Polyester polycarbonates

Details Polyester polycarbonates Polyester polycarbonates

1979-12-14

1981-05-12

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

521125, 521172, 521174, 521902, 528 80, 528 83, 528272, 528297, 528301, C07C 6996, C08G 6362

Patent

active

042671205

ABSTRACT:
Covers polyester polycarbonates of the structure: ##STR1## wherein X and Y, independently, are H, methyl, or ethyl, m and n independently are integers of 1-5, R is a nucleus of a glycol selected from the group of lower alkylene glycols and polyalkylene glycols of up to about 600 molecular weight, Z is an organic radical from a cyclic organic acid anhydride having 4-20 carbon atoms, and r is an integer of 1-5.
Also covers a method of preparing said polyester polycarbonates as well as polyurethanes derived therefrom, as well as polyisocyanurate polymers containing both isocyanurate linkages and urethane linkages.

REFERENCES:
patent: 3030331 (1962-04-01), Goldberg
patent: 3449467 (1969-06-01), Wynstra
patent: 4041018 (1977-08-01), Binsack et al.
patent: 4072704 (1978-02-01), Langdon

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