Polymer blends from interpolymers of ethylene/α-olefins and flexible molded articles made therefrom

US7714071B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Stephen M. Hoenig · Lake Jackson, US
• Yunwa W. Cheung · Fryeburg, US
• Daniel G. Moldovan · Lake Jackson, US
• Wenbin Liang · Beijing, CN
• Chuiwah Alice Cheung · Lake Jackson, US
• Ray A. Lewis · Midland, US
• John Michael Newton

Key dates

• Filing date: Mar 15, 2006
• Grant date: May 11, 2010
• Expiry date: Dec 18, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L23/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polymer blends comprises 1) at least one ethylene/α-olefin interpolymer and 2) at least one polyolefin, or at least one styrenic block copolymer, or a combination thereof. Such polyolefins include, but are not limited to, high melt strength high density polyethylene and high melt strength polypropylene. The ethylene/α-olefin interpolymers are random block copolymers comprising at least a hard block and at least a soft block. The polyolefins can be homopolymers or interpolymers. The resulting polymer blends can be used to make flexible molded articles.