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Tetracarboxylic acid for non-iron finishing and preparation and application of tetracarboxylic acid

A tetravalent carboxylic acid and non-ironing finishing technology, which is applied in the fields of sulfide preparation, fiber treatment, textiles and papermaking, etc., to achieve the effect of improving the problem of strength decline, good wrinkle recovery performance, strength retention rate, and high whiteness

Inactive Publication Date: 2019-03-08
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a tetravalent carboxylic acid used for non-ironing finishing and its preparation and application. The non-ironing fabric obtained by the present invention has good wrinkle recovery performance and strong retention rate. In anti-wrinkle finishing, BTCA is expensive and the problem of fabric strength decline has been significantly improved, and it has a wide range of application prospects and market prospects.

Method used

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  • Tetracarboxylic acid for non-iron finishing and preparation and application of tetracarboxylic acid

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Get 22.5 grams of maleic acid (0.22mol) into a 250ml one-necked flask, add 100ml of water to dissolve. Then 8.4 ml of ethanedithiol (0.1 mol) and 1 ml of concentrated sulfuric acid were added to the solution. Then reflux for 12 hours. After the reaction was cooled, a precipitate was precipitated, and a white solid was obtained by suction filtration. After vacuum drying, 32.6 g of a dry solid was obtained, and the yield was 100% (calculated according to the amount of ethanedithiol).

Embodiment 2

[0038] Take 24.5 grams of maleic anhydride (0.25mol) and add it to a 250ml one-necked flask, and add 100ml of water to dissolve it. Then 8.4 ml of ethanedithiol (0.1 mol) and 1 ml of concentrated sulfuric acid were added to the solution. Then reflux for 6 hours. After the reaction was cooled, a precipitate was precipitated, and a white solid was obtained by suction filtration. After vacuum drying, 32.6 g of a dry solid was obtained, and the yield was 100% (calculated according to the amount of ethanedithiol).

Embodiment 3

[0040] A finishing solution with a mass concentration of tetravalent carboxylic acid of 60g / L and sodium hypophosphite of 80g / L. Cotton fabrics were dipped twice and rolled twice, and dried at 80°C for 3 minutes. Bake at 160°C for 180s. After one wash with water, the wrinkle recovery angle WRA=223°, the tear strength retention rate TSR=63.1%, and the whiteness WI=114.

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Abstract

The invention relates to tetracarboxylic acid for non-iron finishing and preparation and application of the tetracarboxylic acid. The tetracarboxylic acid is prepared by steps: dissolving diacid intowater, adding dithioglycol and a catalyst I, and performing heating reaction, cooling and suction filtration to obtain tetracarboxylic acid. An application process includes steps: dissolving the tetracarboxylic acid into water, adding a catalyst II to obtain finishing liquid, soaking a cotton fabric into the finishing liquid, performing twice dipping and twice padding, drying and calcining to obtain a non-iron fabric. The non-iron fabric is excellent in crease recovery performance and high in break strength retention rate, the problem of break strength decline of fabrics and BTCA expensivenessin current polybasic carboxylic acid crease-resistant finishing are evidently improved, and a promising application prospect and market prospect can be achieved.

Description

technical field [0001] The invention belongs to the field of finishing agents and their preparation and application, in particular to a tetravalent carboxylic acid used for non-ironing finishing and its preparation and application. Background technique [0002] Cotton fabric has the characteristics of comfortable wearing and good hygroscopicity, and is loved by people. However, it is easy to wrinkle during taking, difficult to take care of, and cannot meet people's daily needs. Therefore, the anti-wrinkle finishing of cotton fabric has important practical significance. The main reason for the wrinkling of cotton fabrics is that the hydroxyl groups on the molecular chains in the amorphous region of cotton fibers can slip under the action of external force, and form hydrogen bonds in new positions to prevent the molecular chains from returning to their original state. [0003] At present, 2D resin is mainly used in the industry for anti-wrinkle finishing of cotton fabrics. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M13/248C07C319/18C07C323/52D06M101/06
CPCC07C319/18C07C323/52D06M13/248D06M2101/06D06M2200/20
Inventor 何瑾馨李富强董霞唐文君姚金龙向中林
Owner DONGHUA UNIV
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