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:
Jan. 24, 1995
Filed:
Feb. 16, 1994
Applicant:
Inventors:
Max A Weaver, Kingsport, TN (US);
Wayne P Pruett, Kingsport, TN (US);
Gerry Rhodes, Piney Flats, TN (US);
Samuel D Hilbert, Jonesborough, TN (US);
William W Parham, Kingsport, TN (US);
Assignee:
Eastman Chemical Company, Kingsport, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08G / ;
U.S. Cl.
CPC ...
525437 ; 528272 ; 528288 ; 528289 ; 528290 ; 528291 ; 528292 ; 528298 ; 528299 ; 528302 ; 528307 ; 528308 ; 525437 ; 525442 ; 525444 ; 525471 ; 430109 ;
Abstract
This invention provides certain blue substituted 1,4-bis(2,6-dialkylanilino) anthraquinones in combination with selected red anthraquinone and anthrapyridone (3H-dibenz[f,ij]isoquinoline-2,7-dione) compounds which provide a toner system useful in imparting a desirable neutral to slightly blue hue to polyesters having a yellow appearance. The thermally stable colored compounds can have polyester reactive groups and are preferably incorporated into the polyester polymer structure during polymerization.