Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer or spacer insulating structure
Reexamination Certificate
2004-04-01
2010-11-16
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer or spacer insulating structure
C428S3550EN
Reexamination Certificate
active
07833654
ABSTRACT:
The invention provides an adhesive-carrying porous film for use as a battery separator, comprising: a substrate porous film, wherein when a 1 mm diameter penetrating thermomechanical analyzer probe is placed on the film under a 70 g load to measure a thickness while heating the film from room temperature at a rate of 200° C./minute to a temperature where the film thickness decreases by half when the probe was initially placed is 200° C. or more, a partially crosslinked adhesive carried on the film, the adhesive is prepared by reacting a reactive polymer having a functional group capable of reacting with an isocyanate group with a polyfunctional isocyanate so the reactive polymer is partially crosslinked, a porous film is temporarily bonded to an electrode to provide an electrode/separator laminate, the porous film in a battery functions as a separator which does not melt or break with small heat shrinkage under high temperatures.
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International Search Report dated Jun. 29, 2004 in International (PCT) Application No. PCT/JP2004/004801.
Ichikawa Tomoaki
Kii Keisuke
Satsuma Michio
Uetani Yoshihiro
Yamaguchi Mutsuko
Nitto Denko Corporation
Parsons Thomas H.
Ryan Patrick
Wenderoth , Lind & Ponack, L.L.P.
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