces/km1920357017801940
The0,7, pieces/km117139609701050
TofCD./m550524562547
WithTo, %7,99,47,28,1
PpCH1327114713061298
Py, CN/Tex25,020,324,623,1
WithP, %11,3a 21.510,212,4
r (kgf·cm/g42,640,443,443,7
Withr,%of 5.47,95,15,9
ΔBo0,380,390,370,39
Δmo0,250,180,250,23
ΔOST0,370,430,380,38
nAndcycles6745543268976589
N, arr./100 ver·h45804050
Grade1 OTL1 NBL1 OTL1 IN
Notes: 1) in the numerator and denominator of the conditional fraction values impurity content, respectively, in the harsh rovings and PEFC is holding its preparation; 2) grade yarn: VL and vysogornaya and vysokovskaja; NBL - regnelliana.

The method of enzyme-peroxide preparation for spinning vysokomehanizirovannoe flax rovings, including enzymatic processing solution multienzyme preparation, including andprecautions, pectinesterase, protease and ectoparasitosis, washing with water, treatment of alkaline-peroxide solution, washing with detergent and water and antimicrobial treatment, characterized in that before enzymatic treatment multienzyme preparation the roving is subjected to resislance, as multienzyme drug use solution, optionally containing ectoparasitoids, associatedthe and ekzoplanetu, with indicators of enzyme activity, units/ml:

andprecautions20-25
pectinesterase2,5-4,7
proteaseof 0.2-0.3
ectoparasitosis0,6-1,0
ectoparasitoids0,2-0,4
associatedthe0,3-0,5
ekzoplaneta0,6-0,8

the enzyme treatment is carried out at a temperature of 40-50°C for 90-95 min, followed by heating to boiling and exposure for 20-25 min, and the processing of alkali / peroxide solution is carried out at the concentration of hydrogen peroxide 0.6-0.8 g/l (active oxygen) and total alkalinity of 6.5-7.0 g/l (in terms of caustic soda) for 90-95 minutes



 

Same patents:

FIELD: textile, paper.

SUBSTANCE: invention concerns method of flaxen roving preparation for spinning and can be applied in textile industry. Method of enzyme and peroxide preparation of flaxen roving for spinning involves deacidification performed before enzyme processing for 90-95 minutes by polyenzyme preparation solution with enzyme activity indicators, units per ml: endopolygalacturonase - 20-25; pectinesterase - 0.8-4.7; protease - 0.2-0.3; and exopolygalacturonase - 0.2-0.4. Further the roving is flushed by water and processed for 90-95 minutes in alkaline peroxide solution at hydro peroxide concentration of 0.4-0.5 g/l of active oxygen and total alkalinity of 6.5-7.0 g/l rated per caustic soda, then flushed with detergent and water and undergoes counter-microbe processing.

EFFECT: reduced tear load in moist unprocessed roving up to 50-61%; obtainment of thin yarn meeting the requirements for 1 grade in thickness and stability of physical and chemical yarn properties; enhanced yarn strength in 1,2-1,4 times; improved esthetics of woven canvas exterior.

1 tbl, 3 ex

FIELD: textile, paper.

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FIELD: chemistry.

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FIELD: medicine.

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8 cl, 1 dwg, 1 ex

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5 tbl, 15 ex

FIELD: textile, paper.

SUBSTANCE: invention concerns method of flaxen roving preparation for spinning and can be applied in textile industry. Method of enzyme and peroxide preparation of flaxen roving for spinning involves deacidification performed before enzyme processing for 90-95 minutes by polyenzyme preparation solution with enzyme activity indicators, units per ml: endopolygalacturonase - 20-25; pectinesterase - 0.8-4.7; protease - 0.2-0.3; and exopolygalacturonase - 0.2-0.4. Further the roving is flushed by water and processed for 90-95 minutes in alkaline peroxide solution at hydro peroxide concentration of 0.4-0.5 g/l of active oxygen and total alkalinity of 6.5-7.0 g/l rated per caustic soda, then flushed with detergent and water and undergoes counter-microbe processing.

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1 tbl, 3 ex

FIELD: textile, paper.

SUBSTANCE: invention concerns methods of flax fiber dyeing and preparation for spinning and can be applied in textile industry. Combined method of dyeing and preparation for spinning involves deacidification, processing by digester dye solution for 90-95 minutes at 40-50°C, the solution including vat colour, sodium bicarbonate, sulfonol NP-3 and anhydrous synthanol, polyenzyme preparation with enzyme activity indicators, units per ml of solution: endopolygalacturonase - 20-40; pectinesterase - 2.5 - 8.0; protease - 0.2-0.4; exopolygalacturonase - 0.6-1.5; exogalactosidase - 0.3-0.5; exoxylosidase - 0.3-0.8; exoglucanase - 0.4-1.0. Further the mass is heated to the boiling point, matured for 30-60 minutes, flushed by cold water. Oxidising processing is performed for 15-25 minutes at 20-25°C in stabilised peroxide solution including 0.3-0.4 g/l of hydro peroxide (100%), 1-2 g/l of laundry soap, and alkaline agents to comprise total alkalinity of 5.5-6.0 g/l rated per caustic soda, with further heating for 20-50 minutes to 95-100°C and maturing for 20-30 minutes, followed by double flush with detergent first and with water next, and further deacidification at 45-50°C for 15-20 minutes and flushing.

EFFECT: reduced irregularity of geometrical parametres and durability of flax semiproducts; improved colorability and colour evenness of textile semiproducts; more environment-friendly process and improved labour health.

1 tbl, 3 ex

FIELD: textile, paper.

SUBSTANCE: invention concerns method of flaxen roving preparation for spinning and can be applied in textile industry. Method of enzyme and peroxide preparation of flaxen roving for spinning involves deacidification performed before enzyme processing for 90-95 minutes by polyenzyme preparation solution with enzyme activity indicators, units per ml: endopolygalacturonase - 20-25; pectinesterase - 0.8-4.7; protease - 0.2-0.3; and exopolygalacturonase - 0.2-0.4. Further the roving is flushed by water and processed for 90-95 minutes in alkaline peroxide solution at hydro peroxide concentration of 0.4-0.5 g/l of active oxygen and total alkalinity of 6.5-7.0 g/l rated per caustic soda, then flushed with detergent and water and undergoes counter-microbe processing.

EFFECT: reduced tear load in moist unprocessed roving up to 50-61%; obtainment of thin yarn meeting the requirements for 1 grade in thickness and stability of physical and chemical yarn properties; enhanced yarn strength in 1,2-1,4 times; improved esthetics of woven canvas exterior.

1 tbl, 3 ex

FIELD: textile, paper.

SUBSTANCE: invention concerns methods of flax fiber dyeing and preparation for spinning and can be applied in textile industry. Combined method of dyeing and preparation for spinning involves deacidification, processing by digester dye solution for 90-95 minutes at 40-50°C, the solution including vat colour, sodium bicarbonate, sulfonol NP-3 and anhydrous synthanol, polyenzyme preparation with enzyme activity indicators, units per ml of solution: endopolygalacturonase - 20-40; pectinesterase - 2.5 - 8.0; protease - 0.2-0.4; exopolygalacturonase - 0.6-1.5; exogalactosidase - 0.3-0.5; exoxylosidase - 0.3-0.8; exoglucanase - 0.4-1.0. Further the mass is heated to the boiling point, matured for 30-60 minutes, flushed by cold water. Oxidising processing is performed for 15-25 minutes at 20-25°C in stabilised peroxide solution including 0.3-0.4 g/l of hydro peroxide (100%), 1-2 g/l of laundry soap, and alkaline agents to comprise total alkalinity of 5.5-6.0 g/l rated per caustic soda, with further heating for 20-50 minutes to 95-100°C and maturing for 20-30 minutes, followed by double flush with detergent first and with water next, and further deacidification at 45-50°C for 15-20 minutes and flushing.

EFFECT: reduced irregularity of geometrical parametres and durability of flax semiproducts; improved colorability and colour evenness of textile semiproducts; more environment-friendly process and improved labour health.

1 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to bleaching compositions, which in fact do not contain peroxide bleaches, for bleaching of fabrics. Described is liquid bleaching composition with pH 10 or lower, which contains: (a) complex compound of transitional metal as catalyst of bleaching in air, (b) from 0.001 for 3 wt/wt % of odorant.

EFFECT: obtaining composition, whose bleaching activity is more, than 10 times higher as compared with bleaching activity of composition, containing as odorant molar equivalent of citronellal.

5 cl, 3 tbl, 62 ex

FIELD: chemistry.

SUBSTANCE: particles contain inner coating layer that consist of at least one hydrate-forming mineral salt, and outer coating layer, including 0.2-3 wt % alkali metal silicate with module more than 2.5, particularly 3 to 5. Outer layer is obtained using alkali metal silicate solution with alkali metal silicate concentration 2 to 20 wt %. Dissolution time can be extended by alkali metal silicate concentration lowering in solution used, coating material amount being the same. Dissolution time can be extended significantly according to coating layers sequence and solution concentration with low quantity of alkali metal silicate.

EFFECT: extension of dissolution time.

18 cl, 7 tbl, 18 ex

FIELD: process for treatment of textile materials, in particular, whitening of flax fiber for producing of hygroscopic wool used for medicine purposes.

SUBSTANCE: method involves subjecting flax fiber to oxidizing cooking followed by whitening with the use of hydrogen peroxide in the presence of stabilizing preparation based on oxyethylidene diphosphonic acid; after final rinsing, providing brightening processing, preferably with the use of solution containing higher fatty acid based softener used in an amount of 0.5-1.0 g/l. Method is realized in industrial plants with the use of proper equipment and chemical substances available and produced on industrial scale by home enterprises. Said method does not require substantial alterations in chemical processes.

EFFECT: increased whitening extent, capillarity and moisture absorbing capacity of wool produced.

2 tbl, 5 ex

FIELD: light industry, in particular, raw material dyeing processes used, for example, in whitening of mink skin fur hair.

SUBSTANCE: method involves providing additional tinning of skin with aqueous composition containing sodium chloride, composition based on low-molecular alcohol polyacetals, mixture of non-ionogen surfactants and cyclic terpenes; whitening for 2.0-4.5 hours with the use of aqueous composition containing sodium chloride, potassium persulfate, composition based on mineral and organic acids as pH stabilizers, mixture of primary fatty alcohols as protective admixture and 30%-hydrogen peroxide; providing reduction with the use of aqueous composition comprising sodium chloride, oxalic acid and mixture of non-ionogen surfactants with cyclic terpenes.

EFFECT: improved consumer properties of fur skins.

2 tbl

FIELD: light and fur industry.

SUBSTANCE: invention relates to a composition used for whitening hair cover of fur hides. The composition comprises sodium chloride, hydrogen peroxide, potassium persulfate, the composition based on mineral and organic acid salts - "Antikolor 1" or "Antikolor-2" as an agent for stabilizing pH value, and a mixture of primary saturated alcohols - "Antikolor-3" as a protective additive. The composition provides reducing the negative effect of leather and hair cover of hide. The composition can be used in raw-dye manufacture in treatment of hides with pigmented hair cover, for example, hides of karakul group.

EFFECT: valuable properties of composition.

2 tbl

FIELD: textile industry.

SUBSTANCE: composition contains hydrogen peroxide, aqueous ammonia, silicate-containing hydrogen peroxide stabilizer, nonionic or anionic surfactant, and water, said stabilizer being, in particular, taken separately or in various proportions to each other substances selected from group including kaolin, talc, bentonite, zeolite sorbent, and diatomite.

EFFECT: reduced loss in strength, felting tendency, and rigidity of textiles.

2 tbl, 6 ex

The invention relates to the treatment of textiles by washing or bleaching
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