Colored interference pigments having metallic luster, preparing method and use of same

A technology of metallic luster and interference pigments, applied in pigment preparation, pigment slurry, inorganic pigment treatment, etc., can solve problems such as undescribed interference colors, achieve high gloss coloring, high coloring, improve cohesiveness and compactness sexual effect

Inactive Publication Date: 2005-09-28
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting layer is a monolayer containing phosphorus in a silica coating (described in paragraph [002]); however, the interference with a reddish metallic sheen obtained by coating hydrated iron oxide on the outer layer is not described therein color

Method used

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  • Colored interference pigments having metallic luster, preparing method and use of same
  • Colored interference pigments having metallic luster, preparing method and use of same
  • Colored interference pigments having metallic luster, preparing method and use of same

Examples

Experimental program
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Effect test

Embodiment 1

[0088] Preparation of colored interference pigments with reddish metallic luster (Fe 2 o 3 / SnO 2 / [SiO 2 / Al(P)])

[0089] 50g has the flake metal substrate ([SiO 2 / Al(P)] obtained by Example 4-b in the paragraph [0061] of JP-A-2003-41150, the specific surface area is 3.01m 2 / g) suspended in 1 liter of water. The suspension was heated to 75°C with stirring. 100 g of SnCl with a concentration of 29 g / l was added dropwise to the suspension 4 5H 2 O solution while maintaining a pH of 1.8 using 32 wt% aqueous sodium hydroxide solution (preparation of the first layer, "intermediate adhesive layer"). Then 32 wt% sodium hydroxide was used to further adjust the pH to 3.0. Then drop 1816g of FeCl with a concentration of 30g / l 3 (III) Aqueous solution until the desired color shade is achieved while maintaining a pH of 3.0 with 32% by weight of sodium hydroxide (preparation of the second layer). The solid part was filtered out from the suspension, washed, dried, and calcine...

Embodiment 2

[0103] Preparation of colored interference pigments with reddish metallic luster (Fe 2 o 3 / SnO 2 / [SiO 2 / Al(P)])

[0104] 100g has the flake metal matrix ([SiO 2 / Al(P)] obtained by Example 4-b in the paragraph [0061] of JP-A-2003-41150, the specific surface area is 3.01m 2 / g) suspended in 2 liters of water. The suspension was heated to 75°C with stirring. 186ml of SnCl with a concentration of 50g / l was added dropwise to the suspension 4 5H 2 O solution while maintaining a pH of 1.8 using 20 wt% aqueous sodium carbonate (preparation of the first layer, "intermediate adhesive layer"). Then 20 wt% sodium carbonate was used to further adjust the pH to 3.0. Then drop 4540g of FeCl with a concentration of 87.75g / l 3 (III) Aqueous solution until the desired color shade is achieved while maintaining a pH of 3.0 using 20 wt% sodium carbonate (preparation of the second layer). The solid part was filtered from the suspension, washed, dried, and calcined at 350° C. for 30 m...

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Abstract

Colored interference pigments having metallic luster comprising, on the surface of a thin platelet-like metal substrate a layer of an anti-corrosive treatment in a non-aqueous system, and, thereon (1) an intermediate binder layer comprising hydrated tin oxide (first layer); and, thereon, (2) a hydrated iron oxide layer (second layer), exhibiting a reddish color and improved adhesion and denseness of the hydrated iron oxide layer, a process for producing same and their use.

Description

technical field [0001] The invention relates to a new colored interference pigment with metallic luster, its preparation method and application. Background technique [0002] Highly corrosion-resistant flaky metallic pigments having high corrosion resistance and good dispersibility without impairing the initial surface smoothness of flaky metal substrates such as alumina flakes are known (for example, Patent Document 1). The corrosion resistance of highly corrosion-resistant flake-shaped metal matrix pigments is obtained by treating the surface (first layer) of the flake-shaped metal matrix with a phosphoric acid compound and / or a boric acid compound in a non-aqueous system, passing The sol-gel method coats thereon the hydrated metal oxide (second layer). In addition, colored interference pigments with metallic luster are obtained by using a highly corrosion-resistant flake-shaped metal pigment as a substrate, and coating one or more layers of hydrated metal oxides on its o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/62C09C1/00C09C1/64C09C3/06C09D5/29C09D7/12C09D11/00C09D201/00
CPCC09C1/0015C01P2006/63C09C1/0081C01P2006/66C09C2200/1058C01P2004/03C01P2006/12C09C2200/301C01P2006/64C01P2006/62C01P2006/65C09D11/037C09C1/642C09C2220/106C09C1/62
Inventor 李邦银中村信明新田胜久
Owner MERCK PATENT GMBH
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