Alkyl carbonate endcapped polyether siloxanes and preparation thereof

摘要

The present invention provides polysiloxane-polyether copolymers comprising at least one polyether moiety, characterized in that there is at least one polyether moiety capped with at least one —O—C(O)—O—R″ unit where R″ is identical or different alkyl moieties, a process for preparation thereof and use thereof, especially for polyurethane foam production.

主权项

1. A polysiloxane-polyether copolymer comprising at least one polyether moiety capped with at least one —O—C(O)—O—R″ unit where R″=identical or different alkyl moieties, wherein said polysiloxane-polyether copolymer containing said at least one polyether moiety capped with said at least one —O—C(O)—O—R″ unit has a molar fraction of from 5 to 98 mol % for polyether moieties having a capping —O—C(O)—O—R″ unit, relative to the total number of polyether moieties present.