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US 2002/0058183 A1Published application
Sealed battery case
AssigneeToyoda Gosei Co., Ltd.
InventorsSatoru Ono, Michihiro Kitayama, Mitsuhiro Yoshimura, Junji Koizumi
Life of this patent
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Abstract
A sealed battery case includes a resin composition comprising 50-100% by weight of a crystalline polypropylene resin having a load deflection temperature (load: 1.81 MPa) of 70° C. or higher and an elongation at tension break (23° C., 50 mm/minute) of 50% or more, and 0-50% by weight of a polyphenylene ether based resin. The resin composition has a weld strength (95° C.) of 13 MPa or more, and a notched bending strength (at 95° C.) of 250 N or more.
Claims12
A sealed battery case, comprising:
- a resin composition including,
- (A) 50-100% by weight of a crystalline polypropylene resin having a load deflection temperature of 70° C. or higher at a load of 1.81 Mpa and an elongation at tension break of 50% or more at 23° C. and 50 mm/minute elongation, and
- (B) 0-50% by weight of a polyphenylene ether based resin,
- wherein the resin composition has a weld strength of 13 MPa or more at 95° C., and a notched bending strength of 250 N or more at 95° C.
1 more element
Dependencies are inferred from the claim text.