Method for producing polycarbonates

Details Method for producing polycarbonates Method for producing polycarbonates

2005-05-03

2005-05-03

Boykin, Terressa (Department: 1711)

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C502S164000, C528S198000

Reexamination Certificate

active

06887970

ABSTRACT:
The invention relates to a continuous method for producing polycarbonates by transesterifying diaryl carbonates with dihydroxyaryl compounds in the presence of quaternary onium compounds. The invention also relates to polycarbonates produced thereby and products produced from said polycarbonates.

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patent: 0 564 727 (1993-10-01), None
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