Biological finishing liquid and finishing method for resisting fuzzing and pilling of fabric

Abstract

The invention relates to the technical field of after-finishing processing of textiles, and discloses a biological finishing liquid and a finishing method for resisting fuzzing and pilling of fabrics. The biological finishing liquid contains collagen hydrolysate, epoxy resin, a softening agent and a solvent. The invention also discloses an anti-pilling finishing method for the fabric, which comprises the following steps: contacting the fabric with the biological finishing liquid, and drying, the biological finishing liquid contains collagen hydrolysate, epoxy resin, a softening agent and a solvent. When the biological finishing liquid is used for finishing the fabric, the anti-pilling property of the fabric can be improved, and meanwhile, the good hand feeling of the fabric is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of textile post-finishing processing, in particular to a biological finishing liquid and a finishing method for fabrics to prevent fuzzing and pilling. Background Art

[0002] Functional finishing of wool fabrics is to give wool fabrics some functions that they do not originally have through finishing liquid and finishing methods. Wool fabrics have unique appearance and style, excellent warmth retention function, soft touch, bright color, light and comfortable to wear, etc., and are very popular among consumers.

[0003] With the continuous improvement of living standards, people's demand for fabric product functions has changed from single warmth-keeping type to comfort, health, safety, easy care and health care. Functional finishing technology has developed from simple chemical finishing to the current nano finishing technology, biological finishing technology, etc. Therefore, the finishing technology of textile fabrics and the application of various finishing agents are highly valued by wool textile industry.

[0004] At present, most of the textiles people use in daily life are processed with chemical additives. Although they can achieve various functional effects, they are also very harmful to the human body. As textiles gradually move towards the field of green and friendly ecological environment, people's consumption theme has become health, comfort, environmental protection and safety. People hope to use more environmentally friendly and non-toxic skin-friendly finishing agents and finishing methods to replace the existing textile finishing methods. At present, people have studied many anti-pilling finishing methods for fabrics, but they cannot completely solve the problem of ensuring the anti-pilling effect while keeping the fabric feel good after treatment. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem that the finishing liquid in the prior art cannot simultaneously maintain the anti-pilling property and good hand feel of the fabric, and to provide a biological finishing liquid and a finishing method for the anti-pilling property of the fabric. When the biological finishing liquid is used for fabric finishing, it can improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel.

[0006] In order to achieve the above-mentioned object, the first aspect of the present invention provides a biological finishing liquid, which contains collagen hydrolyzate, epoxy resin, softener and solvent.

[0007] Preferably, in the biological finishing liquid, the concentration of the collagen hydrolyzate is 0.5-40 g / L, the concentration of the epoxy resin is 1.0-20 g / L, and the concentration of the softener is 1-30 g / L.

[0008] More preferably, in the biological finishing liquid, the mass ratio of the collagen hydrolyzate, the epoxy resin and the softener is 1:0.3-40:0.1-60, and more preferably 1:1-4:0.6-3.

[0009] Further preferably, the mass ratio of the epoxy resin to the softener is 1:0.6-3.4.

[0010] Preferably, the softener is selected from at least one of aminopolysiloxane emulsion, ternary block copolymer emulsion and hydroxyl-terminated polysiloxane emulsion.

[0011] More preferably, the softener is an aminopolysiloxane emulsion and a ternary block copolymer emulsion.

[0012] Further preferably, the mass ratio of the aminopolysiloxane emulsion to the ternary block copolymer emulsion is 1:0.6-1.

[0013] Preferably, the collagen hydrolysate is a collagen hydrolysate obtained by processing skin gelatin and / or bone gelatin.

[0014] More preferably, the treatment is selected from at least one of acid treatment, alkali treatment and enzyme treatment.

[0015] Further preferably, the weight average molecular weight of the collagen hydrolysate is 1-20 kD, more preferably 10-20 kD.

[0016] The second aspect of the present invention provides the use of the biological finishing liquid described in the first aspect in the anti-pilling treatment of fabrics, preferably wool fabrics.

[0017] The third aspect of the present invention provides a method for finishing fabric against fuzzing and pilling, comprising: contacting the fabric with a biological finishing liquid and then performing a drying treatment; the biological finishing liquid contains collagen hydrolyzate, epoxy resin, softener and solvent.

[0018] Preferably, in the biological finishing liquid, the concentration of the collagen hydrolyzate is 0.5-40 g / L, the concentration of the epoxy resin is 1.0-20 g / L, and the concentration of the softener is 1-30 g / L.

[0019] More preferably, in the biological finishing liquid, the mass ratio of the collagen hydrolyzate, the epoxy resin and the softener is 1:0.3-40:0.1-60, and more preferably 1:1-4:0.6-3.

[0020] Further preferably, the mass ratio of the epoxy resin to the softener is 1:0.6-3.4.

[0021] Preferably, the softener is selected from at least one of aminopolysiloxane emulsion, ternary block copolymer emulsion and hydroxyl-terminated polysiloxane emulsion.

[0022] More preferably, the softener is an aminopolysiloxane emulsion and a ternary block copolymer emulsion.

[0023] Further preferably, the mass ratio of the aminopolysiloxane emulsion to the ternary block copolymer emulsion is 1:0.6-1.

[0024] Preferably, the collagen hydrolysate is a collagen hydrolysate obtained by processing skin gelatin and / or bone gelatin.

[0025] More preferably, the treatment is selected from at least one of acid treatment, alkali treatment and enzyme treatment.

[0026] Further preferably, the weight average molecular weight of the collagen hydrolysate is 1-20 kD, more preferably 10-20 kD.

[0027] Preferably, the contact conditions at least include: temperature of 30-60°C, pH of 4.0-7.5, and time of 20-90 min.

[0028] Further preferably, the proportion of the fabric in the finishing liquid is 0.01-0.16 kg / L.

[0029] Through the above technical scheme, the biological finishing liquid of the present invention contains collagen hydrolyzate, epoxy resin, softener and solvent. Collagen hydrolyzate, as a natural protein, has excellent adhesiveness and can cover a thin film on the surface of the fabric fiber scale layer to make the fiber surface smoother. Collagen hydrolyzate, epoxy resin and softener are used in combination, and the fabric finishing effect is enhanced through the synergistic effect between the components, and the anti-pilling effect of the fabric is further improved. It can also ensure that the fabric has a good feel while improving the anti-pilling property of the fabric. It is further found that the biological finishing liquid of the present invention can improve the appearance of the fabric and extend the service life of the fabric while improving the anti-pilling property and ensuring the feel of the fabric. DETAILED DESCRIPTION

[0030] The endpoints and any values ​​of the ranges disclosed in this article are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article.

[0031] A first aspect of the present invention provides a biological finishing liquid, which contains collagen hydrolyzate, epoxy resin, softener and solvent.

[0032] The inventor of the present invention unexpectedly discovered during the research process of biological finishing liquid that the finishing liquid containing collagen hydrolyzate, epoxy resin and softener has a very good finishing effect when performing fabric finishing. Collagen hydrolyzate, as a natural protein, has excellent adhesiveness and can cover a thin film on the surface of the fabric fiber scale layer to make the fiber surface smoother. The composite use of collagen hydrolyzate, epoxy resin and softener can enhance the fabric finishing effect through the synergistic effect between the components, further improve the anti-pilling effect of the fabric, and ensure that the fabric has a good hand feel while improving the anti-pilling property of the fabric.

[0033] In the present invention, the solvent in the biological finishing liquid is water. The collagen hydrolysate is selected from at least one of the collagen hydrolysates obtained by hydrolysis of type A collagen hydrolysate preparation process, type B collagen hydrolysate preparation process and type C collagen hydrolysate preparation process, preferably the collagen hydrolysate obtained by hydrolysis of type A collagen hydrolysate preparation process. The collagen hydrolysate can be obtained by commercial purchase or prepared by conventional methods in the art. Exemplarily, the type A collagen hydrolysate preparation process mainly includes the following steps:

[0034] 1. Raw material cleaning: select animal skins and bones as raw materials for classification, cleaning and sorting, and remove impurities and dirt on the surface;

[0035] 2. Degreasing treatment: Use hydraulic high-speed stirring degreasing method to remove fat on the surface of raw materials;

[0036] 3. Acidification treatment: immerse the raw materials after degreasing pretreatment in an acid solution with a pH value of 1-3 for 2-8 hours;

[0037] 4. Rinse and soak: Rinse the acid-treated raw materials and then soak them in water for 22-24 hours;

[0038] 5. Heating to extract glue: add the raw materials soaked in step 4 into 40-45°C hot water and heat to 50-70°C to dissolve the collagen fibers into glue;

[0039] 6. Hydrolysis reaction: Mix the glue solution and protease in step 5 to carry out hydrolysis reaction; the amount of protease added is 0.01-0.3wt% of the raw material, and react for 1-5 hours at a temperature of 40-65°C and a stirring speed of 20-200r / min to obtain glue solution;

[0040] 7. Enzyme inactivation treatment: transfer the glue solution prepared in step 6 to a reactor, heat it to 85-95°C, and keep the temperature constant for 10-30 minutes to inactivate the enzyme;

[0041] 8. Purification of the glue solution: purifying the glue solution after the enzyme inactivation treatment in step 7 by filtration and ion exchange methods;

[0042] 9. Concentration treatment: The glue solution purified in step 8 is concentrated under reduced pressure to increase its concentration.

[0043] 10. Drying and molding: Dry the concentrated gelatin solution to obtain the finished product of type A collagen hydrolyzate.

[0044] The preparation process of type B collagen hydrolysate mainly includes the following steps:

[0045] 1. Raw material cleaning: select animal skins and bones as raw materials for classification, cleaning and sorting, and remove impurities and dirt on the surface;

[0046] 2. Limewater pre-soaking: Soak the prepared skin and bone raw materials in limewater with a concentration of about 1-1.5wt% for 1-2 days, and then cut into small pieces;

[0047] 3. Degreasing treatment: Use lime water immersion method to remove fat and dirt from the raw materials after lime water immersion;

[0048] 4. Soaking in lime water: put the raw materials treated in step 3 into an immersion tank and immerse them in lime water (specific gravity is 1.015-1.035) with a concentration of 2-4wt%, the ratio of wet leather to water is 1:3-4, the temperature of the immersion tank is maintained at about 15-20°C, and the immersion time is 15-90 days;

[0049] 5. Cleaning and neutralization: After the raw materials are fully expanded, remove them and wash them with water. After multiple washings, the pH value finally reaches 9.0-9.5; then add water to immerse the raw materials, and adjust the pH with acid under the condition of stirring speed of 20-200r / min. Add acid once every 0.5-1 hour. After 12-16 hours, drain the waste acid water, and then wash it with water and soak it for 8-12 hours;

[0050] 6. Glue extraction treatment: first put hot water with a temperature of 40-50℃ into the glue pot, then pour the raw materials treated in step 5 into the glue pot, and slowly heat it to 55-65℃, and soak for 6-8 hours;

[0051] 7. Hydrolysis reaction: Mix the raw material after the rubber extraction treatment in step 6 with protease for hydrolysis reaction, wherein the amount of protease added is 0.05-0.8wt% of the weight of the raw material, and react for 2-8 hours at a temperature of 45-65° C. and a stirring speed of 20-200 r / min;

[0052] 8. Enzyme inactivation treatment: put the glue solution obtained in step 7 into a reactor, heat it to 85-95°C, and keep the constant temperature for 10-30 minutes to inactivate the enzyme;

[0053] 9. Concentration treatment: put the gelatin solution treated with enzyme inactivation in step 8 into a vacuum concentration tank and perform vacuum concentration at a temperature of 65-70°C;

[0054] 10. Drying the finished product: The concentrated gelatin solution is subjected to gelling, drying, crushing and other treatments to obtain the finished product of type B collagen hydrolysate.

[0055] The preparation process of type C collagen hydrolysate mainly includes the following steps:

[0056] 1. Raw material pretreatment: select animal skins and bones as raw materials for classification, cleaning and chopping;

[0057] 2. Enzymatic treatment: transport the cleaned raw materials to the rubber extraction reactor, add acid to adjust the pH value to 3-6, then add protease for degradation reaction, the amount of protease added is 0.05-0.5wt‰ of the weight of the raw materials after water washing, react for 3-8 hours at a temperature of 40-95℃ and a stirring speed of 20-200r / min; after the reaction is completed, adjust the pH value to 10-12 and keep it for 0-2 hours, and then adjust the pH to 6-7;

[0058] 3. Hydrolysis reaction: Mix the gelatin solution after enzymatic hydrolysis in step 2 with a hydrolase for hydrolysis reaction, wherein the amount of the hydrolase added is 0.1-0.9wt% of the weight of the raw material, and react for 1-8 hours at a temperature of 40-65°C and a stirring speed of 20-200r / min;

[0059] 4. Enzyme inactivation treatment: put the glue solution obtained in step 3 into a reactor, heat it to 85-95°C, and keep the constant temperature for 10-30 minutes to inactivate the enzyme;

[0060] 5. Filtration; filtering the gelatin solution after the enzyme inactivation treatment in step 4, first using bag filtration to remove the residue in the gelatin solution, and then further filtering through a cotton cake filter press to improve the transparency of the gelatin;

[0061] 6. Concentration treatment: The glue solution filtered in step 5 is concentrated by membrane to increase the concentration of the glue solution to more than 26wt%;

[0062] 7. Drying and molding: Dry the glue solution obtained in step 6 to obtain a finished product of type C collagen hydrolyzate.

[0063] According to the present invention, preferably, in the biological finishing liquid, the concentration of the collagen hydrolyzate is 0.5-40 g / L, specifically 0.5 g / L, 10 g / L, 20 g / L, 30 g / L, 40 g / L, or any value between the above two values; the concentration of the epoxy resin is 1.0-20 g / L, specifically 1.0 g / L, 5 g / L, 10 g / L, 15 g / L, 20 g / L, or any value between the above two values; the concentration of the softener is 1-30 g / L, specifically 1.0 g / L, 5 g / L, 10 g / L, 15 g / L, 20 g / L, 25 g / L, 30 g / L, or any value between the above two values. Further preferably, in the biological finishing liquid, the concentration of the collagen hydrolyzate is 5-20g / L, specifically 5g / L, 10g / L, 15g / L, 20g / L, or any value between the above two values; the concentration of the epoxy resin is 10-20g / L, specifically 10g / L, 15g / L, 20g / L, or any value between the above two values; the concentration of the softener is 3-15g / L, specifically 3g / L, 5g / L, 7g / L, 9g / L, 11g / L, 13g / L, 15g / L, or any value between the above two values. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can better improve the anti-pilling property of the fabric while ensuring that the fabric has a good feel when used for fabric finishing.

[0064] According to the present invention, it is further preferred that in the biological finishing liquid, the mass ratio of the collagen hydrolyzate, the epoxy resin and the softener is 1:0.3-40:0.1-60, specifically 1:0.3:0.1, 1:20:30, 1:40:60, or any value between the above ratios; more preferably 1:1-4:0.6-3, specifically 1:1:0.6, 1:4:3, 1:2:2, or any value between the above two ratios. The inventors have found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel when used for fabric finishing.

[0065] According to the present invention, further preferably, the mass ratio of the epoxy resin to the softener is 1:0.6-3.4, specifically 1:0.6, 1:2, 1:3.4, or any value between the above two ratios. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel when used for fabric finishing.

[0066] According to the present invention, preferably, the softener is selected from at least one of aminopolysiloxane emulsion, ternary block copolymer emulsion and terminal hydroxyl polysiloxane emulsion; further preferably, the softener is aminopolysiloxane emulsion and ternary block copolymer emulsion; more preferably, the mass ratio of the aminopolysiloxane and the ternary block copolymer is 1:0.6-1; specifically, it can be 1:0.6, 1:0.8, 1:1, or any value between the above two values. Aminopolysiloxane emulsion, ternary block copolymer emulsion and terminal hydroxyl polysiloxane emulsion can be obtained by commercial purchase, or prepared by conventional preparation methods in the art. Exemplarily, aminopolysiloxane emulsion is purchased from Huangshan Kebei New Material Technology Co., Ltd., product number FD-1146; ternary block copolymer emulsion is purchased from Weifang Ruiguang Chemical Co., Ltd., product number RG-RDH / 30A; terminal hydroxyl polysiloxane emulsion is purchased from Shenzhen Jipeng Silicon Fluoride Material Co., Ltd., product number JP-203. The inventors have found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel when used for fabric finishing.

[0067] According to the present invention, preferably, the collagen hydrolysate is a collagen hydrolysate obtained after skin gelatin and / or bone gelatin are treated. Further preferably, the treatment is selected from at least one of acid treatment, alkali treatment and enzyme treatment; skin gelatin is a protein obtained by partial hydrolysis of animal cortex (such as pig skin, cowhide); bone gelatin is a colloid product made from animal bones (such as cow bones) after chemical treatment. Skin gelatin and bone gelatin can be obtained commercially. Exemplarily, the method of obtaining collagen hydrolysate by acid treatment of cortex gelatin can be prepared according to the method of preparation process of type A collagen hydrolysate; the method of obtaining collagen hydrolysate by alkali treatment of bone gelatin can be prepared according to the method of preparation process of type B collagen hydrolysate; the method of obtaining collagen hydrolysate by enzyme treatment of bone gelatin can be prepared according to the method of preparation process of type C collagen hydrolysate. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric when used for fabric finishing while ensuring that the fabric has a good feel.

[0068] According to the present invention, further preferably, the weight average molecular weight of the collagen hydrolyzate is 1-20kD, specifically 1kD, 5kD, 10kD, 15kD, 20kD, or any value between the above two values; more preferably 10-20kD, specifically 10kD, 15kD, 20kD, or any value between the above two values. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel when used for fabric finishing.

[0069] The above raw materials can be obtained commercially.

[0070] The second aspect of the present invention provides the use of the biological finishing liquid described in the first aspect in the anti-pilling treatment of fabrics, preferably wool fabrics. The inventors have found that the biological finishing liquid of the present invention can further improve the anti-pilling property of wool fabrics while ensuring that the fabric has a good feel when finishing wool fabrics. Collagen hydrolyzate, as a natural protein, has excellent adhesion and can cover a thin film on the surface of the fabric fiber scale layer to make the fiber surface smoother. The use of collagen hydrolyzate, epoxy resin and softener in combination can comprehensively utilize the advantages of each component to form a synergistic effect, thereby enhancing the fabric finishing effect, further improving the anti-pilling effect of the fabric, and ensuring that the fabric has a good feel while improving the anti-pilling property of the fabric. It was further found that this improvement is not only reflected in the improvement in appearance, but also in the extension of service life.

[0071] The third aspect of the present invention provides a method for finishing fabrics against pilling, comprising: contacting the fabric with a biological finishing liquid and then performing a drying treatment; the biological finishing liquid contains collagen hydrolyzate, epoxy resin, softener and solvent. The inventors have found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel when used for fabric finishing.

[0072] According to the present invention, preferably, in the biological finishing liquid, the concentration of the collagen hydrolyzate is 0.5-40g / L, specifically 0.5g / L, 10g / L, 20g / L, 30g / L, 40g / L, or any value between the above two values; the concentration of the epoxy resin is 1.0-20g / L, specifically 1.0g / L, 5g / L, 10g / L, 15g / L, 20g / L, or any value between the above two values; the concentration of the softener is 1-30g / L, specifically 1.0g / L, 5g / L, 10g / L, 15g / L, 20g / L, 25g / L, 30g / L, or any value between the above two values. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can improve the anti-pilling property of the fabric while ensuring that the fabric has a good feel when used for fabric finishing.

[0073] According to the present invention, further preferably, in the biological finishing liquid, the concentration of the collagen hydrolyzate is 20-40g / L, specifically 20g / L, 30g / L, 40g / L, or any value between the above two values; the concentration of the epoxy resin is 10-20g / L, specifically 10g / L, 15g / L, 20g / L, or any value between the above two values; the concentration of the softener is 15-30g / L, specifically 15g / L, 20g / L, 25g / L, 30g / L, or any value between the above two values. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric when used for fabric finishing while ensuring that the fabric has a good feel.

[0074] According to the present invention, it is further preferred that in the biological finishing liquid, the mass ratio of the collagen hydrolyzate, the epoxy resin and the softener is 1:0.3-40:0.1-60, specifically 1:0.3:0.1, 1:20:30, 1:40:60, or any value between the above ratios; more preferably 1:1-4:0.6-3, 1:1-4:0.6-3, specifically 1:1:0.6, 1:4:3, 1:2:2, or any value between the above two ratios. The inventors have found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel when used for fabric finishing.

[0075] According to the present invention, further preferably, the mass ratio of the epoxy resin to the softener is 1:0.6-3.4, specifically 1:0.6, 1:2, 1:3.4, or any value between the above two ratios. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel when used for fabric finishing.

[0076] According to the present invention, preferably, the softener is selected from at least one of aminopolysiloxane emulsion, ternary block copolymer emulsion and terminal hydroxyl polysiloxane emulsion; further preferably, the softener is aminopolysiloxane emulsion and ternary block copolymer emulsion; more preferably, the mass ratio of the aminopolysiloxane emulsion and the ternary block copolymer emulsion is 1:0.6-1, specifically 1:0.6, 1:0.8, 1:1, or any value between the above two values. Aminopolysiloxane emulsion, ternary block copolymer emulsion and terminal hydroxyl polysiloxane emulsion can be obtained by commercial purchase, or prepared by conventional preparation methods in the art. Exemplarily, aminopolysiloxane emulsion is purchased from Huangshan Kebei New Material Technology Co., Ltd., product number FD-1146; ternary block copolymer emulsion is purchased from Weifang Ruiguang Chemical Co., Ltd., product number RG-RDH / 30A; terminal hydroxyl polysiloxane emulsion is purchased from Shenzhen Jipeng Silicon Fluoride Material Co., Ltd., product number JP-203. The inventors have found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel when used for fabric finishing.

[0077] According to the present invention, preferably, the collagen hydrolysate is a collagen hydrolysate obtained after skin gelatin and / or bone gelatin are treated. Further preferably, the treatment is selected from at least one of acid treatment, alkali treatment and enzyme treatment; skin gelatin is a protein obtained by partial hydrolysis of animal cortex (such as pig skin, cowhide); bone gelatin is a colloid product made from animal bones (such as cow bones) after chemical treatment. Skin gelatin and bone gelatin can be obtained commercially. Exemplarily, the method of obtaining collagen hydrolysate by acid treatment of cortex gelatin can be prepared according to the method of preparation process of type A collagen hydrolysate; the method of obtaining collagen hydrolysate by alkali treatment of bone gelatin can be prepared according to the method of preparation process of type B collagen hydrolysate; the method of obtaining collagen hydrolysate by enzyme treatment of bone gelatin can be prepared according to the method of preparation process of type C collagen hydrolysate. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric when used for fabric finishing while ensuring that the fabric has a good feel.

[0078] According to the present invention, further preferably, the weight average molecular weight of the collagen hydrolyzate is 1-20kD, specifically 1kD, 5kD, 10kD, 15kD, 20kD, or any value between the above two values; more preferably 10-20kD, specifically 10kD, 15kD, 20kD, or any value between the above two values. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good hand feel when used for fabric finishing.

[0079] According to the present invention, preferably, the contact conditions at least include: temperature of 30-60°C, specifically 30°C, 40°C, 50°C, 60°C, or any value between the above two values; pH of 4.0-7.5, specifically 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, or any value between the above two values; time of 20-90min; specifically 20min, 30min, 40min, 50min, 60min, 70min, 80min, 90min, or any value between the above two values. The inventors found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric when used for fabric finishing while ensuring that the fabric has a good feel. Exemplarily, the contact device can use a fully automatic shrinking machine for heating and heat preservation to ensure that the temperature of the contact condition is between 30-60°C.

[0080] According to the present invention, further preferably, the proportion of the fabric in the finishing liquid is 0.01-0.16 kg / L, specifically 0.01 kg / L, 0.03 kg / L, 0.05 kg / L, 0.07 kg / L, 0.09 kg / L, 0.11 kg / L, 0.13 kg / L, 0.15 kg / L, 0.16 kg / L, or any value between the above two values. The inventors have found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good feel when used for fabric finishing.

[0081] According to the present invention, preferably, the drying conditions at least include: a temperature of 50-90°C, specifically 50°C, 60°C, 70°C, 80°C, 90°C, or any value between the above two values; a time of 5-30min, specifically 5min, 10min, 15min, 20min, 25min, 30min, or any value between the above two values. The inventors have found that when the above preferred embodiment is adopted, the biological finishing liquid can further improve the anti-pilling property of the fabric while ensuring that the fabric has a good feel when used for fabric finishing. Exemplarily, a drum dryer can be used to dry the fabric.

[0082] As a relatively preferred embodiment of the present invention, a method for finishing a fabric against pilling, taking wool knitted fabric finishing as an example, comprises the following steps:

[0083] (1) Preparation of biological finishing liquid

[0084] Dissolve 20-40g of collagen hydrolysate (prepared by a preparation process of type A collagen hydrolysate, with a weight average molecular weight of 10-20kD) in 1-2L of water, and stir with a high-speed stirrer. After the collagen hydrolysate is fully dissolved, mix it with 20-160g of epoxy resin and 12-120g of softener, and the mass ratio of collagen hydrolysate, epoxy resin and softener is 1:1-4:0.6-3; wherein the softener is an aminopolysiloxane emulsion and a ternary block copolymer emulsion, and the mass ratio is 1:0.6-1. Stir quickly and evenly, add 10-40L of water, and obtain a biological finishing liquid with a pH of 4.0-7.5.

[0085] (2) Finishing of wool knitted fabrics

[0086] Add the above biological finishing liquid into a fully automatic shrinking machine, heat it to 30-60°C and mix it with 0.1-6.4kg of rinsed wool knitted fabric, the proportion of fabric in the finishing liquid is 0.01-0.16kg / L; keep it warm and tumble run at a temperature of 30-60°C for 20-90min, transfer the wool knitted fabric into a drum dryer for dehydration, and heat and dry the dehydrated wool knitted fabric at a temperature of 50-90°C for 5-30min.

[0087] The present invention will be described in detail below through examples.

[0088] In the following examples, the pilling performance was determined according to the method in the standard GB / T 4802.3-2008 Determination of pilling performance of textile fabrics Part 3: Pilling box method; the wool fabric used in the examples was purchased from Inner Mongolia Luwang Cashmere Co., Ltd., with a product batch number of 24YCYD0672 and a product number of ZXCC46411; collagen hydrolyzate was purchased from Baotou Dongbao Biotechnology Co., Ltd.; epoxy resin was purchased from Shanghai Rufa Chemical Technology Co., Ltd., with a product number of RF-669; aminopolysiloxane emulsion was purchased from Huangshan Kebery New Materials Technology Co., Ltd., with a product number of FD-1146; ternary block copolymer Polymer emulsion was purchased from Weifang Ruiguang Chemical Co., Ltd. with the product number RG-RDH / 30A; terminal hydroxyl polysiloxane emulsion was purchased from Shenzhen Jipeng Silicon Fluoride Materials Co., Ltd. with the product number JP-203; TY reagent was purchased from Dongguan Taiyang Textile Products Co., Ltd. with the product number TY-8804; DBD reagent was purchased from Shandong Shoucheng Chemical Co., Ltd. with the product number LY-100; YQSZ reagent was purchased from Hefei Dibang Nanotechnology Co., Ltd. with the product number JL-1001; unless otherwise specified, the remaining reagents or raw materials are conventional biochemical reagent grade products.

[0089] Example 1

[0090] (1) Preparation of biological finishing liquid

[0091] Dissolve 50g of collagen hydrolysate (prepared by the preparation process of type A collagen hydrolysate, with a weight-average molecular weight of 15kD) in 1L of water and stir with a high-speed stirrer. After the collagen hydrolysate is fully dissolved, add 100g of epoxy resin and 50g of softener. The mass ratio of collagen hydrolysate, epoxy resin and softener is 1:2:1, wherein the softener is an aminopolysiloxane emulsion and a ternary block copolymer emulsion, with a mass ratio of 1:0.6. Stir quickly and evenly, add water to 10L to obtain a biological finishing solution 1 with a pH of 4.0.

[0092] (2) Finishing of wool knitted fabrics

[0093] The above biological finishing liquid is added to a fully automatic shrinking machine, and after heating to 50°C, 1 kg of rinsed wool knitted fabric is added, and the proportion of fabric in the finishing liquid is 0.1 kg / L; the wool knitted fabric is kept warm and tumbled at 50°C for 60 minutes, and the wool knitted fabric is transferred to a drum dryer for dehydration. The dehydrated wool knitted fabric is heated and dried at 70°C for 15 minutes.

[0094] Example 2

[0095] (1) Preparation of biological finishing liquid

[0096] Dissolve 60g of collagen hydrolysate (prepared by type A collagen hydrolysate preparation process, with a weight-average molecular weight of 10kD) in 1L of water and stir with a high-speed stirrer. After the collagen hydrolysate is fully dissolved, add 60g of epoxy resin and 36g of softener. The mass ratio of collagen hydrolysate, epoxy resin and softener is 1:1:0.6, wherein the softener is an aminopolysiloxane emulsion and a ternary block copolymer emulsion in a mass ratio of 1:1. Stir quickly and evenly, add 10L of water to obtain a biological finishing solution 2 with a pH of 5.0.

[0097] (2) Finishing of wool knitted fabrics

[0098] The above-mentioned biological finishing liquid 2 is placed in an automatic shrinking machine, heated to 30°C, and 0.1kg of rinsed wool knitted fabric is added, and the proportion of fabric in the finishing liquid is 0.01kg / L; the wool knitted fabric is kept warm and tumbled at 30°C for 90 minutes, and the wool knitted fabric is transferred to a drum dryer for dehydration. The dehydrated wool knitted fabric is heated and dried at 50°C for 30 minutes.

[0099] Example 3

[0100] (1) Preparation of biological finishing liquid

[0101] 30g of collagen hydrolysate (prepared by type A collagen hydrolysate preparation process, with a weight-average molecular weight of 20kD) was dissolved in 1L of water and stirred with a high-speed stirrer. After the collagen hydrolysate was fully dissolved, 120g of epoxy resin and 90g of softener were added. The mass ratio of collagen hydrolysate, epoxy resin and softener was 1:4:3, wherein the softener was an aminopolysiloxane emulsion and a ternary block copolymer emulsion, with a mass ratio of 1:0.8. The mixture was stirred quickly and evenly, and 10L of water was added to obtain a biological finishing solution 3 with a pH of 6.0.

[0102] (2) Finishing of wool knitted fabrics

[0103] The above-mentioned biological finishing liquid 3 is added to the fully automatic shrinking machine, and after heating to 60°C, 1.6 kg of rinsed wool knitted fabric is added, and the proportion of fabric in the finishing liquid is 0.16 kg / L; the wool knitted fabric is kept warm and tumbled at 60°C for 20 minutes, and the wool knitted fabric is transferred to the drum dryer for dehydration. The dehydrated wool knitted fabric is heated and dried at 90°C for 5 minutes.

[0104] Example 4

[0105] The biological finishing liquid preparation method and the wool knitted fabric finishing method of Example 1 are different in that, in the biological finishing liquid preparation method of step (1), dissolving 50 g of collagen hydrolysate (prepared by the preparation process of type A collagen hydrolysate, with a weight average molecular weight of 15 kD) in 1 L of water is replaced by dissolving 10 g of collagen hydrolysate (prepared by the preparation process of type A collagen hydrolysate, with a weight average molecular weight of 15 kD) in 1 L of water.

[0106] Example 5

[0107] The biological finishing liquid preparation method and the wool knitted fabric finishing method of Example 1 are different in that, in the biological finishing liquid preparation method of step (1), 50 g of collagen hydrolysate (prepared by a type A collagen hydrolysate preparation process, with a weight average molecular weight of 15 kD) is replaced by 50 g of collagen hydrolysate (prepared by a type A collagen hydrolysate preparation process, with a weight average molecular weight of 1 kD).

[0108] Example 6

[0109] The biological finishing liquid preparation method and wool knitted fabric finishing method of Example 1 are used, except that in the biological finishing liquid preparation method of step (1), the addition of 100g epoxy resin and 50g softener is replaced by the addition of 30g epoxy resin and 50g softener.

[0110] Example 7

[0111] The biological finishing liquid preparation method and wool knitted fabric finishing method of Example 1 are used, except that in the biological finishing liquid preparation method of step (1), the addition of 100 g epoxy resin and 50 g softener is replaced by the addition of 100 g epoxy resin and 20 g softener.

[0112] Example 8

[0113] The biological finishing liquid preparation method and the wool knitted fabric finishing method of Example 1 are different in that, in the biological finishing liquid preparation method of step (1), the softener is replaced by aminopolysiloxane emulsion, ternary block copolymer emulsion and terminal hydroxyl polysiloxane emulsion, and the mass ratio of aminopolysiloxane emulsion, ternary block copolymer emulsion and terminal hydroxyl polysiloxane emulsion is 1:0.3:0.1.

[0114] Example 9

[0115] The biological finishing liquid preparation method and the wool knitted fabric finishing method of Example 1 are different in that, in the biological finishing liquid preparation method of step (1), the softener is replaced by aminopolysiloxane emulsion, ternary block copolymer emulsion and terminal hydroxyl polysiloxane emulsion, and the mass ratio of aminopolysiloxane emulsion, ternary block copolymer emulsion and terminal hydroxyl polysiloxane emulsion is 1:40:60.

[0116] Example 10

[0117] The biological finishing liquid preparation method and the wool knitted fabric finishing method of Example 1 are different in that, in the biological finishing liquid preparation method of step (1), the softener is replaced by a ternary block copolymer emulsion and a terminal hydroxyl polysiloxane emulsion, and the mass ratio of the ternary block copolymer emulsion to the terminal hydroxyl polysiloxane emulsion is 1:0.6.

[0118] Embodiment 11

[0119] The biological finishing liquid preparation method and the wool knitted fabric finishing method of Example 1 are different in that, in the biological finishing liquid preparation method of step (1), dissolving 50 g of collagen hydrolysate (prepared by the preparation process of type A collagen hydrolysate, with a weight average molecular weight of 15 kD) in 1 L of water is replaced by dissolving 150 g of collagen hydrolysate (prepared by the preparation process of type A collagen hydrolysate, with a weight average molecular weight of 15 kD) in 1 L of water.

[0120] Example 12

[0121] The biological finishing liquid preparation method and wool knitted fabric finishing method of Example 1 are used, except that in the biological finishing liquid preparation method of step (1), the addition of 100g epoxy resin and 50g softener is replaced by the addition of 250g epoxy resin and 50g softener.

[0122] Embodiment 13

[0123] The biological finishing liquid preparation method and wool knitted fabric finishing method of Example 1 are used, except that in the biological finishing liquid preparation method of step (1), the addition of 100 g epoxy resin and 50 g softener is replaced by the addition of 100 g epoxy resin and 200 g softener.

[0124] Embodiment 14

[0125] The biological finishing liquid preparation method and the wool knitted fabric finishing method of Example 1 are different in that in the biological finishing liquid preparation method of step (1), the mass ratio of the aminopolysiloxane emulsion to the ternary block copolymer emulsion is 1:3.

[0126] Embodiment 15

[0127] The biological finishing liquid preparation method and wool knitted fabric finishing method of Example 1 are used, except that in the biological finishing liquid preparation method of step (1), adding water to 10 L is replaced by adding water to 50 L.

[0128] Example 16

[0129] According to the biological finishing liquid preparation method and wool knitted fabric finishing method of Example 1, the difference is that in the biological finishing liquid preparation method of step (1), 50g of collagen hydrolysate (prepared by the preparation process of type A collagen hydrolysate, with a weight average molecular weight of 15kD) is replaced by 50g of collagen hydrolysate (prepared by the preparation process of type B collagen hydrolysate, with a weight average molecular weight of 15kD). The pH of the prepared biological finishing liquid is 7.5.

[0130] Embodiment 17

[0131] According to the biological finishing liquid preparation method and wool knitted fabric finishing method of Example 1, the difference is that in the biological finishing liquid preparation method of step (1), 50g of collagen hydrolysate (prepared by the preparation process of type A collagen hydrolysate, with a weight average molecular weight of 15kD) is replaced by 50g of collagen hydrolysate (prepared by the preparation process of type C collagen hydrolysate, with a weight average molecular weight of 15kD). The pH of the prepared biological finishing liquid is 7.0.

[0132] Comparative Example 1

[0133] According to the biological finishing liquid preparation method and wool knitted fabric finishing method of Example 1, the difference is that in the biological finishing liquid preparation method of step (1), 50g of collagen hydrolysate (prepared by the preparation process of type A collagen hydrolysate, with a weight average molecular weight of 15kD) is replaced by 50g of TY reagent. TY reagent is a polymer nanomaterial that can form a film on the surface of wool fabric, and the villi on the surface of the fabric are covered by the film, thereby improving the anti-pilling property of the fabric.

[0134] Comparative Example 2

[0135] The method for preparing the biological finishing liquid and the method for finishing wool knitted fabrics in Example 1 are different in that, in the biological finishing liquid preparation method in step (1), 100 g of epoxy resin is replaced with 100 g of DBD reagent. DBD reagent is a cationic auxiliary agent that can form a film on the surface of wool fabric.

[0136] Comparative Example 3

[0137] (1) Preparation of finishing solution: Weigh 125 g of TY reagent, add 25 L of water, stir evenly and set aside.

[0138] (2) Immersion treatment: 1 kg of wool knitted fabric was placed in the above solution and immersed at 30°C for 30 min. After the reaction was completed, it was dehydrated and dried.

[0139] Comparative Example 4

[0140] (1) Preparation of finishing liquid: Weigh 80 g of DBD reagent, which is a cationic additive that can form a film on the surface of wool fabric, add 20 L of water, stir evenly and set aside.

[0141] (2) Immersion treatment: 1 kg of wool knitted fabric was placed in the above solution and immersed at 60°C for 60 min. After the reaction was completed, it was dehydrated and dried.

[0142] Comparative Example 5

[0143] (1) Preparation of finishing liquid: Weigh 100g of YQSZ reagent, add 10L of water, stir evenly and set aside. YQSZ reagent is an anionic water-based closed curing agent. The curing agent reacts with the functional groups on the fiber surface to form chemical bonds, thereby connecting different molecules together to form a cross-linked structure, which will form a film on the surface of the wool fabric. The fluff on the surface of the fabric is covered by the film, thereby improving the anti-pilling property of the fabric.

[0144] (2) Immersion treatment: 1 kg of wool knitted fabric was immersed in the above solution for 60 min.

[0145] (3) Drying and shaping: Place the treated wool knitted fabric in an electric blower dryer and dry it at 60°C for 2 hours.

[0146] The wool knitted fabrics and unfinished wool knitted fabrics after finishing of Examples 1 to 17 and Comparative Examples 1 to 5 were tested for fabric pilling. The pilling performance of the finished wool knitted fabrics was tested in accordance with the standard "GB / T 4802.3-2008 Determination of the pilling performance of textile fabrics Part 3: Pilling box method". During the test, the sample mounted on the polyurethane tube was placed in a wooden box lined with cork at a constant speed and turned over at will. After a specified number of turns, it was compared and rated with the standard physical sample; the test results are shown in Table 1.

[0147] Table 1

[0148]

[0149]

[0150] Note: Fabric Hand Feel Test: Untreated wool knitted fabric feels soft and delicate, A means the treated wool fabric feels harder than the original. A+ means the wool fabric is harder than A, and so on.

[0151] It can be seen from the results in Table 1 that Examples 1 to 17 using the biological finishing liquid of the present invention to finish wool fabrics have significantly better effects than Comparative Examples 1 to 5, and can improve the anti-pilling properties of the fabric while ensuring that the fabric has a good hand feel.

[0152] The biological finishing liquid of the present invention contains collagen hydrolyzate, epoxy resin, softener and solvent. Collagen hydrolyzate, as a natural protein, has excellent adhesiveness and can cover a thin film on the surface of the fabric fiber scale layer to make the fiber surface smoother. The collagen hydrolyzate, epoxy resin and softener are compounded and used to enhance the fabric finishing effect through the synergistic effect between the components, further improve the anti-pilling effect of the fabric, and ensure that the fabric has a good hand feel while improving the anti-pilling property of the fabric. It is further found that the biological finishing liquid of the present invention can improve the appearance of the fabric and extend the service life of the fabric while improving the anti-pilling property and ensuring the hand feel of the fabric.

[0153] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A biological finishing liquid, characterized in that: The biological finishing liquid contains collagen hydrolysate, epoxy resin, softener and solvent.

2. The biological finishing liquid according to claim 1, characterized in that In the biological finishing liquid, the concentration of the collagen hydrolyzate is 0.5-40 g / L, the concentration of the epoxy resin is 1.0-20 g / L, and the concentration of the softener is 1-30 g / L; Preferably, in the biological finishing liquid, the mass ratio of the collagen hydrolyzate, the epoxy resin and the softener is 1:0.3-40:0.1-60, and more preferably 1:1-4:0.6-3; Preferably, the mass ratio of the epoxy resin to the softener is 1:0.6-3.

4.

3. The biological finishing liquid according to claim 2, characterized in that The softener is selected from at least one of aminopolysiloxane emulsion, ternary block copolymer emulsion and hydroxyl-terminated polysiloxane emulsion; Preferably, the softener is an aminopolysiloxane emulsion and a ternary block copolymer emulsion; Preferably, the mass ratio of the aminopolysiloxane emulsion to the ternary block copolymer emulsion is 1:0.6-1.

4. The biological finishing solution according to any one of claims 1 to 3, characterized in that The collagen hydrolysate is a collagen hydrolysate obtained by processing skin gelatin and / or bone gelatin; Preferably, the treatment is selected from at least one of acid treatment, alkali treatment and enzyme treatment; Preferably, the weight average molecular weight of the collagen hydrolysate is 1-20 kD, preferably 10-20 kD.

5. Use of the biological finishing liquid according to any one of claims 1 to 4 in anti-pilling treatment of fabrics, preferably wool fabrics.

6. A method for finishing fabrics against pilling, characterized in that: include: After the fabric is in contact with the biological finishing liquid, it is dried; The biological finishing liquid contains collagen hydrolyzate, epoxy resin, softener and solvent.

7. The finishing method according to claim 6, characterized in that: In the biological finishing liquid, the concentration of the collagen hydrolyzate is 0.5-40 g / L, the concentration of the epoxy resin is 1.0-20 g / L, and the concentration of the softener is 1-30 g / L; Preferably, in the biological finishing liquid, the mass ratio of the collagen hydrolyzate, the epoxy resin and the softener is 1:0.3-40:0.1-60, and more preferably 1:1-4:0.6-3; Preferably, the mass ratio of the epoxy resin to the softener is 1:0.6-3.

4.

8. The finishing method according to claim 7, characterized in that: The softener is selected from at least one of aminopolysiloxane emulsion, ternary block copolymer emulsion and hydroxyl-terminated polysiloxane emulsion; Preferably, the softener is an aminopolysiloxane emulsion and a ternary block copolymer emulsion; Preferably, the mass ratio of the aminopolysiloxane emulsion to the ternary block copolymer emulsion is 1:0.6-1.

9. The finishing method according to any one of claims 6 to 8, characterized in that: The collagen hydrolysate is a collagen hydrolysate obtained by processing skin gelatin and / or bone gelatin; Preferably, the treatment is selected from at least one of acid treatment, alkali treatment and enzyme treatment; Preferably, the weight average molecular weight of the collagen hydrolysate is 1-20 kD, preferably 10-20 kD.

10. The finishing method according to claim 6, characterized in that: The contact conditions at least include: temperature of 30-60°C, pH of 4.0-7.5, and time of 20-90 min; Preferably, the proportion of the fabric in the finishing liquid is 0.01-0.16 kg / L.

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