Reactive dye acidproof agent and preparation method thereof

Abstract

The invention discloses a reactive dye acidproof agent and a preparation method thereof. The preparation method comprises the following steps: firstly, taking trivinyl tetramine and methyl acrylate asraw materials to react to prepare an amino-terminated compound; and then adding the amino-terminated compound, a fluorine-containing monomer, an initiator, a cross-linking agent and the modified nanomaterial into a mixed solution of tributyl methyl ammonium bis (trifluoromethanesulfonyl) imide salt and 1-hydroxyethyl-3-methylimidazole dinitrile amine salt, and carrying out uniform ultrasonic dispersion to obtain the reactive dye acid-proof agent, so that the acid-proof effect of the reactive dye is greatly improved.

Description

technical field [0001] The invention relates to an antiacid agent for reactive dyes and a preparation method thereof. It belongs to the technical field of dye auxiliaries. Background technique [0002] Reactive dyes, also known as reactive dyes, are a new class of water-soluble dyes that appeared in the 1950s. Reactive dye molecules contain active groups that can react with hydroxyl groups in cellulose and amino groups in protein fibers. A covalent bond is formed, resulting in a "dye-fiber" compound. Reactive dyes have the characteristics of bright color, good level dyeing, simple dyeing method, high color fastness, complete color spectrum and low cost. [0003] Although the reactive groups in the reactive dye molecules are easy to bond with the fibers through covalent bonds, the color fastness is not ideal. During the dyeing process, especially when dyeing dark colors, there will often be a large amount of unfixed reactive dyes on the dyed fabric due to the high concentr...

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Problems solved by technology

[0003] Although the reactive group in the reactive dye molecule is easy to bond with the fiber by covalent bond, the color fastness is not ideal

During the dyeing process, especially when dyeing dark colors, there will often be a large amount of unfixed reactive dyes on the dyed fabric due to the high concentration of the dye. These unfixed dyes are difficult to wash off from the dyed fabric. This part The dye will fade during the washing process; at the same time, the chemical bonds formed between some active groups and fibers are easily hydrolyzed, resulting in low wet fastness

Moreover, the acid resistance of fabrics dyed with reactive dyes is poor, causing problems such as fabrics are easy to fade

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