Fibrous elements comprising an acrylamide-based copolymer and fibrous structures employing same

Patent metadata

Field	Value
Publication number	US-10060052-B2
Application number	US-201414520497-A
Country	US
Kind code	B2
Filing date	Oct 22, 2014
Priority date	Oct 25, 2013
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

Fibrous elements, for example filaments, containing an acrylamide-based copolymer, fibrous structures employing such fibrous elements, and methods for making same are provided.

First claim

What is claimed is:

1. A spun filament comprising an interpenetrating network structure comprising a filament-forming polymer and an acrylamide-based copolymer comprising a polymer backbone that comprises two or more different monomeric units, at least one of which is an acrylamide monomeric unit and at least one of which is a monomeric unit selected from the group consisting of: pendant hydroxyl-containing monomeric units, pendant hydroxyl alkylether-containing monomeric units, pendant hydroxyl alkylester-containing monomeric units, pendant hydroxyl alkylamide-containing monomeric units, and mixtures thereof.

2. The spun filament according to claim 1 wherein the acrylamide monomeric unit has the following Formula I:

wherein R is independently selected from the group consisting of: H and C 1 -C 3 alkyl.

3. The spun filament according to claim 1 wherein the pendant hydroxyl-containing monomeric unit has the following Formula II:

wherein R is independently selected from the group consisting of: H and C 1 -C 3 alkyl, n is from 1-10, m is from 0 to 4, p is from 0 to 10, q is from 0 to 10, and r is from 1-4.

4. The spun filament according to claim 1 wherein the pendant hydroxyl-containing monomeric unit has the following Formula III:

wherein R is independently selected from the group consisting of: H and C 1 -C 3 alkyl, n is from 1-10, q is from 0 to 10, and r is from 1-4.

5. The spun filament according to claim 1 wherein the pendant hydroxyl alkylether-containing monomeric unit has the following Formula IV:

wherein R is independently selected from the group consisting of: H and C 1 -C 3 alkyl, n is from 1-10, and R 2 is a linear or branched, hydroxyl-containing C 1 -C 12 hydrocarbon.

6. The spun filament according to claim 1 wherein the pendant hydroxyl alkylester-containing monomeric unit has the following Formula V:

wherein R is independently selected from the group consisting of: H and C 1 -C 3 alkyl, n is from 1-10.

7. The spun filament according to claim 1 wherein the pendant hydroxyl alkylamide-containing monomeric unit has the following Formula VI:

wherein R is independently selected from the group consisting of: H and C 1 -C 3 alkyl, n is from 1-10.

8. The spun filament according to claim 1 wherein the filament comprises from about 0.001% to about 10% by weight of the filament of the acrylamide-based copolymer.

9. The spun filament according to claim 1 wherein the filament-forming polymer comprises a hydroxyl polymer.

10. The spun filament according to claim 9 wherein the hydroxyl polymer comprises a polysaccharide.

11. The spun filament according to claim 10 wherein the polysaccharide is selected from the group consisting of: starch, starch derivatives, starch copolymers, chitosan, chitosan derivatives, chitosan copolymers, cellulose, cellulose derivatives, cellulose derivatives, cellulose copolymers, hemicelluloses, hemicelluloses derivatives, hemicelluloses copolymers, and mixtures thereof.

12. The spun filament according to claim 1 wherein the spun filament exhibits an Elongation at Rupture of greater than 55% as measured according to the Elongation at Rupture Test Method.

13. A fibrous structure comprising a plurality of spun filaments according to claim 1 .

14. A fibrous structure comprising a plurality of spun filaments according to claim 12 .

15. A fibrous structure comprising a plurality of spun filaments according to claim 1 wherein the fibrous structure exhibits a Fail TEA of greater than 37 g/in as measured according to the Tensile Test Method.

16. The fibrous structure according to claim 15 wherein the filament-forming polymer comprises a hydroxyl polymer.

17. A single- or multi-ply sanitary tissue product comprising a fibrous structure according to claim 15 .

18. A method for making a spun filament according to claim 12 wherein the method comprises the steps of:
a. providing a filament-forming composition comprising said filament-forming polymer and said acrylamide-based copolymer comprising two or more different monomeric units, at least one of which is an acrylamide monomeric unit and at least one of which is a monomeric unit selected from the group consisting of: pendant hydroxyl-containing monomeric units, pendant hydroxyl alkylether-containing monomeric units, pendant hydroxyl alkylester-containing monomeric units, pendant hydroxyl alkylamide-containing monomeric units, and mixtures thereof; and
b. producing a spun filament from the filament-forming composition.

Assignees

• Procter & Gamble

Inventors

• Mckee Matthew Gary
• Gordon Gregory Charles
• Kleinwaechter Joerg
• Sivik Mark Robert
• Trokhan Paul Dennis

Classifications

• C08B37/0057

  beta-D-Xylans, i.e. xylosaccharide, e.g. arabinoxylan, arabinofuronan, pentosans; (beta-1,3)(beta-1,4)-D-Xylans, e.g. rhodymenans; Hemicellulose; Derivatives thereof · CPC title

• D21H27/002

  Tissue paper; Absorbent paper (D21H21/22, D21H27/02, D21H27/20 take precedence; toilet paper A47K10/00; absorbent pads for physiological fluids A61L15/16; making on paper-making machines D21F11/00) · CPC title

• D21H17/375

  Poly(meth)acrylamide · CPC title

• C08B31/003

  Crosslinking of starch · CPC title

• D21H27/30

  Multi-ply (for surface covering D21H27/18; making on paper-making machines D21F9/00, D21F11/00) · CPC title