Polycarbonates and a process for their preparation

Details Polycarbonates and a process for their preparation Polycarbonates and a process for their preparation

1978-02-27

1978-11-28

Schain, Howard E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528196, 260583N, 260563C, 260568, 260583J, C08G 6362

Patent

active

041275616

ABSTRACT:
The present invention provides thermoplastic aromatic polycarbonates and a process for their production according to the phase boundary polycondensation process, characterized in that tertiary amines are employed as catalysts and are distilled beforehand over about 0.3-10% by weight, relative to the weight of the tertiary amine, of reducing agents and/or acid anhydrides with the exclusion of atmospheric oxygen.

REFERENCES:
patent: 3220975 (1965-11-01), Fox
patent: 3275601 (1966-09-01), Schnell et al.
patent: 3305520 (1967-02-01), Fritz et al.
patent: 3419526 (1968-12-01), Schnell et al.
patent: 3787359 (1974-01-01), Horn et al.
patent: 3794629 (1974-02-01), Eimers et al.
patent: 3875112 (1975-04-01), Bockmann et al.
patent: 4038252 (1977-07-01), Vernaleken et al.
patent: 4073769 (1978-02-01), Eimers et al.
Encyclopedia of Chem. Technology, vol. 2, 1964, Kirk-Othmer, pp. 117 & 125.

Affiliated with

Also associated with

Rating

Polycarbonates and a process for their preparation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polycarbonates and a process for their preparation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polycarbonates and a process for their preparation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-977148