Polycarbonate from carbonyl halide, bischloroformate and dihydri

Details Polycarbonate from carbonyl halide, bischloroformate and dihydri Polycarbonate from carbonyl halide, bischloroformate and dihydri

1982-08-23

1985-02-26

Anderson, Harold D.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525462, 528171, 528174, 528370, C08G 6362

Patent

active

045018758

ABSTRACT:
Novel carbonate polymers exhibiting improved processability comprised of the polymerized reaction products of (i) at least one dihydric phenol, (ii) a carbonyl halide carbonate precursor, and (iii) at least one specific bishaloformate. The bishaloformate is selected from bishaloformates represented by the general formulae ##STR1## wherein: X is independently selected from chlorine and bromine radicals;

REFERENCES:
patent: 3030335 (1962-04-01), Goldberg
patent: 3493534 (1970-02-01), Coury et al.
patent: 4381358 (1983-04-01), Rosenquist

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