Process for the preparation of flame-retardant polycarbonates

Details Process for the preparation of flame-retardant polycarbonates Process for the preparation of flame-retardant polycarbonates

1978-06-30

1980-02-12

Pertilla, Theodore E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

260DIG24, 528128, 528196, 528199, 528202, C08G 6362

Patent

active

041884752

ABSTRACT:
The present invention relates to the preparation of aromatic polycarbonates, by the two-phase interface process, from diphenols, preferably from halogen-free diphenols, characterized in that aromatic monosulphonic acid chlorides are used as chain stoppers in amounts of about 2 mol % to 20 mol %, preferably in amounts of about 2.5 mol % to 10 mol %, relative to mols of the diphenols employed. In addition, the present invention relates to the aromatic polycarbonates obtainable by the process according to the invention.

REFERENCES:
patent: 3177179 (1965-04-01), Lee
patent: 3240756 (1966-03-01), Deanin et al.
patent: 3398120 (1968-08-01), Hindersinn et al.
patent: 3933734 (1976-01-01), Mark
patent: 4020045 (1977-04-01), Baggett
Chemistry and Physics of Polycarbonates, by H. Schnell Interscience Pub., 1964 (pp. 189-207).
Polycarbonates, by W. M. Christopher and D. Fox, Reinhold Pub. Corp., 1962 (pp. 83-160).

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1855650