Thermoplastic elastomer compositions

US6673857B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Konrad Knoll · Mannheim, DE
• Richard Rebizak · Ludwigshafen, DE
• Rainer Anderlik · Heidelberg, DE
• Sabine Philipp · Mörfelden, DE
• Josef Wunsch · Schifferstadt, DE

Key dates

• Filing date: Oct 24, 2001
• Grant date: Jan 6, 2004
• Expiry date: Oct 24, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L23/22
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A thermoplastic elastomer composition comprisesa) from 5 to 99% by weight of a block copolymer which is composed of hard blocks S made from vinyl aromatic monomers and of one or more random soft blocks B/S made from dienes and from vinyl aromatic monomers,b) from 1 to 95% by weight of a plasticizer with a higher polarity than white oil and with a lower polarity than diisooctyl phthalate,c) from 0 to 50% by weight of a polyolefin, andd) from 0 to 60% by weight of additives,where the total of a) to d) is 100% by weight. The use of the molding compositions to produce flexible or elastic moldings is described, as are the resultant moldings.