Michael D Szillat

US Patent:

6891073, May 10, 2005

Filed:

Dec 23, 2003

Appl. No.:

10/744883

Inventors:

Gaylord Michael Kissinger - Evansville IN, US
Allen Wai-Yee Ko - Evansville IN, US
Michael D. Szillat - Evansville IN, US
Brian T. Carvill - Evansville IN, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

L07L039/16

US Classification:

568728, 422140, 422211, 422212

Abstract:

A method for producing bisphenol includes introducing a phenol and a ketone into a fixed, supported catalytic bed reactor system in a downflow mode, reacting the phenol and the ketone to form a reaction mixture, and recovering the bisphenol isomer from the reaction mixture. The preferred bisphenol isomer is bisphenol A, or p,p′-bisphenol A, produced from the reaction of phenol and acetone. The reactor for producing the bisphenol A from the reaction of phenol and acetone includes an ion exchange resin catalyst disposed in a bed and packing randomly distributed throughout the ion exchange resin catalyst to improve heat transfer efficiency and reduce compression of the catalyst bed.

US Patent:

20030166976, Sep 4, 2003

Filed:

Feb 28, 2002

Appl. No.:

09/683898

Inventors:

Gaylord Kissinger - Evansville IN, US
Allen Ko - Evansville IN, US
Michael Szillat - Evansville IN, US
Brian Carvill - Evansville IN, US

International Classification:

C07C037/20

US Classification:

568/728000

Abstract:

A method for producing bisphenol includes introducing a phenol and a ketone into a fixed, supported catalytic bed reactor system in a downflow mode, reacting the phenol and the ketone to form a reaction mixture, and recovering the bisphenol isomer from the reaction mixture. The preferred bisphenol isomer is bisphenol A, or p,p′-bisphenol A, produced from the reaction of phenol and acetone. The reactor for producing the bisphenol A from the reaction of phenol and acetone includes an ion exchange resin catalyst disposed in a bed and packing randomly distributed throughout the ion exchange resin catalyst to improve heat transfer efficiency and reduce compression of the catalyst bed.