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:
May. 24, 1988
Filed:
Mar. 06, 1986
Jean-Luc Lepage, Sainte-Foy-les-Lyon, FR;
Gerard Soula, Meyzieu, FR;
Rhone-Poulenc Specialites Chimiques, Courbevoie, FR;
Abstract
Hydrogenated silanes are facilely prepared by redistribution, by reacting (1) a silane having the formula H.sub.m SiX.sub.4-m in which X is halogen or an alkoxy group and m is an integer equal to 0, 1, 2 or 3, with (2) an alkyl or aryl hydrosilane having the formula R.sub.n H.sub.p SiX'.sub.4-(n+p) in which X' is halogen or an alkoxy group, R is an alkyl or aryl group and n and p, which may be identical or different, are integers equal to 1, 2 or 3, with the proviso that n+p.ltoreq.4, in the presence of (3) a catalytically effective amount of a catalyst comprising (i) a quaternary ammonium salt having the formula R'.sub.4 NY or a quaternary phosphonium salt having the formula R'.sub.4 PY, in which formulae R', which may be identical or different, are each a monovalent hydrocarbon radical and Y is halogen, (ii) a tertiary amine of the general formula NR'R'R'', in which R', R' and R'', which may be identical or different, are monovalent hydrocarbon radicals, or (iii) an ion exchange resin comprising tertiary amine or quaternary ammonium groups.