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:
Nov. 06, 1979
Filed:
Dec. 08, 1977
Applicant:
Inventors:
Reinold Schmitz, Odenthal, DE;
Klaus Wunderlich, Leverkusen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
2603145 ; 2603 / ;
Abstract
Copper phthalocyanine is obtained in high yields when phthalic acid or derivatives thereof, urea or urea derivatives, copper salts and ammonium molybdate or heated to 200.degree.-300.degree. C. without stirring, so slowly that the components are mixed sufficiently by heat convection during the liquid phase which occurs transitionally.