The silicon bonded oxygenatom is bondedto anothersilicon atom or to a member from the class of hydrogen and hydrocarbon group. l M Each remaining unfilled valence of silicon is. satisfied by a hydrocarbon group Typical of the hydrocarbon groups are the alkyl, aryl, alkenyl and the like groups including methyl, ethyl, amyl phenyl, vinyl or the' like; These aminoalkylsilicon compounds are represente