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Surface-modified, structurally modified titanium dioxides

A titanium dioxide, surface modification technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, nanotechnology for materials and surface science, etc., can solve the problem of rough feeling of sunscreen ingredients

Inactive Publication Date: 2006-08-09
DEGUSSA AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Disadvantage is that existing sunscreen ingredients made with titanium dioxide feel rough on the skin

Method used

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  • Surface-modified, structurally modified titanium dioxides
  • Surface-modified, structurally modified titanium dioxides
  • Surface-modified, structurally modified titanium dioxides

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0278] 1. Surface modification and structural change

[0279] The pyrolyzed titanium dioxide was treated with octyltrimethoxysilane and structurally modified. See Table 2 for details.

[0280] surface modification

structural change

oxide

*

SM **

SM ** copies /

100 parts oxide

condition

temperature[°C]

condition

time [h]

structural change

post grinding ***

Example 1

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OCTMO

10

120

2

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OCTMO

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120

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Yes

TDM

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OCTMO

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120

2

Yes

CAM

Example 4

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OCTMO

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120

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CAM

Example 5

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OCTMO

10

120

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no

Example 6

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OCTMO

10

120

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TDM

Example 7

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OCTMO

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C...

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Abstract

Pyrogenically prepared, surface-modified, structurally modified titanium dioxides and pyrogenically prepared, surface-modified, structurally modified titanium dioxide mixed oxides are prepared by structurally modifying and then surface modifying the titanium dioxide or titanium dioxide mixed oxide. The titanium dioxides can be used to produce sunscreen formulations.

Description

technical field [0001] The present invention provides pyrolysis-prepared, surface-modified, structure-modified titanium dioxide or pyrolysis-prepared, surface-modified, structure-modified titanium dioxide / iron oxide mixed oxide, its preparation method and its application in sunscreen Application in preparations. Background technique [0002] The use of pyrogenically prepared titanium dioxide and pyrogenically prepared titanium dioxide / iron oxide mixed oxides in sunscreen formulations is well known. These mixed oxides are not structurally modified (EP 0639533). [0003] The known pyrogenically produced titanium dioxides have the disadvantage that, when these sunscreen ingredients are applied to the skin, they are not quite transparent in the sunscreen formulations produced therefrom. [0004] When producing sunscreen formulations, costly and disadvantageous dispersion processes are necessary. During dispersion, the strong thickening effect of cosmetic oils or water prevent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/29A61Q17/04C01G23/047
CPCC01P2006/12C09C1/3692C01G23/07C09C1/3684A61K8/0208A61K8/29C01P2006/10C01P2004/64A61Q17/04A61K8/585B82Y30/00C09C1/3623A61P17/16C01G23/047C01G23/08
Inventor 于尔根·迈尔斯特芬·哈森查尔海克·里德曼安·格雷
Owner DEGUSSA AG
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