Adhesive composition comprising amorphous propylene-ethylene copolymer and polyolefins

US11267916B2 · kind B2 · utility

Assignee

• Eastman Chemical Company · US

Inventors

• Terri Roxanne Carvagno · Church Hill, US
• Susana Marques · Rotterdam, NL
• Ming Allison Yuan · Shanghai, CN
• Da Yu Vincent Zhang · Shanghai, CN
• Boon Hui Janice Ang · Singapore, SG
• Marc Stacey Somers · Kilgore, US
• Raymond Prescott Cottle · Longview, US
• Bennett H. Novak · Longview, US
• Puthenkovilakom Rajesh Raja · Baytown, US

Key dates

• Filing date: May 11, 2020
• Grant date: Mar 8, 2022
• Expiry date: May 11, 2040

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/025
• 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.