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Method for preparing high-quality colorless lacquer wax quickly by ultraviolet decoloring

A UV light, high-quality technology, applied in the recovery/refining of fatty substances, production of fat, fat oil/fat production, etc., can solve problems such as reducing unsaturated fatty acids, and achieve the effect of increasing content and reducing iodine value

Active Publication Date: 2010-12-08
陕西秦乔农林生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Good-quality lacquer wax should minimize the content of unsaturated fatty acids. At present, there is no report at home and abroad to quickly prepare colorless lacquer wax with less than 10% oleic acid and linoleic acid glyceride.

Method used

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  • Method for preparing high-quality colorless lacquer wax quickly by ultraviolet decoloring
  • Method for preparing high-quality colorless lacquer wax quickly by ultraviolet decoloring
  • Method for preparing high-quality colorless lacquer wax quickly by ultraviolet decoloring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] In the first step, the pulp is separated from the seed nucleus:

[0059] Dry the lacquer seeds before use until the moisture content is lower than 8%, crush the lacquer seeds with a blade crusher or mill, and pass through a sieve below 10 meshes. The powder is the pulp part of the lacquer seeds, which accounts for 50% of the lacquer seeds. The breakage rate is less than 0.5%;

[0060] The second step, the preparation of crude lacquer wax:

[0061] The pulp of lacquer seeds is steamed at a temperature above 160°C, and the lacquer wax is directly squeezed out with a screw press; or extracted with non-polar solvents such as petroleum ether, ether, n-hexane, pentane, etc. The volume ratio of the mass to the extraction solvent is 1:15-1:35g / mL, the temperature is 50°C-90°C, extract for 1-3 hours, extract 1-4 times, filter and combine the extracts, and store at 30°C-60°C Concentrate under vacuum, and the concentrate is cooled to room temperature to obtain crude lacquer wax;...

Embodiment 2

[0072] In the first step, the pulp is separated from the seed nucleus:

[0073] Dry the lacquer seeds before use until the moisture content is lower than 8%, crush the lacquer seeds with a blade crusher or mill, and pass through a sieve below 10 meshes. The powder is the pulp part of the lacquer seeds, which accounts for 50% of the lacquer seeds. The breakage rate is less than 0.5%;

[0074] The second step, the preparation of crude lacquer wax:

[0075] Take 10 g of crushed lacquer seed skins with a water content lower than 8%, and use the heat reflux extraction method, using petroleum ether as a solvent, at a temperature of 80°C, a solid-to-liquid ratio of 1:20, an extraction time of 60 minutes, and an extraction frequency of 2 times. After extraction, filter, combine the filtrates, and concentrate in vacuo to obtain the crude extract of lacquer wax;

[0076] The third step, UV light decolorization:

[0077] Take 2 g of lacquer wax in a petri dish with a diameter of 6 cm,...

Embodiment 3

[0086] In the first step, the pulp is separated from the seed nucleus:

[0087] Dry the lacquer seeds before use until the moisture content is lower than 8%, crush the lacquer seeds with a blade crusher or mill, and pass through a sieve below 10 meshes. The powder is the pulp part of the lacquer seeds, which accounts for 50% of the lacquer seeds. The breakage rate is less than 0.5%;

[0088] The second step, the preparation of crude lacquer wax:

[0089] Take 10 g of crushed lacquer seed skins with a water content lower than 8%, and use the heat reflux extraction method, using petroleum ether as a solvent, at a temperature of 80°C, a solid-to-liquid ratio of 1:20, an extraction time of 60 minutes, and an extraction frequency of 2 times. After extraction, filter, combine the filtrates, and concentrate in vacuo to obtain the crude extract of lacquer wax;

[0090] The third step, UV light decolorization:

[0091] Take 2g of lacquer wax in a petri dish with a diameter of 6cm an...

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Abstract

The invention discloses a method for preparing high-quality colorless lacquer wax quickly by ultraviolet decoloring, which comprises the following steps: separating the pulp from the peel of crushed sumach seeds, extracting with a nonpolar solvent to obtain coarse lacquer wax, decoloring the coarse lacquer wax under the irradiation of a 100 to 1,000W ultraviolet lamp and controlling the decoloring temperature at different stages, wherein each stage is 5 to 15 hours; measuring the whiteness and chromaticity of the decolored lacquer wax, monitoring the change of fatty acid in the lacquer wax by using GC-MS and reducing the unsaturated fatty acid content of the colorless lacquer wax to improve product quality. The method can prepare the colorless lacquer wax quickly and avoid using active cargon or carclazyte to prevent lacquer wax loss. The method is simple, convenient, economic, environmentally-friendly and effective and can be used for decoloring and refining industrial coarse wax.

Description

technical field [0001] The invention relates to the technical field of plant extracts, in particular to a preparation method of high-quality lacquer wax. Background technique [0002] Sumac (Toxicodendron vernicifluum) is a traditional special resource in China. It has a long history of cultivation and rich species resources. There are more than 500 million sumac trees with more than 150 varieties. The annual output of sumac seeds is about 1.5 million tons, ranking first in the world. Lacquer wax is the solid fat extracted from the peel of the lacquer seed, the fruit of the lacquer tree, and its appearance is light yellow, off-white or gray-green solid. It has a wide range of uses, and is often used as an ingredient or additive in the production of coatings, daily chemicals, stationery, electrical and electronic technology, textile printing and dyeing, advanced cosmetics, medicine, etc., as well as lubricants, waterproofing agents, adhesives, welding Agents, fillers, fruit...

Claims

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Application Information

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IPC IPC(8): C11B11/00C11B1/10C11B1/08C11B1/04
Inventor 王成章董艳鹤叶建中陈虹霞周昊
Owner 陕西秦乔农林生物科技有限公司
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