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New use of plant polyphenol compound

A technology of plant polyphenols and compounds, applied in the directions of adhesive additives, non-polymer adhesive additives, coatings, etc., can solve the problems of new pollution, affect the performance of coatings, and high costs, achieve good application prospects, and protect physical and mental health. , the effect of high environmental significance

Inactive Publication Date: 2004-01-21
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The purpose of the present invention is to solve the problems that the existing volatile organic compound capture products have high cost, affect coating performance, cannot effectively contain VOC, and generate new pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] 1) The preparation technology of plant polyphenol compound:

[0036] The extraction methods of plant polyphenolic compounds from different raw materials are basically the same, mainly including solvent extraction, enrichment to obtain crude products, and then purification by precipitation or chromatography to obtain basically colorless amorphous powders, some of which can form colorless crystals.

[0037] ① The plant material is pulverized and sieved by a plant pulverizer to make a powder. Use 45-80% (v / v) methanol or acetone aqueous solution that is 3 to 6 times the volume of plant powder as the extraction solution, extract in a water bath for 20 minutes, filter the solution, and then add 2 to 3 times 45-80% (v / v) v) Extract with methanol or acetone aqueous solution for 20 minutes, and combine the filtrates; distill off the organic solvent under reduced pressure to obtain a concentrated solution; extract the concentrated solution with double the amount of chloroform o...

Embodiment 1

[0043] Embodiment 1 (additional type)

[0044] Ingredient parts by mass

[0045] Plant Polyphenols 7

[0046] DG 0.5

[0047] Tween60 or Tween80 0.1~0.2

[0048] Polyvinyl alcohol 0.1

[0049] This embodiment is suitable for use in coatings that do not contain polyvinyl alcohol as a VOC capture agent. The catching agent is added as a filler before the paint is used, and it is mixed with the paint and then painted.

[0050] After use, detect the coatings and adhesives added with this scavenger, wherein the content of free formaldehyde is less than 0.5%, the content of free isocyanate is 0.1%, and the total volatile organic compounds in solvent-based and water-based coatings and adhesives The content is lower than 200g / L. The test results are lower than or meet the requirements of the national standard. The gas in the volatilization space of the paint and adhesive was tested after use, and the content of free formaldehyde was 0.06mg / m 3 , free isocyanate is not detected,...

Embodiment 2

[0051] Embodiment two (preparation type)

[0052] Ingredient parts by mass

[0053] Plant Polyphenols 9

[0054] water 87

[0055] MG0.7

[0056] Tween60 or Tween80 0.3

[0057] This embodiment is suitable for phenolic resin adhesives. After the adhesive is used, spray this capture agent on the part where the adhesive is used, the surrounding air and the medium that may absorb VOC, and ventilate after 6 hours of closed use to achieve the capture effect. In an ordinary living room with a space of 15 square meters, when the amount of binder used is 0.5 kg, 100 grams of this catching agent is sprayed in mist form, and the gas in its volatilization space is detected after 6 hours, and the content of free formaldehyde 0.07mg / m 3 , free isocyanate is not detected, and the concentration of total volatile organic compounds (TVOC) is less than 0.3mg / m 3 , are lower than or meet the requirements of the national standard. The national standard limits the trace amount of free form...

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PUM

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Abstract

The present invention is the new use of plant polyphenol compound and belongs to the field of daily environment protecting material. Based on its unique chemical activity and physiological activity, the present invention proposes that plant polyphenol compound is used as volatile organic matter trapping agent and in preparing indoor harmful gas adsorbent. When it is used as material of paint and adhesive, plant polyphenol compound will not produce negative effect on the performance of paint and adhesive while producing certain synergistic effect. Plant polyphenol compound is non-toxic and has no toxic side effect and significant environment protecting effect. As one rich but un-exploited natural resource, plant polyphenol compound has wide application foreground.

Description

technical field [0001] The invention relates to the application of plant polyphenol compounds as volatile organic matter capture agents and indoor harmful gases and other adsorbents, belonging to the field of daily-use environmental protection materials. Background technique [0002] Plant polyphenolic compounds widely exist in various plants in nature, and their content is second only to cellulose and hemicellulose, and they are actually distributed in all parts of plants: epidermis, xylem, roots, flowers, leaves and fruits. The total number of plant polyphenolic compounds is more than thousands, including tannin, lignin, flavonoids, etc., so it is a kind of substance with complex structure. According to the chemical structure characteristics, plant polyphenols can be divided into C6·C1, C6·C2, C6·C3, C6·C2·C6, C6·C3·C6 and so on. C6 represents an aromatic ring, C2 and C3 respectively represent aliphatic two-carbon and three-carbon chains, and their molecular weights are d...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09J11/06
Inventor 何国荣王晓琳王锐温富
Owner TSINGHUA UNIV
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