Polysiloxane block copolymers

US8076440B2 · kind B2 · utility

Assignee

• EVONIK GOLDSCHMIDT GMBH · DE

Inventors

• Dirk Kuppert · Frankfurt, DE
• Burghard Gruning · Essen, DE
• Brian Yang · Midlothian, US
• Sven Balk · Frankfurt, DE
• Gerd Lohden · Essen, DE

Key dates

• Filing date: Sep 26, 2008
• Grant date: Dec 13, 2011
• Expiry date: Aug 20, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L83/10
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The invention relates to polysiloxane block copolymers of the formula A[LB(S)Q]m, where A is a polysiloxane block, L is a divalent organic linker, B is a polymer block composed of radically polymerizable monomers, S is a sulfur atom and Q is a monovalent organic radical and m is an integer from 1 to 50, to a method for their production, and to their use in cosmetics or personal care.