Patent ID: 9527950
Filing Date: 2016-12-27
CPC Classification: C08G

Claim Text:
1. A process comprising: a) contacting a polyhydric phenol and an epihalohydrin in the presence of a catalyst under reaction conditions to form an organic feed comprising a bishalohydrin ether and at least 10 weight percent of a solvent, wherein the molar ratio of said epihalohydrin to said polyhydric phenol is in the range of from 1:1 to 50:1; b) contacting said organic feed comprising a bishalohydrin ether and at least 10 weight percent of a solvent and an aqueous feed comprising an inorganic hydroxide in a reciprocating-plate column reactor under reaction conditions to form a dispersed aqueous phase and an organic product, wherein said reaction conditions comprise a reaction temperature of from 15° C. to 50° C.; and c) collecting said organic product comprising an epoxy resin, wherein the epihalohydrin yield loss ranges from 2.5% to 6.6% used to make the epoxy resin.