Non-fluorinated water-based superhydrophobic compositions

Patent metadata

Field	Value
Publication number	US-10533096-B2
Application number	US-201615551634-A
Country	US
Kind code	B2
Filing date	Feb 25, 2016
Priority date	Feb 27, 2015
Publication date	Jan 14, 2020
Grant date	Jan 14, 2020

Abstract

A superhydrophobic non-fluorinated composition includes a hydrophobic matrix component free of fluorine, a hydrophilic filler particles, wherein the filler particles are metal oxide nanoparticles, and water, wherein the hydrophobic component is in an aqueous dispersion. Also, a superhydrophobic non-fluorinated composition includes a hydrophobic polymer free of fluorine, a titanium dioxide nanoparticle filler particle, and water. In addition, a superhydrophobic non-fluorinated composition includes a hydrophobic polymer free of fluorine, wherein the hydrophobic polymer includes a polyolefin, titanium dioxide nanoparticles as filler, wherein the titanium dioxide nanoparticles are rutile titanium dioxide, anatase titanium dioxide, or a mixture of rutile and anatase titanium dioxide, and water.

First claim

What is claimed is:

1. A superhydrophobic non-fluorinated composition consisting essentially of:
a hydrophobic matrix component free of fluorine;
hydrophilic filler particles, wherein the hydrophilic filler particles are nanoparticles comprising titanium dioxide, rutile titanium dioxide, anatase titanium dioxide, or a mixture of rutile and anatase titanium dioxide or a mixed-phase titanium dioxide; and
water, wherein the hydrophobic component is in an aqueous dispersion.

2. The superhydrophobic composition of claim 1 , wherein the mixed-phase titanium dioxide has an average particle size of 21 nm.

3. The superhydrophobic composition of claim 1 , wherein the filler particle is configured to form a protective bond with the hydrophobic component.

4. The superhydrophobic composition of claim 1 , wherein the ratio of the filler particle to the hydrophobic component is at least 1.

5. The superhydrophobic composition of claim 1 , wherein the hydrophobic component is a polymer.

6. The superhydrophobic composition of claim 1 , wherein the hydrophobic component includes a polyolefin.

7. The superhydrophobic composition of claim 1 , wherein the hydrophobic component includes a co-polymer of olefin and acrylic acid.

8. The superhydrophobic composition of claim 1 , wherein the composition is free of volatile organic compounds.

9. The superhydrophobic composition of claim 1 , wherein the composition is configured to be dispersed by a spray.

10. A superhydrophobic non-fluorinated composition comprising:
a hydrophobic polymer free of fluorine;
a titanium dioxide nanoparticle filler particle; and
water.

11. The superhydrophobic composition of claim 10 , wherein the hydrophobic polymer includes a polyolefin.

12. The superhydrophobic composition of claim 10 , wherein the titanium dioxide nanoparticle is rutile titanium dioxide, anatase titanium dioxide, or a mixture of rutile and anatase titanium dioxide.

13. The superhydrophobic composition of claim 10 , wherein the titanium dioxide nanoparticle is mixed-phase titanium dioxide.

14. The superhydrophobic composition of claim 13 , wherein the mixed-phase titanium dioxide has an average particle size of 21 nm.

15. A superhydrophobic non-fluorinated composition comprising:
a hydrophobic polymer free of fluorine, wherein the hydrophobic polymer includes a polyolefin;
titanium dioxide nanoparticles as filler, wherein the titanium dioxide nanoparticles are rutile titanium dioxide, anatase titanium dioxide, or a mixture of rutile and anatase titanium dioxide; and
water.

16. The superhydrophobic composition of claim 15 , wherein the titanium dioxide nanoparticle is mixed-phase titanium dioxide.

17. The superhydrophobic composition of claim 16 , wherein the mixed-phase titanium dioxide has an average particle size of 21 nm.

Assignees

• Kimberly Clark Co
• Univ Illinois

Inventors

• Qin Jian
• Waldroup Donald Eugene
• Calewarts Deborah Joy
• Megaridis Constantine Michael
• Mates Joseph Edward

Classifications

• C09D5/1681 Primary

  Antifouling coatings characterised by surface structure, e.g. for roughness effect giving superhydrophobic coatings or Lotus effect · CPC title

• C08K3/22

  of metals · CPC title

• C08K3/013

  Fillers, pigments or reinforcing additives · CPC title

• C09D7/67

  Particle size smaller than 100 nm · CPC title

• C09D123/08

  Copolymers of ethene (C09D123/16 takes precedence) · CPC title