Thermoplastic blends and articles made therefrom
AssigneeGeneral Electric Company
InventorsNicola Cont, Bo Liu, Xiaomin Zhang, Jayantha Amarasekera
Life of this patent
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Abstract
An internally lubricated thermoplastic composition consisting essentially of 5 to 50 wt. % of a polycarbonate; 35 to 90 wt. % of a polyalkylene terephthalate, a polyalkylene naphthanoate resin, or blends thereof; 0.5 to 4 wt. % of a modified polyolefin; and optionally, up to 30 wt. % of a flame retardant agent, with a balanced fatigue and dimensional stability properties. Articles molded from the composition of the invention display excellent wear performance properties.
Claims19
A thermoplastic composition consisting essentially of
- 5 to 50 wt. % of a polycarbonate (component A);
- 35 to 90 wt. % of a polyalkylene terephthalate, a polyalkylene naphthanoate resin, or blends thereof (component B);
- 0.5 to 4 wt. % of a modified polyolefin;
- and
- optionally, up to 30 wt. % of a flame retardant agent (component D).
A thermoplastic composition consisting essentially of:
- 35 to 50 wt. % of a polycarbonate (component A);
- 35 to 50 wt. % of a poly(1,4-butylene terephthalate);
- 0.5 to 4 wt. % of a modified polyolefin modified by an unsaturated monomer having a glycidyl epoxy group and an unsaturated monomer having a carboxyl group or an acid anhydride group, or 0.5 to 4 wt % of a polyolefin modified with functional groups containing imide acid by any desired means;
- and
- up to 30 wt. % of brominated compounds or a phosphoric ester type flame retardant or a halogenated phosphoric ester type flame retardant.
A method comprising blending to to form a thermoplastic composition:
- 5 to 50 wt. % of a polycarbonate (component A);
- 35 to 90 wt. % of a polyalkylene terephthalate, a polyalkylene naphthanoate resin, or blends thereof (component B);
- 0.5 to 4 wt. % of a modified polyolefin;
- and
- optionally, up to 30 wt. % of a flame retardant agent (component D).
Dependencies are inferred from the claim text.