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US 5,633,319 AGranted
Compatibilized blends of polyetherimides and liquid crystalline polyesters
AssigneesGeneral Electric Company, E. I. Du Pont de Nemours and Company
InventorsNorberto Silvi, Sterling B. Brown, Mark H. Giammattei, King L. Howe
Life of this patent
Estimating the term…
Abstract
Non-delaminating resinous compositions are prepared by blending at least one polyetherimide, at least one liquid crystalline polyester in an amount to provide lower melt viscosity, and a compatibilizing amount of at least one polyepoxy compound. The compositions may also contain a minor proportion of at least one non-liquid crystalline polyester such as poly(ethylene terephthalate) or poly(ethylene 2,6-naphthalenedicarboxylate).
Claims17
A non-delaminating resinous composition comprising the following and any reaction products thereof:
- (A) a major proportion of at least one polyetherimide,
- (B) a minor proportion, effective to provide an apparent viscosity in said composition, at 350.degree. C. and a shear rate of 1000 sec.sup.-1, lower than that of said polyetherimide, of at least one liquid crystalline polyester, and
- (C) a minor proportion, effective to compatibilize components (A) and (B) and suppress delamination in said composition, of at least one polyepoxy compound.
Dependencies are inferred from the claim text.