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Particle-filled microporous materials

  • US 5,130,342 A
  • Filed: 07/25/1990
  • Issued: 07/14/1992
  • Est. Priority Date: 10/14/1988
  • Status: Expired due to Term
First Claim
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1. A microporous particulate-filled thermoplastic polymeric article which comprises a thermoplastic polymeric structure having a plurality of interconnected passageways to provide a network of communicating pores, the microporous structure containing discrete submicron or low micron-sized particulate filler, the particulate filler being substantially non-agglomerated.

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