| 摘要 |
Disclosed herein is a composition comprising: A) a moisture curable polymer selected from the group consisting of silylated polyurethanes, silylated polyethers, and mixtures thereof; and B) a silicone oligomer of the formula (I): [R3SiO1/2]m[O1/2Si(R2)O1/2]n[SiO3/2R]o[SiO4/2]p wherein each R is independently selected from the group consisting of B, R<1>, -OR<2>, R<3>, and R<4>; B is an organosilyl functional group bridged to the Si atom of the siloxane oligomer backbone by a Si-C bond; each R<1> is independently a saturated or aromatic hydrocarbon group of 1 to 16 carbon atoms; each R<2> is independently a group as defined for R<1> or an acyl group; each R<3> is independently a monovalent organic group containing an aliphatic unsaturated hydrocarbon group; each R<4> is a monovalent organic group linked to the Si atom of the siloxane oligomer backbone by a Si-C bond that does not include an aliphatic unsaturated hydrocarbon group and that has thereon one or more members of the group selected from ether, polysulfide, ester, polyester, carbamate, polyurethane, isocyanurate, thioether, polysulfide, blocked mercaptan, amide, cyano, and oximato groups with the provisos that at least one R is a B, at least one quarter of all R groups are -OR<2>, and at least one silicon atom of the oligomer has an R<3> group thereon; m is 2 to 10; n is 0 to 20; o is 0 to 20; and p is 0 to 10. |
