2-(aryl)propylalkylpolysiloxane type silicone fluids and methods of making them

The present invention relates to novel cyclic or linear 2-(aryl)propylalkylpolysiloxane type silicone fluids as represented by the formula I and their preparation methods by hydrolyzing mixtures of 2-(aryl)propylalkyldichlorosilane and diorganodichlorosilane as represented by the formula II and formula III respectively. formula I formula II formula III wherein, X1 and X2 represent independently hydrogen or alkyl(C1-C3), phenyl, phenoxy, fluoro, chloro, bromo, mercapto, mercaptomethyl group; R2 and R3 represent independently methyl or phenyl group; R1 in the formula I is same as CH2CH2R in formula II or cyclohexyl wherein R is CnH2n+2 (n=1-16), chloromethylene, cyanomethylene, phenyl, or cyano group; M represents H or SiMe3 group wherein Me is methyl group and when M is hydrogen, the silanol groups at the both ends of the molecule easily undergo dehydration and cyclize to form the cyclic silicone fluids; n and m can be 2-200 and the ratio n/m can be 1:0.01-1:100.