Ethylene copolymers and blend compositions

US7714073B2 · kind B2 · utility

Inventors

• Grant Berent Jacobsen · Houston, US
• Jozef Van Dun · Horgen, CH
• Pak-Wing S. Chum · Midland, US
• Larry A. Meiske · Baton Rouge, US
• Fumio Matsushita · Tokyo, JP
• Akira Miyamoto · Kurashiki, JP

Key dates

• Filing date: Jun 28, 2006
• Grant date: May 11, 2010
• Expiry date: Jun 28, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention provides blends comprising an ethylene copolymer formed from ethylene with at least one comonomer selected from (a) the group comprising compounds represented by the formula H2C═CHR wherein R represents a C1-C20 linear, branched or cyclic alkyl group or a C6-C20 aryl group, and (b) a C4-C20 linear, branched or cyclic diene. Each copolymer has a specific density, a specific molecular weight distribution, and a specific comonomer content distribution characteristic.