Acidic soaping agent

Abstract

The invention discloses an acidic soaping agent, which is characterized by comprising the following components in parts by weight: 80-120 parts of carboxy ethyl thio-succinic acid, 20-60 parts of maleic acid-crylic acid copolymer, 0.3-0.9 part of ethylenediamine dihydrochloride salicyl sodium acetate and 2-6 parts of defoaming agent. The acidic soaping agent disclosed by the invention has the beneficial effects that the acidic soaping agent is free from irritant odor because no acetic acid is added, the acidity of the acidic soaping agent is strong, and the acidic soaping agent has a good effect on neutralizing waste liquor. One working procedure of acid pickling or multiple working procedures of washing can be reduced, the sewage processing pressure is lightened, water is saved, and the cost and time for washing are lowered.

Description

technical field

[0001] The invention relates to an auxiliary agent for printing and dyeing, in particular to an acidic soaping agent. Background technique

[0002] The soaping process is often used in the field of textile printing and dyeing. The main purpose of soaping is to remove hydrolyzed dyes, unfixed dyes and other impurities attached to the fibers. Alkaline soaping agent is usually used. When soaping, the pH value of the cloth surface in the bath is 10-11, which is alkaline. When soaping at high temperature, reactive dyes are prone to bond breakage. Therefore, reactive dyes must be washed three times after alkali fixation. , so that the pH value of the cloth surface is close to neutral before entering the soap bath for soaping. Even so, there is no guarantee that the dyed finished product can be soaped under near-neutral conditions; there are also acidic soaping agents on the market, but the soaping effect and stability are poor, and the formula contains high toxici...