Amide-linked Perfluoropolyether Thiol Compounds and Processes for their Preparation and Use
Assignee3M Innovative Properties Company
InventorsSuresh S. Iyer, Mark J. Pellerite, Chetan P. Jariwala
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Abstract
A perfluoropolyether thiol compound comprises a perfluoropolyether segment, at least one mercapto group (—SH), and at least one intervening divalent carbonylimino moiety (—C(═O)—NR—, wherein R is hydrogen or alkyl). The compound can be produced, for example, by a ring-opening reaction of thiolactones with perfluoropolyether-substituted, primary or secondary amines. The compound can be used, for example, as a polymerization chain transfer agent, as an intermediate for the preparation of functional group-containing fluorochemical derivatives such as disulfides, and as a fluorinated surface treatment.
Claims23
A perfluoropolyether thiol compound comprising a perfluoropolyether segment, at least one mercapto group, and at least one intervening divalent carbonylimino moiety.
(canceled)
A perfluoropolyether thiol compound comprising (a) a monovalent or divalent perfluoropolyether segment that comprises at least one divalent hexafluoropropyleneoxy group, (b) at least one mercapto group, and (c) at least one intervening divalent carbonylimino moiety, —C(═O)—NH—, that is directly or indirectly bonded through its carbon atom to said perfluoropolyether segment and indirectly bonded through its nitrogen atom to said mercapto group.
(canceled)
A perfluoropolyether disulfide compound comprising two perfluoropolyether segments and at least one pair of intervening divalent carbonylimino moieties that are linked by, and bonded to, a central divalent dithio moiety.
(canceled)
Dependencies are inferred from the claim text.