Process for preparing bisphenols

US7321069B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Gurram Kishan · Bengaluru, IN
• Ramesh Krishnamurti · Williamsville, US
• Kapila Debjani · Bengaluru, IN
• Arakali Radhakrishna Srinivasarao · Bengaluru, IN
• Jan-Pleun Lens · Breda, NL

Key dates

• Filing date: Dec 17, 2004
• Grant date: Jan 22, 2008
• Expiry date: Nov 29, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing aromatic bisphenols, wherein the method comprises reacting an aromatic hydroxy compound with an alkylating agent having a functionality of two in the presence of a catalyst system. The catalyst system used for the process is selected from the group consisting of a heteropolyacid compound, a clay, a functionalized metal oxide catalyst and combinations of the foregoing.