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US 2008/0176990 A1Published application
Polycarbonate compositions, articles, and method of manufacture
AssigneeGeneral Electric Company
InventorsLuc Govaerts, Wim Steendam, Rob Venderbosch
Life of this patent
Estimating the term…
Abstract
A thermoplastic composition comprises about 10 to about 85 wt. % of a polycarbonate resin; about 1 to about 40 wt. % of an impact modifier composition; and about 1 to about 50 wt. % of an impact-modified alkyl(meth)acrylate polymer; each based on the total combined weight of the thermoplastic composition, exclusive of any filler. The compositions have improved weld line strength, and are useful in the manufacture of molded parts, especially for electronic devices.
Claims23
A thermoplastic composition, comprising:
- about 10 to about 85 wt. % of a polycarbonate resin;
- about 1 to about 40 wt. % of an impact modifier composition;
- and
- about 1 to about 50 wt. % of an impact-modified alkyl(meth)acrylate polymer;
- each based on the total combined weight of the thermoplastic composition, exclusive of any filler.
2 more elements
A thermoplastic composition, comprising:
- about 20 to about 80 wt. % of a polycarbonate resin;
- about 2.5 to about 35 wt. % of an impact modifier composition;
- and
- about 5 to about 35 wt. % of an impact-modified alkyl(meth)acrylate polymer;
- each based on the total combined weight of the thermoplastic composition, exclusive of any filler, and
- wherein a sample bar of the thermoplastic composition molded in a double gated mold and having a thickness of 2 mm (+10%) has a tensile Charpy of greater than about 100 kJ/m2 measured in accordance with DIN 53448-B.
3 more elements
A thermoplastic composition comprising:
- about 20 to about 80 wt. % of a polycarbonate resin;
- about 2.5 to about 35 wt. % of an impact modifier composition, wherein the impact modifier is ABS, MBS, AES, MABS, ASA, or a combination comprising at least one of the foregoing impact modifiers;
- and
- about 5 to about 35 wt. % of an impact-modified alkyl(meth)acrylate polymer, wherein the impact-modified poly(alkyl(meth)acrylate) comprises PMMA;
- each based on the total combined weight of the thermoplastic composition, exclusive of any filler, and
- wherein a sample bar of the thermoplastic composition molded in a double gated mold and having a thickness of 2 mm (±10%) has a tensile Charpy of greater than about 100 kJ/m2 measured in accordance with DIN 53448-B.
3 more elements
Dependencies are inferred from the claim text.