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US 6,423,804 B1Granted
Ion-sensitive hard water dispersible polymers and applications therefor
AssigneeKimberly-Clark Worldwide, Inc.
InventorsYihua Chang, Pavneet S. Mumick, Frederick J. Lang
Life of this patent
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Abstract
The present invention is directed to ion-sensitive, hard water dispersible polymers. The present invention is also directed to a method of making ion-sensitive, hard water dispersible polymers and their applicability as binder compositions. The present invention is further directed to fiber-containing fabrics and webs comprising ion-sensitive, hard water dispersible binder compositions and their applicability in water dispersible personal care products.
Claims17
An ion-sensitive polymer, wherein the polymer is formed from:
- acrylic acid;
- AMPS or NaAMPS;
- butyl acrylate;
- and 2-ethylhexyl acrylate;
- further wherein the polymer is insoluble in a neutral salt solution containing at least about 0.3 weight percent salt, said salt comprising one or more monovalent or multivalent ions;
- and wherein the polymer is soluble in tap water containing one or more multivalent ions.
3 more elements
An ion-sensitive polymer formed from four monomers:
- acrylic acid, AMPS or NaAMPS, butyl acrylate, and 2-ethylhexyl acrylate;
- wherein the polymer is insoluble in a neutral salt solution containing at least about 0.3 weight percent salt, said salt comprising one or more monovalent or multivalent ions;
- and wherein the polymer is soluble in tap water containing from about 15 ppm to about 500 ppm of one or more multivalent ions.
Dependencies are inferred from the claim text.