Epoxy resins containing phosphonium catalysts

Details Epoxy resins containing phosphonium catalysts Epoxy resins containing phosphonium catalysts

1988-09-23

1990-06-12

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528297, 528361, 528365, 525481, 525482, 525485, 525488, 525502, 525508, 525534, C08G 5968

Patent

active

049334204

ABSTRACT:
Epoxide compounds and phenolic compounds are reacted in the presence of phosphonium compounds represented by the formula .crclbar.Z'R.sup.1 R.sup.2 R.sup.3 P.sym.-Z-P.sym.R.sup.1 R.sup.2 R.sup.3 Z'.crclbar. wherein each R.sup.1, R.sup.2 and R.sup.3 is independently an aromatic group or an inertly substituted aromatic group; Z is --(C(R.sup.4).sub.2).sub.a --; each R.sup.4 is independently hydrogen or a hydrocarbyl group containing from 1 to about 20 carbon atoms; Z' is any suitable anion and a has a value of at least 4.

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