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:
Mar. 12, 1985
Filed:
Apr. 21, 1981
Applicant:
Inventors:
Klaus Hunger, Kelkheim, DE;
Manfred Pesenacker, Kelkheim, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
534742 ; 106 23 ; 1062 / ; 1063 / ; 106311 ; 534887 ;
Abstract
When diazotizing a p-amino-benzoic acid anilide, the anilide nucleus of which is substituted in its paraposition by carbamoyl, acetamino or chloro and coupling it onto 5-acetoacetylamino-benzimidazolone-(2) monoazo pigments are obtained having a high fastness to light, solvents, overlacquering and bleeding and a very high heat resistance.