Polycarboxylic acid anti-crease finishing technology for low-strength damaged cotton fabric

An anti-wrinkle finishing and polycarboxylic acid technology, applied in the field of dyeing and finishing, can solve the problems of fabric breaking strength damage, etc., and achieve the effects of high strength retention rate, reduced production cost, and good anti-wrinkle performance.

Inactive Publication Date: 2012-06-27
NANTONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU OF THE PEOPLES REPUBLIC OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the existing problems of polycarboxylic acid anti-wrinkle, in addition to controlling the process, most of them overcome the above problems by adding additives. The additives currently used include hydroxyl alcohol amines, boric acid, salts and hydroxy acids, etc., but the above additives The use does not fundamentally solve the problem of fabric fracture strength damage, so only by solving this problem can we widely promote the anti-wrinkle finishing of polycarboxylic acid

Method used

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  • Polycarboxylic acid anti-crease finishing technology for low-strength damaged cotton fabric
  • Polycarboxylic acid anti-crease finishing technology for low-strength damaged cotton fabric
  • Polycarboxylic acid anti-crease finishing technology for low-strength damaged cotton fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Put the cotton fabric (plain cotton muslin) after scouring and bleaching into the pretreatment solution and fully soak it. The rate is 90-100%, and then dried at 70°C for 10 minutes. The amino-terminated polymer is prepared by the following preparation method:

[0018] (a) In an ice bath, slowly add a mixed solution of methyl acrylate and methanol dropwise in diethylenetriamine;

[0019] (b) Carry out Michael addition reaction with diethylenetriamine and methyl acrylate at normal temperature,

[0020] Reacted for 4 hours to obtain light yellow transparent AB 2 type monomer; the reaction formula is:

[0021]

[0022] (c) liquid is transferred in the Erlenmeyer flask, and decompression extracts methanol;

[0023] (d) The temperature was raised to 140° C., and the reaction was continued for 3 hours to obtain the reaction product—an amino-terminated polymer. The reaction formula is:

[0024]

[0025] Reaction formula Condensation polymerization in Chinese and...

Embodiment 2

[0031] 1) Put the cotton fabric (cotton khaki) after scouring and bleaching into the pretreatment solution and fully soak it. The formula of the pretreatment solution is 5g / L of amino-terminated polymer and the rest of water. At 90-100%, then dry at 70°C for 10min. The amino-terminated polymer is the same as in Example 1.

[0032] 2) padding anti-wrinkle finishing solution for cotton fabrics pretreated above, two dipping and two padding, the excess rate is 80%, and the anti-wrinkle finishing solution formula includes 7% by weight of citric acid and 6% by weight of hypophosphorous acid sodium and the remainder water. After padding, dry at 70°C for 10 minutes.

[0033] 3) The cotton fabric treated above is baked at a high temperature of 140° C. for 80 seconds on a tenter setting machine.

[0034] 4) The performance test data of the cotton fabric after finishing according to the above process is as follows:

[0035] The retention rate of breaking strength is 89.2%, the turnin...

Embodiment 3

[0037] 1) Put the cotton fabric (plain cotton muslin) after scouring and bleaching into the pretreatment solution and fully soak it. The formula of the pretreatment solution is 8g / L of amino-terminated polymer and the rest of water. The rate is 90-100%, and then dried at 70°C for 10 minutes. The amino-terminated polymer is the same as in Example 1.

[0038] 2) padding anti-wrinkle finishing solution for cotton fabrics pretreated above, double dipping and two-rolling, the excess rate is 80%, and the formula of anti-wrinkle finishing solution includes 10% by weight of citric acid and 10% by weight of hypophosphorous acid sodium and the remainder water. After padding, dry at 70°C for 10 minutes.

[0039] 3) The cotton fabric treated above is baked at a high temperature of 160° C. for 80 seconds on a tenter setting machine.

[0040] 4) The performance test data of the cotton fabric after finishing according to the above process is as follows:

[0041] The retention rate of bre...

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Abstract

The invention discloses a polycarboxylic acid anti-crease finishing technology for low-strength damaged cotton fabric. The technology comprises the following steps of: steeping the scoured and bleached cotton fabric in preprocessing liquid, steeping twice and rolling twice, and drying, wherein the rolling residual rate is 90-100%, the preprocessing liquid consists of 2-8 g / L amino-blocked polymerand the balance of water; and steeping and rolling the preprocessed cotton fabric in anti-crease finishing liquid, steeping twice and rolling twice, drying and baking at high temperature, wherein therolling residual rate is 80%, and the anti-crease finishing liquid consists of 2-10% of citric acid by weight, 2-10% of sodium monophosphate by weight and the balance of water. Through the invention,the major problem, i.e. strength damage in the anti-crease processing of polycarboxylic acid can be solved; the processed fabric not only has excellent crease resistance, but also has high strength retention rate; the bottleneck limiting the application of polycarboxylic acid in the anti-crease processing is broken through; and meanwhile, the baking temperature and the dosage of polycarboxylic acid can be reduced, thereby being favorable for lowering the production cost.

Description

technical field [0001] The invention relates to a low-strength damage polycarboxylic acid anti-wrinkle finishing process for cotton fabrics, belonging to the technical field of dyeing and finishing. Background technique [0002] When polycarboxylic acid is used for non-ironing finishing of cotton fabric, although the anti-wrinkle effect is good and no formaldehyde is released, the acid will catalyze the hydrolysis of the β-1,4-glycosidic bond of the cellulose fiber, and the esterification and crosslinking of the fabric will also cause Further increases the strength of the damage. In view of the existing problems of polycarboxylic acid anti-wrinkle, in addition to controlling the process, most of them overcome the above problems by adding additives. The additives currently used include hydroxyl alcohol amines, boric acid, salts and hydroxy acids, etc., but the above additives The use of polycarboxylic acid does not fundamentally solve the problem of fabric fracture strength ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/37D06M13/207D06M11/70D06M101/06
Inventor 王红卫王海英张爱平
Owner NANTONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU OF THE PEOPLES REPUBLIC OF CHINA
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