Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2006-12-26
2006-12-26
Mullis, Jeffrey (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S338000
Reexamination Certificate
active
07153906
ABSTRACT:
The invention relates to a resin composition for a battery case for secondary battery, comprising:(a) about 100 parts by weight of a polypropylene type resin having a density of propylene polymer portion of about 0.905 g/cm3or more and an MFR of about 0.1 to 12, composing a matrix phase,(b) about 0.5 to 10 parts by weight of component (b-1) or (b-2), composing a dispersed phase polymer, and(c) a hydrogenated block copolymer obtained by hydrogenating a block copolymer; said hydrogenated block copolymer composing a boundary surface between the component a) and the component (b); wherein(b-1) is a hydrogenated block copolymer having a number average molecular weight of about 100,000 or more, in terms of polystyrene, and(b-2) is a high-density polyethylene having a density of about 0.940 g/cm3or more.
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German Office Action issued Nov. 25, 2003 in the German counterpart (original and English translation).
Akiyama Yoshikuni
Sakata Minoru
Asahi Kasei Kabushiki Kaisha
Dickstein , Shapiro, LLP.
Mullis Jeffrey
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