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Liquid absorbing sheet and nonaqueous electrolyte battery pack

  • US 7,510,767 B2
  • Filed: 04/01/2004
  • Issued: 03/31/2009
  • Est. Priority Date: 05/30/2003
  • Status: Active Grant
First Claim
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1. A nonaqueous electrolyte battery pack comprisinga nonaqueous electrolyte battery cell,a circuit board,a nonaqueous electrolyte-absorbing element for absorbing a nonaqueous electrolyte solution in the event of electrolyte leakage from the nonaqueous electrolyte battery cell, anda battery case encasing the battery cell, the circuit board and the nonaqueous electrolyte-absorbing element, wherein the nonaqueous electrolyte-absorbing element is formed of a liquid absorbing sheet for absorbing a nonaqueous electrolyte solution, comprising:

  • a liquid-absorbing resin layer capable of absorbing a nonaqueous electrolyte solution and shows adhesion, wherein the liquid-absorbing resin layer comprises a polymer of a monomer composition, the monomer composition containing;

    a monofunctional monomer component (A) comprising a polyethylene glycol acrylate monomer and an amide bond-containing acrylic monomer; and

    a polyfunctional monomer component (B).

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