Patent ID: 7368584
Filing Date: 2008-05-06
Classification: C07F,C08K

Abstract:
1. A mercaptofunctional silane composition comprising at least one organofunctional silane selected from the group consisting of: (i) mercaptosilane possessing at least one hydroxyalkoxysilyl group and/or a cyclic dialkoxysilyl group, (ii) hydrocarbylsilane or heterocarbylsilane possessing at least one hydroxyalkoxysilyl group and/or a cyclic dialkoxysilyl group, (iii) mercaptosilane dimer in which the silicon atoms of the mercaptosilane units are bonded to each other through a bridging dialkoxy group, each silane unit optionally possessing at least one hydroxyalkoxysilyl group and/or a cyclic dialkoxysilyl group, (iv) hydrocarbylsilane and/or heterocarbylsilane dimer in which the silicon atoms of the hydrocarbylsilane and/or heterocarbylsilane units are bonded to each other through a bridging dialkoxy group, each silane unit optionally possessing at least one hydroxyalkoxysilyl group and/or a cyclic dialkoxysilyl group, (v) silane dimer possessing a mercaptosilane unit, the silicon atom of which is bonded to the silicon atom of a hydrocarbylsilane or heterocarbylsilane unit through a bridging dialkoxy group, each silane unit optionally possessing at least one hydroxyalkoxysilyl group and/or a cyclic dialkoxysilyl group, (vi) mercaptosilane oligomer in which the silicon atoms of adjacent mercaptosilane units are bonded to each other through a bridging dialkoxy group, the terminal mercaptosilane units possessing at least one hydroxyalkoxysilyl group and/or a cyclic dialkoxysilyl group, (vii) hydrocarbylsilane and/or heterocarbylsilane oligomer in which the silicon atoms of adjacent hydrocarbylsilane or heterocarbylsilane units are bonded to each other through a bridging dialkoxy group, the terminal hydrocarbylsilane and/or heterocarbylsilane units possessing at least one hydroxyalkoxysilyl group and/or a cyclic dialkoxysilyl group, and (viii) silane oligomer possessing at least one mercaptosilane unit and at least one hydrocarbylsilane or heterocarbylsilane unit, the silicon atoms of adjacent silane units being bonded to each other through a bridging dialkoxy group, the terminal silane units possessing at least one hydroxyalkoxysilyl group and/or a cyclic dialkoxysilyl group, with the provisos that, where the composition contains one or more of (i), (iii) and (vi), the composition additionally contains one or more of (ii), (iv), (v), (vii) and (viii), and where the composition contains one or more of (ii), (iv) and (vii), the composition additionally contains one or more of (i), (iii), (v), (vi) and (viii).