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Coated substrate having a water swellable coating

  • US 6,287,679 B1
  • Filed: 01/22/1998
  • Issued: 09/11/2001
  • Est. Priority Date: 01/19/1996
  • Status: Expired due to Term
First Claim
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1. A coated substrate, comprising:

  • (a) a substrate having an exterior surface;

    (b) a water swellable semi-gel coating comprising a particulate superabsorbent polymer dispersed in a polyvinyl chloride plastisol, wherein the coating is applied to the exterior surface of the substrate for substantially blocking the penetration of water through the semi-gel coating.

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