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:
Jun. 21, 1977
Filed:
Apr. 21, 1976
Applicant:
Inventors:
Giampiero Pieri, Saronno (Varese), IT;
Filippo Maria Carlini, Novara, IT;
Camillo Paffoni, Pogno (Novara), IT;
Gioacchino Boffa, Novara, IT;
Assignee:
Montedison S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
260272 ; 208 12 ; 260 4221 ;
Abstract
A fluorescent azabenzanthronic dye is disclosed having the general formula (I): ##STR1## wherein X = --NH-- or --S--; and Y = --OCH.sub.3 or --OC.sub.2 H.sub.5. A process for the preparation of a dye of the general formula (I) is also disclosed. These dyes are useful in the bulk dyeing of polystyrene, polymethylmethacrylate, rigid PVC, polyethylene, acrylonitrile/butadiene/styrene copolymers, polycarbonates or mineral oils.