| 摘要 |
<p>Aqueous dispersion comprises a blocked isocyanate-based compound and a perfluoroalkyl-containing polymer prepared from a diepoxy and a diamine or polyamine to give good oil-, water- and dirt-resistance. Aqueous dispersion contains at least one component (A) comprising a compound with at least two blocked isocyanate groups per mol. and a second component (B) obtained by reacting a diepoxy compound(s) of formula (I) with a diamine or polyamine of formula (II) in a mol. ratio of glycidyl groups:amino group H atoms of 2:1-1:4, particularly 1:1-1.1 and then further reacting with an acid in a ratio of N:acid equivalents of 1:0.25-2: G = glycidyl (2,3-epoxy-1-propyl); L = (CO)c<1>-Ed-(CO)c<2>; E = 1-18C aromatic or (ar)aliphatic group optionally interrupted with O atom(s); c<1>, c<2> and d = 0 or 1 provided that they are not all 0 when y = 1; d = 0 or 2-10; y = 0 or 1; and z = 1-3, and when j = 0, z = 1. An Independent claim is included for the preparation of the above dispersion by dispersing the components.</p> |
