Urethane polymer foam composites in sized particulate form with controlled release of agents and additives
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United States of America Patent
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Issued Date -
Nov 20, 2003
app pub date -
Apr 3, 2003
filing date -
Apr 2, 2002
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Abandoned
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Abstract
Granulated hydrophilic urethane polymer foam products with controlled release or contact of agents and additives, formed from the reaction product of an aqueous formulation comprising limited quantities of an absorbent polymer, an agent or additive from the group of detergents, soaps, abrasives, waxes, polishes, drugs, cosmetics, biologicals, volatiles, chemicals, water emulsions, water mixture with solid particles and optionally selective additives with adequate water and a predetermined ratio of hydrophilic urethane prepolymer to provide the polymerized solid. The agents and additives if any, are homogenously incorporated strands, fibers and intercellular structures of the matrix for the formed urethane polymer foam product to materially increase mass transfer between the agents and additives and a target in the effluent. The hydrophilic urethane polymer will allow intimate contact between agent/additive and effluent target.
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