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:
Oct. 28, 2014
Filed:
Nov. 11, 2011
Volker Stanjek, Ampfing, DE;
Michael Stepp, Ueberackern, AT;
Volker Stanjek, Ampfing, DE;
Michael Stepp, Ueberackern, AT;
Wacker Chemie AG, Munich, DE;
Abstract
The invention provides a process for preparing carbamatoorganosilanes (S) of the general formula (7) in which a haloorganosilane (S1) of the general formula (8) is reacted with a metal cyanate (MOCN) and an alcohol (A) of the general formula (9) in the presence of at least one aprotic solvent (L), where R, Rand Rare each an unsubstituted or halogen-substituted hydrocarbyl radical having 1-10 carbon atoms, Ris a divalent unsubstituted or halogen-substituted hydrocarbyl radical which has 1-10 carbon atoms and may be interrupted by nonadjacent oxygen atoms, X is a halogen atom, and x is a value of 0, 1, 2 or 3, where the removal of the solid metal halides formed as by-products and of any solid metal cyanate residues still present is preceded by distillative removal of at least 50% of the solvent (L).