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

US5346963A · 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: Apr 28, 1993
• Grant date: Sep 13, 1994
• Expiry date: Apr 28, 2013

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.