Lignin-containing anti-shrinkage finishing liquid for wool fabrics and preparation method and application thereof
A technology of lignin and anti-shrinkage, applied in the field of finishing liquid, can solve problems such as the application blank of textile finishing auxiliaries, and achieve the effects of good application and promotion prospect, wide source of raw materials and simple preparation method.
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Embodiment 1
[0037] The preparation method of the anti-shrinkage finishing liquid for wool fabrics containing lignin, the method is as follows:
[0038] (1) Extraction of wool keratin: use waste wool as material, wash with detergent for clothing, then wash with a large amount of water, and dry; at 70 ° C, dissolve 10 g of treated waste wool in a solution containing 15 g of urea and 50 g of urea. The 150 mL aqueous solution of tricarboxyethylphosphine was continuously stirred during the dissolving process, and the dissolving time was 5 h, filtered, and concentrated to obtain a wool keratin solution, and the solid content of the wool keratin solution was 55.3%.
[0039] (2) Modification of wool keratin: In 150 mL of water solvent, add 10 mL of wool keratin solution prepared in step (1), 1.5 mL of chlorosulfonic acid and 1.5 g of chloroacetic acid, and adjust the solution with 30% aqueous sodium hydroxide solution The pH is 10-11, the reaction time is 3 hours, and the reaction temperature is ...
Embodiment 2
[0048] The preparation method of the anti-shrinkage finishing liquid for wool fabrics containing lignin, the method is as follows:
[0049] (1) Extraction of wool keratin: use waste wool as material, wash with detergent for clothing, then wash with a large amount of water, and dry; at 70 ° C, dissolve 10 g of treated waste wool in a solution containing 10 g of urea and 40 g of urea. The 100 mL aqueous solution of tricarboxyethyl phosphine was continuously stirred during the dissolving process, the dissolving time was 5 h, filtered, and concentrated to obtain a wool keratin solution, and the solid content of the wool keratin solution was 58.8%.
[0050] (2) Modification of wool keratin: In 100 mL of water solvent, add 10 mL of wool keratin solution prepared in step (1), 1.0 mL of chlorosulfonic acid and 1.0 g of chloroacetic acid, and adjust the solution with 30% aqueous sodium hydroxide solution The pH is 10-11, the reaction time is 3 hours, and the reaction temperature is 80 ...
Embodiment 3
[0059] The preparation method of the anti-shrinkage finishing liquid for wool fabrics containing lignin, the method is as follows:
[0060] (1) Extraction of wool keratin: use waste wool as material, wash with a cleaning agent for clothing, then wash with a large amount of water, and dry; at 70 ° C, dissolve 10 g of treated waste wool in a solution containing 20 g of urea and 60 g of urea. The 200 mL aqueous solution of tricarboxyethyl phosphine was continuously stirred during the dissolving process, and the dissolving time was 5 h, filtered and concentrated to obtain a wool keratin solution, and the solid content of the wool keratin solution was 54.7%.
[0061] (2) Modification of wool keratin: In 200 mL of water solvent, add 10 mL of wool keratin solution prepared in step (1), 2 mL of chlorosulfonic acid and 2 g of chloroacetic acid, and adjust the pH of the solution with 30% aqueous sodium hydroxide solution is 10-11, stirring continuously, the reaction time is 3 hours, and...
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