Process for preparing resin impregnated substrates for use in pr

Details Process for preparing resin impregnated substrates for use in pr Process for preparing resin impregnated substrates for use in pr

1979-09-27

1981-02-17

Pianalto, Bernard D.

Stock material or miscellaneous articles

Composite

Of epoxy ether

427 58, 4273722, B32B 2738

Patent

active

042515947

ABSTRACT:
The preparation of substrates impregnated with epoxy resins and curing agents therefor is improved by employing as the epoxy resin one which has been prepared by reacting a low equivalent weight epoxy resin having an aliphatic halide content of at least about 500 ppm such as a diglycidyl ether of bisphenol A with a dihydric phenolic compound such as tetrabromo bisphenol A in the presence of an alkali metal hydroxide such as potassium hydroxide.

REFERENCES:
patent: 3306872 (1967-02-01), Maycock et al.
patent: 3480471 (1969-11-01), Rembold
patent: 3679465 (1972-07-01), Flynn
patent: 3687894 (1972-09-01), Collings et al.
patent: 3738862 (1973-06-01), Kharquist
patent: 3998983 (1976-12-01), Smith
patent: 4075260 (1978-02-01), Tsen
patent: 4168331 (1979-09-01), Davis

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