Low-alkaline scouring agent for continuous rope scouring of cotton fabrics

Abstract

The invention discloses a low-alkaline scouring agent for continuous rope scouring of cotton fabrics. The low-alkaline scouring agent comprises, in percentage by weight, 5%-15% of fatty acid methyl ester polyoxyethylene ether, 5%-15% of isomerized alcohol ether sulphate, 5%-15% of alkyl ethoxy polyglycosides, 15%-25% of isomerized alcohol polyoxyethylene ether, 0.5%-2% of a polyether modified organic silicon defoaming agent and 28%-69.5% of water. A preparation method of the low-alkaline scouring agent comprises steps as follows: (1), isomerized alcohol ether sulphate and water are mixed uniformly, and a proper amount of sodium hydroxide is added until the pH value is adjusted to range from 6 to 7; (2), alkyl ethoxy polyglycosides and fatty acid methyl ester polyoxyethylene ether are added to a mixed solution in the step (1), and the mixture is stirred and mixed uniformly; (3), the solution mixed in the step (2) is heated to 50-60 DEG C, isomerized alcohol polyoxyethylene ether is slowly poured into the solution, and the mixture is stirred and mixed uniformly. The low-alkaline scouring agent is especially suitable for continuous rope pre-processing of pure cotton fabrics, has the advantages of high desizing level, high capillary effect and low foam and can reduce the consumption of caustic soda in the scouring process and reduce pollution of caustic soda to the environment.

Description

technical field [0001] The invention relates to a pretreatment auxiliary agent for textile printing and dyeing, in particular to a low-alkali scouring agent used for rope-like continuous scouring of cotton fabrics. Background technique [0002] Pure cotton gray cloth contains a lot of impurities, including natural impurities of cotton fibers, size and oil on the warp yarn. The presence of these impurities not only makes the fabric yellow in color, rough in hand, but also poor in water absorption. Therefore, pure cotton fabrics not only need to be desized, but also need to be scoured with the main purpose of removing natural impurities, and at the same time remove the size oil that has not been cleaned during desizing, so that the fabric can obtain good water absorption and a cleaner appearance. , to facilitate subsequent processing. [0003] Among all kinds of scouring equipment, rope scouring equipment has the characteristics of good scouring effect and high production ef...

AI Technical Summary

Problems solved by technology

The alkyl glycosides and alcohol ether glycosides used are non-ionic and environmentally friendly surfactants that are easily biodegradable, and have the advantages of strong penetration and high capillary effect, but such raw materials still have a lot of foam. A lot of foam will be generated during the process, which will reduce the washing efficiency, affect the washing effect and increase water consumption

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