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. 27, 1976
Filed:
Aug. 07, 1974
Applicant:
Inventors:
Hans Wolf Jung, Anderten, DT;
Rudolf Maul, Lorsch, Hesse, DT;
Siegfried Kintopf, Bensheim, Bergstrasse, DT;
Wilfried Kloss, Kolmback uber Bensheim, DT;
Reinhard Knapp, Heppenheim, Bergstrasse, DT;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
2604297 ;
Abstract
In the manufacture of monomethyl-tin trichloride by disproportionation of tin tetrachloride with dimethyl-tin dichloride, high yields are achieved by employing phosphines, arsines and stibines or onium compounds of elements of the fifth main group in the periodic system as the catalyst, optionally together with a co-catalyst.