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. 05, 1977
Filed:
Feb. 04, 1976
Applicant:
Inventors:
Michihiro Tsujimoto, Tachikawa, JA;
Ryoichi Tsukahara, Yokohama, JA;
Tsutomu Nishizawa, Kamakura, JA;
Ichiro Okubo, Hachioji, JA;
Assignee:
Mitsui Toatsu Chemicals, Incorporated, Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 260 / ;
Abstract
Method of coloring an organic material with a naphthacenequinone derivative having the formula: ##STR1## wherein R.sub.1 and R.sub.3 are members selected from the group consisting of hydrogen, chlorine, hydroxyl or amino, R.sub.2 is a member selected from the group consisting of carboxyl or its derivative, sulfonamide, sulfonate and phenylsulfonate, X is a member selected from the group consisting of hydrazo and aromatic diamino. Organic materials with the compound have a brilliant hue with characteristic fluorescence and high sublimation fastness.