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US 4,393,190 AGranted
Carbonate copolymers prepared from imide reactants
AssigneeGeneral Electric Company
InventorsJohn A. Tyrell, Gary L. Freimiller
Life of this patent
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Abstract
Novel carbonate polymers comprised of the reaction product of a dihydric phenol, a carbonate precursor, and at least one imide selected from the group of compounds represented by the formulae ##STR1##
Claims22
An endcapped polymer composition comprised of the reaction product of:
- (i) a dihydric phenol;
- (ii) a carbonate precursor;
- and
- (iii) at least one imide selected from the group consisting of imides in chain terminating effective amount represented by the general formula ##STR16## and imides in quantities of from about 1 to about 85 mole percent based on the amount of dihydric phenol represented by the general formula ##STR17## wherein each R is independently selected from hydrogen, alkyl radicals, alkoxy radicals, and halogen radicals, and wherein each R.sup.1 is independently selected from hydrogen, alkyl radicals, alkoxy radicals, and halogen radicals with the proviso that at least one imide compound of the first formula is employed.
1 more element
A copolyester-carbonate polymer composition comprised of the reaction product of:
- (i) a dihydric phenol;
- (ii) a difunctional aromatic dicarboxylic acid or its reactive derivative;
- (iii) a carbonate precursor;
- and
- (iv) at least one imide selected from the group of imides in chain terminating effective amount represented by the general formula ##STR22## wherein each R is independently selected from hydrogen, alkyl radicals, halogen radicals and alkoxy radicals, and each R.sup.1 is independently selected from hydrogen, alkyl radicals, halogen radicals and alkoxy radicals;
- the molar ratio of (i) plus the compound of the second formula (iv) to (ii) is in the range of 1.00:0.05 to about 1.00:0.70.
3 more elements
The composition of claim 12 wherein said carbonate precursor is a carbonyl halide.
Dependencies are inferred from the claim text.