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Boiling-resistant polyester resin for outdoor use and preparation method thereof

A technology of polyester resin and water boiling resistance, applied in polyester coatings, powder coatings, coatings, etc., can solve problems such as constraints and weather resistance, and achieve the effects of less by-products, good weather resistance, and complete reaction of raw materials

Active Publication Date: 2020-07-24
广东伊诗德新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the powder coating products made of epoxy in the existing technology can withstand long-term water boiling and keep the coating without blistering, falling off, loss of gloss and serious discoloration, etc., but due to the weather resistance of epoxy The use of this type of powder coating in outdoor occasions

Method used

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  • Boiling-resistant polyester resin for outdoor use and preparation method thereof
  • Boiling-resistant polyester resin for outdoor use and preparation method thereof
  • Boiling-resistant polyester resin for outdoor use and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of water-resistant outdoor polyester resin,

[0028] The formula is as follows:

[0029] 15.2Kg of neopentyl glycol, 15.2Kg of 2-ethyl-3-propyl-1,3-propanediol, 3.8Kg of trimethylolpropane, 7.4Kg of 1,4-butanediol, 44.3Kg of Purified terephthalic acid, 5.8Kg isophthalic acid, 5.1Kg 1,4-cyclohexanedicarboxylic acid, 0.1Kg monobutyltin oxide, 2Kg adipic acid, 0.1Kg curing accelerator (three phenylphosphine), 1 Kg of antioxidant (2,6-di-tert-butyl-p-cresol).

[0030] The preparation method steps are as follows:

[0031] 1) Add 15.2Kg of neopentyl glycol, 15.2Kg of 2-ethyl-3-propyl-1,3-propanediol, 3.8Kg of Trimethylolpropane, 7.4Kg of 1,4-butanediol, 44.3Kg of purified terephthalic acid, 5.8Kg of isophthalic acid, 0.1Kg of monobutyltin oxide, and the purity of 99.9% When heated to 180°C, esterified water begins to form and distill out. The distillate is a colorless transparent liquid, and then the temperature is gradually raised to 235°C, and the temperature is ...

Embodiment 2

[0036] A kind of water-resistant outdoor polyester resin,

[0037] The formula is as follows:

[0038] 15.6Kg of neopentyl glycol, 16.1Kg of 2-ethyl-3-propyl-1,3-propanediol, 8.0Kg of 1,4-butanediol, 0.7Kg of trimethylolpropane, 38.7Kg of Purified terephthalic acid, 12.6Kg of isophthalic acid, 6.0Kg of 1,4-cyclohexanedicarboxylic acid, 0.1Kg of monobutyl tin oxide, 1.3Kg of adipic acid, 0.1Kg of curing accelerator ( ethyltriphenylphosphine bromide), 0.8Kg of antioxidant.

[0039] The preparation method steps are as follows:

[0040] 1) Add 15.6Kg of neopentyl glycol, 16.1Kg of 2-ethyl-3-propyl-1,3-propanediol, 8.0Kg of 1,4-butanediol, 0.7Kg of trimethylolpropane, 38.7Kg of purified terephthalic acid, 12.6Kg of isophthalic acid, 0.1Kg of monobutyltin oxide, and the purity of 99.9% When heated to 180°C, the esterification water begins to form and distill out. The distillate is a colorless transparent liquid, and then gradually raise the temperature to 240°C, keep warm until ...

Embodiment 3

[0045] A kind of water-resistant outdoor polyester resin,

[0046] The formula is as follows:

[0047] 16Kg of neopentyl glycol, 15Kg of 2-ethyl-3-propyl-1,3-propanediol, 0.7Kg of trimethylolpropane, 8Kg of 1,4-butanediol, 42.7Kg of p-phenylene Dicarboxylic acid, 6.6Kg of isophthalic acid, 7.0Kg of 1,4-cyclohexanedicarboxylic acid, 0.1Kg of monobutyl tin oxide, 3Kg of adipic acid, 0.1Kg of curing accelerator (tetraethyl bromide ammonium chloride), 0.8 Kg of antioxidant (tris(nonylphenyl) phosphite).

[0048] The preparation method steps are as follows:

[0049] 1) Add 16Kg of neopentyl glycol, 15Kg of 2-ethyl-3-propyl-1,3-propanediol, 0.7Kg of trihydroxy Methylpropane, 8Kg of 1,4-butanediol, 42.7Kg of purified terephthalic acid, 6.6Kg of isophthalic acid, 0.1Kg of monobutyltin oxide, and nitrogen with a purity of 99.9%. When heated to 180°C, esterified water begins to form and distills out. The distillate is a colorless transparent liquid, then gradually raises the tempera...

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Abstract

The invention provides boiling-resistant polyester resin for outdoor use. The boiling-resistant polyester resin is prepared from 15-20% of neopentyl glycol, 15-20% of 2-ethyl-3-propyl-1, 3-propanediol, 7-15% of 1, 3-butanediol, 0-5% of trimethylolpropane, 35-45% of purified terephthalic acid, 2-15% of isophthalic acid, 5-10% of 1, 4-cyclohexanedicarboxylic acid, 0.02-0.15% of monobutyltin oxide, 0-5% of adipic acid, 0-1% of a curing accelerator and 0.3-1% of an antioxidant.. According to the boiling-resistant polyester resin for outdoor use, the 2-ethyl-3-propyl-1, 3-propanediol is added intothe raw materials in the formula of the polyester resin, and the hydrophobicity of the polyester resin is enhanced due to ethyl and propyl on a side chain so that the hydrolysis resistance of the polyester resin is improved. The polyol monomer and the polybasic acid monomer are matched and react together with trimethylolpropane, and the content of each component is adjusted and the feeding sequence is controlled so that the esterification reaction speed is high, byproducts are few, and the molecular weight distribution is centralized; and the obtained polyester resin has good weather resistance, boiling resistance and friction resistance.

Description

technical field [0001] The invention belongs to the field of chemical polyester resins, and in particular relates to a boiling-resistant outdoor polyester resin and a preparation method thereof. Background technique [0002] Thermosetting powder coating is a 100% solid powder that does not contain organic solvents. It is different from oily coatings and water-based coatings. It does not use solvent or water as a dispersion medium when coating, but uses air as a dispersion medium, and it is evenly coated on A new type of environmentally friendly coating that forms a special-purpose coating film on the surface of the workpiece after heating. Powder coating has the characteristics of no VOC emission, environmental protection, energy saving, high construction efficiency and wide application range. Thermosetting powder coatings are widely used in the spraying of metal substrates due to their excellent protection, corrosion resistance and decoration. For furniture and garden fac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/199C08G63/78C09D167/02C09D5/03
CPCC08G63/199C08G63/78C09D167/02C09D5/03C08K2003/2241C08K2003/3045C08G2150/20C08K13/02C08K3/22C08K3/30C08K5/34924
Inventor 雷成良卢建李松南
Owner 广东伊诗德新材料科技有限公司