Water-based paint composition

Patent metadata

Field	Value
Publication number	US-11905437-B2
Application number	US-202318110482-A
Country	US
Kind code	B2
Filing date	Feb 16, 2023
Priority date	Mar 22, 2019
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

A water-based paint composition has performance to decompose ozone. The water-based paint composition 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 process for preparing a water-based paint composition, comprising the successive steps of:
(a) mixing a water-based solvent, a manganese oxide-based catalyst, an activated carbon, and a polyacrylate-based dispersant;
(b) mixing a pH adjuster with the resultant mixture; and
(c) mixing a water-soluble resin with the resultant mixture.

2. The process according to claim 1 , wherein
in step (a), the water-based solvent, the manganese oxide-based catalyst, the activated carbon, and the polyacrylate-based dispersant are dispersed using a bead mill or a roll mill, and
the dispersed manganese oxide-based catalyst has a maximum particle diameter of 20 μm or less determined by grind gauge, and
the dispersed activated carbon has a maximum particle diameter of 20 μm or less determined by the grind gauge.

3. The process according to claim 1 , wherein
in step (a), the water-based solvent, the manganese oxide-based catalyst, the activated carbon, and the polyacrylate-based dispersant are dispersed using a bead mill or a roll mill, and
the dispersed manganese oxide-based catalyst has a 90% diameter (D90) of 10 μm or less determined by laser diffraction analysis, and
the dispersed activated carbon has a 90% diameter (D90) of 10 μm or less determined by laser diffraction analysis.

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

• C09D7/61 Primary

  inorganic · CPC title

• B01J21/10

  Magnesium; Oxides or hydroxides thereof · CPC title

• B01J23/34

  Manganese · CPC title

• B01J35/023

  Operations & Transport · mapped topic