Composition olefinically functionalized siloxane oligomers based on alkoxysilanes

The invention relates to a composition containing olefinically functionalized siloxane oligomers, which are optionally derived with saturated hydrocarbons functionalized alkoxysilanes and optionally a tetraalkoxysilane of olefinically functionalized alkoxysilanes and, at most one olefinic radical having on the silicon atom with a reduced chloride content and a weight average molecular weight (Mw) of greater than 315 g / mol.