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:
Sep. 20, 1977
Filed:
Jul. 07, 1975
Applicant:
Inventors:
Assignee:
Societe Nationale Elf Aquitaine, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01K / ;
U.S. Cl.
CPC ...
2041 / ; 2041 / ; 250527 ;
Abstract
In a photochemical process, halogeno-alkanes are produced by irradiation of an ethylenic compound and of an excess amount of bromhydric acid, the reaction being advantageously carried out in the presence of a certain amount of the halogeno-alkane compound to be obtained. The ethylenic compound concentration is of 1 mole to 1.5 mole per liter in the reaction medium; the reaction is continued until a 90% conversion is reached. 3-bromo-1-chloro-propane is obtained with a good yield by irradiation of allyl chloride and HBr. Apparatus is provided for carrying out the process batchwise and in continuous operation.