Formulation coated self-cleaning wool

Patent metadata

Field	Value
Publication number	US-9279215-B2
Application number	US-201113270404-A
Country	US
Kind code	B2
Filing date	Oct 11, 2011
Priority date	Apr 2, 2007
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

The present invention relates to methods of making articles, and systems for providing wool articles having self-cleaning properties. The self-cleaning properties are brought about coating the wool articles with a photocatalyst formulation. The formulation contains titanium compounds, stabilizers, catalysts, and water.

First claim

The invention claimed is:

1. A formulation coated wool article, comprising
a wool article; and
a photocatalyst formulation containing
a titanium compound in an amount of up to 30 v/v, wherein the titanium compound is selected from the group consisting of titanium tetraisopropoxide, titanium isopropoxide, titanium ethoxide, titanium isobutoxide, and titanium methoxide,
one or more catalysts as a solution in a 30% up to 70% concentration in an amount of 0.5% to 2.0% v/v, wherein the catalyst is selected from perchloric acid, hydroiodic acid, hydrobromic acid, hydrochloric acid, and nitric acid for efficient reaction of the formulation,
one or more stabilizers in an amount of 3% to 7% v/v, configured to enhance the crystallization of the one or more catalysts wherein the stabilizer is selected from acetic acid and citric acid, and
water in an amount of 60% to 90% v/v.

2. The formulation coated wool article of claim 1 , wherein said wool article is a worsted wool type, woolen wool type, or wool fiber.

3. The formulation coated wool article of claim 2 , wherein said worsted type is selected from the group consisting of cashmere, mountain longwood, clown, low crossbred, medium crossbred, fire crossbred, strong merino, average merino, and fine merino.

4. The formulation of claim 2 , wherein said woolen type is selected from the group consisting of yarn, cloth, and blended yarns having wool and synthetic materials.

5. The formulation coated wool article of claim 1 , wherein said wool article further comprises stains.

6. A system for self-cleaning a formulation coated wool article, comprising
a light source;
a wool article coated with a photocatalyst formulation, wherein said photocatalyst formulation comprises,
a titanium compound in an amount of up to 30% v/v, wherein the titanium compound is selected from the group consisting of titanium tetraisopropoxide, titanium isopropoxide, titanium ethoxide, titanium isobutoxide, and titanium methoxide;
a catalyst as a solution in a 30% to 70% concentration in an amount of 0.5% to 2.0% v/v, wherein the catalyst is selected from perchloric acid, hydroiodic acid, hydrobromic acid, hydrochloric acid, sulfuric acid, and nitric acid;
a stabilizer in an amount of 3% to 7% v/v, wherein the stabilizer is selected from acetic acid and citric acid; and
water in an amount of 60% to 90% v/v; and
an environment.

7. The system of claim 6 , wherein said light source is selected from the group consisting of the sun, ultraviolet light, halogen light, and indoor lighting.

8. The system of claim 6 , wherein said light source provides rays with wavelengths of 220 to 500 nm.

9. The system of claim 6 , wherein said light source provides rays exhibiting intensities of from 0.1 pW/cm2 to 100 mW/cm2.

10. The system of claim 9 , wherein said light source exhibit irradiances of from 45 mW/cm2 to 95 mW/cm2.

Assignees

• Daoud Walid Abdelhamid
• Leung Sze Kar
• Tung Wing Sze
• Xin Hao Zhong John
• Cheuk Ka Leung Kevin
• Wang Xiaowen
• Kong Yee Yee
• Qi Kaihong
• Univ Hong Kong Polytechnic
• Australian Wool Innovation Ltd

Inventors

• Daoud Walid Abdelhamid
• Leung Sze Kar
• Tung Wing Sze
• Xin Hao Zhong John
• Cheuk Ka Leung Kevin
• Wang Xiaowen
• Kong Yee Yee
• Qi Kaihong

Classifications

• D06M13/325

  Amines · CPC title

• D06M11/55

  with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts · CPC title

• D06M11/20

  Halides of elements of Groups 4 or 14 of the Periodic Table, e.g. zirconyl chloride · CPC title

• D06M11/64

  with nitrogen oxides; with oxyacids of nitrogen or their salts (with pernitric acids or their salts D06M11/50) · CPC title

• Y10T428/2933

  Coated or with bond, impregnation or core · CPC title