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Styrene volatilization inhibitor and unsaturated polyester containing same

A technology of inhibitor and styrene, which is applied in the field of unsaturated polyester, can solve the problems of high price and increased resin cost

Inactive Publication Date: 2013-11-27
CHANGZHOU HUARUN COMPOSITE MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The research on styrene volatilization inhibitors is mainly concentrated in European and American countries. The effect of inhibiting styrene volatilization is ideal when used in unsaturated resins, but the main disadvantage is that the price is relatively high. At present, the auxiliary agent represented by BYK-S740 The price is as high as 270 yuan / kg, and the use of this additive in the resin will greatly increase the cost of the resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0021] Weigh 1866.5g of C15 (15 carbon atoms) unit acid, put 237.0g of glycerin into a four-necked flask, the total amount of catalyst monobutyltin oxide accounts for 0.25‰ of the feed, and react at 200°C until the acid value is less than 5mgKOH / g to obtain the reaction product.

[0022] The product produced by the reaction of C15 acid and glycerin, when 1‰ is added to the unsaturated polyester resin, the volatilization of styrene after curing is 2.6%, and the proportion of styrene volatilization is 63.8%.

Embodiment 2）

[0024] Weigh 1887.0g of C17 (17 carbon atoms) unit acid, put 214.5g of glycerin into a four-necked flask, the total amount of catalyst monobutyltin oxide accounts for 0.25‰ of the feed, and react at 201°C until the acid value is less than 5mgKOH / g to obtain the reaction product.

[0025] The product produced by the reaction of C17 acid and glycerin, when 3‰ is added to the unsaturated polyester resin, the volatilization of styrene after curing is 2.2%, and the proportion of styrene volatilization is 69.4%.

Embodiment 3）

[0027] Weigh 1895.0g of C18 (18 carbon atoms) dibasic acid, put 205.0g of glycerin into a four-necked flask, the total amount of catalyst monobutyltin oxide accounts for 0.25‰ of the charging amount, and react at 205°C until the acid value is less than 5mgKOH / g, the reaction product was obtained.

[0028] The product produced by the reaction of C18 acid and glycerin, when 5‰ is added to the unsaturated polyester resin, the styrene volatilization amount after curing is 1.5%, and the styrene volatilization ratio is 79.2%.

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Abstract

The invention relates to a styrene volatilization inhibitor and unsaturated polyester containing the same. The styrene volatilization inhibitor is glyceride product generated by reacting C15-C18 acids and glycerol. According to the invention, a part of glyceride is creatively adopted as the styrene volatilization inhibitor, and the inhibition ratio achieves 60%-80% by utilizing the film-forming property of the glyceride. The unsaturated polyester resin which comprises the styrene volatilization inhibitor does not influence the secondary forming of resin, does not generate the xanthochromia and does not influence the appearance of a product after the resin is solidified.

Description

technical field [0001] The invention relates to a styrene volatilization inhibitor and an unsaturated polyester containing it. Background technique [0002] Styrene is the most widely used diluent monomer in the production process of unsaturated resin. Due to its certain toxicity, the volatilized styrene will cause great harm to the health of construction workers during the forming and curing process of FRP. At the same time, the volatilization of styrene into the air will also cause serious air pollution. [0003] Since the 1980s, foreign countries have developed some new grades of unsaturated resin products that reduce styrene volatilization. Developed countries in Europe and the United States have adopted methods such as adding styrene volatilization inhibitors such as BYK-S740 and BYK-S750 to resins to suppress styrene volatilization. volatile purpose. Since 1987, my country has only begun to systematically discuss how to reduce the volatilization of styrene from unsat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/103C08L67/06
Inventor 包柏青徐飞赵金保
Owner CHANGZHOU HUARUN COMPOSITE MATERIALS
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