Back to results
US 6,051,360 AGranted
Dyestuffs and resin compositions
AssigneeMitsui Chemicals, Inc.
InventorsAkio Karasawa, Hisato Itoh
Life of this patent
Estimating the term…
Abstract
Dyestuffs represented by the below-described formula (1), that is, dyestuffs formed of a chromophoric nucleus and a bisphenol introduced therein have excellent solubility in solvents and binder resins, and can provide color filters having excellent transmittance characteristics and durability. ##STR1## wherein Dye represents a chromophoric nucleus, X represents a direct bond or a divalent connecting group, R.sup.1 to R.sup.10 and n are defined with the provision that one of R.sup.9 and R.sup.10 has 3 or more carbon atoms.
Claims14
A dyestuff represented by the following formula ( 1):
- ##STR146## wherein Dye represents an anthraquinone residuum, quinophthalone residuum, azo residuum or phthalocyanine residuum, X represents a direct bond or a divalent connecting group, R.sup.1 to R.sup.8 independently represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group or a substituted or unsubstituted alkoxy group, R.sup.9 and R.sup.10 independently represent a hydrogen atom or a substituted or unsubstituted alkyl group, and n stands for an integer of 1 to 4, with the provision that one of R.sup.9 and R.sup.10 has 3 or more carbon atoms.
Dependencies are inferred from the claim text.