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:
Nov. 13, 2007
Filed:
Feb. 07, 2006
Tilman Zipplies, Burghausen, DE;
Klaus Hintzer, Kasti, DE;
Michael C. Dadaias, Eggenfelden, DE;
Gernot Loehr, Burgkirchen, DE;
Tilman Zipplies, Burghausen, DE;
Klaus Hintzer, Kasti, DE;
Michael C. Dadaias, Eggenfelden, DE;
Gernot Loehr, Burgkirchen, DE;
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
An aqueous non-melt processible polytetrafluoroethylene dispersion having non-melt processible polytetrafluoroethylene particles in an amount of 30 to 70% by weight and an amount of non-ionic surfactant between 2 and 15% by weight based on the weight of polytetrafluoroethylene solids. The dispersion is free of fluorinated surfactant or contains fluorinated surfactant in amounts of not more than 200 ppm based on the amount of polytetrafluoroethylene solids. At least part of the non-melt processible polytetrafluoroethylene particles comprise an effective amount of ionic end groups in the polytetrafluoroethylene polymer chains.