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:
Sep. 15, 1987
Filed:
Sep. 09, 1986
Ernst Spietschka, Idstein, DE;
Frank Prokschy, Frankfurt am Main, DE;
Hoechst Aktiengesellschaft, , DE;
Abstract
Pigments of the quinacridonequinone series comprising 99-30 mole percent of a quinacridonequinone of the formula (1) ##STR1## in which R denotes a hydrogen or chlorine atom or a methyl group, 0-60 mole percent of a quinacridone of the formula (2) ##STR2## in which R has the above-mentioned meaning, and 1-10 mole percent of a 7,15-dihydro-pyrido-(2,1-b)-(1',2'; 1,2)-pyrimido-(4,5-g)-quinazoline-7,15-dione of the formula (3) ##STR3## in which R has the above-mentioned meaning, the added compounds of the formulae (2) and (3) being present in the crystal lattice of the quinacridonequinone of the formula (1), process for their preparation and their use for coloring plastic materials and for preparing automotive paints for metallic coatings.