pH-regulated polyamide powder for cosmetic applications

US8293279B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Thomas Schiffer · Haltern, DE
• Holger Renners · Velen, DE
• Wolfgang Christoph · Marl, DE
• Franz-Erich Baumann · Schneverdingen, DE
• Joachim Muegge · Haltern am See, DE

Key dates

• Filing date: Jul 15, 2008
• Grant date: Oct 23, 2012
• Expiry date: Jul 2, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2377/00
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention relates to polyamide powders suitable for cosmetic applications are described which have a pH of 4.0 to 7.0, cosmetic compositions containing the polyamide powders and processes of making the same.