Process for stabilizing unsaturated organosilicon compounds

A process for stabilizing organosilicon compounds bearing unsaturated groups of the formula II:

• H2C═C(R4)[C(O)O]w(O)x—(R5)y—Si(R6)z(OR7)3-z II
• during one or more of their preparation, distillation, or storage;
• wherein R4 is a hydrogen atom or a linear or branched hydrocarbon radical having 1-10 carbon atoms;
• R5 is a linear, cyclic or branched hydrocarbon radical having 1-40 carbon atoms optionally containing one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur and phosphorus;
• R6 and R7 are independently linear, cyclic, or branched hydrocarbon radicals having 1-10 carbon atoms, wherein w is 0 or 1, x is 0 or 1, y is 0 or 1, and z is 0, 1 or 2, and wherein w and x are not both 1 simultaneously, the compounds of the formula II having been obtained by reacting a haloalkylsilane with a salt of an unsaturated organic acid, by adding an effective stabilizing amount of one or more compounds of the formula I:
• 4
• wherein R1 and R2 are identical or different linear or branched alkyl radicals having 1-20 carbon atoms and the radicals R3 are identical or different substituents selected from the groups consisting of hydrogen and linear and branched alkyl radicals having 1-20 carbon atoms.