Process for making polycarbonates using 1,1-dimethyl urea compou

Details Process for making polycarbonates using 1,1-dimethyl urea compou Process for making polycarbonates using 1,1-dimethyl urea compou

1978-02-02

1979-05-29

Pertilla, Theodore E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528171, C08G 6362

Patent

active

041567692

ABSTRACT:
Thermoplastic polycarbonates are prepared by interfacial polymerization wherein carbonyl halides, dihydric phenols and a catalytic amount of a 1,1-dimethyl urea compound is reacted.
The polycarbonates thus prepared are useful as moldable resins in a manner well known in the art.

REFERENCES:
patent: 3261810 (1966-07-01), Chiba
patent: 3275601 (1966-08-01), Schnell et al.
patent: 3334128 (1967-08-01), Brown
patent: 3763099 (1973-10-01), Jaquiss et al.

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