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Freon-resistant resin composition and preparation process and use thereof

A resin composition and Freon-resistant technology, applied in the direction of epoxy resin coatings, coatings, etc., can solve the problems of polyimide resin paint usage restrictions, complex application production process, expensive paint cost, etc., to ensure Freon-resistant Performance, good stability, low price effect

Inactive Publication Date: 2005-12-07
广州擎天油漆化工实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these paints need to use strong polar solvents, such as: NN-dimethylformamide, NN-dimethylacetamide, dioxane, etc.; the curing temperature is high and the time is long; the application and production process is complicated and harsh
In addition, the cost of paint is expensive
Due to the use of strong polar solvents, most of these solvents are more toxic than ordinary solvents, so they cause more damage to the environment
Due to the above-mentioned reasons, polyamide-imide resin paint; the use of polyimide resin paint has been limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1: functionality is 18% of polymaleimide of 2.5-4.5; Bisphenol A epoxy resin 8%; Epoxy resin of ester ring group 6%; Tung oil anhydride 20%; F-20 solvent 46%, Peroxide initiator 2%.

[0041] Add tung oil anhydride into a stainless steel oil bath heating reactor with a stirrer, start heating, stir, when the temperature of the reactor rises to 50°C, add polymaleimide, and at the same time make the temperature of the reactor rise to 160°C, continue stirring, constant temperature reaction for 2 hours, then stop heating, continue stirring, and feed cold oil to lower the temperature of the reactor to 60°C, add F-20 solvent, continue stirring, when the materials in the reactor are mixed evenly, Add cycloester epoxy resin, bisphenol A epoxy resin, and add peroxide initiator at the same time, after fully mixing evenly, stop stirring, filter to become dark brown transparent liquid Freon-resistant resin composition, and finally pack it.

Embodiment 2

[0042] Example 2: Bismaleimide 10%, functionality 2.5-4 novolak epoxy resin 20%, bisphenol A epoxy resin 10%, linoleic anhydride 35%, F-20 solvent 24%, peroxide Initiator 1%.

[0043] Add linoleic anhydride into a stainless steel oil bath heating reactor with a stirrer, start heating, stir, when the temperature of the reactor rises to 50°C, add bismaleimide, and at the same time make the temperature of the reactor rise within 0.5 hours To 90°C, continue to stir, keep constant temperature for 5 hours, then stop heating, continue to stir, and feed cold oil to lower the temperature of the reactor to 60°C, add F-20 solvent, continue to stir, when the materials in the reactor are mixed evenly , add novolac epoxy resin, bisphenol A epoxy resin, and add peroxide initiator at the same time, after fully mixing evenly, stop stirring, filter to become light yellow transparent liquid Freon-resistant resin composition, and finally pack it.

Embodiment 3

[0044] Embodiment 3: polymaleimide 30% of functionality 2.5-4.5; Linear epoxy resin 14%; Novolac epoxy resin 6%; Tung oil anhydride 30%; Epoxy reactive diluent 18.5%; Peroxide Initiator 1.5%.

[0045] Add tung oil anhydride into a stainless steel oil bath heating reactor with a stirrer, start heating, stir, when the temperature of the reactor rises to 50°C, add polymaleimide, and at the same time make the temperature of the reactor rise to 140°C, continue stirring, constant temperature reaction for 4 hours, then stop heating, continue stirring, and feed cold oil to lower the temperature of the reactor to 70°C, add F-20 solvent, continue stirring, when the materials in the reactor are mixed evenly, Adding novolak epoxy resin, linear epoxy resin and peroxide initiator at the same time, after fully mixing evenly, stopping stirring, filtering to become light yellow transparent liquid Freon-resistant resin composition, and finally packing.

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PUM

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Abstract

The present invention discloses a freon-resisting resin composition. It includes (wt%) 5%-30% of multifunctional epoxy resin, 5%-35% of linear epoxy resin, 5%-50% of polyimide, 0%-40% of active diluting agent, 0%-70% of solvent, 5%-50% of liquid anhydride and 0.1%-2% of peroxide initiator. Said invention also discloses its preparation method and its application in industry. Its preparation method is simple and application range is extensive.

Description

technical field [0001] The invention relates to a resin composition, in particular to a Freon-resistant resin composition. The present invention also relates to the preparation method and application of the above resin composition. Background technique [0002] For a long time, most Freon-resistant insulating resin compositions use polyamide-imide resin varnish; polyimide resin varnish. These resin paints have the characteristics of high heat resistance and good Freon resistance. However, these paints need to use strong polar solvents, such as: NN-dimethylformamide, NN-dimethylacetamide, dioxane, etc.; the curing temperature is high and the time is long; the application and production process is complicated and harsh. In addition, the cost of paint is expensive. Due to the use of strong polar solvents, most of these solvents are more toxic than ordinary solvents, and therefore cause greater damage to the environment. Due to the above-mentioned multiple reasons, the polya...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00
Inventor 刘新华肖思煜招德辉
Owner 广州擎天油漆化工实业有限公司