Separator for organic electrolyte battery, process for producing the same and organic electrolyte battery including the separator
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United States of America Patent
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Issued Date -
Jul 13, 2006
app pub date -
Oct 23, 2003
filing date -
Oct 24, 2002
priority date (Note) -
Abandoned
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Abstract
An organic electrolyte battery separator is composed of a nonwoven comprising a heat-and-humidity gelling resin capable of gelling by heating in the presence of moisture and another fiber. The other fiber is fixed with a gel material obtained by causing the heat-and-humidity gelling resin to gel under heat and humidity. The nonwoven has a mean flow pore diameter of 0.3 .mu.m to 5 .mu.m and a bubble point pore diameter of 3 .mu.m to 20 .mu.m as measured in accordance with ASTM F 316 86. Thereby, the other fiber constituting the nonwoven can be fixed with the heat-and-humidity gelling resin, thereby making it possible to obtain a desired mean flow pore diameter and bubble point pore diameter. As a result, an organic electrolyte battery having a high level of safety, less occurrence of a short circuit, high battery characteristics is provided.
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