Preparation method of non-styrene unsaturated polyester resin

A polyester resin, styrene-type technology, applied in the field of organic polymer compounds, can solve the problems of poor cured product performance, high resin viscosity, and many bubbles in the system, and achieve excellent room temperature curing performance, less bubbles, and low viscosity. Effect

Active Publication Date: 2020-04-14
CHANGZHOU HUARI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared styrene-free flexible unsaturated polyester has high resin viscosity and poor manufacturability, which is very limited in practical application
During the research and development process, the experimenters found that the mixture of non-styrene monomer and unsaturated polyester resulted in high viscosity and poor manufacturability. During curing, the gel time would be too long, the system would have many bubbles, and the cured product Poor performance and other issues

Method used

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  • Preparation method of non-styrene unsaturated polyester resin
  • Preparation method of non-styrene unsaturated polyester resin
  • Preparation method of non-styrene unsaturated polyester resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of the non-styrene type unsaturated polyester resin of the present embodiment is to drop into ethylene glycol 53.24g, diethylene glycol 546.50g, propylene glycol 70.00g, trimethylol propane diallyl Ether 122.00g, phthalic anhydride 336.00g, maleic anhydride 445.00g, methyl hydroquinone 0.16g, react at a reaction temperature of 205°C until the solid acid value is 31.0-36.0mgKOH / g, and the obtained Saturated polyester polymer. Then add 967.20 g of cross-linking monomer hydroxypropyl methacrylate when the temperature does not exceed 80° C. After dilution, cool down to 40° C. and add 2.42 g of oxalic acid.

Embodiment 2

[0025] The preparation method of the non-styrene type unsaturated polyester resin of the present embodiment is to drop into a four-necked flask 689.00g of diethylene glycol, 115.56g of trimethylolpropane diallyl ether, 336g of tetrahydrophthalic anhydride, cis 445.0 g of butenedioic anhydride and 0.476 g of methyl hydroquinone are reacted at a reaction temperature of 180°C until the solid acid value is 18.0-23.0 mgKOH / g to obtain an unsaturated polyester polymer. Then add 292.80g of cross-linking monomer hydroxyethyl methacrylate and 683.24g of cross-linking monomer diethylene glycol dimethacrylate when the temperature does not exceed 80°C, cool down to 40°C after dilution and add 2.44g of acetic acid.

Embodiment 3

[0027] The preparation method of the non-styrene-type unsaturated polyester resin of this embodiment is to put 689.00 g of diethylene glycol and 539.5 g of methyltetrahydrophthalic anhydride into a four-necked flask, and heat up to 205 ° C to react until the solid acid value is 5.0 ~10.0 mgKOH / g, then lower the temperature to below 120°C and put in 83.46g of trimethylolpropane diallyl ether, 318.50g of maleic anhydride, and 0.476g of methyl hydroquinone, and react at a reaction temperature of 160°C. React until the solid acid value is 23.0-28.0 mgKOH / g to obtain an unsaturated polyester polymer. Then add 302.6g of cross-linking monomer hydroxypropyl methacrylate and 705.4g of cross-linking monomer diethylene glycol dimethacrylate when the temperature does not exceed 80°C, cool down to 40°C after dilution and add 5.04g of Monomethyl succinate.

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Abstract

The invention relates to a preparation method of non-styrene unsaturated polyester resin. The method comprises the following steps: carrying out condensation reaction on dihydric alcohol, a monohydroxy allyl ether monomer, saturated binary acid or anhydride and unsaturated binary acid or anhydride to obtain an unsaturated polyester polymer; then adding a non-styrene crosslinking monomer and a defoaming additive into the unsaturated polyester polymer to obtain non-styrene unsaturated polyester resin; wherein the crosslinking monomer is one or more of acrylic acid-containing monoester, methacrylic acid-containing monoester, acrylic acid-containing diester and methacrylic acid-containing diester; wherein the defoaming additive is an organic matter containing carboxyl, the molecular weight ofthe defoaming additive is 46-350, and the acid value of the defoaming additive is 160.0 mgKOH / g-1246.0 mgKOH / g. The non-styrene unsaturated polyester resin disclosed by the invention can be cured at normal temperature, basically has no bubbles after being cured, and has excellent cured product performance.

Description

technical field [0001] The invention relates to a preparation method of a room-temperature-cured non-styrene-type unsaturated polyester resin and a cured product formed by the resin, belonging to the technical field of organic polymer compounds. Background technique [0002] Unsaturated polyester resin is polycondensed from diols, saturated dibasic acids or anhydrides, unsaturated dibasic acids or anhydrides, and its molecular structure contains non-aromatic unsaturated bonds, usually composed of cross-linked monomer styrene It is diluted and cross-linked by an appropriate initiator to become a thermosetting plastic. Unsaturated polyester resin combined with glass fiber can be made into various FRP products, and can also be mixed with various fillers and cast into artificial marble products. Some of them can also be used in insulating varnishes and coating resins for wood shells of furniture and musical instruments. [0003] Because unsaturated polyester resin contains vola...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F222/14C08G63/52
CPCC08F283/01C08G63/52
Inventor 王合情古园诚伏艳曹星谈益新宦胜民
Owner CHANGZHOU HUARI NEW MATERIAL
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