Process for the preparation of branched polycarbonates

Details Process for the preparation of branched polycarbonates Process for the preparation of branched polycarbonates

1978-04-07

1979-11-13

Pertilla, Theodore E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528172, 528196, 528198, 528202, 528203, C08G 6362

Patent

active

041744373

ABSTRACT:
The present invention relates to a process for the preparation of branched thermoplastic polycarbonates, characterized in that diphenols are completely reacted with about 0.05 to about 2.0 mol %, relative to mols of diphenols, of cyanuric chloride in a primary reaction, while controlling the pH and temperature and in the presence of a co-solvent, and thereafter the products are subjected to polycondensation, in accordance with known methods of the phase boundary process, to give high-molecular weight, branched polycarbonates. The invention further relates to the branched polycarbonates prepared by this process.

REFERENCES:
patent: 3541049 (1970-11-01), Cleveland
patent: 4001183 (1977-01-01), Frietag
patent: 4059565 (1977-11-01), Yoshizaki
patent: 4104245 (1978-08-01), Mark

Affiliated with

Also associated with

Rating

Process for the preparation of branched polycarbonates 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 the preparation of branched polycarbonates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of branched polycarbonates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2272549