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    • 5. 发明授权
    • Process for preparing glycide by epoxidation using polymeric
organosiloxane ammonium salts of oxoacids of the elements V, Nb, Ta,
Mo, and W
    • 使用元素V,Nb,Ta,Mo和W的含氧酸的聚合有机硅氧烷铵盐通过环氧化制备糖苷的方法
    • US5286885A
    • 1994-02-15
    • US53248
    • 1993-04-28
    • Peter GoetzStefan WielandPeter PansterGustaaf GoorRainer Siegmeier
    • Peter GoetzStefan WielandPeter PansterGustaaf GoorRainer Siegmeier
    • C08G77/54C08G77/58C07D301/12C07D303/14
    • C08G77/54C08G77/58
    • The invention relates to polymeric organosiloxane ammonium salts having a silica-like skeleton and including units of Formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and signify a group of Formula (II): ##STR2## wherein R.sup.5 is an alkylene group and the oxygen atoms are saturated by silicon atoms of additional groups corresponding to Formula (II), optionally with the insertion of cross-linking agents; R.sup.3 represents groups corresponding to R.sup.1 or R.sup.2, or hydrogen or an alkyl group; R.sup.4 represents hydrogen or an alkyl group; x is the charge number of an oxo anion of a monooxo-, isopolyoxo- or heteropolyoxo acid of the elements vanadium, niobium, tantalum, molybdenum or tungsten; and oxo groups of the X anion also may be replaced by peroxo groups. The invention also includes methods of preparing the salts of Formula (I) from salts of the type (R.sup.1 R.sup.2 R.sup.3 R.sup.4 N.sup.+).sub.y Y wherein Y is different from X. The invention further includes the use of the salts of Formula (I) as catalyst for oxidation reactions using peroxo compounds as an oxidation agent.
    • 本发明涉及具有二氧化硅样骨架并包括式(I)的单元的聚合有机硅氧烷铵盐:(*化学结构*)(I)其中R1和R2相同或不同并且表示式(II)的基团: (*化学结构*)(II)其中R5是亚烷基并且氧原子被对应于式(II)的另外的基团的硅原子饱和,任选地插入交联剂; R3表示对应于R1或R2的基团,或氢或烷基; R4表示氢或烷基; x是元素钒,铌,钽,钼或钨元素的单氧,异羟基或杂多酸的氧阴离子的电荷数; X阴离子的氧基也可以被过氧基取代。 本发明还包括从其中Y不同于X的类型(R 1 R 2 R 3 R 4 N +)y Y的盐制备式(I)的盐的方法。本发明还包括使用式(I)的盐作为氧化反应的催化剂,其使用 过氧化合物作为氧化剂。