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A method for improving the color fastness to wet rubbing of cellulose fiber indigo dyeing

A technology of cellulose fiber and wet rubbing, which is applied in dyeing, textiles and papermaking, and can solve the problems of low color fastness to wet rubbing of jeans

Inactive Publication Date: 2020-08-25
佛山市卓益纺织布业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low color fastness to wet rubbing of existing jeans, and to provide a method for improving the color fastness to wet rubbing of cellulose fiber indigo dyeing

Method used

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  • A method for improving the color fastness to wet rubbing of cellulose fiber indigo dyeing
  • A method for improving the color fastness to wet rubbing of cellulose fiber indigo dyeing
  • A method for improving the color fastness to wet rubbing of cellulose fiber indigo dyeing

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specific Embodiment approach 1

[0014] Specific embodiment one: present embodiment a kind of method that improves the wet rubbing color fastness of cellulose fiber indigo dyeing carries out according to the following steps: 1, the fast concentrated alkali treatment of cellulose fiber: immerse cellulose fiber in the concentrated alkali solution and process 5 ~15s, then squeezed dry by pressing rollers, immersed in clean water for washing, and then immersed in acetic acid aqueous solution with a pH value of 1~2 for padding treatment; 2. Rapid aldylation on the surface of cellulose fibers: heating sodium periodate aqueous solution, Then keep warm, and then cyclically pad the cellulose fiber treated with the acetic acid aqueous solution in step 1 in the sodium periodate aqueous solution, react for 15min to 30min, then squeeze the cellulose fiber through the pressing roller and then immerse it in the glycerol aqueous solution for circular immersion. Rolling, reacting for 5-10 minutes, then squeezed out by pressing...

specific Embodiment approach 2

[0017] Embodiment 2: This embodiment differs from Embodiment 1 in that: the concentrated alkali solution is an aqueous NaOH solution with a concentration of 150 g / L-250 g / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the concentrated alkali solution is an aqueous NaOH solution with a concentration of 180 g / L-200 g / L. Others are the same as those in the first or second embodiment.

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Abstract

The invention relates to a method for improving the indigo dyeing wet rubbing color fastness of cellulosic fibers. The objective of the invention is to overcome the problem of low wet rubbing color fastness of cowboy wear in the prior art. The method comprises the following steps: 1, rapid concentrated-alkali treatment of cellulosic fibers; 2, rapid formylation of the surfaces of cellulosic fibers; and 3, rapid graft modification of the formylated cellulosic fibers with an aqueous solution of taurine. According to the invention, the sulfonic acid group-modified cellulosic fibers have wet rubbing color fastness of grade 4, meeting the requirement that the grade wet rubbing color fastness should be no less than 3 as prescribed in national standards in China. The method of the invention is applied to the field of cellulosic fiber dyeing.

Description

technical field [0001] The invention relates to a method for improving the color fastness to wet rubbing of cellulose fiber indigo dyeing. Background technique [0002] Denim clothing has been loved by consumers of different levels in my country, especially young people, since the 1990s. The Pearl River Delta in Guangdong, Zibo in Shandong and Changzhou in Jiangsu are the three major denim production bases in China. Among them, the Pearl River Delta is the largest denim industry base in my country, covering a large area and producing a large output. According to statistics, there are currently no less than 200 sizing and dyeing lines for processing and producing denim, 18,000 denim looms, and about 40 finishing production lines. Every year, the Pearl River Delta area produces more than 1 billion meters of denim, accounting for about 40% of the country's total denim production, ranking first in the country, and has become a world-renowned "denim industry base". The areas wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P1/22D06P3/60D06P1/62D06P1/651D06P1/653D06P1/673
CPCD06P1/228D06P1/628D06P1/65118D06P1/6533D06P1/6735D06P3/60
Inventor 巫莹柱黎荇范菲张伟波李亦彪周凯莹李春意
Owner 佛山市卓益纺织布业有限公司
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