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Preparation method and dyeing method of sapelli wood natural dye

A technology of natural dyes and dyeing methods, applied in the field of sapele wood natural dyes and its dyeing, can solve the problems of high toxicity, environmental pollution, etc., achieve uniform color, broad market prospects, and good dyeing effects

Inactive Publication Date: 2011-03-09
杭州集美印染有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a kind of preparation and dyeing method of Sapele natural dyestuff, which mainly solves the problem in the prior art that the raw materials for the production of synthetic dyestuffs are non-renewable high-carbon products such as petroleum and coal, and the toxicity is high. However, the leftovers and sawdust left over from the current sapele wood manufacturing furniture are mainly treated by incineration and other processing methods, which will cause serious environmental pollution and other technical problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: the preparation method of a kind of sapele wood natural dye of this example, its steps are:

[0032] a. After drying the Sapele wood chips, mechanically crush them to 30 mesh;

[0033] b. Then the crushed Sapele wood powder is 70% ethanol as a solvent, at a temperature of 70°C, after leaching for 60 minutes, filter to remove the filter residue;

[0034] c. After the filtrate is concentrated to 40% of the initial volume through distillation under reduced pressure to 100mmHg, it is separated by filtration to obtain a red solid natural dye and a yellow liquid natural dye;

[0035] d. The yellow liquid natural dye is distilled under reduced pressure and solidified at a low temperature of 45-50°C to obtain a brown-yellow solid natural dye; the red solid natural dye and the brown-yellow solid natural dye are the finished sapele wood natural dyes.

[0036] Apply the dyeing method of the sapele wood natural dye prepared by said method, its step is:

[0037] ...

Embodiment 2

[0038] Embodiment 2: the preparation method of a kind of sapele wood natural dye of this example, its steps are:

[0039] a. After drying the Sapele wood chips, mechanically crush them to 80 mesh;

[0040] b. Then the crushed Sapele wood powder is 70% ethanol as a solvent, at a temperature of 70°C, after leaching for 60 minutes, filter to remove the filter residue;

[0041] c. After the filtrate is concentrated to 40% of the initial volume by distillation under reduced pressure, it is separated by filtration to obtain a red solid natural dye and a yellow liquid natural dye;

[0042] d. The yellow liquid natural dye is distilled under reduced pressure and cured at low temperature to obtain a brown-yellow solid natural dye; the red solid natural dye and the brown-yellow solid natural dye are the finished sapele wood natural dyes.

[0043] Apply the dyeing method of the sapele wood natural dye prepared by said method, its step is:

[0044] Soak the silk fabric in water to f...

Embodiment 3

[0045] Embodiment 3: the preparation method of a kind of sapele wood natural dye of this example, its steps are:

[0046] a. After drying the Sapele sawdust, mechanically crush it to 50 mesh;

[0047] b. Then the crushed Sapele wood powder is 70% ethanol as a solvent, at a temperature of 70°C, after leaching for 60 minutes, filter to remove the filter residue;

[0048] c. After the filtrate is concentrated to 40% of the initial volume by distillation under reduced pressure, it is separated by filtration to obtain a red solid natural dye and a yellow liquid natural dye;

[0049] d. The yellow liquid natural dye is distilled under reduced pressure and cured at low temperature to obtain a brown-yellow solid natural dye; the red solid natural dye and the brown-yellow solid natural dye are the finished sapele wood natural dyes.

[0050] Apply the dyeing method of the sapele wood natural dye prepared by said method, its step is:

[0051]a. Treat the pure cotton fabric in the ...

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Abstract

The invention relates to a natural dye, in particular to a preparation method and dyeing method of a sapelli wood natural dye. The invention mainly solves the technical problems of the prior art that the raw materials of synthetic dyes are renewable high-carbon products such as petroleum and coal which have higher toxicity, and the sapelli wood scraps and saw dust left by the preparation of furniture are mainly processed by incineration and the like so as to cause serious environmental pollution. The preparation method of the sapelli wood natural dye comprises the following steps: pretreating raw material, extracting with ethanol, concentrating and separating, and solidifying at a low temperature. The dyeing method using the sapelli wood natural dye can be adopted to dye wool fabrics, silk fabrics and pure cotton fabrics; the dyed fabrics can not cause environmental pollution; and the fabrics dyed by the natural dye has the advantages of nontoxicity, harmlessness and health.

Description

technical field [0001] The invention relates to a natural dye, in particular to a sapele wood natural dye and a dyeing method using the same. Background technique [0002] Natural dyes and pigment dyeing have a long history in my country. During the Ming and Qing Dynasties, the preparation and dyeing technology of natural dyes in my country have reached a very high level. In addition to self-use, dyes are also exported in large quantities. However, natural dyes have disadvantages such as poor color fastness and few varieties. Therefore, synthetic dyes came out in the middle of the 19th century. Due to their colorful colors, complete chromatograms, washability and light resistance, and low prices, they gradually replaced natural dyes. [0003] The reason why natural dyes have been paid attention to today when synthetic dyes are highly developed is that the animal and plant dyes in natural dyes are extracted from living organisms, have good compatibility with the environment, ...

Claims

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Application Information

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IPC IPC(8): C09B61/00D06P1/34D06P3/60
Inventor 纪俊玲王炜朱美芳李海乐汪媛姚超
Owner 杭州集美印染有限公司
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