Graft-modified substantially linear ethylene polymers and methods for their use

US5705565A · kind A · utility

Assignee

• THE DOW CHEMICAL COMPANY · US

Inventors

• Morgan M. Hughes · Angleton, US
• Kyle G. Kummer · Lake Jackson, US
• Stephen R. Betso · Horgen, CH
• Michael E. Rowland · Lake Jackson, US
• Morris S. Edmondson · Alvin, US

Key dates

• Filing date: Sep 9, 1994
• Grant date: Jan 6, 1998
• Expiry date: Sep 9, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F255/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Substantially linear ethylene polymers, e.g., polyethylenes prepared by constrained geometry catalysis (substantially linear ethylene), which are grafted with one or more unsaturated organic compounds containing both ethylenic unsaturation and a carbonyl group, e.g., maleic anhydride, exhibit desirable adhesive properties. These graft-modified substantially linear ethylene polymers also impart desirable compatibility and impact properties to various thermoplastic polymer blends.