A kind of wet rubbing fastness improving agent for acid dyes and preparation method thereof

A technology of wet rubbing fastness and acid dyes, applied in dyeing method, textile and papermaking, etc., can solve the problems of complex synthesis process, poor wet rubbing fastness, strict color fixing process, etc., to improve film-forming performance and fixing ability , reduce entanglement, reduce the effect of violent gathering
CN113121790BActive Publication Date: 2022-04-15SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU UNIV
Publication Date
2022-04-15

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Abstract

The invention discloses a wet rubbing fastness improving agent for acid dyes and a preparation method thereof. A chain extender was synthesized from serinol, formic acid and formaldehyde, and then reacted with isophorone diisocyanate, polyester diol and the chain extender, capped with caprolactam, and emulsified at a high speed to obtain a kind of acid dye. Wet rubbing fastness enhancer. Molecules of the wet rubbing fastness improving agent provided by the invention contain a branched cationic structure, which can reduce molecular entanglement and improve the stability of the wet rubbing fastness improving agent; at the same time, the exposed cationic groups are conducive to combining with acid dye anions to form insoluble color lakes And improve the wet rubbing fastness; also because the wet rubbing fastness improving agent contains closed isocyanate groups in the molecule, after unblocking at an appropriate temperature, it can cross-link with the active groups on the fiber to form a film, and the film is firm Covering the fabric further improves the wet rubbing fastness of the fabric.
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Description

technical field

[0001] The invention relates to the technical field of synthesis of textile printing and dyeing auxiliaries, in particular to a wet rubbing fastness improving agent for acid dyes and a preparation method thereof. Background technique

[0002] Traditional acid dyes generally refer to dyes containing acidic groups in their molecular structure. Most of the acidic groups contained are in the form of sulfonate and carboxylate. Under dyeing, therefore, it is customarily called acid dye. There are many kinds of acid dyes, which have the advantages of convenient use, complete chromatogram, and bright color. They are often used for dyeing fibers such as nylon, silk, and wool. When acid dyes are used to dye fabrics, the non-polar part of the dye is combined with the fiber by van der Waals force and hydrogen bond, and the anion part is combined with cationic groups such as amino groups on the fabric by ionic bonds. Due to the presence of a large number of water-solubl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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