Fluorine-containing urethanes

Details Fluorine-containing urethanes Fluorine-containing urethanes

2011-03-29

2011-03-29

Douyon, Lorna M (Department: 1761)

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

C252S008620, C106S287280, C106S287300, C106S287320, C560S227000, C428S034200, C428S034500, C428S036100

Reexamination Certificate

active

07914589

ABSTRACT:
Fluorine-containing urethanes represented by the general formula:in-line-formulae description="In-line Formulae" end="lead"?[Rf-A1-Z—X1—OC(═O)NH—]mI[—NHC(═O)O—Y1]n[—NHC(═O)O—(ClCH2—)X2O)a—R1]k  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein I is a group derived from a polyisocyanate by removal of the isocyanato groups; Rf is perfluoroalkyl of 1 to 21 carbon atoms; A1is a direct bond or an organic group of 1 to 21 carbon atoms; Z —SO2—; X1is a divalent, straight-chain or branched, C1-5aliphatic group which may have at least one hydroxyl group; X2is a trivalent, straight-chain or branched, C2-5aliphatic group; Y1is a monovalent organic group which is optionally hydroxylated; and R1is hydrogen or alkyl of 1 to 10 carbon atoms.

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