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:
Apr. 15, 1980
Filed:
Jan. 29, 1979
Fabrizio Merlo, Saronno, IT;
Giorgio Bornengo, Novara, IT;
Montedison S.p.A., Milan, IT;
Abstract
The present invention concerns a class of compounds useful as dispersed dyes and insoluble in water, having the general formula (I): ##STR1## wherein the symbols have the following meaning: R is selected from the group consisting of an alkyl group having up to 5 carbon atoms, a group --CH.sub.2 --COOX, wherein X stands for an alkyl group having up to 4 carbon atoms; a group ##STR2## and a group --CH.sub.2 --CH.sub.2 --CN; R.sub.1 represents an H atom, a halogen atom (preferably Cl or Br) and an NO.sub.2 group. The dyes of this invention, are particularly suited for the dyeing and printing of synthetic fibres, in particular of polyester fibres. The shades vary from yellow-green to orange. They possess an excellent affinity as well as an excellent fastness to light both in the deep tones as well as in the bright tones. Good fastnesses are also found against sublimation, to solvents and to washing.