Process for preparing epoxy resins having improved physical...

Details Process for preparing epoxy resins having improved physical... Process for preparing epoxy resins having improved physical...

C - Chemistry, Metallurgy

08

G

402/250

C08G 59/00 (2006.01) C08G 59/06 (2006.01) C08G 59/68 (2006.01) C08J 5/24 (2006.01)

Patent

CA 1167197

ABSTRACT OF THE DISCLOSURE This invention is directed to a process for advancing epoxy resins in molecular weight and to a process for preparing resin impregnated sub- strates in which an epoxy resin is reacted with a dihydric phenol in the presence of a sufficient quantity of a phosphonium catalyst such that the product resulting from reacting a mixture of the catalyst, epoxy resin and dihydric phenol has a percent epoxide difference from the theoretical percent epoxide of from 0.5 to 4Ø 29,210-F 29,210-F

391461

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