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. 16, 2001
Filed:
Jun. 08, 2000
Applicant:
Inventors:
David Reeves, Francheville, FR;
Christophe Ruppin, Pierre-Benite, FR;
Gilles Drivon, Saint Martin en Haut, FR;
Assignee:
Atofina, Puteaux, FR;
Primary Examiner:
Int. Cl.
CPC ...
C07F 7/10 ;
U.S. Cl.
CPC ...
C07F 7/10 ;
Abstract
The invention relates to a process for manufacturing bis-silyl ureas which consists in reacting urea and a disilazane in an aliphatic nitrile and most particularly in acetonitrile. The process of the present invention applies particularly to the manufacture of bis(trimethylsilyl)urea from urea and hexamethyldisilazane.