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Tertiary carbonic acid compound modified waterborne acrylic acid-epoxy ester resin and preparation method thereof

A water-based acrylic and epoxy ester resin technology, applied in the polymer field, can solve the problems of reduced weather resistance of the coating system, achieve the effects of improving weather resistance and hydrolysis resistance, improving anti-corrosion performance, and overcoming poor anti-corrosion performance

Active Publication Date: 2020-12-04
CHINA NAT OFFSHORE OIL CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of tertiary carbonic acid compound modified waterborne acrylic acid-epoxy ester resin and preparation method thereof, to solve the problem that the weather resistance of the coating system after adopting the waterborne paint modified by epoxy ester is obviously reduced

Method used

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  • Tertiary carbonic acid compound modified waterborne acrylic acid-epoxy ester resin and preparation method thereof
  • Tertiary carbonic acid compound modified waterborne acrylic acid-epoxy ester resin and preparation method thereof
  • Tertiary carbonic acid compound modified waterborne acrylic acid-epoxy ester resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Preparation of epoxy ester-glycidyl tertiary carbonate adduct (EV-1)

[0045] (1) Add 278 grams (1mol) of linoleic acid and 950 grams (1mol) of epoxy resin NPES-901 in a four-necked flask equipped with a stirrer, a thermometer, a dry nitrogen conduit and a reflux condenser, add 12.5 grams of 2 , 6-di-tert-butyl-p-cresol, under the protection of nitrogen, raise the temperature to 140-150°C under stirring conditions for ring-opening reaction, and keep warm at 140-150°C for 5-8 hours to obtain epoxy ester adducts (EA-1), spare.

[0046] (2) Add 134 grams (1mol) of trimethylolpropane in a four-necked flask equipped with stirrer, thermometer, dry nitrogen conduit and reflux condenser, add 504 grams (3mol) of methylhexahydrophthalic anhydride to open the ring , react at 120~150°C for 3~5 hours, complete the anhydride ring-opening reaction, subsequently, add the epoxy ester adduct (EA-1) prepared in the step (1) of 1240.5 grams (1mol), raise the temperature React at 160-210°...

Embodiment 2

[0048] Preparation of epoxy ester-glycidyl tertiary carbonate adduct (EV-2)

[0049] (1) Add 278 grams (1mol) of linoleic acid and 430 grams (1mol) of epoxy resin NPES-128S in a four-necked flask equipped with a stirrer, a thermometer, a dry nitrogen conduit and a reflux condenser, add 7 grams of 2 , 6-di-tert-butyl-p-cresol, under the protection of nitrogen, raise the temperature to 140-150°C under stirring conditions for ring-opening reaction, and keep warm at 140-150°C for 5-8 hours to obtain epoxy ester ester addition material (EA-2), spare.

[0050] (2) add the trimethylolpropane of 134 grams (1mol) in the four-necked flask that agitator, thermometer, dry nitrogen conduit and reflux condenser are housed, add the succinic anhydride ring-opening of 300 grams (3mol), in React at 120-150°C for 3-5 hours to complete the anhydride ring-opening reaction, then add 715 grams (1mol) of the epoxy ester adduct (EA-2) prepared in step (1), and raise the temperature to 160 React at ~...

Embodiment 3

[0056] Tertiary Carbonic Acid Compound Modified Waterborne Acrylic-Epoxy Resin (EV-PA-1)

[0057] According to the formula in Table 1, in the four-necked flask equipped with agitator, thermometer, dry nitrogen conduit and reflux condenser, add 30 grams of epoxy ester-glycidyl tertiary carbonate adduct (EV-1) and 20 gram of ethylene glycol butyl ether acetate as the reaction base material, stir and heat up to 140-145°C, add the mixed monomer component A dropwise at this temperature, and finish the dropwise addition within 3-4 hours at 140-145°C; then Continue to add the mixed monomer component B dropwise at 140-145°C, and finish the drop within 2-3 hours; after the addition, keep it warm at 140-145°C for 1-2 hours to obtain tertiary carbonic acid compound modified water-based acrylic acid- Epoxy ester resin, recorded as EV-PA-1.

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Abstract

The invention relates to the technical field of polymers, in particular to a tertiary carbonate compound modified waterborne acrylic-epoxy ester resin and a preparation method thereof. The preparationmethod comprises preparation of an epoxy ester-glycidyl tertiary carbonate adduct and the tertiary carbonate compound modified waterborne acrylic-epoxy ester resin, and specifically comprises the following steps: firstly, preparing the epoxy ester-tertiary glycidyl carbonate adduct (EV) by using glycidyl tertiary carboxylate, epoxy resin, trimethylolpropane and anhydride compounds, and dropwise adding acrylic monomers on the basis for radical polymerization to prepare the tertiary carbonate compound modified waterborne acrylic-epoxy ester resin. The waterborne acrylic-epoxy ester resin prepared in the application has a low solvent content, and by introducing an epoxy ester structure and a tertiary carbonate structure in the waterborne resin, the anticorrosion performance and weather resistance of a coating are improved simultaneously, and the tertiary carbonate compound modified waterborne acrylic-epoxy ester resin can be used for preparing a primer-topcoat two-component waterborne polyurethane coating.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a water-based acrylic-epoxy resin. Background technique [0002] In the field of industrial painting, the coating is usually a multi-coat system, and different coatings have different functions. For example, the common "primer + topcoat" coating system, the primer provides excellent anti-corrosion performance of the coating, and the topcoat provides excellent weather resistance and good appearance of the coating. If the two coatings can be combined to prepare a "bottom-surface-in-one" coating, the coating process can be greatly reduced, the production efficiency can be improved, and the final cost of coating can be saved. Due to its excellent appearance, good weather resistance and solvent resistance, two-component waterborne polyurethane is usually used as a topcoat in the field of industrial protection. [0003] At present, the more common preparation method of two-component...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/06C08F220/18C08F220/20C08F8/00C09D175/04C09D5/08
CPCC08F8/00C08F220/14C08F220/20C09D5/08C09D175/04C08F220/06C08F220/1804C08F220/1808
Inventor 许飞张汉青庄振宇祝宝英胡中周丽刘明王艳艳刘汉功陈卫东朱柯丁帮勇杨光华
Owner CHINA NAT OFFSHORE OIL CORP