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US 4,556,705 AGranted
Thermoplastic polyetherimide ester elastomers
AssigneeGeneral Electric Company
InventorRussell J. McCready
Life of this patent
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Abstract
Novel polyetherimide esters are prepared from diols, dicarboxylic acids and polyoxyalkylene diimide diacids. These compositions have many excellent properties which make them particularly useful for extrusion and molding applications.
Claims27
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) one or more polyoxyalkylene diimide diacids.
A polyetherimide ester composition comprising the reaction product of (a) 1,4-butanediol (b) dimethylterephthalate and (c) 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 hydroxy groups of a long chain ether glycol having a molecular weight of from about 600 to about 12000.
Dependencies are inferred from the claim text.