Polymer processing additive containing a multimodal fluoropolymer and melt processable thermoplastic polymer composition employing the same

US6277919A · kind A · utility

Assignee

• Dyneon GmbH · DE

Inventors

• Maria P. Dillon · Windom, US
• Susan S. Woods · Shoreview, US
• Kirsten J. Fronek · Woodbury, US
• Claude Lavallee · Maplewood, US
• Stephen E. Amos · Buckeystown, US
• Karl D. Weilandt · Minneapolis, US
• Harald Kaspar · Altötting, DE
• Bernhard Hirsch · Altötting, DE
• Klaus Hintzer · Woodbury, US
• Peter J. Scott · Madison, US

Key dates

• Filing date: May 13, 1999
• Grant date: Aug 21, 2001
• Expiry date: May 13, 2019

Classification

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

Abstract

A polymer processing aid composition, a melt processable polymer composition that uses the polymer processing aid, and a method of improving the melt processability of a thermoplastic polymer are provided. The polymer processing aid composition comprises a multimodal fluoropolymer that preferably comprises interpolymerized units derived from an ethylenically unsaturated fluoromonomer tetrafluoroethylene and at least one ethylenically copolymerizable alpha-olefin monomer.