A reduction cleaning agent for synthetic fibers, its preparation method and application

Abstract

The invention relates to a reductive cleaning agent for synthetic fibers as well as a preparation method and an application of the reductive cleaning agent. The reductive cleaning agent is prepared from raw materials in parts by weight as follows: 250-350 parts of a substance A shown in the specification, 30-80 parts of a substance B shown in the specification, 600-800 parts of a substance C shown in the specification, 20-40 parts of sodium borohydride, 150-250 parts of dimethyl terephthalate / dimethyl isophthalate, 300-500 parts of polyethylene glycol, 35-65 parts of sodium dimethyl isophthalate-5-sulfonate, 0.5-1.5 parts of p-methylbenzene sulfonic acid and 1-3 parts of acetic metal salt. The reductive cleaning agent has a good cleaning effect, a durable effect and a sufficient cleaning effect when used, cannot lose efficacy at high temperature, is stable after meeting with water or absorbing moisture, cannot decompose or release combustible gas or corrosive gas, does not contain carcinogenic aromatic amine or environmental hormone, cannot be influenced by poor storage environment and transportation environment, requires lower transportation cost, has few transportation risks and is a real environment-friendly and efficient printing and dyeing auxiliary.

Description

technical field [0001] The invention relates to a reducing cleaning agent for synthetic fibers, its preparation method and application. Background technique [0002] After polyester and its blended fabrics are dyed with disperse dyes, in order to improve the dyeing fastness, reduction cleaning is usually required. At present, the more common reducing cleaning agents are caustic soda and sodium hydrosulfite. The principle is to use the reducing property of sodium hydrosulfite to destroy the color development system of disperse dyes, so as to achieve the purpose of removing floating color and improving color fastness. [0003] Initially, using alkaline hydrosulfate to restore and clean polyester had great advantages, but under the background of increasingly severe environmental protection situation, stricter safety production management and declining profits of printing and dyeing enterprises, the disadvantages of hydrosulfite also quickly appeared. [0004] The main disadvan...

AI Technical Summary

Problems solved by technology

[0005] (1) Hydrosulfite will spontaneously ignite, especially after absorbing moisture, it will automatically heat up and burn, and fires frequently occur in warehouses storing hydrosulfite

[0006] (2) Hydrosulfur powder is easy to release sulfur dioxide gas when it is in use, which will cause environmental pollution in the workshop and damage the health of workers. At the same time, the harsh working environment will increase the labor cost of the enterprise

[0008] (5) The storage stability of sodium hydrosulfite is very poor, and it will decompose when exposed to the air under low temperature conditions, resulting in a continuous decline in active ingredients

[0009] (6) According to the provisions of the national standard GB6844-86 "Classification and Product Name Number of Dangerous Goods", sodium bicarbonate belongs to the first-class wet flammable goods, so it has high transportation risks and transportation costs

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