Flame-retardant thermoplastic polyurethane comprising coated metal hydroxides, phosphorus-containing flame retardants and/or hydrotalcite or phyllosilicate

US9688841B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Oliver Steffen Henze · Bohmte, DE
• Oliver Muehren · Bramsche, DE
• Alfons Bertels · Diepholz, DE
• Sabine Conrad · Diepholz, DE
• Thomas Flug · Wagenfeld, DE
• Hans Rudolph · Krefeld, DE
• Christian Beckmann · Melle, DE
• Dietmar Meier · Schwentinental, DE

Key dates

• Filing date: Mar 13, 2013
• Grant date: Jun 27, 2017
• Expiry date: Mar 13, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2003/2227
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a flame-retardant thermoplastic polyurethane based on at least one diisocyanate and on at least one substance reactive toward isocyanate, and preferably on at least one chain extender, and also optionally on at least one catalyst, and comprising at least one flame retardant, and also optionally additives and/or auxiliaries, where one flame retardant is a metal hydroxide at least to some extent surrounded by a coating, the material comprises, as further flame retardant, at least one phosphorus-containing flame retardant which is a derivative of phosphoric acid, phosphonic acid, and/or phosphinic acid and the material further comprises hydrotalcite and/or phyllosilicate, and also to an associated production process and the use.