Liquid absorbing sheet and nonaqueous electrolyte battery pack
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United States of America Patent
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Mar 31, 2009
Grant Date -
Aug 3, 2006
app pub date -
Apr 1, 2004
filing date -
May 30, 2003
priority date (Note) -
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Abstract
A liquid absorbing sheet has a liquid-absorbing resin layer that can effectively absorb the nonaqueous electrolyte solution used in nonaqueous electrolyte secondary cells that make nonaqueous electrolyte battery packs (in particular, lithium ion-based nonaqueous secondary battery packs). The liquid-absorbing resin layer is obtained by irradiating a particular monomer composition with UV rays or other energy rays to polymerize the monomer composition. The monomer composition contains a monofunctional monomer component (A) having a polyethylene glycol acrylate monomer and an amide bond-containing acrylic monomer; and a polyfunctional monomer component (B).
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