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Photosensitive resin of amine-modified polyester acrylate and synthesis method thereof

A polyester acrylate, photosensitive resin technology, applied in polyester coatings, coatings, etc., can solve the problems of low viscosity, high solid shrinkage, poor gloss and wear resistance, etc.

Active Publication Date: 2021-05-11
安庆北化大科技园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its molecular weight is low and its viscosity is small, so the light curing speed is affected, and the surface oxygen inhibition is more obvious, so the solid shrinkage rate is large, and the adhesion, gloss and wear resistance are poor.

Method used

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  • Photosensitive resin of amine-modified polyester acrylate and synthesis method thereof
  • Photosensitive resin of amine-modified polyester acrylate and synthesis method thereof
  • Photosensitive resin of amine-modified polyester acrylate and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) take by weighing 29.4g (0.3mol) maleic anhydride and toluene 6.09g of reactant gross mass 10wt% in the there-necked flask of 250mL, oil bath, be heated to 60 ℃ and maleic anhydride is completely dissolved in toluene, in Under the protection of nitrogen, add 29.7g (0.33mol) of 1,4-butanediol, 1.8g (0.03mol) of ethylenediamine and 0.5wt% of the total mass of reactants as a catalyst, 0.3045g of dibutyltin dilaurate, and react at 180°C 4h, when the acid value in the system is stable, the device is added into the water separator to divide the water to increase the reaction degree. When the water separator has no reflux, add toluene as 5wt% of the total mass of the reactants to be 3.045g. When the acid value is less than or equal to 5mgKOH / g, when the amount of xylene distilled out in vacuum is consistent with the amount added, the reaction stops and a hydroxyl-terminated polyester is obtained.

[0038] (2) Weigh 8.64g (0.12mol) of acrylic acid, 0.2592g of monomer mass 3...

Embodiment 2

[0043] (1) Weigh 29.6g (0.2mol) of phthalic anhydride and 5.12g of xylene with a total mass of reactants of 10wt% in a 100mL three-necked flask, heat it to 130°C in an oil bath to completely dissolve phthalic anhydride In xylene, under the protection of nitrogen, add 18g (0.2mol) of 1,4-butanediol, 2.4g (0.4mol) of ethylenediamine and 0.5wt% catalyst dibutyltin dilaurate of the total mass of reactants 0.256g , reacted at 180°C for 6h, when the acid value in the system was stable, the device added a water separator to divide water to increase the reaction degree, when the water separator had no reflux, add xylene as 5wt% of the total mass of the reactants to be 2.56g , when the acid value is less than or equal to 5mg KOH / g, when the amount of xylene distilled out in vacuum is consistent with the added amount, the reaction is stopped to obtain a hydroxyl-terminated polyester.

[0044] (2) Take by weighing 5.76g (0.08mol) acrylic acid, monomer quality 3wt% p-toluenesulfonic acid ...

Embodiment 3

[0049] (1) Weigh 29.4g (0.3mol) of maleic anhydride and 6.09g of cyclohexane with a total reactant mass of 10wt% in a 250mL three-necked flask, heat it to 60°C in an oil bath to completely dissolve maleic anhydride in cyclohexane In alkanes, under the protection of nitrogen, add 29.7g (0.33mol) of 1,4-butanediol, 1.8g (0.03mol) of ethylenediamine, and 0.3wt% of the total mass of reactants. Catalyst phosphoric acid 0.1827g, react at 160 ° C 6h, when the acid value in the system is stable, the device is added into a water separator to divide water, so that the reaction degree is improved. When the water separator has no reflux, add cyclohexane as 5wt% of the total mass of the reactant to be 3.045g, when the acid value When ≤5mgKOH / g, when the amount of cyclohexane distilled out in vacuum is consistent with the added amount, the reaction stops and a hydroxyl-terminated polyester is obtained.

[0050] (2) Weigh 8.64g (0.12mol) of acrylic acid, 0.432g of monomer mass 5wt% butyl tit...

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Abstract

The invention discloses a photosensitive resin of amine-modified polyester acrylate, which is characterized in that the structural formula of the photosensitive resin is as follows: wherein, R 1 is one of; R 2 is one of; R 3 is one of; R 4 for H, CH 3 kind of. The invention also discloses a method for synthesizing the photosensitive resin of amine-modified polyester acrylate. The invention has the advantages of reducing the influence of oxygen inhibition, increasing the curing rate of polyester acrylate, and improving its adhesion, gloss, abrasion resistance and hardness.

Description

technical field [0001] The invention relates to the technical field of preparation of functional polyacrylic acid, in particular to a photosensitive resin of amine-modified polyester acrylate and a synthesis method thereof. Background technique [0002] Photocuring technology is an efficient, environmentally friendly, energy-saving, high-quality material surface treatment technology, known as a new technology for the green industry in the 21st century. Photocuring technology is summarized as having "5E" characteristics: Efficient, Enabling, Economical, Energy Saving, and Environmental Friendly. Photocurable coatings are the earliest examples of large-scale successful application of photocurable technology in industry, and are currently the products with the largest production and sales in the field of photocurable industry. light-curing coatings. [0003] Polyester acrylate prepolymers are obtained by reacting acrylic acid with polyols or polyesters. The biggest feature o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/91C09D167/06
CPCC08G63/918C09D167/06
Inventor 聂俊许延卿朱晓群刘瑶
Owner 安庆北化大科技园有限公司
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