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Surface-Modified Metal Oxides Methods for Production and Use Thereof in Cosmetic Preparations

  • US 20070218019A1
  • Filed: 03/26/2005
  • Published: 09/20/2007
  • Est. Priority Date: 03/31/2004
  • Status: Abandoned Application
First Claim
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1. A surface-modified nanoparticulate metal oxide, where the metal is chosen from the group consisting of aluminum, cerium, iron, titanium, zinc and zirconium, wherein a) the surface modification comprises a coating with polyasparaginic acid with a molecular weight Mw of from 1000 to 100 000, and b) the metal oxide particles have an average primary particle diameter of from 5 to 10 000 nm.

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