Multi-layer articles and method for improving the release life of the same
Assignee3M Innovative Properties Company
InventorsBlake E. Chandler, Thomas J. Blong, Shannon S. Le Blanc
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Assignee3M Innovative Properties Company
InventorsBlake E. Chandler, Thomas J. Blong, Shannon S. Le Blanc
Estimating the term…
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 Raf and Rbf are independently selected from linear or branched perfluoroalkylene groups of 1-6 carbon atoms, m and n are each independently 0-10 and Rcf is 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)mRcf where Raf, Rbf, m, n and Rcf are 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.
A method of increasing the release life of a multi-layer article comprising powder coating a foodware substrate with a fluoropolymer composition comprising a fluoropolymer selected from:
Dependencies are inferred from the claim text.