Water-based paint composition

Patent metadata

Field	Value
Publication number	US-11613660-B2
Application number	US-202016825257-A
Country	US
Kind code	B2
Filing date	Mar 20, 2020
Priority date	Mar 22, 2019
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

A water-based paint composition has the ability to decompose ozone and includes a manganese oxide-based catalyst, an activated carbon, a polyacrylate-based dispersant, a water-soluble resin, a pH adjuster, and a water-based solvent.

First claim

The invention claimed is:

1. A water-based paint composition, comprising:
a manganese oxide-based catalyst;
an activated carbon;
a polyacrylate-based dispersant;
a water-soluble resin;
a pH adjuster; and
a water-based solvent.

2. The composition according to claim 1 , wherein
the manganese oxide-based catalyst is a manganese dioxide-based catalyst.

3. The composition according to claim 1 or 2 , wherein
the manganese oxide-based catalyst and the activated carbon are present in a ratio having a range of 20:80 to 80:20.

4. The composition according to claim 1 , wherein
the manganese oxide-based catalyst and the activated carbon are present in a range of 60 to 90% by mass in total to total solid contents.

5. The composition according to claim 1 , wherein
the polyacrylate-based dispersant has a weight average molecular weight in a range of 5000 to 30000, acid value in a range of 1 to 50, and hydrogen-ion exponent (pH) in a range of 4 to 9.

6. The composition according to claim 1 , wherein
the polyacrylate-based dispersant is present in a range of 1.5 to 75 parts by mass per hundred parts by total weight of the manganese oxide-based catalyst and the activated carbon.

7. The composition according to claim 1 , wherein
the manganese oxide-based catalyst has a maximum particle diameter (Dmax) of 20 μm or less determined by grind gauge, and
the activated carbon has a maximum particle diameter (Dmax) of 20 μm or less determined by the grind gauge.

8. The composition according to claim 1 , wherein
the manganese oxide-based catalyst has a 90% diameter (D90) of 10 μm or less determined by laser diffraction analysis, and
the activated carbon has a 90% diameter (D90) of 10 μm or less determined by the laser diffraction analysis.

9. The composition according to claim 1 , wherein
the water-soluble resin is an acrylic resin or a polypropylene resin.

Assignees

• Aisin Kako Kk
• Toyota Motor Co Ltd

Inventors

• Takahira Takayoshi
• Tanaka Toru
• Iwata Yasunari

Classifications

• B01J35/40

  characterised by dimensions, e.g. grain size (in a colloidal state B01J35/23; crystallite size B01J35/77) · CPC title

• Y02A50/20

  Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters · CPC title

• C08K2003/2262

  of manganese · CPC title

• C09D7/61 Primary

  inorganic · CPC title

• C08K3/04

  Carbon · CPC title