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:
Aug. 01, 1978
Filed:
Jul. 11, 1977
Stefan Schafer, Bruhl, DE;
Klaus Gehrmann, Erftstadt, DE;
Alexander Ohorodnik, Erftstadt, DE;
Karl-Heinz Steil, Hurth, DE;
Wernfried Riechmann, Bruhl, DE;
Friedhelm Bylsma, Erftstadt, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
Production of methyldichlorophosphane. The compound is made by reacting methane and phosphorus trichloride in a reaction zone in which a temperature higher than 500.degree. C is maintained. More specifically, hot reaction gas coming from the reaction zone is mechanically freed from solid matter, and the reaction gas freed from solid matter is passed to a quenching zone in which it is quenched with liquefied reaction mixture having 0.3 to 5 weight % of an organic barium compound or a non-ionic surfactant dissolved therein.