Amorphous poly-alpha-olefins and use thereof in hot-melt compositions having improved sprayability

US12012533B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Sebastian Babik · Düsseldorf, DE
• Steffen Cepa · Marl, DE
• Andre Ebbers · Bochum, DE
• Klaus Behrendt · Herne, DE
• Jessica Vieth · Senden, DE
• Katharina Rawert · Moers, DE
• Gabriele Wrobel · Dorsten, DE

Key dates

• Filing date: Sep 3, 2019
• Grant date: Jun 18, 2024
• Expiry date: Jul 16, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J2423/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to amorphous poly-alpha-olefins, which are characterized in that said amorphous poly-alpha-olefins have a viscosity at 190° C. of less than 5000 mPas, a molar mass distribution (Mw/Mn) of 3 to 8, a quotient Mz/Mw of less than or equal to 3.0 and a quotient Mz/Mn of less than 21.0. The invention further relates to a method for producing degraded amorphous poly-alpha-olefins, in particular the amorphous poly-alpha-olefins according to the invention, and to the use of the amorphous polyalpha-olefins according to the invention or produced according to the invention in hot-melt adhesive compositions.