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Therapeutic abrasive sponge

  • US 7,060,119 B1
  • Filed: 07/02/2004
  • Issued: 06/13/2006
  • Est. Priority Date: 05/14/2003
  • Status: Active Grant
First Claim
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1. The process of manufacture of a therapeutic abrasive sponge in which a polyurethane foam sponge is impregnated with particulate abrasive material comprising the steps:

  • a. forming a pre-polymer by reacting a polyoxyalkylene polyol with a stoichiometric excess of an organic polyioscyanate,b. mixing particulate abrasive material with the pre-polymer,c. mixing the pre-polymer particulate abrasive material mixture with 30 to 200 percent by weight of the pre-polymer of water,d. curing the polyurethane foam sponge material impregnated with particulate abrasive material, ande. shaping the polyurethane foam sponge material impregnated with particulate abrasive material into a suitable shape.

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