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Water-soluble organic silicone modified polyester resin as well as preparation method and application thereof

A technology for modifying polyester and organosilicon, which is applied in the direction of polyester coatings and coatings, which can solve the problems of adverse effects on environmental construction personnel and achieve the effects of simple and easy preparation process, reduced cost and reduced damage

Active Publication Date: 2016-04-13
HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resin is solvent-based, which has a great adverse effect on the environment and construction personnel

Method used

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  • Water-soluble organic silicone modified polyester resin as well as preparation method and application thereof
  • Water-soluble organic silicone modified polyester resin as well as preparation method and application thereof
  • Water-soluble organic silicone modified polyester resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: Preparation of water-soluble silicone modified polyester resin

[0031] Put 16 parts of neopentyl glycol, 4 parts of trimethylolpropane, 9 parts of adipic acid, and 5 parts of phthalic anhydride into a reaction kettle with a water separator and stirring, start stirring after melting, and continue to heat up to 160°C. After 6 hours of esterification at heat preservation, continue to raise the temperature to 260°C, keep the xylene at reflux during the reaction process, take out the generated water in time, and react until the acid value is below 10mgKOH / g. Cool down to 190°C, add 14 parts of solvent propylene glycol methyl ether acetate and 5 parts of trimellitic anhydride, react until the acid value is 80 mgKOH / g, then cool down to 130°C, add 0.00038 parts of aluminum acetylacetonate and 16 parts of Corning's 3037, react for 2 hours until transparent , lower the temperature to 90°C, add 6 parts of AMP-95, and neutralize for 30 minutes. Finally, 24 parts of...

Embodiment 2

[0034] Embodiment 2: Preparation of water-soluble organosilicon-modified polyester resin

[0035] Put 15 parts of 1,5-pentanediol, 10 parts of trimethylolpropane, 11 parts of adipic acid, and 9 parts of isophthalic acid into a reaction kettle with a water separator and stirring, and start stirring after melting. Continue to raise the temperature to 200°C, keep warm for 2 hours after esterification, then continue to raise the temperature to 240°C, keep the xylene under reflux during the reaction, take out the generated water in time, and react until the acid value is below 10mgKOH / g. Cool down to 160°C, add 11 parts of solvent ethylene glycol butyl ether and 8 parts of trimellitic anhydride, react until the acid value is 60mgKOH / g, then cool down to 100°C, add 0.0002 parts of aluminum acetylacetonate, 0.0002 parts of aluminum metachlorate and 12 parts of Shin-Etsu KR-510, react for 1h until transparent, cool down to 95°C, add 4 parts of AMP-95, and neutralize for 30min. Finall...

Embodiment 3

[0038] Embodiment 3: Preparation of water-soluble silicone modified polyester resin

[0039]Put 10 parts of 1,4-cyclohexanedimethanol, 5 parts of trimethylolethane, 3 parts of pimelic acid, and 9 parts of 1,4-cyclohexanedicarboxylic acid into the reaction with water separator and stirring In the kettle, start stirring after melting, continue to heat up to 170°C, keep warm for esterification for 4 hours, continue to heat up to 200°C, keep the xylene in reflux during the reaction, take out the generated water in time, and react until the acid value is 10mgKOH / Below g is enough. Lower the temperature to 170°C, add 15 parts of solvent propylene glycol methyl ether and 7 parts of pyromellitic anhydride, and react until the acid value is 90 mgKOH / g. Cool down to 100°C, add 0.0002 parts of sodium metaaluminate and 16 parts of Wacker IC678, react for 2 hours until transparent, then cool down to 85°C, add 7 parts of YT-99, and neutralize for 30 minutes. Finally, add water to dilute ...

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Abstract

The invention relates to the field of organic polymer compounds and provides water-soluble organic silicone modified polyester resin and a preparation method thereof to solve the technical problems that almost all the organic silicone modified polyester coatings on the market at present are solvent-based coatings and solvents contained in the coatings have great impacts on the environment and constructors. The water-soluble carboxylate organic silicone modified polyester resin is obtained by adopting polyols and binary acids to prepare hydroxyl-terminated polyester resin, then blocking the polyester resin with a monomer containing a carboxyl functional group, modifying the polyester resin with organic silicone intermediates containing silicone hydroxyl, silicone methoxyl or silicone ethoxyl and neutralizing the polyester resin with an amine to form salt after modification is completed. The organic silicone modified polyester resin prepared by the method can be uniformly dissolved in water. Films prepared from water-based coatings containing the resin have excellent heat, water and solvent resistance.

Description

technical field [0001] The invention relates to the field of organic polymer compounds, in particular to a water-soluble organosilicon-modified polyester resin, a preparation method thereof, and a coating containing the resin. Background technique [0002] Silicone modified polyester resin combines the advantages of silicone resin and polyester resin. It has the characteristics of high temperature resistance, weather resistance, yellowing resistance and good adhesion, and is widely used in the coating industry. At present, almost all silicone-modified polyester coatings on the market are solvent-based coatings, and the solvents contained in them have a great impact on the environment and construction personnel. With the improvement of environmental protection requirements, solvent-based coatings will gradually be replaced by water-based coatings. The preparation of water-soluble organosilicon-modified polyester resin is the key technology for water-based organosilicon-modif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/695C08G63/78C09D167/02
Inventor 钱涛邓庆芝刘海龙刘海兵
Owner HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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