| abstract |
The invention relates to copolymers of siloxanes of the formula (CF DRAWING IN BOPI) where V = -SiRa Rb O-; W = -SiR'a (Rc -Rd -OCH = CH2) O-; Y = -SiRa Rg O-; Z = -Ra Rg SiCn H2 n R'f Cn H2 n SiRa Rg O- where n = 2, 3 or 4; v, y, z = 0 or an integer, w Not = 0 with v + y + z Not = 0; Ra = alkyl or phenyl; Rb = Ra; R'a = Ra or alkoxy; Rc = alkylene, for example; Rd = -OCONHRe NHCO-, -NH-COOC2 H4 -, or -NHCOOC3 H6 -; Re = divalent hydrocarbon radical; Rg, Rf and R'f are fluorinated or perfluorinated radicals. Use for the preparation of non-stick coatings, for example on paper. |