申请人:Rhone-Poulenc Chimie
公开号:US05051521A1
公开(公告)日:1991-09-24
Novel tetracoordinated tin (IV) compounds, well suited as latent catalysts for the preparation of polyurethanes or for the crosslinking of curable diorganopolysiloxanes (upon thermal decomposition thereof into diorganotin dicarboxylates or dialcoholates), have the general formula (1): ##STR1## in which the radicals R, which may be the same or different, are each a linear or branched chain C.sub.1 -C.sub.20 alkyl radical, a mononuclear aryl radical, or an aralkyl or alkaryl radical, the alkyl moieties of which having from 1 to 6 carbon atoms; the radicals R.sub.1 and R.sub.2, which may be the same or different, are each a hydrogen atom, a cyano radical, a C.sub.1 -C.sub.6 alkyl radical, or an alkoxycarbonyl radical, the alkyl moiety of which having from 1 to 6 carbon atoms, with the proviso that R.sub.1 and R.sub.2 may together form a saturated hydrocarbon ring member having from 5 to 8 carbon atoms; the radical R.sub.3 is a hydrogen atom, a linear or branched chain C.sub.1 -C.sub.20 alkyl radical, a linear or branched chain C.sub.1 -C.sub.20 alkoxy radical, a mononuclear aryl radical or a mononuclear aryloxy radical; and a is 0 or 1.
具有适合作为聚氨酯制备的潜在催化剂或可固化二有机基聚硅氧烷的交联剂(在热分解为二有机基锡二羧酸盐或二醇盐时),通式(1)的新型四配位锡(IV)化合物为:##STR1## 其中,基团R可以相同或不同,分别为线性或支链状C.sub.1-C.sub.20烷基基团、单核芳基基团或芳基烷基基团,其中烷基部分具有1-6个碳原子;基团R.sub.1和R.sub.2可以相同或不同,分别为氢原子、氰基、C.sub.1-C.sub.6烷基基团或烷氧羰基基团,其中烷基部分具有1-6个碳原子,但需注意R.sub.1和R.sub.2可以共同形成一个具有5-8个碳原子的饱和碳氢环;基团R.sub.3为氢原子、线性或支链状C.sub.1-C.sub.20烷基基团、线性或支链状C.sub.1-C.sub.20烷氧基团、单核芳基基团或单核芳氧基基团;a为0或1。