Preparation of benzoate ester terminated polycarbonate with aroy

Details Preparation of benzoate ester terminated polycarbonate with aroy Preparation of benzoate ester terminated polycarbonate with aroy

1982-08-18

1984-05-15

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525462, 528199, C08G 6362

Patent

active

044489536

ABSTRACT:
A process for preparing an aromatic polycarbonate of controlled molecular weight which comprises interfacially reacting in water and an organic solvent, a dihydric phenol, a carbonate precursor and a molecular weight controlling effective amount of a compound of the formula ##STR1## wherein n is an integer having a value of from 0 to 5 inclusive; Y is a halide or hydroxyl; and each R is independently selected from the group consisting of alkyl radicals, aryl radicals, alkaryl radicals, aralkyl radicals, alkoxy radicals, aryloxy radicals, halides, ##STR2## radicals wherein R.sup.2 is selected from hydrogen, alkyl radicals or acyl radicals or R.sup.3 is an acyl radical or --C.tbd.N. The polymers are useful in injection molded articles.

REFERENCES:
patent: 3133045 (1964-05-01), Deanin et al.
patent: 3475373 (1969-10-01), Jackson, Jr.
patent: 4334053 (1982-06-01), Freitag

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