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. 17, 1979
Filed:
Feb. 10, 1977
Teijin Limited, , JP;
Abstract
A compound of the formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a lower alkyl group; R.sub.2 and R.sub.5, independently from each other, represent a hydrogen atom, a halogen atom or a lower alkyl group; one of R.sub.3 and R.sub.4 represents an imido group of the formula ##STR2## in which Y represents a 1,2-phenylene, 1,2-naphthylene, 2,3-naphthylene or 1,8-naphtylene group optionally containing at least one substituent, and the other represents a hydrogen atom, a halogen atom or a lower alkyl group; R.sub.6 represents a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group; and X represents a halogen atom; with the proviso that when R.sub.3 represents the imido group, R.sub.2 represents a hydrogen or halogen atom. This compound can be prepared by reacting a corresponding quinaldine derivative with a tetrahalophthalic acid or a reactive derivative thereof. A yellow organic pigment comprising this compound as a coloring ingredient is useful for coloring polymeric materials.