Method for deodorizing sic-linked polyethersiloxanes
AssigneeTh. Goldschmidt AG
InventorsLothar Heinrich, Helmut Schator
Life of this patent
Estimating the term…
Abstract
A method for deodorizing polyoxyalkylene polysiloxane mixed block polymers wherein the polysiloxane blocks are linked to the polyether blocks through SiC linkages is disclosed. Hydrogen is allowed to act on the mixed block polymers in the presence of hydrogenation catalysts at temperatures of 20.degree. to 200.degree. C. and a pressure of 1 to 100 bar for a period of 0.5 to 10 hours.
Claims6
A method for deodorizing polyoxyalkylene polysiloxane mixed block polymers wherein the polysiloxane blocks are linked to the polyether blocks through SiC linkages, said method comprising causing hydrogen to act on the mixed block polymer in the presence of a hydrogenation catalyst at temperatures of about between 20.degree. to 200.degree. C. and at a pressure of about 1 to 100 bar for a period of about 0.5 to 10 hours.
Dependencies are inferred from the claim text.