Absorbent fibrous structures comprising a polymeric fluid comprising a soil adsorbing agent

Patent metadata

Field	Value
Publication number	US-9492808-B2
Application number	US-201514862185-A
Country	US
Kind code	B2
Filing date	Sep 23, 2015
Priority date	Sep 23, 2014
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

Absorbent fibrous structure containing a polymeric fluid containing a polymer, including for example a copolymer and/or terpolymer, soil adsorbing agent, and absorbent fibrous structures containing such polymer soil adsorbing agents, and methods for making same.

First claim

What is claimed is:

1. An absorbent fibrous structure comprising a polymeric fluid comprising a polymer soil adsorbing agent comprising two or more different monomeric units, wherein the polymer soil adsorbing agent exhibits a weight average molecular weight of from about 50,000 g/mol to about 6,000,000 g/mol as measured according to the Molecular Weight Test Method and a charge density of greater than 0 meq/g as measured according to the Charge Density Test Method.

2. The absorbent fibrous structure according to claim 1 wherein the absorbent fibrous structure exhibits an average Soil Adsorption Value of about 90 mg soil/g absorbent fibrous structure or greater as measured according to the Soil Adsorption Test Method.

3. The absorbent fibrous structure according to claim 1 wherein the absorbent fibrous structure comprises a plurality of pulp fibers.

4. The absorbent fibrous structure according to claim 3 wherein the absorbent fibrous structure comprises a sanitary tissue product.

5. The absorbent fibrous structure according to claim 4 wherein the sanitary tissue product comprises a paper towel.

6. The absorbent fibrous structure according to claim 1 wherein the absorbent fibrous structure comprises a cleaning pad.

7. The absorbent fibrous structure according to claim 1 wherein the absorbent fibrous structure exhibits a moisture level of less than 30% as measured according to the Moisture Content Test Method.

8. The absorbent fibrous structure according to claim 1 wherein the absorbent fibrous structure exhibits an average Mirror Cleaning Densitometer Value of −0.5 or greater as measured according to the Mirror Cleaning Test Method.

9. The absorbent fibrous structure according to claim 1 wherein at least one of the monomeric units is derived from an acrylamide compound.

10. The absorbent fibrous structure according to claim 9 wherein at least one of the monomeric units is derived from a methylene bis acrylamide compound.

11. The absorbent fibrous structure according to claim 10 wherein the polymer soil adsorbing agent comprises less than 200 ppm of the monomeric unit derived from the methylene bis acrylamide compound.

12. The absorbent fibrous structure according to claim 1 wherein the polymer soil adsorbing agent comprises a monomeric unit derived from an acrylamide compound and a monomeric unit derived from a hydroxyalkylacrylate compound.

13. The absorbent fibrous structure according to claim 12 wherein the hydroxyalkylacrylate compound is hydroxypropylacrylate.

14. The absorbent fibrous structure according to claim 12 wherein the polymer soil adsorbing agent comprises less than 50% of the monomeric unit derived from the hydroxyalkylacrylate compound.

15. The absorbent fibrous structure according to claim 1 wherein the polymer soil adsorbing agent is present in the absorbent fibrous structure at a level of from about 0.005% to about 5% by weight of the absorbent fibrous structure.

16. The absorbent fibrous structure according to claim 1 wherein the polymer soil adsorbing agent is present on the fibrous structure in a pattern.

17. The absorbent fibrous structure according to claim 1 wherein the polymeric fluid is in the form of an aqueous solution.

18. The absorbent fibrous structure according to claim 1 wherein the polymeric fluid is in the form of a dispersion or emulsion.

19. The absorbent fibrous structure according to claim 1 wherein the polymeric fluid is in the form of a powder.

20. A method for making an absorbent fibrous structure according to claim 1 wherein the method comprises the step of contacting an absorbent fibrous structure with a polymeric fluid comprising a polymer soil adsorbing agent comprising two or more different monomeric units, wherein the polymer soil adsorbing agent exhibits a weight average molecular weight of from about 50,000 g/mol to about 6,000,000 g/mol as measured according to the Molecular Weight Test Method and a charge density of greater than 0 meq/g as measured according to the Charge Density Test Method.

Assignees

• Procter & Gamble

Inventors

• Eylem Cahit
• Prodoehl Michael Scott
• Neal Charles William
• Sheehan Jeffrey Glen

Classifications

• B01J20/28023

  Fibres or filaments (fibres or filaments in the form of membranes B01J20/28038; B01J20/28007 takes precedence) · CPC title

• A61Q19/10

  Washing or bathing preparations · CPC title

• B01J20/3287

  Layers in the form of a liquid · CPC title

• D21H21/22

  Agents rendering paper porous, absorbent or bulky · CPC title

• C11D3/3769

  (Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines · CPC title