Method for the production of bisphenol-a

US6710211B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Frieder Heydenreich · Düsseldorf, DE
• Michael Prein · Brasschaat, BE
• Michael Bödiger · Dormagen, DE
• Rainer Neumann · Krefeld, DE

Key dates

• Filing date: Aug 26, 2002
• Grant date: Mar 23, 2004
• Expiry date: Aug 26, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C37/84
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

2,2-bis(4-hydroxyphenyl)propane (BPA) is produced by reacting acetone and phenol in the presence of cross-linked sulfonated polystyrene resins and then separating the BPA off from the reaction solution.