Patent ID: 9056963
Filing Date: 2015-06-16
Classification: C07C,C08K,C09D

Abstract:
1. A method for preparing an alkoxylated Bisphenol A composition containing low residual Bisphenol A comprising the steps of: (a) providing a molten Bisphenol A compound; (b) adding a sufficient amount of base catalyst to the molten Bisphenol A compound to form a catalyst-containing mixture; (c) heating and pressurizing the catalyst-containing mixture; (d) adding a first amount of at least one alkylene oxide compound to the catalyst-containing mixture; (e) allowing the mixture of step “d” to equilibrate for a period of about 1 hour to about 6 hours; (f) adding a second amount of the at least one alkylene oxide compound to the mixture of step “e;” (g) allowing the mixture of step “f” to further react; and (h) allowing the mixture to cool and provide an alkoxylated Bisphenol A composition comprising residual Bisphenol A in an amount that is greater than zero but less than 200 ppm.