Surface treating articles and methods of making same
AssigneeMinnesota Mining and Manufacturing Company
InventorsSubramanian Krishnan, Eugene J. Miller, Mary B. Donovan, Ramona M. Janochoski, Caroline Couvelard
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Abstract
Surface treating articles having varying degree of smear-resistance and their methods of manufacture are presented. One preferred article is characterized by an organic matrix substantially engulfed by a novel, tough, adherent elastomeric resinous binder system comprising a reaction product of either selected from (1) a polyurethane prepolymer with an amine curative, (2) a polyurethane prepolymer emulsion with an epoxy-functional material and an amine functional material, and (3) a polyurethane polymer emulsion with an epoxy-functional material and an amine-functional material in an aqueous system.
Claims35
A surface treating article comprising an organic matrix substantially engulfed by a binder, the binder comprising:
- a reaction product of an aqueous binder precursor emulsion comprising a plurality of linear isocyanate-terminated polyurethane prepolymers and an amine-functional material having an average amine functionality of at least 2, the emulsion further including an ingredient selected from the group consisting of
- i) a sufficient amount of a thickening agent;
- and
- ii) a combination of a compatible smear-reducing additive, an organic solvent, and a surfactant.
A surface treating article comprising an open, lofty, three-dimensional nonwoven web comprised of a plurality of organic polymeric fibers, at least a portion of said fibers bound together at points where they contact by a first binder, the first binder comprising:
- a reaction product of an aqueous binder precursor emulsion comprising a plurality of linear isocyanate-terminated polyurethane prepolymers and an amine-functional material having an average amine functionality of at least 2, the emulsion further including an ingredient selected from the group consisting of
- i) a sufficient amount of a thickening agent;
- and
- ii) a combination of a compatible smear-reducing additive, an organic solvent, and a surfactant.
Dependencies are inferred from the claim text.