| 摘要 |
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 a t 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 -C n H2n- optionally e nd- 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 differen t 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; a nd optionally (4) water in an amount sufficient to react with 5 % to 60 % of the isocyanate groups in the diisocyanate or polyisocyanate are disclosed.
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