Waxing sponge
First Claim
1. A hydrophilic flexible open-celled poly (urea/urethane) sponge containing uniformly distributed therethrough a readily releasable wax composition, said sponge being produced by mixing and reacting (a) an isocyanate capped prepolymer obtained by reaction of a polyoxyethylene polyol with a stoichiometric excess of an organic polyisocyanate with (b) an aqueous dispersion containing by weight of the prepolymer about 30 to 200% of water as substantially the sole diluent and, by weight of the dispersion, about 0.1 to 8% of a wax and about 2 to 12% of a nonionic polyoxyethylenated polyhydric alcohol surface active agent.
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Abstract
A hydrophilic flexible open-celled poly (urea/urethane) sponge derived from prepolymer produced by reaction of a polyoxyalkylene polyol with a stoichiometric excess of an organic polyisocyanate, said sponge containing uniformly distributed therethrough a readily releasable wax composition, and methods of making and using same for waxing surfaces.
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Citations
15 Claims
- 1. A hydrophilic flexible open-celled poly (urea/urethane) sponge containing uniformly distributed therethrough a readily releasable wax composition, said sponge being produced by mixing and reacting (a) an isocyanate capped prepolymer obtained by reaction of a polyoxyethylene polyol with a stoichiometric excess of an organic polyisocyanate with (b) an aqueous dispersion containing by weight of the prepolymer about 30 to 200% of water as substantially the sole diluent and, by weight of the dispersion, about 0.1 to 8% of a wax and about 2 to 12% of a nonionic polyoxyethylenated polyhydric alcohol surface active agent.
Specification