Transparent blends of polyetherimide resins
AssigneeGeneral Electric Company
InventorsSterling Bruce Brown, Stephen Michael Copper, Brenda A. Giles
Life of this patent
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Abstract
Disclosed are transparent blends of a polyetherimide, at least one resin selected from the group consisting of polycarbonate resins, poly(ester-carbonate) resins, and polyarylate resins, and an effective amount of a catalyst to provide transparency to the blends. In addition to being transparent, the blends have good ductility as well as high flexural and tensile properties. The yellowness index of the compositions can be improved with the addition of a phosphite.
Claims24
A resin composition comprising:
- (a) a polyetherimide resin;
- (b) at least one resin selected from the group consisting of polycarbonate resins, poly(ester-carbonate) resins, and polyarylate resins, provided that the amount of polycarbonate resin is less than or equal to 50 percent by weight, based on the total weight of the composition;
- and
- (c) an effective amount of a catalyst to provide transparency to the composition, wherein said catalyst is sodium phenylphosphinate.
A resin composition consisting essentially of:
- (a) a polyetherimide;
- (b) at least one resin selected from the group consisting of polycarbonate resins, poly(ester-carbonate) resins, and polyarylate resins, provided that the amount of polycarbonate resin is less than or equal to 50 percent by weight, based on the total weight of the composition;
- (c) an effective amount of a catalyst to provide transparency to the composition, wherein said catalyst is sodium phenylphosphinate.
A resin composition comprising at least one reaction product of
- (a) a polyetherimide and
- (b) at least one resin selected from the group consisting of polycarbonate resins, poly(ester-carbonate) resins, and polyarylate resins, provided that the amount of polycarbonate resin is less than or equal to 50 percent by weight, based on the total weight of the composition and further comprising
- (c) an effective amount of a catalyst to provide transparency to the composition, wherein said catalyst is sodium phenylphosphinate.
Dependencies are inferred from the claim text.