Ester terminated polycarbonates

Details Ester terminated polycarbonates Ester terminated polycarbonates

1987-12-14

1989-03-21

Pertilla, Theodore E.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525403, 525439, 525453, 525462, 525466, 528176, 528182, 528196, C08L 7700

Patent

active

048143952

ABSTRACT:
A method for the preparation of polycarbonate resins bearing terminal ester groups comprises the interfacial polymerization of a dihydric phenol with a carbonyl halide in the presence of a molecular weight controlling proportion of a compound of the formula: ##STR1## wherein R represents a hydrocarbyl group amenable to beta-elimination upon thermolytic degradation. The product resins are useful as intermediates in the preparation of copolymers with, for example, polyamides.

REFERENCES:
patent: 4358563 (1982-11-01), Quinn
patent: 4556704 (1985-12-01), Rosenquist
patent: 4699971 (1987-10-01), Mark

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