Low-fluorine compositions with cellulose for generating superhydrophobic surfaces

Patent metadata

Field	Value
Publication number	US-10865317-B2
Application number	US-201715692033-A
Country	US
Kind code	B2
Filing date	Aug 31, 2017
Priority date	Aug 31, 2017
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A composition configured to create a superhydrophobic surface includes a fluorinated hydrophobic component dispersible in an aqueous dispersion; cellulosic elements of a size ranging from 100 nm to 100 μm; and water. The hydrophobic component is selected from the group consisting of fluorinated polymers, perfluorinated polymers, and mixtures thereof; and the cellulosic elements are micro- and nano-fibrillated cellulose. A disposable absorbent article includes a substrate having a surface, the surface including a composition including a fluorinated hydrophobic component dispersible in an aqueous dispersion; cellulosic elements of a size ranging from 100 nm to 100 μm; and water, wherein the surface exhibits a contact angle greater than 150 degrees.

First claim

What is claimed is:

1. A composition configured to create a superhydrophobic surface, the composition comprising:
a fluorinated hydrophobic component dispersible in an aqueous dispersion;
cellulosic elements of a size ranging from 100 nm to 100 μm; and
water.

2. The composition of claim 1 , wherein the cellulosic elements are particles and/or fibers.

3. The composition of claim 1 , wherein the composition is configured to be applied to a surface such that the surface exhibits a contact angle greater than 150 degrees.

4. The composition of claim 1 , wherein the composition is configured to be applied to a surface such that the surface exhibits a roll off angle less than 10 degrees.

5. The composition of claim 1 , wherein the surface exhibits contact angle hysteresis less than 20 degrees.

6. The composition of claim 1 , wherein the fluorinated hydrophobic component is a fluorinated ethylene-acrylic acid co-polymer.

7. The composition of claim 1 , wherein the cellulosic elements are micro- and nano-fibrillated cellulose.

8. The composition of claim 1 , wherein the hydrophobic component is selected from the group consisting of fluorinated polymers, perfluorinated polymers, and mixtures thereof.

9. The composition of claim 1 , wherein the hydrophobic component and cellulosic elements are present in an amount of from about 0.1% to about 5.0%, by weight of the dispersion.

10. The composition of claim 1 , wherein the hydrophobic component and cellulosic elements are present in an amount of from about 1.0% to about 3.0%, by weight of the dispersion.

11. The composition of claim 1 , wherein the ratio of the hydrophobic component to the cellulosic elements is from about 1:4 to about 4:1.

12. The composition of claim 1 , wherein the fluorinated hydrophobic component is a plurality of hydrophobic components.

13. The composition of claim 1 , the composition further comprising a stabilizing agent.

14. The composition of claim 1 , the composition further comprising a filler or a binder.

15. A composition configured to create a superhydrophobic surface, the composition comprising:
a fluorinated hydrophobic component dispersible in an aqueous dispersion, wherein the hydrophobic component is selected from the group consisting of fluorinated polymers, perfluorinated polymers, and mixtures thereof;
cellulosic elements of a size ranging from 100 nm to 100 μm, wherein the cellulosic elements are micro- and nano-fibrillated cellulose; and
water.

16. The composition of claim 15 , wherein the fluorinated hydrophobic component is a fluorinated ethylene-acrylic acid co-polymer.

17. The composition of claim 15 , wherein the composition is configured to be applied to a surface such that the surface exhibits a contact angle greater than 150 degrees.

18. A disposable absorbent article comprising a substrate having a surface, the surface including a composition comprising a fluorinated hydrophobic component dispersible in an aqueous dispersion; cellulosic elements of a size ranging from 100 nm to 100 μm; and water, wherein the surface exhibits a contact angle greater than 150 degrees.

19. The disposable absorbent article of claim 17 , wherein the fluorinated hydrophobic component is a fluorinated ethylene-acrylic acid co-polymer.

20. The disposable absorbent article of claim 17 , wherein the cellulosic elements are micro- and nano-fibrillated cellulose.

Assignees

• Kimberly Clark Co
• Board Of Trustees Of The Univ Of Illinois

Inventors

• Megaridis Constantine Michael
• Morrissette Jared
• Carroll Patrick
• Bayer Ilker S
• Qin Jian
• Waldroup Donald E

Classifications

• B01J20/3276

  Copolymers · CPC title

• B01J20/3272

  Polymers obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds · CPC title

• B01J20/264

  derived from different types of monomers, e.g. linear or branched copolymers, block copolymers, graft copolymers · CPC title

• C09D123/28

  by reaction with halogens or compounds containing halogen (C09D123/32 takes precedence) · CPC title

• C08L1/02

  Cellulose; Modified cellulose · CPC title