Method of preparing epoxy-glass prepregs

Details Method of preparing epoxy-glass prepregs Method of preparing epoxy-glass prepregs

1974-11-20

1978-07-18

Gwinnell, Harry J.

Coating processes

With post-treatment of coating or coating material

Heating or drying

427390A, 428273, B05D 302, B32B 1710

Patent

active

041016939

ABSTRACT:
Epoxy resin compositions comprising a first epoxy resin having a relatively low epoxy equivalent weight of about 170 to 200 and an average functionality of 2 or less, a second epoxy resin having a relatively high epoxy equivalent weight of about 900 to 1900 and an average functionality of 2 or less, and a curing system. Glass fabric is impregnated with the epoxy resin composition and formed into laminates, which are especially useful in the manufacture of printed circuit boards.

REFERENCES:
patent: 3177090 (1965-04-01), Bayes
patent: 3321549 (1967-05-01), Barth
patent: 3424707 (1969-01-01), Schaufelberger
patent: 3454421 (1969-07-01), Westbrook
patent: 3477900 (1969-11-01), Soukup et al.

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