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:
Mar. 24, 1998
Filed:
Mar. 27, 1997
Theodore Arthur Treat, Washington, WV (US);
Satish Chandra Malhotra, Parkersburg, WV (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Polytetrafluoroethylene (PTFE) fine powder is provided which exhibits both low rheometer extrusion pressure and high adhesion to wire by incorporating into the free powder the combination of perfluoro(alkyl) ethylene such as perfluoro(n-butyl) ethylene with fluoro(alkyl vinyl ether), such as perfluoro(propyl vinyl ether), or fluoroolefin such as hexafluoropropylene as modifiers of the PTFE fine powder. The modified PTFE fine powder is made by aqueous dispersion copolymerization of TFE with the modifying monomers, with the addition of molecular weight reducing agent towards the end of the polymerization reaction.