Aqueous Nonwoven Binder and Treated Nonwoven Prepared Therefrom
OwnerKatherine Sue Riceinventor
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Abstract
An aqueous nonwoven binder including an emulsion polymer including, as copolymerized units: from 0.1% to 5% monoethylenically-unsaturated dicarboxylic acid monomer by weight, based on the weight of the emulsion polymer; and from 12% to 22% monoethylenically-unsaturated monoacid monomer by weight, based on the weight of the emulsion polymer wherein the calculated Tg of the emulsion polymer is from −20° C. to 30° C. that is capable of providing a useful balance of wet strength and dispersibility to a treated nonwoven substrate is provided.
Claims6
An aqueous nonwoven binder comprising an emulsion polymer comprising, as copolymerized units:
- from 0.1% to 5% monoethylenically-unsaturated dicarboxylic acid monomer by weight, based on the weight of said emulsion polymer;
- and
- from 12% to 22% monoethylenically-unsaturated monoacid monomer by weight, based on the weight of said emulsion polymer
- wherein the calculated Tg of said emulsion polymer is from −20° C. to 30° C.
A method for forming a treated nonwoven substrate comprising:
- a) forming an aqueous nonwoven binder comprising an emulsion polymer comprising, as copolymerized units:
- from 0.1% to 5% monoethylenically-unsaturated dicarboxylic acid monomer by weight, based on the weight of said emulsion polymer;
- and
- from 12% to 22% monoethylenically-unsaturated monoacid acid monomer by weight, based on the weight of said emulsion polymer
- wherein the Tg of said emulsion polymer is from −20° C. to 30° C.;
- b) contacting a nonwoven substrate with said aqueous composition;
- and
- c) heating said contacted nonwoven to a temperature of from 120° C. to 220° C.
Dependencies are inferred from the claim text.