Process for producing organopolysiloxane with high polymerizatio

Details Process for producing organopolysiloxane with high polymerizatio Process for producing organopolysiloxane with high polymerizatio

1994-05-11

1995-09-12

Bleutge, John C.

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

Synthetic resins

From silicon reactant having at least one...

528 34, 528 38, C08G 7708

Patent

active

054497353

ABSTRACT:
Organopolysiloxanes having a silanol group at both terminal ends of molecular chain thereof are brought into condensation reaction with each other in the presence of a silane or siloxane having at least two dialkylaminosilyl groups per molecule as a condensation catalyst and a triorganosilanol or other endblocking agent, to lengthen the chain of the organopolysiloxane under reaction, whereby a triorganosilyl-endblocked organopolysiloxane with a high polymerization degree is obtained. The process yields a triorganosilyl-endblocked high-polymerization-degree organopolysiloxane while effectively suppressing or preventing the formation of low-molecular-weight siloxanes.

REFERENCES:
patent: 4683251 (1987-07-01), Mikami
patent: 4792596 (1988-12-01), Ottinger et al.
patent: 5109094 (1992-04-01), Rees et al.
patent: 5173558 (1992-12-01), Hansen
Zeigler et al. Silicon-Based Polymer Chemistry 1990, pp. 84-85.

Affiliated with

Also associated with

Rating

Process for producing organopolysiloxane with high polymerizatio does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing organopolysiloxane with high polymerizatio, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing organopolysiloxane with high polymerizatio will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-405915