Method for dyeing fabric with natural blue pigment matched monascus pigment

Abstract

The invention relates to the field of light chemical industry, and discloses a method for dyeing a fabric with natural blue pigment matched monascus pigment. The method comprises the following steps:mixing two or three solid powders of natural blue pigment Indigoidine, monascus red pigment and monascus yellow pigment to achieve color matching; adding the obtained mixture into water together withpraseodymium chloride and / or lanthanum trioxide and / or sodium sulfonate, adjusting the pH value of the obtained solution to 3-6, adding the fabric into the obtained dyeing solution, raising the temperature to 60-90 DEG C, dyeing the fabric, washing the dyed fabric with water, and drying the washed dyed fabric to complete the dyeing of the fabric, wherein the sum of the mass percentages of the praseodymium chloride and / or lanthanum trioxide and / or sodium sulfonate is 5-10 g / L. The method uses the environment-friendly natural dyes or pigments produced by microbial fermentation to completely replace artificially synthesized dyes or pigments in order to dye silk, wool and other protein fiber fabrics, so the fabric has a good color yield percentage and a good color fastness, and green and ecological printing and dyeing processing of the silk, wool and other protein fiber fabrics is achieved.

Description

technical field [0001] The invention relates to the field of light chemical industry, in particular to a method for dyeing fabrics with natural blue pigment and monascus pigment 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, Japan, South Korea, North Korea, India, Britain, the United States and other countries use natural fiber fabrics printed and dyed with plant dyes as a fashion, and these countries have also been engaged in the research and development of natural dye dyeing. [0003] Now natural dyes are mainly dyes extracted from plants, and plant dyes have...

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