Catalyzed interfacial polycondensation polycarbonate process

Details Catalyzed interfacial polycondensation polycarbonate process Catalyzed interfacial polycondensation polycarbonate process

1984-04-16

1985-05-07

Pertilla, Theodore E.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

524714, 524745, 524841, 528196, 528198, 528199, C08G 6362

Patent

active

045159360

ABSTRACT:
This invention relates to a catalyzed interfacial polycondensation aromatic polycarbonate process which comprises forming an agitated two-phase mixture comprising an organic solvent phase with catalyst and an aqueous phase containing an aromatic dihydroxy compound, a base and an ionic surfactant. A carbonyl halide is added to the mixture and reacted with the aromatic dihydroxy compound to form an aromatic polycarbonate. The aromatic polycarbonate is recovered from the aqueous phase.

REFERENCES:
patent: 3153008 (1964-10-01), Fox
patent: 3318845 (1967-05-01), Dietrich et al.
patent: 3376261 (1968-04-01), Jackson, Jr. et al.
patent: 4368315 (1983-01-01), Sikdar
patent: 4384108 (1983-05-01), Campbell et al.

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