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US 8,008,407 B2Granted
Process for preparing silicone polyethers
AssigneeDow Corning Corporation
InventorsTheodore Oberhellman, Yoshiyuki Tanaka, Charles Neal, Simon Parsley, Brian Deeth
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Abstract
A process is disclosed for the preparing silicone polyethers by reacting; (A) a polyether having at least one terminally unsaturated aliphatic hydrocarbon group and an alkali metal content of less than 50 ppm, (B) an organohydrogensiloxane having an acid number of less than 0.005, via a hydrosilylation reaction. The process is particularly useful to prepare silicone polyethers of improved quality via a continuous process.
Claims12
A process for preparing a silicone polyether comprising reacting;
- (A) a polyether having at least one terminally unsaturated aliphatic hydrocarbon group and an alkali metal content of less than 50 ppm,
- (B) an organohydrogensiloxane having an acid number of less than 0.005, via a hydrosilylation reaction.
Dependencies are inferred from the claim text.