Process for forming methyl and phenyl-substituted silicone...

Details Process for forming methyl and phenyl-substituted silicone... Process for forming methyl and phenyl-substituted silicone...

C - Chemistry, Metallurgy

07

F

260/445.4

C07F 7/08 (2006.01)

Patent

CA 1132594

60SI-49 SILICONE DIFFUSION PUMP FLUIDS Abstract of the Disclosure The present invention relates to a variety of silicone diffusion pump fluids which are inexpensive to produce, An example of a preferred diffusion pump fluid of the present case is one of the formula, Image where ? is phenyl and such that the fluid boils at 245°C at 1.5 mm. of Hg pressure. The present invention also has within its scope a process for producing such silicone diffusion pump fluids by hydrolyzing the appropriate chlorosilanes by a reverse hydrolysis procedure, that is, adding the appropriate amount of water to the mixture of chlorosilanes.

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