Nucleating agent for compact thermoplastic polyurethanes

US10927253B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Raphael Dabbous · Riehen, CH
• Elmar Poeselt · Lemförde, DE
• Birte Lahrmann · Bohmte, DE
• Guido Bilges · Bohmte, DE

Key dates

• Filing date: Feb 22, 2017
• Grant date: Feb 23, 2021
• Expiry date: Feb 22, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/24
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for producing a composition (I) at least comprising a compact thermoplastic polyurethane (P1), comprising the providing of at least one compact thermoplastic polyurethane (P1) or a reaction mixture for production of a compact thermoplastic polyurethane (R-P1), the adding of at least one compound (N) that has a conjugated, nitrogen-containing aromatic structure as nucleating agent to the at least one thermoplastic polyurethane (P1) or to the reaction mixture for production of a compact thermoplastic polyurethane (R-P1), wherein the compound (N) is a solid; and the mixing of the nucleating agent and the thermoplastic polyurethane (P1) or the reaction mixture (R-P1) to obtain a composition (I). The nucleating agent is used here in an amount in the range from 0.01% by weight to 2.0% by weight, based on the thermoplastic polyurethane (P1) or the reaction mixture (R-P1). Further relates the present composition comprising at least one compact thermoplastic polyurethane and at least one compound (N) that has a conjugated, nitrogen-containing aromatic structure as nucleating agent, wherein the compound (N) is a solid, and the use of the compounds m…