发明授权
US5352791A Hydrating or oxidizing process using a metal-containing, shaped organosiloxane amine copolycondensate catalyst 失效
使用含金属的有机硅氧烷胺共缩合催化剂进行保湿或氧化处理

Hydrating or oxidizing process using a metal-containing, shaped
organosiloxane amine copolycondensate catalyst
摘要:
Shaped organosiloxane amine copolycondensates are described which contain Pd, Pt, Ru and/or Rh, as well as optional promotors and/or moderators. The shaped copolycondensate function as a carrier for metals and are made up of units of: ##STR1## and/or units of Y--R.sup.6. R.sup.2 to R.sup.6 are a group represented by the formula: ##STR2## wherein R.sup.7 is a group bound to N, X, or Y (for example, an alkylene group) and R.sup.1 is R.sup.7 --SiO.sub.3/2, H, CH.sub.3, C.sub.2 H.sub.5, or C.sub.3 H.sub.7. X stands for a double-bonded group such as --S--, --S.sub.2 --, --S.sub.3 --, --S.sub.4 --, --HN--CS--NH-- and Y stands for a monovalent groups such as --CN, --SCN, --SH, --S--CH.sub.3, --NH.sub.2, --NH--(CH.sub.2).sub.2 --NH.sub.2. The carrier substance may be cross-linked with cross-linking agents containing Si, Ti, Zr or Al. The metal-containing product is spherical in form and is defined by the parameters of sphere diameter, specific surface and pore volume as well as bulk density. Methods of production and use of the copolycondensates are also described.
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