Natural dye

A technology of natural dyes and cochineal red, applied in the field of natural dyes, can solve the problems of destroying ecological balance, many equipment and high energy consumption, and achieves the effects of not easy to change color, overcoming instability, and stable color.

Inactive Publication Date: 2012-03-28
WUJIANG LANRUITE TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with natural dyes, synthetic dyes have the advantages of bright color, washability, light resistance, and mass production. However, synthetic dyes have a long dyeing process, more equipment, high energy consumption, and produce a large amount of waste water to pollute the environment, which seriously damages the ecological balance.
In addition, some synthetic dyes also contain carcinogens. Therefore, synthetic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A natural dye made of cochineal carmine and β-cyclodextrin in microcapsules.

[0016] Mass ratio of microcapsules:

[0017] Cochineal Red 0.3

[0018] β-cyclodextrin 1

[0019] The dye preparation method is:

[0020] The 40% ethanol solution of cochineal was added to the saturated aqueous solution of β-cyclodextrin at 60°C, stirred for 2 hours at a stirring speed of 1500r / min, allowed to stand for 10 hours, and dried to obtain.

Embodiment 2

[0022] A natural dye made of cochineal carmine and β-cyclodextrin in microcapsules.

[0023] Mass ratio of microcapsules:

[0024] Cochineal red 0.6

[0025] β-cyclodextrin 1

[0026] The dye preparation method is:

[0027] Add the 60% ethanol solution of cochineal to the saturated aqueous solution of β-cyclodextrin at 70°C, stir for 3 hours, stir at 2000r / min, stand for 15 hours, and dry to get.

Embodiment 3

[0029] A natural dye made of cochineal carmine and β-cyclodextrin in microcapsules.

[0030] Mass ratio of microcapsules:

[0031] Cochineal 0.5

[0032] β-cyclodextrin 1

[0033] The dye preparation method is:

[0034] The 50% ethanol solution of cochineal was added to the saturated aqueous solution of β-cyclodextrin at 65°C, stirred for 2.5 hours at a stirring speed of 1800r / min, allowed to stand for 12 hours, and dried to obtain.

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PUM

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Abstract

The invention relates to a natural dye which comprises microcapsules prepared from cochineal and beta-cyclodextrin. The invention belongs to the field of textile. According to the invention, the natural pigment cochineal is used for preparing the dye. The dye is healthy, environment-friendly, and satisfies requirements of the development of green fabrics. Also, cochineal and beta-cyclodextrin are subject to clathration, such that microcapsules are prepared, and instability of cochineal is overcome. With the dye, the color of dyed fabrics is stable, and discoloration is not easy to occur.

Description

Technical field: [0001] The invention relates to a natural dye and belongs to the textile field. Background technique: [0002] Dyes have a long history. The ancients extracted natural substances from plants, animals and minerals as dyes. Due to limited technology and few sources of dyes, natural dyes are single in color and expensive, and have not been widely used. [0003] In the 19th century, with the development of organic chemistry research in Western Europe and the separation and preparation of organic aromatic compounds from coal tar, the development of dyes entered the period of synthetic dyes, which were widely used in textile printing and dyeing. Compared with natural dyes, synthetic dyes have the advantages of bright color, washability, lightfastness, and mass production. However, synthetic dyes have long dyeing processes, many equipment, high energy consumption, and generate a lot of waste water to pollute the environment, which seriously damages the ecological balance....

Claims

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Application Information

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IPC IPC(8): C09B67/02
Inventor 赵萍
Owner WUJIANG LANRUITE TEXTILE
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