INORGANIC WATERBORNE COATING AGENT AND ITS AQUEOUS SOLUTION

• US 20090050018A1
• Filed: 06/18/2008
• Published: 02/26/2009
• Est. Priority Date: 06/21/2007
• Status: Active Grant

• Current Assignee: Trade Service Corp. (Trimble Inc.)
• Original Assignee: Trade Service Corp. (Trimble Inc.)
• Inventors: Kishimoto, Katsumi
• Granted Patent: US 8,241,416 B2
• Time in Patent Office: Days
• US Class Current: 106/286.800
• CPC Class Codes: C09D 1/00 Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
• CPC Class Codes: C09D 5/1656 characterised by the film-forming substance C09D5/1637 takes precedence

Abstract

To provide an inorganic waterborne coating agent and its aqueous solution: wherein, with the surface of the base material highly-hydrophilizated, the contaminant such as oil-based contaminant and inorganic dust adhered onto the surface of the base material can be removed easily with water, and at the same time, the antistatic effect can be achieved due to its dust-repelling property; which can be applied by anyone (non-skilled) with ease without considering the base material being organic or inorganic, compared with conventional coating agents, such as photocatalyst and polysilazane-based glass coating agent that have limited range of use; and which has little limit in conditions of use, and is inexpensive and applicable to any places, thereby securing the original goal of antifouling property. To provide an inorganic waterborne coating agent comprising: alkaline colloidal silica, a sodium phosphate compound and a potassium phosphate mixture, and boric acid.

Claims

1. :

An inorganic waterborne coating agent to be applied onto the surface of an organic or inorganic base material, said inorganic waterborne coating agent including at least alkaline colloidal silica including water, elemental substances or a mixture of a sodium phosphate compound and/or a potassium phosphate compound, and boric acid.

2. :

An inorganic waterborne coating agent according to claim 1, wherein the blending level of the composition is adjusted so that the pH level is between pH 5 and pH 9, and more desirably between pH 6 and pH 8.

5. :

An inorganic waterborne coating agent according to claim 1, wherein the alkaline colloidal silica including water is colloidal silica, with silica particles having a single particle size of the range between 3 and 100 nm, or with a mixture of silica of different particle sizes, dispersed in water and stabilized by sodium dioxide.

7. :

An inorganic waterborne coating agent according to claim 2, wherein the alkaline colloidal silica including water is colloidal silica, with silica particles having a single particle size of the range between 3 and 100 nm, or with a mixture of silica of different particle sizes, dispersed in water and stabilized by sodium dioxide.

3. :

An inorganic waterborne coating agent aqueous solution, wherein the inorganic waterborne coating agent is for being applied onto the surface of an organic or inorganic base material, dissolved in water, and includes at least alkaline colloidal silica including water, elemental substances or a mixture of a sodium phosphate compound and/or a potassium phosphate compound, and boric acid.

4. :

An inorganic waterborne coating agent aqueous solution according to claim 3, wherein the weight ratio of the solid content excepting water in the inorganic waterborne coating agent aqueous solution to the entire inorganic waterborne coating agent aqueous solution is from 0.1% to 25%, and more desirably, from 0.3% to 8%.

6. :

An inorganic waterborne coating agent aqueous solution according to claim 3, wherein the alkaline colloidal silica including water is colloidal silica, with silica particles having a single particle size of the range between 3 and 100 nm, or with a mixture of silica of different particle sizes, dispersed in water and stabilized by sodium dioxide.

8. :

An inorganic waterborne coating agent aqueous solution according to claim 4, wherein the alkaline colloidal silica including water is colloidal silica, with silica particles having a single particle size of the range between 3 and 100 nm, or with a mixture of silica of different particle sizes, dispersed in water and stabilized by sodium dioxide.