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:
Aug. 30, 2011
Filed:
Oct. 03, 2007
Blake E. Chandler, Woodbury, MN (US);
Thomas J. Blong, Woodbury, MN (US);
Shannon S. Le Blanc, White Bear Lake, MN (US);
Blake E. Chandler, Woodbury, MN (US);
Thomas J. Blong, Woodbury, MN (US);
Shannon S. Le Blanc, White Bear Lake, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A multi-layer article including a foodware substrate and a fluoropolymer composition having a copolymer consisting of from 80 to 94% by weight tetrafluoroethylene, from 6 to 20% by weight of one or more perfluorovinyl ethers of the formula CF═CFO(RO)(RO)R, where Rand Rare independently selected from linear or branched perfluoroalkylene groups of 1-6 carbon atoms, m and n are each independently 0-10 and Ris a perfluoroalkyl group of 1-6 carbon atoms, where when the perfluorovinyl ether content is less than 7% by weight, the fluoropolymer has an MFI of 5 or less; and/or a copolymer comprising from 80-94% by weight tetrafluoroethylene, from 5-20% by weight of a perfluorovinyl ether of the formula CF═CFO(RO)(RbfO)Rwhere RRm, n and Rare the same as defined above, and up to 15% by weight of one or more additional monomers based on the total weight of the fluoropolymer.