abstract |
New siloxane copolymers having vinyloxy groups contain: (a) siloxane units having the formula (I): Ra?Si(OR?1)b?O(4-(a+b))/2? , and (b) at least one unit per molecule selected from the grou p of units having the formulae (II), (III), (IV) or (V), in which R, R?1, Y, a, b, c, and x have the meaning given in the first claim. |