Amorphous propylene-ethylene copolymers

US9593179B2 · kind B2 · utility

Assignee

• Eastman Chemical Company · US

Inventors

• Marc Stacey Somers · Kilgore, US
• Bennett H. Novak · Longview, US
• Puthenkovilakom Rajesh Raja · Kingsport, US
• Raymond Prescott Cottle · Longview, US

Key dates

• Filing date: Dec 11, 2014
• Grant date: Mar 14, 2017
• Expiry date: Dec 11, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J123/14
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Amorphous propylene-ethylene copolymers are described herein that can include high amounts of ethylene and exhibit desirable softening points and needle penetrations. The desirable combinations of softening points and needle penetrations in these propylene-ethylene copolymers allow them to have a broad operating window. Due their broad operating window, the propylene-ethylene copolymers can be utilized in a wide array of applications and products, including hot melt adhesives.