Synthesis and Characterization of 1,3-diphenyl-1,1,3,3-tetrakis (dimethylsiloxy) disiloxane

A kind of hydrogenous siloxane oligomers containing phenyl was synthesized by hydrolytic condensation between phenyltrimethoxysilane and tetramethyldisiloxane,in the presence of a solid acid catalyst,and the relative content of 1,3-diphenyl-1,1,3,3-tetrakis(dimethylsiloxy)disiloxane was 42.6%.Then it was rectified under the pressure of 0.665 kPa,and 1,3-diphenyl-1,1,3,3-tetrakis(dimethylsiloxy)disiloxane with a puirty up to 97.5%was obtained.The product was characterized by IR,GC-MS and NMR.Result showed that the structure of the target product matched that of 1,3-diphenyl-1,1,3,3-tetrakis(dimethylsiloxy)disiloxane perfectly.