Fluorinated urethane compounds and compositions containing...

C - Chemistry – Metallurgy – 07 – C

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C07C 275/62 (2006.01) C07D 251/30 (2006.01) C09K 3/18 (2006.01) D06M 13/428 (2006.01)

Patent

CA 2493985

Fluorinated urethane compounds represented by the general formula (1) can impart high water- and oil-repellency: [Rf-A1-(X1(OH))-(Y1)a-OC(=O)NH-]mI [- NHC(=O)O-Y2]n [-NHC(=O)O-((ClCH2-)X2O)b-R1]k (1) wherein I is a group derived from a polyisocyanate compound by removing the isocyanato groups; Rf is perfluoroalkyl having 2 to 21 carbon atoms; A1 is a direct bond or a divalent organic group having 1 to 21 carbon atoms; X1 and X2 are each a trivalent, linear or branched aliphatic group having 2 to 5 carbon atoms; Y1 is a divalent organic group which has 0 to 5 carbon atoms and 0 to 2 nitrogen atoms (with the proviso that at least one carbon or nitrogen atom must be present) and contains at least one hydrogen atom; Y2 is a monovalent organic group which may have a hydroxyl group; and R1 is hydrogen or alkyl having 1 to 10 carbon atoms.

La présente invention concerne des composés uréthane fluorés représentés par la formule générale (1), qui sont capables de conférer des propriétés oléofuges et hydrofuges élevées : (1) [Rf-A?1¿-(X?1¿(OH))-(Y?1¿)¿a?-OC(=O)NH-]¿m? I [-NHC(=O)O-Y?2¿]¿n? [-NHC(=O)O-((ClCH¿2?-)X?2¿O)¿b?-R?1¿]¿k?, dans laquelle I est un groupe dérivé d'un composé polyisocyanate par le retrait des groupes isocyanate ; Rf est un perfluoroalkyle renfermant de 2 à 21 atomes de carbone ; A?1¿ est une liaison directe ou un groupe organique divalent renfermant de 1 à 21 atomes de carbone ; X?1¿ et X?2¿ sont chacun un groupe aliphatique trivalent linéaire ou ramifié ; Y?1¿ est un groupe organique divalent renfermant de 0 à 5 atomes de carbone et de 0 à 2 atomes d'azote (à condition qu'au moins un atome de carbone ou d'azote soit présent) et renfermant au moins un atome d'hydrogène ; Y?2¿ est un groupe organique monovalent qui peut contenir un groupe hydroxyle ; et R?1¿ est un hydrogène ou un alkyle renfermant de 1 à 10 atomes de carbone.

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