The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 2002
Filed:
Jun. 27, 2000
Maria P. Dillon, St. Paul, MN (US);
Harald Kaspar, Burgkirchen, DE;
Bernhard Hirsch, Burgkirchen, DE;
Klaus Hintzer, Woodbury, MN (US);
Karl-Dieter Weilandt, Minneapolis, MN (US);
Dyneon LLC, Oakdale, MN (US);
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 CF ═CF—(OCF CF(CF )) OR where a has a value of 0 to 3 and R is a perfluoroaliphatic (preferably perfluoroalkyl or perfluoroalkoxy) having from 1 to 8 (preferably 1 to 3) carbon atoms.