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Temporary stripe marker

  • US 6,077,898 A
  • Filed: 04/13/1999
  • Issued: 06/20/2000
  • Est. Priority Date: 01/12/1998
  • Status: Expired due to Term
First Claim
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1. An aqueous paint suspension comprising:

  • (a) from about 20 to about 30 percent by weight water;

    (b) from about 5 to about 15 percent by weight of a polyvinylpyrrolidone/vinyl acetate copolymer, the polyvinylpyrrolidone/vinyl acetate copolymer containing from about 30 to about 70 percent by weight polyvinylpyrrolidone and from about 30 to about 70 percent by weight vinyl acetate;

    (c) from about 20 to about 40 percent by weight of a dispersed substance selected from the group consisting of filler and pigment, and mixtures thereof;

    (d) from about 0.05 to about 3 percent by weight of a fumed silica suspending agent;

    (e) from about 0.1 to about 3 percent by weight of a non-silicone defoaming agent; and

    (f) from about 0.5 to about 5 percent by weight of a dispersing agent, the dispersing agent comprising a block copolymer having an affinity for pigment;

    wherein the dispersed substance is not encapsulated within the polyvinylpyrrolidone/vinyl acetate coploymer.

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