Method for dyeing fabric with color-matched natural pigment

Abstract

The invention relates to the field of light chemical industry, and discloses a method for dyeing a fabric with a color-matched natural pigment. The method comprises the following steps: respectively dissolving two or three of natural blue pigment Indigoidine, monascus red pigment and monascus yellow pigment in a solvent, and mixing the obtained pigment solutions to achieve color matching; and adding the obtained mixture into water together with praseodymium chloride and / or lanthanum trioxide and / or sodium sulfonate, adjusting the pH value of the obtained solution to 3-6, adding the fabric intothe 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. The method uses the environmentally-friendly natural dyes or pigments produced by microbial fermentation to completely abandon artificially synthesized dyes or pigments in order to dye silk, wool and other protein fiber fabrics, so the fabric of the silk, wool and other protein fibers has a good color yield percentage and a good color fastness, and green and ecological printing and dyeing processingof 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 pigments after matching colors. Background technique [0002] Natural dyes are those 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, 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 research on natural dye dyeing. [0003] Now natural dyes are mainly dyes extracted from plants, and plant dyes have some unavoidable defects. First of all, the ext...

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

Images