Patent · US Expired

Polymer processing additive containing a perfluorovinylether-modified flouropolymer and a melt processable thermoplastic polymer composition employing the same

US6380313B1 · kind B1 · utility

10Cited by

12References

22Claims

0Family size

Assignee

Dyneon GmbH · DE

Inventors

Maria P. Dillon · Windom, US
Harald Kaspar · Altötting, DE
Bernhard Hirsch · Altötting, DE
Klaus Hintzer · Woodbury, US
Karl D. Weilandt · Minneapolis, US

Key dates

Filing date	Jun 27, 2000
Grant date	Apr 30, 2002
Priority date	—
Expiry date	Jun 27, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L71/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

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 fluoropolymer that comprises interpolymerized units derived from a perfluorovinyl ether, preferably one having the formula CF2&boxH;CF—(OCF2CF(CF3))AORf where a has a value of 0 to 3 and Rf is a perfluoroaliphatic (preferably perfluoroalkyl or perfluoroalkoxy) having from 1 to 8 (preferably 1 to 3) carbon atoms.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.