Novel, alkenyloxy-functional organosilicon compounds are described which contain at least one Si-bonded Y radical per molecule having the formula --(CH.sub.2).sub.2 --R.sup.2 --(A--R.sup.3).sub.z --O--CH.dbd.CH--CH.sub.2 --R.sup.4 (I), in which A represents --O--, --S-- or ##STR1## R.sup.2 represents a linear or branched alkylene radical having from 1 to 7 carbon atom(s) per radical or a cycloalkylene radical having from 5 to 7 carbon atoms per radical, R.sup.3 represents a linear or branched alkylene radical having from 2 to 4 carbon atoms per radical, which may be substituted by a hydroxyl group, methoxy group, ethoxy group or trimethylsiloxy group, R.sup.4 represents a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms(s) per radical, and z is 0, 1, or 2. The alkenyloxy-functional organosilicon compounds are preferably silanes or organopolysiloxanes. The alkenyloxy-functional organopolysiloxanes can be crosslinked, for example, with ultraviolet light. These organopolysiloxanes can also be used for preparing coatings.
本发明涉及一种新型的
烯烃
氧基功能
有机硅化合物,其分子中至少含有一个具有以下式子的Si-键Y基团:--(CH.sub.2).sub.2 --R.sup.2 --(A--R.sup.3).sub.z --O--CH.dbd.CH--CH.sub.2 --R.sup.4 (I),其中A代表--O--,--S--或##
STR1##,R.sup.2代表每个基团中具有1至7个
碳原子的线性或支链烷基基团,或者具有5至7个
碳原子的
环烷基基团,R.sup.3代表每个基团中具有2至4个
碳原子的线性或支链烷基基团,该基团可以被羟基、甲
氧基、乙
氧基或三
甲基硅氧基取代,R.sup.4代表
氢原子或每个基团中具有1至4个
碳原子的烷基基团,z为0、1或2。这些
烯烃
氧基功能的
有机硅化合物最好是
硅烷或有机聚
硅氧烷。这些
烯烃
氧基功能的有机聚
硅氧烷可以与紫外线交联。这些有机聚
硅氧烷也可用于制备涂层。