摘要:
An azo-compound, free acid form of which is represented by the following formula (I):wherein A and B represent, independently with each other, a phenyl having one or two groups selected from sulfo and carboxyl or a naphthyl having 1 to 3 sulfos; R1, R2, R3, R4, R5 and R6 represent, independently with each other, hydrogen, lower alkyl or lower alkoxy; and X represents -N=N- or -NHCO-, and a dye polarizing film containing the azo-compound in a polarizing film base, which exhibits a high polarizing performance and is excellent in durability and light fastness, are provided.
摘要:
Compounds known as "solid dispersed dyes" are synthesized in a two-phase system from which they disproportionate into a water-immiscible solvent phase, providing marker solutions. Marker solution is added to a petroleum fuel to introduce the compound thereto in dissolved form. Subsequently, extraction of the compound with acidic aqueous solution produces a chromophoric reaction which indicates presence of the compound in the petroleum fuel.
摘要:
Organosilicon polymers, including crosslinked polymers and crosslinkable prepolymers, of cyclic polysiloxanes, organic dyes, and, optionally, polyenes. The dyes include those with delocalized Pi electron systems linking electron donor groups and electron acceptor groups, and with at least two carbon--carbon double bond-containing pendant groups attached to at least two different sites from among the indicated delocalized Pi electron systems, donor groups, and acceptor groups.
摘要:
Diphenylamines of the formula ##STR1## where the ring A can be benzo-fused, and D is aryl or a five-membered aromatic heterocyclyl which contains one to three hetero atoms selected from the group consisting of nitrogen, oxygen and sulfur, in the heterocyclic ring and can be fused to a benzene, thiophene, pyridine or pyrimidine ring, X is N.dbd.N or, if D is aryl, is alternatively CH.dbd.CH, or D--X together is 1,2,2-tricyanovinyl, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy or halogen, R.sup.5 is prop-1-en-3-yl, acryloyl or methacryloyl, R.sup.6 and R.sup.7 are each hydrogen, C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, halogen, prop-1-en-3-yl, acryloyl, methacryloyl or oxiranylmethoxy, and Y is C.sub.1 -C.sub.20 -alkylene, polymers derived from the compounds, and their use in non-linear optics.
摘要:
A metal chelate compound of a dis-azo compound represented by the following formula (I) with a metal: ##STR1## (wherein A is a residue forming a heterocyclic ring together with the carbon atom and the nitrogen atom to which it is bonded, X is a residue forming an aromatic group together with the two carbon atoms to which it is bonded, and D is an aromatic residue which may have a substituent, or a heterocyclic amine residue which may have a substituent, and Y is a group having active hydrogen) and an optical recording medium having a recording layer provided on a substrate so that information can be written in and/or read out by a laser, wherein the recording layer contains a metal chelate compound of the dis-azo compound represented by the above formula (I), with a metal.
摘要:
Water-soluble metallized disazo compounds which, in the free acid form, are represented by the following formula: ##STR1## wherein R.sub.1 and R.sub.2 stand independently for chlorine or nitro, and X stands for phenyl which may be substituted with chlorine, methyl, lower alkoxy, hydroxyl or carboxyl, for use in dyeing.
摘要:
Disazo dyes for dyeing cellulose-containing fibers represented by the following general formula: ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a halogen atom, a nitro group, a cyano group, a thiocyanato group, a trifluoromethyl group, a formyl group, a lower alkoxycarbonyl group, a lower alkylsulfonyl group, a sulfamoyl group, an N-lower alkylsulfamoyl group or an N,N-di-lower alkylsulfamoyl group, R.sup.3 represents a hydrogen atom, a methyl group, a chlorine atom, a lower alkoxy group or an acylamino group, R.sup.4 represents a hydrogen atom, a methyl group, a chlorine atom or a lower alkoxy group, R.sup.5 represents a hydrogen atom, a lower alkyl group or a halogen atom, --X-- represents ##STR2## --SO.sub.2 -- or --CH.sub.2 --, and n represents 0 or 1. These dyes are capable of dyeing cellulose-containing fibers, particularly fiber blends composed of cellulose fibers and polyester fibers, blue to bluish green with good fastness properties.
摘要:
A color liquid crystal display device wherein a nematic liquid crystal to which a dichroic dye and an optically active substance have been added is used as the liquid crystal layer and the amount of said optically active substance added is so selected as to fall in a range making steep the threshold voltage characteristics of the liquid crystal.
摘要:
A dyestuff of the formula: ##STR1## in which A is thiazolyl, isothiazolyl, benzothiazolyl, benzisothiazolyl, thiadiazolyl, thienyl, or imidazolyl which is unsubstituted or substituted by one to three substituents selected from chlorine, bromine, methyl, phenyl, nitro, cyano, thiocyano, acetyl, carbalkoxy containing 2 to 5 carbon atoms and alkylsulfonyl containing 1 to 4 carbon atoms;X is hydrogen, chlorine, methyl, ethyl, methoxy, ethoxy, formylamino, acetylamino, propanoylamino, benzoylamino or cinnamoylamino;Y is hydrogen, methyl, ethyl, methoxy or ethoxy;R is hydrogen, alkyl containing 1 to 4 carbon atoms or the group of formula: ##STR2## said alkyl being unsubstituted or substituted by one hydroxy, alkoxy containing 1 to 4 carbon atoms, phenoxy, acetyloxy, cyano, alkylsulfonyl containing 1 to 4 carbon atoms, carbalkoxy containing 2 to 5 carbon atoms or alkoxycarbonyloxy containing 2 to 5 carbon atoms;N is equal to 1, 2 or 3; andZ is 2-cyanovinyl, 2-cyanoethyl or 2-chloro-2-cyanoethyl and which are useful as dispersion dyestuffs for dyeing and printing fibers of fibrous materials which are based on organic substances with high molecular weight, are hydrophobic and are wholly or partially synthetic.
摘要:
Substituted phenylazo compounds having a cyclohexylaminoacylanilide coupling component are useful as dyes for polyester textile materials on which the compounds exhibit improved dyeability, fastness to light, resistance to sublimation and improved brightness.