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Process for synthesizing non-formaldehyde textile easy-care finish resin

A technology of non-ironing finishing and synthesis method, which is applied in the direction of textiles and papermaking, fiber treatment, plant fiber, etc., which can solve the problems of poor non-ironing effect, decline, yellowing and tearing strength of textile cloth, and achieve the improvement of non-ironing finishing effect, the effect of reducing the content

Inactive Publication Date: 2009-05-20
江阴市诺科生物新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Higher content of by-products often causes the product solution to change from normal light yellow to yellow-brown or even reddish-brown, and the actual non-ironing effect is poor. Higher residual glyoxal content leads to severe flooding of the finished textile. Yellowing and significant decrease in tear strength, etc. These defects have greatly affected the non-iron finishing effect and application prospects of this type of product. How to reduce the occurrence of side reactions and reduce the residual glyoxal content while increasing the reaction rate has become an important issue for this type of product. A Difficult Problem in the Synthesis of Species

Method used

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  • Process for synthesizing non-formaldehyde textile easy-care finish resin
  • Process for synthesizing non-formaldehyde textile easy-care finish resin
  • Process for synthesizing non-formaldehyde textile easy-care finish resin

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] 140 grams of glyoxal aqueous solution (glyoxal for industrial use, mass content 40%, pH value 2, the same below), 4 grams of anhydrous sodium acetate, 1.3 grams of anhydrous citric acid and 57 grams of Stir 1,2-hydrazinedicarboxamide, the pH value of the solution is 5.5, keep stirring at 40°C for 5 hours, the pH value hardly changes during the reaction, then cool down to room temperature, add 1 gram of boric acid and stir for 1 hour to obtain a pH value of 4 And a light yellow transparent solution with a solid content of about 40%.

example 2

[0025] Add 140 grams of glyoxal aqueous solution (content 40%), 2.5 grams of anhydrous sodium acetate, 0.8 grams of anhydrous citric acid and 57 grams of 1,2-hydrazine dicarboxamide in a 500 mL three-necked flask and stir, and the pH value of the solution is 5.5 , keep stirring at 40°C for 4 hours, the pH value hardly changes during the reaction, then add 1 gram of ethylenediaminetetraacetic acid disodium salt, 40 grams of methanol and 3 grams of concentrated hydrochloric acid (content 35%), the solution pH value=3.5, Keep stirring at 50° C. for 2 hours, then add an appropriate amount of 40% NaOH solution and deionized water, and finally obtain a light yellow transparent solution with a pH value of 6 and a solid content of about 40%.

example 3

[0026] Example 3 (comparative sample):

[0027] Add 140 grams of glyoxal aqueous solution (content 40%), 4 grams of anhydrous sodium acetate, 1.3 grams of anhydrous citric acid and 68 grams of urea successively in the 500mL there-necked flask and stir, the pH value of the solution=5.5, keep stirring at 50°C for 3 Hour, the pH value hardly changes in the reaction process, add 8 grams of anhydrous citric acid to adjust the pH value of the solution=3.5, then add 40 grams of methyl alcohol, keep stirring at 50 ° C for 2 hours, add an appropriate amount of 40% NaOH solution and deionized water, and finally A yellow-brown transparent solution with a pH value of 6 and a solids content of 40% was obtained.

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Abstract

The invention relates to a synthesis method of non-formaldehyde easy-care finishing resin of textile. The synthesis method comprises the following steps: glyoxal is reacted with an ureido compound under a condition with the existence of a buffering agent and a complex, a pH value of 4 to 8 and the temperature of 20 DEG C to 70 DEG C for 3h to 6h so as to obtain unetherified non-formaldehyde easy-care finishing resin; the complex is added at the beginning of or in the process of the synthesis reaction between glyoxal and the a ureido compound; and the buffering agent is one of citric acid / citrate, citric acid / acetate, tartaric acid / tartarate, salicylic acid / salicylate, phthalic acid / phthalate and alkali phosphates and the complex is organic carboxylic acid or organic carboxylate and the like with a molecular weight of 190 to 420. The non-formaldehyde easy-care finishing resin prepared by the method has higher purity and lower content of remnant glyoxal, has good effect as a textile finishing agent and does not release formaldehyde in the finishing and use of textile.

Description

(1) Technical field [0001] The invention relates to a method for synthesizing formaldehyde-free textile non-ironing finishing resin. Formaldehyde-free textile non-ironing finishing resin is mainly used for non-ironing finishing of cotton fabrics, and can also be used for non-ironing finishing of polyester-cotton, cotton-linen blended fabrics and other fabrics. The invention belongs to the technical field of organic chemical industry. (2) Background technology [0002] Cotton fabrics are breathable, comfortable to wear and soft to the touch, making them one of the most popular textile products. However, cotton fabrics have poor elasticity, are prone to wrinkling, and often need to be ironed after washing. Finishing with non-ironing agents has become one of the most commonly used finishing processes in the textile and apparel industry. [0003] At present, most of the anti-wrinkle and non-ironing finishing agents for fabrics used in industry are composed of silicone emulsio...

Claims

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Application Information

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IPC IPC(8): C08G12/12C08G12/42D06M15/423D06M101/06
Inventor 华明扬
Owner 江阴市诺科生物新材料科技有限公司
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