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:
A composition for use in thermally-addressable liquid crystal display devices, comprising a smectic liquid crystal material and a helichromic compound possessing both a chromophoric moiety and an optically-active moiety. The helichromic compound is a circularly dichroic dye capable of propagating incident visible light in a circularly polarized manner so that all polarizations of the incident light are absorbed. The composition comprising the helichromic compound can be utilized in thermally-addressable liquid crystal display devices to provide a display which operates at lower voltages, with faster response times, and higher contrast ratios.
摘要:
DIFFICULTLY WATER-SOLUBLE ANTHRAQUINONE DYESTUFFS, FREE FROM WATER-SOLUBILIZING GROUPS WHICH DISSOCIATE ACID IN WATER OF THE FORMULA WHERIN V1 REPRESENTS HYDROXYL OR -NH2, V2 REPRESENTS HYDROGEN, HYDROXYL, -NH2, LOWER AKYLAMINO, CYCLOHEXYLAMINO, PHENYLAMINO, PHENOXYPHENYLAMINO, PHENYLAZOPHENYLAMINO OR PHENYLAMINO RING-SUBSTITUTED BY CHLORINE LOWER ALKYL OR LOWER ALKOXY, X IS OXYGEN OR SULFUR, Y IS C1-C4-ALKYLENE OR
AND R REPRESENTS AN OPTIONALLY SUBSTITUTED ALIPHATIC CYCLOALIPHATIC OR AROMATIC RADICAL; THESE DYESTUFFS BEING SUITED PARTICULARLY FOR THE DYEING OF SYNTHETIC ORGANIC FIBERS, ESPECIALLY POLYETHYLENE GLYCOL TEREPHTHALATE FIBERS, AFFORDING DYEINGS ON THESE FIBERS WHICH HAVE GOOD FASTNESS PROPERTIES AND ESPECIALLY GOOD FASTNESS TO LIGHT AND SUBLIMATION.
摘要:
Difficulty water-soluble anthraquinone dyestuffs free from water-solubilizing groups which dissociate acid in water bearing in at least one Beta -position, either directly or by way of a bridging member, the grouping -Y-O-COOR, wherein Y represents an alkylene group, optionally substituted by a hydroxyl group and R represents an optionally substituted aliphatic, cycloaliphatic or aromatic radical; these dyestuffs being suited particularly for the dyeing of synthetic organic fibers, especially polyethylene glycol terephthalate fibers, affording dyeings on these fibers which have good fastness properties and especially good fastness to light and sublimation.
摘要:
Water swellable cellulosic fibers, for example, cotton, or blends or mixtures thereof with synthetic fibers, for example, polyester fibers, uniformly dyed to blue or turquoise shades with essentially water insoluble, nonvattable, 1,4-diamino-2,3disubstituted anthraquinone dyes, for example, 1,4-diamino-2,3bis(phenylthio)anthraquinone, said dyed fibers being fast to washing, dry-cleaning and crocking and having a reflectance color value (S'') after scour of at least about 2.