| 摘要 |
Disclosed are shaped organosiloxane polycondensates in the form of macroscopic spherical particles with a diameter of 0.01 to 2.5 mm, a specific surface area of 0.01 to 1000 m2/g, a specific pore volume of 0.01 to 5 ml/g, and a bulk density of 50 to 1000 g/l, consisting of units of the formula (I): X-R1 (I) and/or the formula (II): R2-Y-R3 (II) and the formula (III): <IMAGE> (III) as well as optionally, in addition, units of the formula <IMAGE> (IV) wherein R1 to R3 are identical or different and represent a group of the formula (V): or Y group and representing a linear or branched, fully saturated or unsaturated alkylene group, a cycloalkylene group, a phenylene group or a unit of the formula <IMAGE> or <IMAGE> and M corresponding to a Si, Ti or Zr atom. Also disclosed are a process for preparation and use.
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