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. 08, 2010
Filed:
Sep. 21, 2005
Takashi Deno, Nishinomiya, JP;
Thomas Eichenberger, Basel, CH;
Joachim Voigt, Efringen-Kirchen, DE;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The present invention relates to the field of color filters and LCDs. More specifically, the invention relates to a colorant composition for making color filters comprising pyrimido[5,4-g]pteridine derivatives of formula (I) wherein A1, A2, A3, and A4 are each independently of the others —NR1R2, wherein R1 and R2 are each independently of the others hydrogen, CrC8alkyl, —CO—C1-C8alkyl, —CO—Ce—Cuaryl, —COO—C1-C8alkyl, —COO—Ce—CMaryl, —CONH-d-Cβalkyl or —CONH—Ce-CMaryl, Or A1, A2, A3, and A4 are each independently of the others —OH, —SH, hydrogen, CrC8alkyl, CrC8alkoxy, or C6-C14aryl or —O—C6-C14aryl each unsubstituted or mono- or poly-substituted by halogen, nitro, cyano, —OR10, —SR10, —NR10R11, —CONR10R11, —COOR10, —SO2R10, —SO2NR10R11, —SO3R10, —NR11COR10 or by —NR11COOR10, wherein R10 and R11 are each independently of the others hydrogen, CrC8alkyl, C5-C12cycloalkyl or C2-C8-alkenyl; and to their use for color filter production and to color filters comprising said pyrimido[5,4-g]pteridine derivatives of formula (I).