Textile color fixing agent containing chitosan quaternary ammonium salt and preparation method thereof

Abstract

The invention relates to a textile color fixing agent containing chitosan quaternary ammonium salt and a preparation method thereof, and belongs to the field of research and development and application of textile dyeing auxiliary. At present, the color fixing effect of applying chitosan quaternary ammonium salt to a textile color fixing agent is not good enough. The textile color fixing agent provided by the invention is prepared from the following components in parts by mass: 5-30 parts of chitosan quaternary ammonium salt, 5-20 parts of N,N-dimethyl-N-hydroxyethyl octadecyl ammonium chloride, 0-5 parts of glacial acetic acid, 1-5 parts of TO7 nonionic surfactant, 5-10 parts of epoxy modified silicone oil and 30-60 parts of water. With chitosan quaternary ammonium salt as main color fixing component, the textile color fixing agent provided by the invention is nontoxic, harmless, readily biodegradable and easy and convenient to prepare and process, and realizes a good color fixing effect and causes little influence on the fabric handfeel.

Description

technical field [0001] The invention relates to a textile color-fixing agent containing chitosan quaternary ammonium salt and a preparation method thereof, belonging to the research and application field of textile printing and dyeing auxiliaries. Background technique [0002] Cellulose fiber fabrics such as cotton are usually dyed with reactive dyes. Reactive dyes have complete chromatograms and bright colors. On dyed fabrics, reactive dyes can form covalent bonds with cellulose fibers and be fixed, so they have good color fastness performance. However, reactive dyes are hydrophilic dyes, and there are hydrophilic groups such as sulfonic acid groups in their molecular structure. Due to the existence of such hydrophilic groups, and also due to the fact that dyes and fibers The covalent bond of cyanide can be broken due to hydrolysis, making the color fastness performance of dyed (especially dark) fabrics unsatisfactory. [0003] Color fixing with cationic color fixing agen...

AI Technical Summary

Problems solved by technology

[0005] Chitosan quaternary ammonium salt is obtained by modifying chitosan. As its raw material, chitosan can be dissolved in acidic water medium by virtue of the amino group in its molecular structure, but it cannot be dissolved in neutral or alkaline water. It also has limited water solubility under acidic conditions

The chitosan quaternary ammonium salt obtained by chitosan modification has introduced a cationic quaternary ammonium salt group in the molecular structure, and the water solubility is enhanced, but its solubility in water is still low, and a higher concentration of water-soluble solution (especially in Neutral to alkaline conditions) presents a turbid and opaque appearance. The water-soluble defect of chitosan quaternary ammonium salt limits its application and commercial development in textile color fixing agents to a certain extent.

[0006] Also have the technology that chitosan quaternary ammonium salt is applied in color-fixing agent at present, as open date is April 09, 2014, and publication number is in the Chinese patent of CN103709364A, discloses a kind of quaternary ammonium salt chitosan and organic The preparation method of silicon composite modified cationic waterborne polyurethane color fixing agent, but the process of this preparation method is complex

Another example is that the publication date is April 29, 2015, and the publication number is CN104562803A in the Chinese patent, which discloses a fabric color fixing agent, which is difficult to effectively improve the color fixing performance