Bisphenol A diglycidyl ether → Benzene-1,3-diol;ethoxyethane

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

A resorcinol-formaldehyde resin/diglycidyl ether of bisphenol A addition product was prepared in a lab reactor by a procedure comparable to that employed in Example 1. The reactor was charged with about 31.1 g. of a commercial resorcinol-formaldehyde resin, Penacolite B-19-S, (INDSPEC Chemical Corporation, Pittsburgh, Pa., U.S.A.), 125 ml methyl isobutyl ketone and 0.5 g. triphenylphosphine. Then, 90.4 g diglycidyl ether of bisphenol A (Dow epoxy resin DER-331) was added dropwise in about 0.5 hours. The stirred solution was refluxed for about one hour at about 117° C. and devolatilized at reduced pressure to give a dark amber resorcinol ether compound (RE2) having a 72° C. softening point, and having a 0.9 wt. % residual oxirane oxygen.

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