Hydroxy terminated polycarbonate from hydroxy benzene alkanol

Details Hydroxy terminated polycarbonate from hydroxy benzene alkanol Hydroxy terminated polycarbonate from hydroxy benzene alkanol

1988-12-30

1990-06-12

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525462, 528176, 528179, 528196, C08G 6362

Patent

active

049334247

ABSTRACT:
A method for the preparation of aromatic polycarbonate resins bearing terminal hydroxy 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 and R' each independently represent hydrogen and hydrocarbyl of 1 to about 12 carbons; or R and R' when taken together with the carbon atom between them represent cycloalkyl of 3 to 8 carbon atoms, inclusive. The novel product resins are useful as intermediates in the preparation of copolymers with, for example, polyesteramides and as cross-linking agents, to cross-link polycarbonates and like resins.

REFERENCES:
patent: 4732934 (1988-03-01), Hathaway et al.
patent: 4774315 (1988-09-01), Miller

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