| abstract |
The invention relates to a silicone-polyether copolymer having the formula (X-D2) gY, wherein each X is an independently selected silicone moiety having a particular structure, D2 is a divalent hydrocarbon group, the index g is greater than 1, and Y represents a linear or branched polyether moiety. The invention also relates to a process for preparing the silicone-polyether copolymer comprising reacting a polyether compound and an organosilicon compound in the presence of a hydrosilylation reaction catalyst. The invention also relates to a sealant, the sealant material comprising the silicone-polyether copolymer and a condensation reaction catalyst. |