Structural isomers of poly (alkyl ethylenes)

US6388020B2 · kind B2 · utility

Assignee

• Borealis AG · AT

Inventors

• Manfred Raetzsch · Kirchschlag, AT
• Achim Hesse · Dresden, DE
• Hartmut Bucka · Staprijk, AT
• Norbert Reichelt · Ansfelden, AT
• Ulf Panzer · Ansfelden, AT
• Konrad Buehler · Freyburg, DE

Key dates

• Filing date: Jan 27, 1997
• Grant date: May 14, 2002
• Expiry date: Jan 27, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/16
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Structurally isomeric poly(alkyl ethylenes) with H and Y structures, polymeric bridging segments and a Y index of 2×10−3 to 8×10−3 (kJ/mole/degree), have decreased instability in the melt and more advantageous processing properties. The structurally isomeric poly(alkyl ethylenes) with H and Y structures are synthesized by an irradiating method, a melt reaction method or a solid phase reaction method by reacting poly(alkyl ethylenes) with 0.05 to 5% by weight of monofunctional, difunctional and polyfunctional monomers, optionally in the presence of peroxides. The structurally isomeric poly(alkyl ethylenes) are suitable for producing films, sheets, panels, coatings, pipes, hollow objects and foams.