Process for controlling the molecular weight of aromatic polycar

Details Process for controlling the molecular weight of aromatic polycar Process for controlling the molecular weight of aromatic polycar

1976-02-26

1977-04-26

Pertilla, Theodore E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 1713

Patent

active

040200450

ABSTRACT:
Process for the preparation of aromatic polycarbonates by the interfacial technique wherein the molecular weight is controlled by adding an effective amount of metallic sulfites to the polymerization reaction. The metallic sulfites are exemplified by alkali metal sulfites, pyrosulfites and hyposulfites.

REFERENCES:
patent: 2970131 (1961-01-01), Moyer et al.
patent: 3035020 (1962-05-01), Fry
patent: 3897391 (1975-07-01), Jaquiss

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