Amorphous propylene-ethylene copolymers

US11390701B2 · kind B2 · utility

Assignee

• Synthomer Adhesive Technologies LLC · US

Inventors

• Mutombo Joseph Muvundamina · Johnson City, US
• Gary Robert Robe · Frankfort, US
• Andrea Gail Hagood · Kingsport, US
• Timothy Williams · Anderson, US
• Dhiraj Sudesh Sood · Atlanta, US
• Marc Stacey Somers · Kilgore, US
• Raymond Prescott Cottle · Longview, US
• Bennett H. Novak · Longview, US
• Rajesh Puthenkovilakom Raja · Baytown, US

Key dates

• Filing date: Jun 18, 2020
• Grant date: Jul 19, 2022
• Expiry date: Jun 18, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J153/025
• 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.