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:
Jan. 10, 2006
Filed:
Oct. 07, 2003
Thomas J. Blong, Woodbury, MN (US);
Lisa P. Chen, St. Paul, MN (US);
Ralph Kaulbach, Emmerting, DE;
Friedrich Kloos, Kastl, DE;
Georg Burkard, Altötting, DE;
Thomas J. Blong, Woodbury, MN (US);
Lisa P. Chen, St. Paul, MN (US);
Ralph Kaulbach, Emmerting, DE;
Friedrich Kloos, Kastl, DE;
Georg Burkard, Altötting, DE;
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
The invention provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97.5 mole percent (mol %) tetrafluoroethylene (TFE), about 2 to about 3 mol % perfluoro (propyl vinyl ether) (PPVE), and about 0.5 to about 3 mol % hexafluoropropylene (HFP). The invention also provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97 mol % TFE, about 0.75 to about 3 mol % PPVE, and about 1.5 to about 3.5 mol % HFP. These fluorothermoplastic compositions have a flex life that fits the equation:log(flex life cycles)≧0.71+4.0*(MFI),a method of making fluorothermoplastic compositions, a method of improving stress crack resistance, and fluorothermoplastic articles.