Anti-yellowing unsaturated polyester resin and synthetic method thereof

A polyester resin, unsaturated technology, applied in the field of polymer chemistry, can solve the problems of loss of use function, product surface pulverization, structural damage, etc., to expand the scope of use, good yellowing resistance and weather resistance, and improve yellowing resistance The effect of changing abilities

Active Publication Date: 2016-04-13
广东百汇达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cured products of this general-purpose unsaturated resin are prone to yellowing when subjected to ultraviolet light, high temperature, oxygen, rain, etc. In severe cases, the surface of the product will be pulverized, the structure will be damaged, and the function will be lost, which limits the application of the resin within a certain range.

Method used

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  • Anti-yellowing unsaturated polyester resin and synthetic method thereof
  • Anti-yellowing unsaturated polyester resin and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] formula:

[0013] Reaction kettle formula: antioxidant 1g, adipic acid 290g, maleic anhydride 590g, neopentyl glycol 150g, ethylene glycol 190g, propylene glycol 300g, polymerization inhibitor methyl hydroquinone 0.2g;

[0014] Dilution kettle recipe: 500g styrene, 80g methyl methacrylate, 0.8g paraffin, 0.3g copper naphthenate, 2g light stabilizer.

[0015] making process:

[0016] Check and confirm whether the equipment, electrical appliances, instruments, valves and raw materials are normal, and put other reaction kettle formula raw materials into the reaction pot according to the recipe, except for the polymerization inhibitor methyl hydroquinone, and raise the temperature after feeding the materials, and the temperature of the raw materials will rise Supply nitrogen to 145°C (speed 0.5m 3 / h), horizontal condenser water supply, when the material temperature rises to 150°C, start stirring, when the distillation temperature rises to 98°C vertical condenser water su...

Embodiment 2

[0018] formula:

[0019] Reaction kettle formula: antioxidant 0.8g, adipic acid 438g, maleic anhydride 490g, neopentyl glycol 150g, ethylene glycol 190g, propylene glycol 300g, polymerization inhibitor methyl hydroquinone 0.2g;

[0020] Dilution kettle recipe: 500g styrene, 0.3g copper naphthenate, 0.8g paraffin, 80g methyl methacrylate, 2g light stabilizer.

[0021] making process:

[0022] Check and confirm whether the equipment, electrical appliances, instruments, valves and raw materials are normal, and put other reaction kettle formula raw materials into the reaction pot according to the recipe, except for the polymerization inhibitor methyl hydroquinone, and raise the temperature after feeding the materials, and the temperature of the raw materials will rise Supply nitrogen to 148°C (speed 0.5m 3 / h), horizontal condenser water supply, when the material temperature rises to 155 ° C, start stirring, when the distillation temperature rises to 100 ° C vertical condenser w...

Embodiment 3

[0024] formula:

[0025] Reaction kettle formula: antioxidant 0.8g, adipic acid 290g, maleic anhydride 590g, neopentyl glycol 150g, methyl propylene glycol 270g, propylene glycol 300g, polymerization inhibitor methyl hydroquinone 0.2g;

[0026] Dilution kettle recipe: 500g styrene, 80g methyl methacrylate, 0.2g copper naphthenate, 0.8g paraffin, 2g light stabilizer.

[0027] making process:

[0028] Check and confirm whether the equipment, electrical appliances, instruments, valves and raw materials are normal, and put other reaction kettle formula raw materials into the reaction pot according to the recipe, except for the polymerization inhibitor methyl hydroquinone, and raise the temperature after feeding the materials, and the temperature of the raw materials will rise Supply nitrogen to 146°C (speed 0.5m 3 / h), horizontal condenser water supply, when the material temperature rises to 153 ° C, start stirring, when the distillation temperature rises to 99 ° C vertical cond...

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Abstract

The invention provides anti-yellowing unsaturated polyester resin, comprising the following components in percentage by weight: 13-20% of adipic acid, 23-28% of maleic anhydride, 30-33% of dihydric alcohol, 0.04-0.05% of an antioxidant, 0.01% of an inhibitor, 23-24% of styrene, 4% of metacrylic acid methyl ester, 0.04% of paraffin, 0.01% of copper naphthenate and 0.1% of a light stabilizer, wherein the dihydric alcohol is a mixture of neopentyl glycol, glycol and propylene glycol, or a mixture of neopentyl glycol, methyl propylene glycol and propylene glycol. The unsaturated polyester resin provided by the invention has very good yellowing resistance and weather resistance.

Description

technical field [0001] The invention belongs to the field of polymer chemistry, and in particular relates to an unsaturated polyester resin, in particular to a yellowing-resistant unsaturated polyester resin and a synthesis method thereof. Background technique [0002] Unsaturated polyester resins are generally obtained by polycondensation of dibasic acids or acid anhydrides and dibasic alcohols, and then dissolved in crosslinking monomers to form thermosetting resins that can be cured at room temperature. Commonly used dibasic acids include maleic anhydride, fumaric acid, phthalic anhydride, isophthalic acid, and terephthalic acid. Commonly used dibasic alcohols include propylene glycol, ethylene glycol, diethylene glycol, etc. , The cross-linking monomer generally adopts styrene. However, the cured products of this general-purpose unsaturated resin are prone to yellowing when subjected to ultraviolet light, high temperature, oxygen, rain, etc. In severe cases, the surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/52C08G63/16C08G63/78
CPCC08G63/16C08G63/52C08G63/78
Inventor 徐贵红卫福海李金凤高渐华
Owner 广东百汇达新材料有限公司
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