Processes for preparing aromatic polycarbonates

Details Processes for preparing aromatic polycarbonates Processes for preparing aromatic polycarbonates

1993-05-21

1997-02-25

Dodson, Shelley A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528180, 528182, 528194, 528195, 528196, 528202, 525461, 525462, C08G 6300

Patent

active

056060076

ABSTRACT:
According to the present invention, there is provided an improvement which comprises adding an acid compound and if necessary an epoxy compound to a reaction product resulting from melt polycondensation reaction of an aromatic dihydroxy compound with a carbonic acid diester in the presence of an alkaline compound catalyst.

REFERENCES:
patent: 3833537 (1974-09-01), Jaquiss et al.

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