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. 15, 1980
Filed:
May. 15, 1978
Applicant:
Inventors:
Egon N Petersen, Neunkirchen-Seelscheid, DE;
Hermann Richtzenhain, Much-Schwellenbach, DE;
Klaus Schrage, Konigswinter-Uthweiler, DE;
Assignee:
Dynamit Nobel Aktiengesellschaft, Troisdorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
568639 ; 2606 / ; 560221 ;
Abstract
Process for the side-chain chlorination of aromatic compounds completely halogenated in the nucleus, containing methyl groups, and having the general formulas: ##STR1## wherein y=1 or 2, z=0 to 1, x=6-(y+z), n=0 to 8 and k=(8-n) and the methyl groups are, respectively, in the ortho, meta or para position to one another and in the p-position to the oxygen bridge, by thermal chlorination in the liquid phase. The bis-monochloromethyl compounds of formula (II) are novel compounds. The chlorination products are useful as intermediates.