Polycarbonate transesterification with tetraborate or tetraalumi

Details Polycarbonate transesterification with tetraborate or tetraalumi Polycarbonate transesterification with tetraborate or tetraalumi

1981-05-11

1982-08-17

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528199, 528200, C08G 6362

Patent

active

043450628

ABSTRACT:
An improved aromatic polycarbonate transesterification process comprising reacting a bis(aryl)carbonate and a phenol in the presence of a transesterification catalyst containing tetraborate or tetraaluminate anions, the improvement wherein the catalyst species is pre-formed under equilibration reaction conditions with either a phenol or a bis(aryl)carbonate prior to initiation of the transesterification reaction.

REFERENCES:
patent: 3153008 (1964-10-01), Fox

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