The invention relates to copolymers of siloxanes with the formula:
(Ra)₃SiO(V)v-(W)w-(Y)y-(Z)z-Si(Ra)₃
where
V = -SiRaRbO-;
W = -SiR'a(Rc-Rd-OCH=CH₂)O-;
Y = -SiRaRgO-;
Z = -RaRgSiCnH2nR'fCnH2nSiRaRgO- where n = 2, 3 or 4;
v, y, z = 0 or an integer, w ≠ 0 with v + y + z ≠ 0;
Ra = alkyl or phenyl; Rb = Ra; R'a = Ra or alkoxy; Rc = alkylene, for example: Rd = -OCONHReNHCO-, -NH-COOC₂H₄-or -NHCOOC₃H₆-; Re = divalent hydrocarbon radicals; Rg, Rf and R'f are fluorinated or perfluorinated radicals.
Use for the preparation of antiadhesive coatings, for example, on paper.
本发明涉及式如下的
硅氧烷共聚物:
(Ra)₃SiO(V)v-(W)w-(Y)y-(Z)z-Si(Ra)₃
其中
V = -SiRaRbO-;
W = -SiR'a(Rc-Rd-OCH=CH₂)O-;
Y = -SiRaRgO-;
Z = -RaRgSiCnH2nR'fCnH2nSiRaRgO- 其中 n = 2、3 或 4;
v、y、z = 0 或整数,w ≠ 0,其中 v + y + z ≠ 0;
Ra = 烷基或苯基;Rb = Ra;R'a = Ra 或烷氧基;Rc = 亚烷基,例如:Rd=-OCONHReNHCO-、-NH-COOC₂H₄-或-NHCOOC₃H₆-;Re=二价烃基;Rg、Rf和R'f为
氟化或
全氟基。
用于制备纸张等的防粘涂层。