Cotton cloth vegetable blue dye

Abstract

The invention relates to a cotton cloth vegetable blue dye, which is prepared by adopting a method comprising the following steps: 1) fetching 25 parts of Strobilanthes flaccidifolius Nees and 30 parts of Polygonum tinctorum, crushing and conducting soaking treatment for 1-2h by using ethyl alcohol with concentration of 95 percent; 2) conducting centrifugal treatment to the treated raw materials by using a centrifuge under the speed of 680-750 rpm, filtering by using an 80-mesh sieve, and removing filter residues to obtain filtrate; 3) conducting distillation treatment to the filtrate at 80DEG C to separate out the ethyl alcohol and obtain dye stock solution; 4) adding chalcanthite with weight which is 3-5 percent of the weight of the dye stock solution into the dye stock solution, and evenly mixing the solution to obtain the blue dye. The vegetable dye provided by the invention is based on a vegetable dye, the dye is natural, safe and nontoxic, the dye adhesive force of the dyed cotton cloth is strong, the dyed cotton cloth does not fade under rubbing and water washing, the dye preparation process and the dye use process are safe and nontoxic, and new pollutants which cause pollution are not formed.

Description

technical field [0001] The invention belongs to the field of dyes, in particular to a vegetable blue dye for cotton cloth. Background technique [0002] Nowadays, the colors of clothes and cloth are various, and the chemical dyes are also various. Although synthetic dyes have vivid colors, they will decompose and produce toxic substances during use. Moreover, the commonly used chemical dye waste liquids are easy to produce pollution and are not easy to handle. The use of synthetic chemical dyes during use will also decompose and produce toxicity during use, causing harm to people. Contents of the invention [0003] The object of the present invention is to provide a vegetable blue dye for cotton cloth, which is dyed with plant raw materials, has bright color, is non-toxic and pollution-free. [0004] The present invention is realized through the following technical solutions: [0005] A vegetable blue dye for cotton prepared using the following method: [0006] (1) Take...

AI Technical Summary

Problems solved by technology

[0002] Nowadays, the colors of clothes and cloth are various, and the chemical dyes are also various. Although synthetic dyes have vivid colors, they will decompose and produce toxic substances during use. Moreover, the commonly used chemical dye waste liquids are easy to produce pollution and are not easy to handle. The use of synthetic chemical dyes during use will also decompose and cause toxicity during use, causing harm to people

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