| abstract |
Fluorourethane additives for water-dispersed coating compositions comprising the product of the reaction of 1) at least one diisocyanate, or polyisocyanate or a mixture of polyisocyanates containing at least three isocyanate groups per molecule, (2) at least one fluorochemical compound containing at least one Zerewitinoff hydrogen in an amount sufficient to react with 5% to 80% of the isocyanate groups in the diisocyanate or polyisocyanate, (3) at least one compound of the formula R10-(R2)k-YH in an amount sufficient to react with 5% to 80% of the isocyanate groups in the diisocyanate or polyisocyanate and wherein R10 is a C1-C18 alkyl, C1-C18 omega-alkenyl radical, or C1-C18 omega-alkenoyl; R2 is -CnH2n- optionally end-capped with -[OCH2C(R4)H]p-, -[OCH2C(CH2Cl)H]p-, or -C(R5) (R6) (OCH2C[CH2Cl]H)p-, wherein R4, R5, and R6 are the same or different and are H or a C1-C6 alkyl radical, n is 0 to 12, p is 1 to 50; Y is O, S, or N(R7) wherein R7 is H or C1-C6 alkyl; and k is 0 or 1; and optionally (4) water in an amount sufficient to react with 5% to 60% of the isocyanate groups in the diisocyanate or polyisocyanate are disclosed. |