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US 9,279,215 B2Granted
Formulation coated self-cleaning wool
AssigneesThe Hong Kong Polytechnic University, Australian Wool Innovation Limited
InventorsWalid Abdelhamid Daoud, Sze Kar Leung, Wing Sze Tung, Hao Zhong John Xin, Ka Leung Kevin Cheuk, Xiaowen Wang, Yee Yee Kong, Kaihong Qi
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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.
Claims10
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.
4 more elements
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.
6 more elements
Dependencies are inferred from the claim text.