Modified ion exchange resins and use thereof

Details Modified ion exchange resins and use thereof Modified ion exchange resins and use thereof

1995-04-06

1996-12-31

Zitomer, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 32, 525351, 568727, 568728, C07C 3912, C07C 3906, C07C 3916

Patent

active

055895174

ABSTRACT:
A modified strongly acidic ion exchange resin of a sulfonic acid type is disclosed. Modification is conducted by ionically binding a particular N,N-di-substituted mercaptoalkylamine to a strongly acidic ion exchange resin of a sulfonic acid type. The N,N-di-substituted mercaptoalkylamine is specifically represented by the following formulae: ##STR1## wherein R.sup.1 represents hydrogen or a C.sub.1-6 alkyl group, R.sup.2 and R.sup.3 independently represent a C.sub.1-10 alkyl group, a and b denote 0-3, respectively, a+b denotes 2 or 3, and m denotes 4 or 5. The modified ion exchange resin makes an improved catalyst in the preparation of a bisphenol by the condensation reaction of a phenol with a ketone.

REFERENCES:
patent: 3394089 (1968-07-01), McNutt
patent: 4308405 (1981-12-01), Kwantes
European Search Report; Application No. 95105289.3; Dated Jun. 29, 1995.

Affiliated with

Also associated with

Rating

Modified ion exchange resins and use thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Modified ion exchange resins and use thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modified ion exchange resins and use thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1142574