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Method for preparing tender maple leaf natural dyestuff and application thereof

A technology of natural dyes and maple leaves, applied in natural dyes and their application fields, can solve the problems of unnatural color, health damage, discomfort and other problems of fabrics, and achieve the effects of high color fastness, high dyeing rate and safe wearing.

Active Publication Date: 2014-09-10
徐宏伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, almost all of the dyes that are worn in daily life are chemically synthesized dyes. The dyes not only cause harm to nature and people’s health during the production process, but also cause the fabric’s color to look unnatural after the fabric is dyed, and it is also very uncomfortable for people to wear. Uncomfortable, especially for infants and young children, they like to put whatever they take in their mouth, very dangerous

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Wash and dry the tender maple leaves, mechanically pulverize, weigh 1 kg of powder, use 50 kg of 40% ethanol aqueous solution with a pH value of 10, stir, soak for 30 min at a temperature of 95 ° C, remove solid matter after filtration, The filtered liquid is distilled under reduced pressure and concentrated to 5 liters, which is the natural dye of tender maple leaves.

Embodiment 2

[0022] Wash the tender maple leaves, dry them, mechanically pulverize them, weigh 1 kg of powder, use 10 kg of 80% ethanol aqueous solution with a pH value of 8, after stirring, soak for 90 minutes at a temperature of 75 ° C, remove solid matter after filtration, The filtered liquid is distilled under reduced pressure and concentrated to 10 liters, which is the natural dye of tender maple leaves.

Embodiment 3

[0024] Wash the tender maple leaves, dry them, mechanically pulverize them, weigh 1 kg of powder, use 30 kg of 80% ethanol aqueous solution with a pH value of 9, stir, soak for 45 minutes at 85°C, filter and remove solid matter. The filtered liquid is distilled under reduced pressure and concentrated to 5 liters, which is the natural dye of tender maple leaves.

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Abstract

The invention relates to a method for preparing a tender maple leaf natural dyestuff and application thereof. The preparation method comprises the following steps: (1) cleaning the collected tender maple leaves by using clear water, drying in the air and mechanically grinding to obtain tender maple leaf powder; (2) adding the tender maple leaf powder into an aqueous solution of ethanol with the pH value of 8-10, stirring with a wooden stick and standing; (3) performing reflux extraction, raising the temperature of the extracting solution to 75-95 DEG C, and filtering; and (4) obtaining the concentrated tender maple leaf natural dyestuff by utilizing a reduced-pressure distillation method. The environmental pollution is avoided in the process of extracting the concentrated tender maple leaf natural dyestuff; the dyed fabric is soft in touch and safe to wear, carcinogenic and teratogenetic response is avoided, and damage of dyes on the fabric to infants is not needed to be worried after the fabric is put on infants, and the tender maple leaves are abundant, can be extracted simply and is stable in quality.

Description

technical field [0001] The invention relates to natural dyes and the field of application thereof, in particular to a preparation method and application of natural dyes from tender maple leaves. Background technique [0002] In today's society, both science and technology and social economy are developing rapidly, people's living standards are constantly improving, and the quality of life is also undergoing qualitative changes. More and more people will hope not only to eat healthy, but also to wear healthy. However, almost all of the dyes worn in daily life are chemically synthesized dyes, which not only cause harm to nature and people’s health during the production process, but also cause unnatural color of the fabric after the fabric is dyed, and it is also very uncomfortable for people to wear. Uncomfortable, especially for infants and young children, they like to put everything in their mouths, which is very dangerous. Contents of the invention [0003] The purpose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00A01N65/08A01P1/00D06P1/34D06P3/04D06P3/14D06M13/00D06M101/10
Inventor 徐宏伟
Owner 徐宏伟
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