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. 29, 1985
Filed:
Jan. 11, 1984
Applicant:
Inventor:
Peter J Richardson, Rochdale, GB;
Assignee:
Imperial Chemical Industries Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
564289 ; 564373 ; 564388 ; 570127 ; 570182 ; 570218 ;
Abstract
Tetrahalobenzene compounds of the formula (I): ##STR1## in which X is independently chloro or, preferably, fluoro and Y is hydrogen or --N.sup.+ R.sub.3 A.sup.- in which each R is independently C.sub.1-4 alkyl and A is a radical capable of forming an anion A.sup.-, are prepared by