Patent ID: 6562519
Filing Date: 2003-05-13
Classification: C08J,H01M,Y02E,Y10T

Abstract:
A separator for a non aqueous-electrolyte battery, which comprises a single-layer microporous film comprising a resin having a crosslinked structure, wherein the microporous film has a gel content of from 20 to 90% as determined through 3-hour immersion in boiling xylene and a modulus of elasticity as measured at 150Â° C. of from 1Ã—106 to 1Ã—108 Pa, said film having been formed from a resin and a crosslinkable ingredient in an amount of 1 to 50% by weight, wherein said crosslinkable ingredient is a polymer formed by ring-opening polymerization of an unsaturated condensed alicyclic compound or a derivative thereof.