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US 4,544,734 AGranted
Modified thermoplastic copolyetherimide ester elastomers
AssigneeGeneral Electric Company
InventorRussell J. McCready
Life of this patent
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Abstract
Novel modified polyetherimide esters are prepared from diols, dicarboxylic acids and a combination of polyoxyalkylene diimide diacids and dimer acid. These compositions have many excellent properties which make them particularly useful for extrusion and molding applications.
Claims29
A polyetherimide ester composition comprising the reaction product of
- (a) one or more low molecular weight diols,
- (b) one or more dicarboxylic acids, and
- (c) a combination of (i) one or more polyoxyalkylene diimide diacids and (ii) one or more dimer acids wherein the amount of dimer is from about 5 to about 40 percent by weight based on the combined weight of (i) and (ii).
A polyetherimide ester composition comprising the reaction product of (a) 1,4-butanediol (b) dimethylterephthalate and (c) a combination of (i) a polyoxyalkylene diimide diacid derived from trimellitic anhydride and a polyoxyalkylene diamine having the formula:
- H.sub.2 N--G--NH.sub.2
- wherein G is the divalent radical remaining after removal of the amino groups of a long chain alkylene ether diamine having a molecular weight of from about 600 to about 12000 and (ii) a dimer acid wherein the amount of dimer is from about 5 to about 40 percent by weight based on the combined weight of (i) and (ii).
Dependencies are inferred from the claim text.