Catalytic preparation of high molecular weight polysiloxanes

Details Catalytic preparation of high molecular weight polysiloxanes Catalytic preparation of high molecular weight polysiloxanes

1983-05-31

1985-04-02

Garvin, Patrick

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

B01J 3108, B01J 3110

Patent

active

045088454

ABSTRACT:
Polysiloxanes of relatively low molecular weight are catalytically polymerized/rearranged into high molecular weight polysiloxanes in the presence of a cationic catalyst comprising a porous, inorganic mineral particulate support having an average pore diameter in excess of 20 .ANG. and a pore volume ranging from 0.2 to 2 ml/g, said porous support being coated with less than 15 mg/m.sup.2 of a film of polymeric material comprising pendant sulfonic or phosphonic acid functions, and said polymeric material being characterized by an ion exchange capacity of less than 2 milliequivalents per gram.

REFERENCES:
patent: 4038213 (1977-07-01), McClure et al.
patent: 4222952 (1980-09-01), Vick
patent: 4250052 (1981-02-01), Smith
patent: 4414146 (1983-11-01), Olechowski et al.

Affiliated with

Also associated with

Rating

Catalytic preparation of high molecular weight polysiloxanes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalytic preparation of high molecular weight polysiloxanes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalytic preparation of high molecular weight polysiloxanes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1091652