Process for production of polycarbonate

Details Process for production of polycarbonate Process for production of polycarbonate

1989-04-05

1990-04-17

Pertilla, Theodore E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528125, 528174, 528199, 528204, C08G 6368

Patent

active

049181556

ABSTRACT:
A process for producing polycarbonate is disclosed, comprising reacting a halogenated bisphenol-containing organic dihydroxy compound and a carbonate-forming derivative in a liquid medium in the presence of pentahalogenophenol as a molecular weight modifier. This polycarbonate is superior in flame retardance, impact resistance and fluidity, and further in transparency.

REFERENCES:
patent: 3751400 (1973-08-01), Crennan et al.
patent: 3912687 (1975-10-01), Haupt et al.
patent: 4275187 (1981-06-01), Quinn et al.
Chemical Abstracts of Japan, vol. 81, No. 22, Dec. 2, 1974, p. 25, col. 2, Abstract No. 136938s, Columbus, Ohio, U.S.; & JP-A-74 35000 (Idemitsu Kosan Co., Ltd.) 30-03-1974.

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