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Noise insulating member having low degree of water and oil absorbency

  • US 6,237,717 B1
  • Filed: 01/28/2000
  • Issued: 05/29/2001
  • Est. Priority Date: 01/28/1999
  • Status: Expired due to Fees
First Claim
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1. A noise insulating member having a low degree of water absorbency and a low degree of oil absorbency, said noise insulating member comprising:

  • a polyurethane foam obtained by reaction of an organic polyisocyanate component and a polyol component in the presence of a fluorine-containing surfactant, and having a cellular network having cells and communication holes which communicate with said cells and which have respective diameters each of which is not larger than 60 μ

    m.

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