Non-sticky, soft and transparent styrenic thermoplastic elastomers

US11891503B2 · kind B2 · utility

Assignee

• INEOS STYROLUTION GROUP GMBH · DE

Inventors

• Michiel VERSWYVEL · Mechelen, BE
• Norbert Niessner · Friedelsheim, DE
• Eike Jahnke · Frankfurt, DE
• Daniel Wagner · Bad Dürkheim, DE
• Konrad Knoll · Mannheim, DE

Key dates

• Filing date: Mar 12, 2018
• Grant date: Feb 6, 2024
• Expiry date: Nov 19, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2207/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Thermoplastic elastomer compositions can be use for medical applications, Comprising: a) 97.1 to 90.9 wt.-% star-shaped block copolymer A with identical arms of the structure [S1-(S/B)k-(S/B)I-(S/B)m-S2]n-X, where S1 and S2 are vinylaromatic hard polymer and S/B are soft random vinylaromatic/diene copolymer blocks; X is a coupling center; and b) 2.9 to 9.1 wt.-% plasticizer B.