Process for preparing polycarbonates using cyclic isourea cataly

Details Process for preparing polycarbonates using cyclic isourea cataly Process for preparing polycarbonates using cyclic isourea cataly

1979-12-28

1981-04-14

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528126, 528175, 528182, 528198, C08G 6362

Patent

active

042621127

ABSTRACT:
An interfacial polymerization process for preparing a high molecular weight aromatic carbonate polymer by reacting a dihydric phenol with a carbonate precursor in the presence of a catalytic amount of a cyclic isourea compound.

REFERENCES:
patent: 3763099 (1973-10-01), Jaquiss

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