Method for dyeing protein fiber fabric with natural blue pigment Indigoidine after color matching

Abstract

The invention relates to the field of light industries, and discloses a method for dyeing protein fiber fabric with a natural blue pigment Indigoidine after color matching. The natural blue pigment Indigoidine, a monascus red pigment and / or a monascus yellow pigment are sequentially added to a solvent for color matching; and the mixture are added to water together with praseodymium chloride or lanthanum trioxide or sodium sulfonate with the mass percentage being 0.1-5 g / L, the pH value is adjusted to 2.5-6.5, the fabric is added into the dyeing liquor, the temperature is heated to 50-95 DEG Cfor dyeing, the fabric is washed with water and dried, and then the dyeing of the fabric is completed. Natural pigments do not produce toxins during fermentation. In order to achieve industrial production, strains must also be used for liquid fermentation so as to solve the shortcomings of plant dyes. Furthermore, some microbial dyes have certain antibacterial effects in addition to bright colors, which indicates that some microbial dyes also have potential application value in the functional finishing of fabric.

Description

technical field [0001] The invention relates to the field of light chemical industry, in particular to a method for dyeing protein fiber fabric with natural blue pigment Indigoidine after color matching. Background technique [0002] Natural dyes are dyes obtained from plant, animal or mineral sources with little or no chemical processing. Natural dyes have good biodegradability and environmental compatibility, and are suitable for the development of high value-added functional and environmentally friendly textiles. At present, environmentally friendly fabrics dyed with natural dyes are quite popular in domestic and foreign markets. Abroad, countries such as Japan, South Korea, North Korea, India, Britain, the United States have used natural fiber fabrics printed and dyed by plant dyes as a fashion, and these countries have also been engaged in research on natural dye dyeing. [0003] Now natural dyes are mainly dyes extracted from plants, and plant dyes have some unavoida...

AI Technical Summary

Problems solved by technology

Developed countries in Europe and the United States have already banned brilliant blue and used phycocyanin as a blue pigment for food additives. my country is still using chemically synthesized brilliant blue as a food coloring. Phycocyanin is more than 1,000 yuan per kilogram, and brilliant blue is less than 100 yuan per kilogram; Secondly, phycocyanin is a kind of protein, which cannot adapt to the process conditions such as temperature during printing and dyeing

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