The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 1994
Filed:
Apr. 05, 1993
Degussa Aktiengesellschaft, Frankfurt, DE;
Abstract
Formed spherical polymeric complexes of metals of the 8th subgroup of the periodic system with ligands of an organosiloxane copolycondensate optionally cross-linked by means of cross-linking agents containing Si, Ti, Zr and/or Al (statistical, block-shaped or mixed). This copolycondensate consists of the units ##STR1## in which R.sup.1 -R.sup.4 =R.sup.5 -Si ##STR2## in which R.sup.5 =alkylene with C.sub.1 -C.sub.10 directly bound to P or N, cycloalkylene with C.sub.5 -C.sub.8 or ##STR3## The ratio between the number of moles of units (II) and the number of moles of bound metal atoms is 1:1 to 1.000 to 1 and the ratio between units (I) and (II) is preferably 10:90 to 95:5 mole %. The polymeric complex compounds are present macroscopically as spherical particles with a diameter of 0.01. to 3.0 mm, a BET surface of >0 to 1000 m.sup.2 /g, a specific pore volume of 0.01 to 6.5 ml/g, and a bulk density of 50 to 1000 g/l. Several methods of preparing the substance of the invention with special posttreatment stages and the use of the polymeric metal complexes as catalysts in organic chemistry are disclosed.