Coating processes – Solid particles or fibers applied
Reexamination Certificate
2011-08-30
2011-08-30
Cameron, Erma (Department: 1715)
Coating processes
Solid particles or fibers applied
C427S189000, C427S195000
Reexamination Certificate
active
08007863
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 CF2═CFO(RafO)n(RbfO)mRcf, where Rafand Rbfare independently selected from linear or branched perfluoroalkylene groups of 1-6 carbon atoms, m and n are each independently 0-10 and Rcfis 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 CF2═CFO(RafO)n(RbfO)mRcfwhere Raf,Rbf,m, n and Rcfare 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.
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Blong Thomas J.
Chandler Blake E.
Le Blanc Shannon S.
3M Innovative Properties Company
Cameron Erma
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