摘要:
A (meth)acrylate ester includes a (meth)acrylate moiety having an ester oxygen, an anthraquinone moiety having a transmittance spectrum producing blue light, and a linking group covalently bound to the ester oxygen and to a ring of the anthraquinone moiety, the linking group including, as a first component: phenyl, naphthyl, a linear alkyl group having from 1 to about 6 carbons, a branched alkyl group having from 3 to about 6 carbons, a cycloalkyl group having from about 3 to about 20 carbons, or a substituted aromatic group.
摘要:
New dichroic dyestuffs for the guest-host type liquid crystal and new liquid crystal compositions containing said dyestuff having an excellent improved dichroism and being prepared by introducing at least one group selected from the group consisting of phenyl, cyclohexyl, phenylcarbonyloxy and phenyloxycarbonyl group into a phenyl, a cyclohexyl or a naphthyl group at its 4-position, which is arranged at the end of a known dichroic dyestuff molecule along the major axis of the molecule.
摘要:
The present invention relates to a compound of formula (I) where T, Q1, R1 to R6 and R30 are each as defined in claim 1, to their preparation and to their use.
摘要:
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.
摘要:
Liquid crystal compositions having guest anthraquinone-based dyes dissolved therein, are disclosed. The anthraquinone-based dyes have the general formula: ##STR1## wherein at least one of X and X' is a 5-membered ring connected to the lateral positions of the lateral benzene rings in the anthraquinone molecule, the five membered ring having the structure: ##STR2## wherein R is an alkoxy alkyl radical, a straight chain or branched chain alkyl radical, a phenyl radical, a benzyl radical and/or substituted derivatives of the foregoing radicals. The anthraquinone-based dyes of the invention may be used alone or with other compatible dyes as guest dyes to form various colors for coloring the host liquid crystal compositions. One preferred class of guest anthraquinone-based dyes which are dissolved in the host liquid crystal material, are various derivatives of 1,4-diamino-2,3-anthraquinone-dicarboximide.
摘要:
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.
摘要:
Disperse dyes, which produce dyeings of excellent thermomigration fastness, consisting of a chromophore and a lactam or oxime radical which detaches on heating to leave an isocyanate or isothiocyanate group, which reacts with a suitable group in the environment. The disclosed dyes are described by the formula ##STR1## where F is the radical of a dye which is free of water-solubilizing groups,B is a bridge member or a direct bond,Z is O or S andV is the radical of a group H--V, where H--V is an oxime of the formula ##STR2## or a lactam of the formula ##STR3## in which R.sup.1 and R.sup.2 are each independently of the other substituted or unsubstituted alkyl or aryl, orR.sup.1 and R.sup.2 together with the carbon atom linking them form a cycloaliphatic ring,R is hydrogen or alkyl andn is an integer from 4 to 11.