Core-hydrogenated block copolymers having an asymmetric structure

US6916879B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Konrad Knoll · Mannheim, DE
• Arnd Bottcher · Bischofswerda, DE
• Michael Ishaque · Mannheim, DE
• Friederike Osswald · Mannheim, DE
• Jan-Dirk Arndt · Mannheim, DE

Key dates

• Filing date: May 14, 2002
• Grant date: Jul 12, 2005
• Expiry date: May 14, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L53/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to core-hydrogenated block copolymers composed of vinyl aromatic monomers and dienes having at least two blocks S, which are of different molecular weights and ate comprised of vinyl aromatic monomers. The invention also relates to mixtures containing core-hydrogenated polysterene and to methods for the production thereof.