Patent Number: 8,716,511

Title: Process for preparing organoalkoxyhydrosilanes

Abstract: Process for preparing organoalkoxyhydrosilanes with a boron content less than 100 ppb and of the formula R.sup.1.sub.xH.sub.ySi(OR.sup.2).sub.z where x+y+z=4 and x, y, z are greater than or equal to 1, wherein, in a first step, a boron-contaminated organohalohydrosilane of the formula R.sup.1.sub.xH.sub.ySiHal.sub.z where x+y+z=4, x, y, z are greater than or equal to 1, and R.sup.1 are linear or branched alkyl, cycloalkyl, aryl, alkenyl or arylalkyl radicals having 1 to 12 carbon atoms and Hal is F, Cl, Br or I, is subjected to a treatment with silica or aluminosilicate and the silica or the aluminosilicate is subsequently removed from the organohalohydrosilane in a second step and then the purified organohalohydrosilane is reacted with alcohol R.sup.2--OH where R.sup.2 is a methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl or tert-pentyl radical.

Inventors: Knies; Wolfgang (Burghausen, DE), Bogershausen; Karin (Burghausen, DE)

Assignee: Wacker Chemie AG

International Classification: C07F 7/10 (20060101)

Expiration Date: 5/06/12018