Copolyester-carbonates containing aliphatic diol co-monomers
AssigneeGeneral Electric Company
InventorNiles R. Rosenquist
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Abstract
Copolyester-carbonate resins, and articles molded therefrom, exhibiting improved processability comprising the reaction product of; (i) at least one dihydric phenol; (ii) a carbonyl halide carbonate precursor; (iii) at least one difunctional carboxylic acid or a reactive derivative thereof; and (iv) at least one bishaloformate represented by the general formula ##STR1## wherein X represents a halogen radical and R represents an alkylene radical, said bishaloformate being present in an amount effective to improve the processability of said resin.
Claims28
A copolyester-carbonate resin composition exhibiting improved processability comprised of the polymerized reaction product of:
- (i) at least one dihydric phenol;
- (ii) a carbonyl halide carbonate precursor;
- (iii) at least one difunctional carboxylic acid or a reactive derivative thereof;
- and
- (iv) a processability improving amount of at least one bishaloformate represented by the formula ##STR12## wherein X represents a halide radical and R represents an alkylene radical containing from 2 to about 20 carbon atoms.
Dependencies are inferred from the claim text.