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Halogen-free epoxy resin and process for preparing same

A technology of epoxy resin and phenolic epoxy resin, which is applied in the field of epoxy resin, can solve the problems of personal health hazards, short service life of electrical appliances, easy dissociation of bromine elements, etc., and achieve the effect of reducing production costs and prolonging service life

Inactive Publication Date: 2007-10-17
WUXI ACRYL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the use of a large amount of bromine-containing epoxy resin in the production process of the above-mentioned flame-retardant copper-clad laminate, when the electronic and electrical products made of this copper-clad laminate encounter abnormal conditions and burn or are discarded for combustion, the bromine in it The element (halogen element) and its synergistic compound antimony trioxide will produce toxic gas dioxin and hydrogen halide, which will be harmful to human health
In the manufacturing process of copper clad laminates, antimony trioxide will destroy the electroplating bath used for the production of printed circuit boards, making the production cost higher
When the copper clad laminate is used under high temperature conditions, the bromine element (halogen element) in it is easy to dissociate, which will pose a serious threat to the service life of the electrical appliance, making the service life of the electrical appliance not long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] First example:

[0022] Select 84 parts of epoxy resin, 16 parts of phosphorus-containing compound, 0.041 part of phosphorus-containing catalyst and 34 parts of solvent for use.

[0023] Put the epoxy resin into the container first, and heat it to melt it.

[0024] Thereafter, heating was continued while stirring and blowing nitrogen gas. When the temperature rose to 130° C., a phosphorus-containing catalyst and a phosphorus-containing compound were added and reacted at this temperature for 3 hours to obtain a solid epoxy resin with a phosphorus content of 1.5%.

[0025] Afterwards, heating was stopped, allowed to cool slowly, and when cooled to room temperature, it was taken out and pulverized.

[0026] Afterwards, the solvent and the pulverized solid epoxy resin are put into the container.

[0027] Then, heat up to 72° C. while stirring, and dissolve evenly under the condition of reflux to obtain phosphorus-containing epoxy resin, ie, halogen-free epoxy resin.

[...

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PUM

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Abstract

The present invention relates to no-halogen epoxy resin, and is especially epoxy resin for producing green copper clad panel and other no-halogen fireproof material and its preparation process. The no-halogen epoxy resin is prepared with epoxy resin 58-84 weight portions, phosphorus containing compound 16-42 weight portions, phosphorus containing catalyst 0.04-0.06 weight portions, and solvent 24-34 weight portions, and through mixing, fusing and reaction. The no-halogen epoxy resin may be used in producing no-brome copper clad panel with low production cost and capable of prolonging the service life of corresponding electrical appliance. In addition, the copper clad panel produces no harmful gas when it is burnt.

Description

(1) Technical field [0001] The present invention relates to an epoxy resin. Specifically, it is used to produce epoxy resins for environmentally friendly copper clad laminates and other non-halogenated flame retardant materials. (2) Background technology [0002] Flame-retardant epoxy resin paper-based copper-clad laminates and cloth-based copper-clad laminates are one of the substrates used to produce printed circuit boards. At present, most of the flame-retardant epoxy resin paper-based copper-clad laminates and cloth-based copper-clad laminates use bromine-containing epoxy resin as a solution, and dicyandiamide, phenolic resin, 4,4 diaminodiphenyl sulfone, etc. As an impregnating agent, dimethylimidazole is used as an accelerator and antimony trioxide is used as a synergistic effect compound to prepare an impregnating agent, and the impregnating agent is used to coat the alkali-free glass fiber cloth, and under a certain temperature and pressure, it first forms The prep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/521C08L63/00
Inventor 朱轶谊顾松华丛远明
Owner WUXI ACRYL TECH