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:
Jul. 28, 1987
Filed:
Oct. 27, 1986
Gunner E Nelson, Baton Rouge, LA (US);
Ethyl Corporation, Richmond, VA (US);
Abstract
Alkali metal aluminum tetraalkyls can alkylate tetraalkyl silicates and alkyltrialkoxysilanes, Si(OR).sub.4 and RSi(OR).sub.3, respectively. The product in each case is predominately the dialkylate. With tetraalkyl silicates, both of the alkyl groups bonded to silicon in the dialkylate product are derived from the metal tetraalkyl. With alkyltrialkoxysilanes, the silicon atom in the dialkylate product is (a) bonded to one alkyl group detained from the metal tetraalkyl, and (b) is also bonded to an alkyl group--that was bonded to silicon--in the silicon-containing starting material. Thus, the alkyl groups in the dialkylate product that are bonded to silicon can be alike or different. The dialkyldialkoxysilane products produced by this invention can be reduced to the corresponding silanes; e.g., R.sub.2 SiH.sub.2, by using an alkyl aluminum tetrahydride as the reducing agent. The dialkyldialkoxysilanes as well as the dialkylsilanes produced are useful as chemical intermediates.