Method for preparing bisphenol A

Details Method for preparing bisphenol A Method for preparing bisphenol A

1990-12-20

1992-02-11

Lone, Werren B.

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

Organic compounds

Oxygen containing

568722, 568724, 568728, C07C 396, C07C 3720

Patent

active

050877674

ABSTRACT:
A method for preparing 2,2-bis(4-hydroxyphenyl)propane comprises reacting acetone and phenol in the presence of an acidic ion-exchange resin as a catalyst wherein the reaction of acetone and phenol is performed while removing a part of the water generated during the reaction from a mixed solution containing acetone and phenol by a pervaporation method. According to the method, the water generated through the reaction can rapidly be removed simultaneously with or alternatively to the reaction by a pervaporation operation and, therefore, the catalytic activity of the ion-exchange resin is not impaired at all. Moreover, any complicated operations associated with the dehydration are not required. Thus, the acidic ion-exchange resin catalyst can continuously be used over a long time period without any treatment for the regeneration thereof. Further, according to the method, bisphenol A can be economically prepared from acetone and phenol in a high conversion rate and high yield.

REFERENCES:
patent: 2572141 (1951-10-01), Harris
patent: 2884462 (1959-04-01), Henry
patent: 4777301 (1988-10-01), Olson
Patent Abstracts of Japan, vol. 10, No. 252 (C-369)(2308), 08/29/86; JP-A-6178741.

Affiliated with

Also associated with

Rating

Method for preparing bisphenol A does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for preparing bisphenol A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing bisphenol A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-782922