Method of enzyme peroxide preparation of 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 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

 

Introduction

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

The level of technology

Elementary flax fibre has a smooth spindle-shaped surface and unlike wool or cotton has no adhesion. In this regard, in the textile production of vegetable raw materials are processed in the form of complexes, fragmented in thickness. For this purpose, use mechanical methods of processing libovolneho raw materials (itching) and subsequent chemical decomposition of binders in the structure of bast beam (preparation Rove).

All known methods of preparation Rove is based on the hydrolytic cleavage of the polymer satellites cellulose, which include hemicellulose compounds, pectin, glycoprotein and lignin. Efficient removal of impurities is a complicated technological problem to be solved by 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 number of removed impurities controlled to measure the mass loss of the fiber should not exceed 20%.

There is a method of preparing ovci flax rovings, used Italian Corporation Linificio & Canapificio Nazionale" ['ossola M., Galante Y. M. Scouring of flax rove with the aid of enzymes / Enzyme and Microbial Technology, 2004, V.34 - P.177-186]. It consists of the following stages:

1 - kislovka solution of Hcl (37%) 3 ml/l module 1:10 and a temperature of 50°C for 20 min followed by rinsing;

2 - alkaline boiling at 95°C for 50 min in a solution containing 5 g/l Na2CO35 g/l NaOH and the wetting agent on the basis of ionic and nonionic surfactants;

3 - bleaching solution containing 5.5 g/l NaOH, 5 ml of 11.61 M H2O21 kg Rove and 0.6 g/l of peroxide stabilizer, with heating from 40 to 95°C and aged at 95°C for 45 min;

4 is a three - time washing with water;

5 - antipassive processing solution of acetic acid.

However, although the fiber preparation by this method and provides increase of 1.13 times the number of the resulting yarn, but the resulting semi-finished product has a significant proveto. Thus, the coefficients of variation are the number of yarn - 2.75%of the rupture length of 16.4% and razryvnaya elongation is 12.2%. Illustrative in this regard and statistical data on the number of thickening and thinning with deviations greater than half the average diameter of the yarn, respectively 1911 and 1246 areas at 1 km of yarn, as well as nodes with a thickness in excess of three and five times the average diameter, respectively 6152 and 836 defects 1 to the intermediate product.

Known enzymatic methods of splitting impurities flax stalk or by developing directly on plant material of microorganisms, producing materialsa enzymes, either through the use of selected enzyme preparations [FR 2661420, 1991; DE 4012351, 1991; Pravova G.B. Biosynthesis of pectolytic enzymes the anaerobic bacteria of the genus Clostridium II Diss.... Kida. Biol. Sciences. - Moscow, 1972]. While improving the quality of retting flax reach, primarily due to the destruction of pectin (or polyuronides), which is adhesive based connective tissues, using the influence of the enzyme andprecautions, which also has the common name of pectinase [C. Morvan et al. Degradation of flax polysaccharides with purified endopolyga-lacturonase // Carbohydr. polym., 1990, V.13, No. 2, P.149-164; Zhang J., Henriksson g, Johansson G. Polygalacturonase is the key component in enzymatic retting of flax // J. of Biotechnology, 2000, V.81 - P.85-89].

There are also known ways of preparing flax rovings with the replacement stage alkaline cooking on jobrapido enzyme preparations ['ossola M., Galante Y. M. Scouring of flax rove with the aid of enzymes / Enzyme and Microbial Technology, 2004, V.34 - P.177-186].

Due to selective destruction of certain types of impurities provides a significant reduction in weight loss fiber. However, in alternative embodiments, the enzymatic destruction of various polymeric impurities in the preparation of rovings of flax in the window (French len) Italian specialists identified the reduction of the effectiveness of the enzymes in the row:

pectinase > protease = xylanase = galactomannans > lipase ≥ laccase.

The increase in numbers (fineness) of the yarn is provided only by the effect of pectinase (andprecautions). In this regard, the preferred use of the drug Bioprep 3000 L (f. "Novozymes, Denmark) ['ossola M., Galante sea level 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 treatment solution Bioprep 3000 L activity of pectinase (andprecautions) 16,8 units/ml at 55°C for 30 min in the presence of 1 g/l surfactant and 2 g/l complexing of the drug in 0.1 M acetate buffer pH 5-5,5 in module 1 bath:10;

- water rinse at 80°C;

- bleaching solution containing 5.5 g/l NaOH, 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.

The method provides a 5% increase in the number of yarn along with the increase in 6-13% of its strength. Significantly reduced the number of defects due to the presence of malorazmernyj complexes: the number of bulges in excess of three and five times the average diameter of the yarn decreases, respectively, 1.5 and 2 times as compared with the alkaline-peroxide way the training.

However, the method is only suitable for processing flax fibers obtained from imported French, Dutch material. Drug use Bioprep 3000 L for the preparation of domestic varieties of flax fiber is inefficient because the cleavage of pectin impurities is provided only 25-34%. This is due, apparently, the nature of chemical structure of pectin impurities in raw materials from flax grown in more Northern main flax-growing regions of Russia. As a consequence, the reduction of the breaking load of the rovings in the wet state, which characterizes the degree of attenuation of interfiber bonds with the destruction of the adhesive complex technical fibers and the ability to crushing, as a result of processing of domestic raw materials in accordance with the above method does not exceed 20%.

The closest to the technical nature of the claimed method is enzymatic-peroxide preparation of flax rovings for spinning using domestic enzyme preparation Pectofoetidin PH (TU 64-13-04-87) [Kundi S.A. Development of energy-saving environmentally friendly technologies training flax materials based bioprocesses // Diss.... Kida. technology. of Sciences, Ivanovo, 1999, S.124-152]. This drug contains as a main component andprecautions with the level of activity of 1500 units/g, and southst the matter of enzymes pectinesterase, acidic protease, ectoparasitosis, xylanase and β-glucanase. Activity pectinesterase is 60-80 units/g of protease - 3-10 units/g, β-glucanase - 19 units/g; the content of ectoparasitosis and xylanase in trace quantities. The method includes the following stages:

1 - enzyme treatment at 37-50°C and a pH value of 3.5-7.5 V 20-60 min with a solution containing 3-5 g/l of the drug Pectofoetidin PH that provides the level of enzyme activity, units/ml:

andprecautions4,5-7,5
pectinesterase0,18-0,4
β-glucanase0,06-0,1
protease0,01 0,05...

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

3 - the oxidative boiling solution containing alkaline agents, sodium tripolyphosphate, 0.3 g/l, metasilicate 6.2 g/l soda ash to the total alkalinity of 7.6 g/l (in terms of caustic soda) and hydrogen peroxide 1,49 g/l (in terms of active oxygen), with heating to 98°C and the total duration of 105 minutes;

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 clicks the processing acetic acid 0.9 g/l at 55°C for 15 minutes

The method provides a reduction of weight loss fiber 1.3 times compared to chemical treatment on alkaline-peroxide technology and the best cleavage of pectin impurities than drug Bioprep 3000 L. the Improvement of kalimati fibers in the spinning process is confirmed by the greater magnitude of reduction in breaking load Rove wet to the level of the raw material. When preparing Rove from domestic varieties of flax fibre in this way a controlled rate 1.4 times higher than for enzymatic treatment drug Bioprep.

However, this method has significant drawbacks:

insufficient reduction of the breaking load of the rovings in the wet state with respect to the level of the index for raw Rove (ΔM). It is known that the higher the value ΔMthe higher the degree of preparedness of the fiber subsequent to longitudinal splitting, and it is for the prototype is only 35-38%. This is due to the low degree of removal of pectin substances not exceeding 40-45%, and excessive destruction of hemicellulosic compounds (55%), which is highly undesirable, since the branched macromolecule hemicellulose amortiziruete binders in complex flax fiber and provide the mobility of structural fragments when exposed to external loads, which is essentially puts the d in the subsequent spinning;

- inability to get thin yarn satisfying the requirements of the 1st grade according to GOST 10078-85 indicators and linear density (T) and 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 with the actual getting thicker yarn T=60,6 Tex values of coefficients of variation areT=5.0% andP=21%, which corresponds to a grade of "2 vyskoleny". The disadvantage is due to the same disability cleavage of pectin and lack of preparedness of fibrous material to the grinding;

low yarn strength, characterized by the indices of the breaking load - 1124 SN - and specific breaking load - 24,1 CN/Tex;

- insufficient aesthetic appearance of the formed woven because of the presence of the yarn of a large number of defects in the form of swelling of not more than 1.5 times the average diameter of the yarn Y1,5=3800 pieces/km, and thinning with a diameter of less than 0.7 average diameter0,7=3950 pieces/km

Thus, the known methods of preparation for spinning flax rovings using enzyme preparations do not take into account the specifics him the economic structure of pectin impurities in raw materials from domestic varieties of flax and do not provide a high level of decomposition, with high safety hemicellulosic compounds. Removal of pectins (polyuronides) prevents the existence of ties of their macromolecules with protein, the cleavage of which is not controlled. Insufficient destruction polyuronide-protein adhesive base binders does not allow to achieve high uniformity crushing comprehensive flax fiber and compromise to solve the task, i.e. simultaneously increasing fineness, strength and stability of physical and mechanical properties of the yarn. The presence of a large number of structural defects - thickening, thinning increases the breakage of the yarn in the process of winding and weaving, degrades nakruchivaet fiber quality bleached cloths and appearance of finished products.

The invention

Inventive task was to find a way of enzyme-peroxide preparation of flax rovings for spinning, 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, which would increase the reduction of the breaking load of the rovings in the wet state, to obtain a thin yarn that meets the requirements of GOST simultaneously and in terms fineness and stability physico-fur the practical properties of the yarn, to increase the durability of the yarn, as well as to improve the aesthetic appearance of woven fabrics.

The problem is solved by the fact that in the method of enzyme-peroxide preparation of flax rovings for spinning, 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 roving is subjected to resislance, as multienzyme drug use solution with the parameters of the enzyme activity, units/ml:

- andprecautions - 20-25;

- pectinesterase - 0,8-4,7;

- protease - 0,2-0,3;

- ectoparasitosis - 0,2-0,4;

the enzyme treatment is carried out within 90-95 min, and the processing of alkali / peroxide solution is carried out at the concentration of hydrogen peroxide of 0.4-0.5 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 improve the reduction of the breaking load in a wet state to the level of raw Rove to 50-61%. This is because the invention provides rationalised the destruction of the impurities, providing at Uchenie kalimati integrated fiber. Thus, when processing rovings of domestic and imported varieties of flax raw material quantity selectively remove pectin and protein impurities increases to 80-85% vs. 40-45% of that of the prototype, hemicellulose connections are saved up to 70% (vs. 55% on prototype). In 1.15 times reduced overall weight loss of the fibers in the preparation of rovings;

- the ability to get thin yarn satisfying the requirements of the I grade indicators fineness and stability of physical and mechanical properties of the yarn. So, yarn linear density of 56 Tex, meets the requirements for grade "I vyskoleny" has the coefficients of variation in linear density of 1.6-2%, the breaking load of 10.7-17.5 percent;

to increase the strength of the yarn in the 1.2-1.4 times;

- significantly improve the aesthetic appearance of the formed woven because of the significant reduction in the number of yarn defects in the form of thickening and thinning. Thus, the number of defects slub more than 1.5 times the average diameter of the yarn is reduced 1.7-1.8 times, and the number of thinning with cross-sectional dimension of less than 0.7 average diameter of the defect is reduced by 1.3-1.4 times.

Information confirming the possibility of carrying out the invention

For implementing the method using a roving technical fibers from both domestic varieties of flax raw materials and import, which has been created from the countries of Western Europe.

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 (CYP 3.4.21.) and/or metalloproteinases (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).

Multienzyme preparation can be obtained, for example, when the cultivation of one of the non-pathogenic bacterial strains from the Museum Gosniigenetika, registered under the non-Russian collection of industrial microorganisms (VKPM) Bacillus cir-culans VKPM B-1281, 2988, 5304, Bacillus subtilis VKPM B-2574, Erwinia carotovora VKPM B-1361, 2031, 3455, In-5390 or mushroom producers Penicillium lanosum F-387, Aspergillus awamori 16.

You can use composite preparations, with whom containing a series of enzymes from different microorganisms, for example polygalacturonase endo - and ecstasty Erw. carotovora VKPM B-1358 or In-2892, pectinesterase Century circulans VKPM B-5622 and metallothermic neutral proteinase (CYP 3.4.24.4) of B. subtilis B-1093 or, for example, pectolytic enzymes Asp. awamori 22 and the serine proteinase aspergillomas IN (KF) Asp. flavus VKPM F-591.

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. 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 of 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 reduce the original substr the TA. 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.

Multienzyme preparation may be used in the form of fresh culture filtrates of liquids, stabilized liquid concentrate or powder form after extraction and freeze drying. The method can be implemented in any ratio of components of the multienzyme composition of the drug 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 the first function of the 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 th the processing of alkaline-peroxide solution can be used surfactant wetting and emulsifying action, for example neonol 9/12, EM LC, 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.

The way to implement a consistent implementation of the following operations.

- Raschislova. The purpose of the operation is to remove the acidic degradation products of plant tissues flax stem in terms of processing flax straw and allocation linen fibrous materials. 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 flushing those who practical 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 - 0,8-4,7;

- protease - 0,2-0,3;

- ectoparasitosis - 0,2-0,4.

Temperature and pH are selected on the basis of a compromise combination of Optima on the dependency of the activity of each enzyme on temperature and pH, specific for different microbial sources. For most of the above mesophilic (createpolyline) microorganisms optimum temperature of enzyme activity is 45-50°C, the range of operating pH - neutral and weakly acidic region. Module baths 1:10-1:50. The duration of treatment 90-95 minutes

- Rinsing with water is carried out at a temperature sufficient to inactivate enzymes discharged into the sewage, for example at 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 peroxide in the of oreda at a concentration of 0.4-0.5 g/l in terms of active oxygen, the 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 in terms of caustic soda. 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 (95-98°C) and exposure "on the pile". The total duration 90-95 minutes

- Rinse in three stages. In the first stage, the rovings are treated at 70°C for 10 min with a solution of detergent, predominantly non-ionic surfactant emulsifying action, for example neonol 9/12, EM-3P, HT-washing in manufacturers ' recommended amounts. Next, the rovings washed twice with 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 preparation rovings for spinning and the prototype method performed equally on the following characteristics of Rove (PAC-5) and yarn (PAC-12):

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 pradan the Yu flax. - M.: 1979];

2 - 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.];

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

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

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

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

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

- thickening greater than 1,5dCP(Y1,5, PC/km);

- thinning, less than 0,7dCP(Y0,7pieces/km);

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

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

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

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

12 - grade yarn [GOST 10078-85].

From retina is illustrated by the following examples:

Example 1. The preparation was subjected rovings No. 16 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 by the following technological mode:

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

2 - enzyme processing solution composition multienzyme preparation obtained from the products of cultivation of bacterial strains Erw. carotovora VKPM B-2892, B. circulans VKPM B-5622 and B. subtilis B-1093, with indicators of enzyme activity, units/ml: andprecautions - 25; pectinesterase - 4,7; protease - 0,3; ectoparasitosis to 0.4, with the addition of 1 g/l of neonols 9/12 and 2 g/l of trylon B when the temperature of the solution at 50°C, the module baths, 1:10, the processing time of 95 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 8.0 g/l soda ash to the total alkalinity of 7.0 g/l (in terms of caustic soda) and hydrogen peroxide, 0.5 g/l (in terms of active oxygen). Module baths, 1:10, heated from 45°C to boiling for 45 min and extract "on the pile" for 50 min;

5 - rinse the detergent solution neonol 9/12 with a concentration of 0.5 g/l at 70°C for 10 min and then twice with hot water at 70°C 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 "I vyskoleny".

For comparison, the preparation Rove was performed using on-stage enzymatic treatment of drug Pectofoetidin PH following the sequence of stages and conditions in the method prototype [Kundi S.A. Development of energy-saving environmentally friendly technologies training flax materials based bioprocesses // Diss.... Kida. technology. of Sciences, Ivanovo, 1999, S.124-152]. 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 yarns are presented in the table.

Example 2. The preparation was subjected rovings No. 16 from a mixture of Kostroma and Dutch flax fiber percentage 27:73 to produce a yarn 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 water at 40°C for 10 min;

2 - enzyme treatment solution multienzyme preparation obtained by cultivation of bacter the social strain of Bacillus subtilis VKPM B-2574, indicators of enzyme activity, units/ml: andprecautions - 20; pectinesterase - 0,8; protease - 0,2; ectoparasitosis to 0.2, with the addition of 1 g/l of neonols 9/12 at the solution temperature of 50°C, the module baths, 1:10, the processing time of 90 min;

3 is a three - time washing with hot water at 70°C for 10 min;

4 - treatment of alkaline-peroxide solution containing metasilicate sodium 7,8 g/l soda ash to the total alkalinity of 7.0 g/l (in terms of caustic soda) and hydrogen peroxide 0.4 g/l (in terms of active oxygen). Module baths, 1:10, heated from 45°C to boiling for 45 min and extract "on the stack" within 45 min;

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

6 - antimicrobial treatment, acetic acid, 0.75 g/l at 45°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 "I vyskoleny".

The test results rovings and yarns are presented in the table.

Example 3.

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

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

2 - enzyme treatment solution multienzyme preparation obtained by cultivation of the bacterial strain Bacillus circulans VKPM B-2988, with indicators of enzyme activity, units/ml: andprecautions - 20; pectinesterase - 2,9; protease - 0,3; ectoparasitosis - 0,2.

The solution temperature of 50°C, the module baths, 1:50, duration of treatment 90 min;

3 - rinse solution HT-detergent 0.5 g/l at 85°C for 10 min and twice with hot water at 70°C for 10 min;

4 - treatment of alkaline-peroxide solution containing, g/l: sodium tripolyphosphate, - 0.3, and soda ash to the total alkalinity of 6.5 (NaOH), hydrogen peroxide (0.4 kV), in terms of active oxygen), magnesium sulfate - 0.1, neonol 9/12-1; module baths, 1:10, heated from 45°C to boiling for 45 min and extract "on the stack" within 45 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°C 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, suitable for aggregate n is reremix indicators of the quality requirements of the grade "I vyskoleny".

The test results rovings and yarns are presented in the table.

These tables show that the claimed method is applicable for the preparation of rovings from both imported and domestic raw linseed with a significant increase predomi properties of the fiber and the quality of yarn.

Thus, lowering of the breaking load of the rovings in the wet state to the level of raw Rove Arm increases of 2.0-2.3 times in comparison with the known method of the prototype, which reflects improvements in kalimati fibers in the spinning process. This positive result is due to purposefully adjustable destruction of impurities: removal of pectic substances increased in 2 times, protein compounds 1.5 times, and the destruction of hemicellulose decreased 1.8-2 times. This weight loss fiber in the preparation of the proposed method in 1.18 times smaller than the prototype method.

In the best preparation of complex fibers to uniform fragmentation obtained with a thinner yarn, corresponding to the filling operation parameters of the spinning machine for the production of yarns with a linear density of 56 Tex and meet the aggregate requirements of GOST 10078-85 for a grade of "I vyskoleny". The coefficient of variation in linear density was reduced 2.5-3.1 times, the coefficient of variation for the breaking load is 1.2 to 2 times.

Wysu the military yarn, obtained by the proposed method of preparation of the Rove, has a higher strength: the absolute value of the breaking load is increased in comparison with the known method 1.2-1.3 times, the specific breaking load - 1.3-1.4 times, which significantly reduces the likelihood of breakages in the process of winding and weaving.

1.3-1.8 times reduced the number of defects on the thickness of the yarn Y1,5and I0,7that worsen the appearance of woven cloths which enhances the aesthetics of textiles.

In addition, the proposed method for the preparation of flax rovings is implemented using less stringent conditions of alkaline-peroxide solution: the concentration of hydrogen peroxide is reduced to 3-3,7 times in a decrease in the total alkalinity of 1.08-1.14 times and duration stage for 10-15 minutes

Table
Comparative results of the quality of the prepared Rove (PAC-5) and the resulting yarn (PAC-12) by 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 # 2 Example # 3
1the placeholder23
Weight loss fiber after processing Rove (Δ, %)13,2the 15.612,214,1
The degree of removal of pectic substances (Δ, %)80438583
The degree of removal of proteinaceous compounds (Δ, %)85568083
The degree of removal of hemicelluloses, (Δ, %)28553030
The reduction in breaking load in a wet state to the level of raw Rove (ΔM, %)53265061
The linear density of yarn (T, Tex)55,860,655,2
The coefficient of variation in linear density (CT, %)2,05,01,61,8
The number of defects per 1000 m of yarn:
- thickening exceeding 1,5 dCF(1,5, pieces/km);2235380022112194
- thinning less than 0.7 dCF(Y0,7, pieces/km)3038395028212885
Breaking load (RR, CH)1347112414321363
Specific breaking load (Py, CN/Tex)24,118,525,624,7
The coefficient of variation for breaking load (WithP, %) of 17.021,010,7of 17.5
The varieties of yarn1 high
lnany
2 vyskoleny1 vyskoleny1 vyskoleny

The method of enzyme-peroxide preparation of flax rovings for spinning, 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 with the parameters of the enzyme activity, units/ml:

andprecautions20-25
pectinesteraseof 0.8 to 4.7
proteaseof 0.2-0.3
ectoparasitosis0,2-0,4

the enzyme treatment is carried out within 90-95 min, and is the processing of alkali / peroxide solution is carried out at the concentration of hydrogen peroxide of 0.4-0.5 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 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: filter is made of nonwoven fabric and/or injected filter structures or sheets, i.e. produced after processing the synthetic artificial fibres. At first fibres are processed with antibacterial compounds and sliced to monothreads. Natural, artificial, synthetic, metal fibres or their mixtures are used. Web and felt are formed from these threads. Required number of nonwoven fabric layers is connected, thereafter processed, sliced and rolled.

EFFECT: extended application of aforesaid filters, improved wetting and filtering ability ensured.

31 cl, 16 dwg, 11 ex

FIELD: medicine.

SUBSTANCE: invention relates to using zinc sulfide in articles possessing N antibacterial and antifungal activity. In particular, it can be used in preparing any product able to interact with microorganisms and/or fungi, such as dress, carpets, curtains, bed affiliations and textile materials used for medicinal aims.

EFFECT: valuable properties of articles.

6 cl, 8 tbl, 7 ex

FIELD: medical engineering.

SUBSTANCE: device has gauze fabric manufactured from synthetic fibers coated with bioresorbable biocompatible polymer poly-3-hydroxybutirate.

EFFECT: improved gauze endoprosthesis biocompatibility properties.

FIELD: textile industry, in particular, controlling of yarn processing with enzymes in manufacture of textile materials.

SUBSTANCE: method involves processing single-twist flax-containing yarn comprising 5-50% of short flax fibers with wool and/or synthetic filaments with the use of known amounts of enzymes and conditioning; thereafter, finding out dependence between flexural rigidity defined on the basis of labor consumed for deformation at constant speed of samples of predetermined length against surface having constant curvature, sample length and curvature radius, and averaged on n samples, and number of twists until rupture occurs in direction corresponding to initial twisting of yarn, said parameters being measured after preliminary stretching of samples; measuring number of twists until rupture occurs in indicated manner; determining, on the basis of found out dependence, flexural rigidity corresponding to measured number of twists until rupture occurs.

EFFECT: increased operational efficiency and simplified evaluation of flax-containing yarn for flexural rigidity after processing of individual batches with enzymes at different times in apparatus having single charging volume substantially smaller than amount of basic yarn, and retention of flexural rigidity quality due to yarn twisting until rupture occurs.

5 dwg, 4 tbl

FIELD: antiparasitic agents.

SUBSTANCE: invention relates to novel use of zinc sulfide as antitick agent and can be used in agriculture, in gardens, forestry, medicine, textile industry, and also in human protection. Zinc sulfide is used as additive, in particular, to polymer compositions and threads, fibers, filaments, and filament products obtained from these compositions. Agent is introduced into liquid and solid compositions for cleaning and/or treating textile pile surfaces or pierced pile surfaces, in particular tappets and mokets.

EFFECT: expanded resource of antiparasitic agents.

11 cl, 29 tbl, 10 ex

FIELD: textile base contacting with skin and adapted for producing of cosmetic and rejuvenating effect.

SUBSTANCE: method involves producing stockings, panty-hose or any textile base contacting directly with skin and impregnated with slow-release natural substances by providing following steps: coloring said textile base; treating for imparting softness thereto by introducing combination of biomimetic phospholipids into common bath-tab, said combination including phospholipids GLA-borageamidopropyl PG-dimoniumchloride sodium phosphate in an amount constituting 1.5% of bath volume, phospholipids PCT - cocoamidopropyl PG-dimonium chloride phosphate in an amount constituting 1.5% of bath volume, said combination of phospholipids components facilitating in "attachment" of or impregnation with active substances through electrostatic process and being also antibacterial agent facilitating in regulation of bacterial flora; adding natural active substances to said two phospholipids components, with total amount of natural active substances constituting less than 2.10% of bath volume. Said step of imparting softness or impregnation step is carried out during about 35 min at temperature of from 35 C to 37 C. Natural active substances are found in algae extracts or iris family extracts.

EFFECT: enhanced cosmetic and rejuvenating effect.

8 cl, 1 dwg, 1 ex

FIELD: textile industry, in particular, production of non-woven textile materials based on synthetic filaments and mixtures thereof, in particular, materials containing antimicrobial organosilicon preparation.

SUBSTANCE: method involves introducing polymer filament modifier into non-woven textile material, said modifier being antimicrobial organosilicon preparation in the form of alcoholic solution of oligoethoxysiloxane condensation product with alkyl ether of 4-hydroxybenzoic acid. Method allows stable antimicrobial properties to be imparted to textile material.

EFFECT: increased stability of antimicrobial properties and improved operating parameters of non-woven textile material.

1 dwg, 2 tbl, 9 ex

FIELD: textile industry.

SUBSTANCE: invention relates to technology of treating genuine and synthetic fibrous materials to protect their surface against growth of microorganisms and can find use in manufacture of decorative and finishing or structural materials for spatial objects, in different forms in submarines, in surface or underground tightly sealed rooms, and in precision objects (e.g. electronics) assembly shops. Method comprises radiation graft polymerization of vinyl carboxylic acid from vapors thereof upon irradiation of the yarn with γ-emission source (60Co), neutralization of carboxylic groups of grafted poly(vinyl carboxylic acid) through soaking in aqueous solution of sodium or potassium hydroxide, carbonate, or bicarbonate, and immobilization of alkyl(benzyl)dimethylammonium cation as counter ion.

EFFECT: provided prolonged protection of fibrous materials against attacks of microorganisms.

5 tbl, 15 ex

FIELD: biocide agents.

SUBSTANCE: method of invention related on the whole to finishing of textile materials. Textile materials, including textile museum exhibits, are impregnated with solution of biocidal alkoxysiloxane derivative of 3,6-dichloro-2(4-hydroxyphenoxy)pyridine in organic solvent or aqueous emulsion. Material is then dried at 140-150°C for 3-5 min or kept at ambient temperature for 24 h. Impregnation with above solutions is conducted in presence of γ-aminopropyltriethoxysilane.

EFFECT: imparted moisture-resistant bioprotective properties to textile materials made from various fibers, including colored fibers.

2 cl, 1 dwg, 4 tbl

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 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

The invention relates to the finishing of the textile industry
Up!