Method for producing bisphenol catalysts and bisphenols

Details Method for producing bisphenol catalysts and bisphenols Method for producing bisphenol catalysts and bisphenols

2005-04-26

2005-04-26

Aulakh, Charanjit S. (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C568S728000, C568S727000, C502S168000, C502S167000, C548S304400

Reexamination Certificate

active

06884894

ABSTRACT:
This disclosure relates to a method for producing and using catalysts in the production of bisphenols, and in particular to a method for producing catalysts which contain poly-sulfur mercaptan promoters, and using these catalysts in the production of bisphenol-A and its derivatives.

REFERENCES:
patent: 5206131 (1993-04-01), Matsuda et al.
patent: 5414151 (1995-05-01), Pressman et al.
patent: 5428075 (1995-06-01), Pressman et al.
patent: 5618778 (1997-04-01), Wirth et al.
patent: 5932731 (1999-08-01), Goda et al.
patent: 6150307 (2000-11-01), Camenzind et al.
patent: 02108039 (1990-04-01), None
patent: 11-179210 (1999-07-01), None
patent: 11-246458 (1999-09-01), None
Japanese Patent Abstract for JP 02108039 A Application Date Oct. 18, 1988.
Japanese Patent Abstract for JP 04063301 A Application Date Jul. 3, 1990.

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