Process for making alpha,omega-siloxanediols

Details Process for making alpha,omega-siloxanediols Process for making alpha,omega-siloxanediols

1976-10-18

1978-01-03

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 708

Patent

active

040666808

ABSTRACT:
Alpha,omega-siloxanediols are prepared from siloxanes by a two-step process. In the first step, the siloxane is converted to a linear alpha,omega-diacyloxysiloxane by heating with an acid anhydride and a carboxylic acid in the presence of acid clay. The diacyloxysiloxane is hydrolyzed to the siloxanediol by heating with an aqueous solution of a weak base.

REFERENCES:
noll, "Chemistry and Technology of Silicones," Academic Press, N.Y. (1968), pp. 95 and 108.

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