Sulphonated comb polymers having a selected lithium/sodium ratio and preparations including such polymers

US7129299B2 · kind B2 · utility

Assignee

• BEIERSDORF AG · DE

Inventors

• Marion Detert · Hamburg, DE
• Andreas Koller · Regensburg, DE
• Roman Morschhäuser · Mainz, DE

Key dates

• Filing date: Apr 16, 2004
• Grant date: Oct 31, 2006
• Expiry date: Aug 1, 2024

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K2800/54
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Water-soluble and/or water-dispersible comb polymers comprising a polymer main chain and polyester side-arms which contain sulfonic acid groups and which are linked to the polymer main chain via ester groups, wherein said side-arms have been at least partially neutralized by sodium and lithium cations, wherein the molar ratio of lithium to sodium is between 0.1 and 50.