Amorphous propylene-ethylene copolymers

US10725406B2 · 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: Jan 24, 2019
• Grant date: Jul 28, 2020
• Expiry date: Jan 24, 2039

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.