Process for preparing polycarbonate using certain nitrogen-conta

Details Process for preparing polycarbonate using certain nitrogen-conta Process for preparing polycarbonate using certain nitrogen-conta

1979-12-28

1981-08-25

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

042860849

ABSTRACT:
An interfacial polymerization process for preparing high molecular weight aromatic polycarbonates by reacting a dihydric phenol with a carbonate precursor in the presence of a catalytic amount of a 5 to 8 membered heterocyclic compound which contains only carbon and nitrogen atoms in the ring and further characterized in that the ring contains at least two nitrogen atoms and at least one carbon atom, and in that the ring is aromatic in character and contains a maximum amount of olefinic unsaturation.

REFERENCES:
patent: 3428600 (1969-02-01), Sullivan et al.
patent: 3763099 (1973-10-01), Jaquiss

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