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. 19, 1980
Filed:
Nov. 21, 1978
Applicant:
Inventors:
Ryo Matsuura, Yamato, JP;
Tomio Segawa, Yokohama, JP;
Yukio Nomiyama, Yokohama, JP;
Yoichi Kumada, Zushi, JP;
Hideo Sawada, Yokohama, JP;
Assignee:
Kawasaki Kasei Chemicals Limited, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
2603145 ; 4235 / ; 423568 ;
Abstract
Highly chlorinated copper phthalocyanine is produced by charging chlorine under an elevated pressure of 1 to 20 Kg/cm.sup.2 (gauge) into a solution of a copper phthalocyanine in the presence of pyrosulfuryl chloride and a catalyst of sulfur or sulfur chloride. Pyrosulfuryl chloride can be formed by a reaction of chlorosulfonic acid with chlorine and sulfur or sulfur chloride under an elevated pressure. An auxiliary catalyst of iodine, iodine chloride or a metal chloride can be incorporated to improve the chlorination.