Temporary stripe marker
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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Abstract
The present invention relates to aqueous paint suspensions containing a film-forming polymer. The invention also relates to aqueous aerosol paint compositions incorporating such suspensions. In particular, the invention relates to aqueous aerosol paint compositions suitable for temporary marking applications. The dried film resulting from application of such aerosol paint compositions is removable upon addition of water.
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Citations
8 Claims
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1. An aqueous paint suspension comprising:
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(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. - View Dependent Claims (2, 3, 4, 5)
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6. An aqueous aerosol paint comprising:
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(a) from about 65 to about 95 percent by weight of an aqueous paint suspension comprising; (i) from about 20 to about 30 percent by weight water; (ii) 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; (iii) 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; (iv) from about 0.05 to about 3 percent by weight of a fumed silica suspending agent; (v) from about 0.1 to about 3 percent by weight of a non-silicone defoaming agent; and (vi) 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; and (b) from about 5 to about 35 percent by weight of a C2 -C7 hydrocarbon propellant. - View Dependent Claims (7, 8)
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Specification