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A kind of preparation method of saturated urushiol-based functional coating

A technology of functional coatings and urushiol, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of high allergenicity and low transparency, and achieve high transparency, convenient construction, and good dryness

Active Publication Date: 2020-11-03
中华全国供销合作总社西安生漆涂料研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the deficiencies and defects of the above-mentioned prior art, the purpose of the present invention is to provide a preparation method of saturated urushiol-based functional coatings, which solves the technical problems of low transparency and high allergenicity in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a kind of preparation method of saturated urushiol-based functional coating, this method is raw material with saturated urushiol, and raw material is dissolved in the solvent, is catalyst with tetramethylguanidine, adds cross-linking agent to catalyze cross-linking reaction, then A capping agent is added to carry out a capping reaction, and the saturated urushiol is modified to obtain a saturated urushiol-based functional coating.

[0032] In terms of equivalents: saturated urushiol: 1eq; solvent: 5eq; catalyst: 0.02eq; crosslinking agent: 1.2eq; end-capping agent: 0.5eq.

[0033] in:

[0034] The crosslinking agent is isophorone diisocyanate.

[0035] The blocking agent is ε-caprolactam.

[0036] The solvent is tetrahydrofuran.

[0037] The specific process of crosslinking reaction is: dissolve saturated urushiol with solvent, stir at room temperature; add catalyst, continue to stir at room temperature, and then add crosslinking agent dropwi...

Embodiment 2

[0048] This embodiment provides a kind of preparation method of saturated urushiol-based functional coating, this method uses saturated urushiol as raw material, and raw material is dissolved in the solvent, uses 1,8-diazabicycloundec-7-ene as A catalyst, adding a cross-linking agent to catalyze the cross-linking reaction, then adding an end-capping agent to carry out the end-capping reaction, and modifying the saturated urushiol matrix to obtain a saturated urushiol-based functional coating.

[0049] In terms of equivalents: saturated urushiol: 1eq; solvent: 3eq; catalyst: 0.01eq; crosslinking agent: 1.2eq; end-capping agent: 0.5eq.

[0050] in:

[0051] The crosslinking agent is 2,4-toluene diisocyanate.

[0052] The blocking agent is acetamide.

[0053] The solvent is turpentine.

[0054] The specific process of the crosslinking reaction in this embodiment is the same as that in Embodiment 1.

[0055] The specific process of the end-capping reaction in the present embod...

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Abstract

The invention provides a preparation method of saturated urushiol-based functional coating, which includes: dissolving saturated urushiol in a solvent, using tetramethyl guanidine or 1,8-diazabicycloundec-7-ene as a catalyst, adding a crosslinker to catalyze crosslinking reaction, adding a capping agent to allow capping reaction, and subjecting the saturated urushiol to matrix modification to obtain the saturated urushiol-based functional coating. With saturated urushiol used as a raw material, tetramethyl guanidine, 1,8-diazabicycloundec-7-ene or 4-methylmorpholine as a catalyst, isophorone diisocyanate or toluene 2,4-diisocyanate as a crosslinker, and acetamide or epsilon-caprolactam as a capping agent, the saturated urushiol-based functional coating is synthesized. The saturated urushiol-based functional coating is free of allergy of raw lacquer and good in dryness and has good construction convenience.

Description

technical field [0001] The invention belongs to the field of saturated urushiol modification, and in particular relates to a preparation method of saturated urushiol-based functional paint. Background technique [0002] Raw lacquer is a specialty resource in my country, and is known as the "King of Paint" because of its unique and excellent performance. However, the film-forming conditions of raw lacquer are relatively harsh, and it must be dried at a certain temperature and humidity to form a film. The anti-ultraviolet absorption performance of the paint film is not good, and it is easy to age and crack outdoors; Sensitivity and other disadvantages have affected the industrial development of raw lacquer. For this reason, it is imminent to modify the raw lacquer to meet the requirements of the market. [0003] At present, urushiol is usually used as a substrate at home and abroad, and the synthesized paint has a darker color, which is difficult to meet the requirements of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04
CPCC09D175/04
Inventor 吕虎强李东旭
Owner 中华全国供销合作总社西安生漆涂料研究所
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