Compositions comprising a fiber material and a thermoplastic binder

US10519287B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Andreas Niegemeier · Düsseldorf, DE
• Andreas Ferencz · Goldkronach, DE
• Tamara Schmidt · Oberhausen, DE
• Wolfgang Lupp · Duisburg, DE
• Tim Maeling · Troisdorf, DE

Key dates

• Filing date: Jun 14, 2019
• Grant date: Dec 31, 2019
• Expiry date: Jun 14, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to compositions comprising a fiber material and a specific thermoplastic binder. The thermoplastic binder comprises at least one thermoplastic polyurethane polymer, wherein said thermoplastic polyurethane polymer comprises a reaction product of (i) at least one semi-crystalline polyester polyol, and (ii) at least one polyisocyanate. The molar ratio of the NCO groups of said polyisocyanate (ii) to the sum of OH groups of said polyester polyol (i) is less than 1.00:1 and the thermoplastic polyurethane polymer has (a) a melting enthalpy of at least 20 J/g, (b) a melting point (Tm) of >70° C., and (c) an average number molecular weight (Mn) of 5,000 to 80,000 g/mol. Furthermore, the present invention relates to a fiber-reinforced composite comprising a cured thermosetting polyurethane polymer matrix reinforced by the composition according to the present invention. Moreover, a method for the manufacture of the fiber-reinforced composite according to the present invention and use of the composition or the fiber-reinforced composite in railway vehicles, automotive vehicles, aircraft vehicles, boats, space vehicles, motorbikes, bicycles, sporting goods, helmets, funct…