| 摘要 |
The invention relates to a process for the treatment of polyoxyalkylene-polysiloxane block copolymers or alkylpolysiloxane-polyoxyalkylenepolysiloxane block copolymers in which the polysiloxane blocks are bonded to the polyether blocks or alkyl radicals by SiC bonds, wherein the polyoxyalkylene-polysiloxane block copolymers or alkylpolysiloxane-polyoxyalkylenepolysiloxane block copolymers or the solutions thereof are treated with flowing hydrogen gas and optionally a further inert gas in the presence of a combination of hydrogenation catalysts known per se and acid-activated carrier materials and water at temperatures of from 20 to 200° C. and atmospheric pressure over a period of from 0.5 to 10 hours.
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