Abstract:
The invention discloses new substituted anthraquinone dyes that may be useful as cellular stains. In some aspect of the invention, the nuclear stains are useful for staining the nuclei of dead or fixed cells. Another aspect of the invention relates to substituted anthraquinone dyes comprising an enzyme substrate moiety that is transformable or cleavable by an enzyme such that the transformation or cleavage of the substrate moiety causes a detectable change in the functionality or spectral properties of the dye.
Abstract:
An object of the present invention is to provide an ink containing an azo compound which is excellent in solubility in a solvent and has a high extinction coefficient. The present invention relates to an ink comprising a solvent having a relative permittivity of 3 or less, as measured at a frequency of 1 kHz and at 22° C. and having a solubility in water of 20 mg/L or less at 25° C. and a specific azo compound.
Abstract:
Direct dyes having a quaternary center with a long aliphatic chain, compositions containing those dyes, and the process of using them to dye hair are disclosed. These dyes have a higher affinity for hair and are more shampoo stable than conventional direct dyes, and produce pleasing uniform dyeing.
Abstract:
A liquid crystal composition comprising a host liquid crystal material and at least one guest novel anthraquine dye dissolved in said host liquid crystal material has a high order parameter, sufficient solubility in the host liquid crystal and high stability.
Abstract:
A composition for nematic liquid crystal color display elements, said composition comprising at least one anthraquinonic dye represented by the following formula ##STR1## wherein X and Y are identical or different and represent --NH.sub.2 or --OH; Z represents halogen, --OR, --NHR, ##STR2## --CONHR.sub.2 or --COOR.sub.2, in which R represents an alkyl group having 1 to 15 carbon atoms or a lower alkyl group optionally substituted by --OH, ##STR3## R.sub.1 represents hydrogen, halogen, --OH, --OCH.sub.3, an alkyl group having 1 to 15 carbon atoms, or a methoxy group optionally substituted by ##STR4## and R.sub.2 is a phenyl group, an alkyl group having 2 to 5 carbon atoms or a cyclohexyl group; and n is an integer of 1 or 2 provided that when X is --NH.sub.2 and Y is --OH, and when X and Y are both --OH, n is an integer of 1, and when n represents an integer of 2, the two Z's may be identical or different dissolved in at least one nematic liquid crystal.
Abstract:
Dyestuffs, which are free from nitro groups and sulphonic acid groups, of the formulaF--Z--(OA).sub.n --OR IwhereinF denotes an anthraquinone nucleus which contains at least one auxochromic group in the .alpha.-position,Z denotes a direct bond or a bridge member,A denotes alkylene,R denotes alkyl, aralkyl, cycloalkyl, aryl or acyl andn denotes 3 to 8,with the proviso that R does not represent aralkyl if n denotes the number 3 and the number of the auxochromic groups is two, have a melting point below 140.degree. C., in particular below 100.degree. C., and are outstandingly suitable for dyeing and printing synthetic fibre materials, in particular those of polyesters, on which they produce dyeings with good fastness to sublimation, washing and light.The dyestuffs are advantageously employed in the form of liquid or pulverulent preparations which contain, in addition to the dyestuff, emulsifying polar/non-polar compounds and, if appropriate, formulating agents and extenders.These preparations are distinguished by very high solubility in cold water and require no further dyeing auxiliaries such as, for example, carriers.
Abstract:
A process for preparing aminoanthraquinones of high purity, which comprises catalytically hydrogenating nitroanthraquinones in the suspended state in an aqueous medium in the presence of a hydrogenating catalyst. In a preferred embodiment, the catalytic hydrogenation may be carried out in the presence of an organic or inorganic base, followed, if desired, by oxidizing the hydrogenation product.
Abstract:
Exhaust process for the dyeing of synthetic fibre materials from organic water-immiscible solvents wherein are used as dyestuffs sulphonamide group containing disperse dyestuffs. There are obtained without originating waste waters dyeings with excellent fastness to washing, rubbing, light and sublimation.
Abstract:
Exhaust process for the dyeing of synthetic fiber materials from organic water-immiscible solvents wherein are used as dyestuffs sulphonamide group containing disperse dyestuffs. There are obtained without originating waste waters dyeings with excellent fastness to washing, rubbing, light and sublimation.
Abstract:
Process for the bulk dyeing of polyesters, characterised in that the dyestuffs used are anthraquinone derivatives of the formula ##SPC1##Wherein Q denotes one of the bridge members --O-- or --CO--, R denotes hydrogen or an alkyl group containing 1-4 carbon atoms, Ar denotes an aryl group, n denotes a number from 1 to 4, X, Y and Z denote an amino, hydroxyl, alkoxy, aryloxy, alkylmercapto, arylmercapto, arylamino or aroylamino group or halogen and a, b and c each denote zero or a number from 1 to 4, with the sum of n+a+b+c being a number from 1 to 6.
Abstract translation:聚酯的本体染色方法,其特征在于所用的染料是下式的蒽醌衍生物,其中:WH代表Q表示桥状基团-O-或-CO-之一,R表示氢或含有1-4个碳原子的烷基, Ar表示芳基,n表示1至4的数,X,Y和Z表示氨基,羟基,烷氧基,芳氧基,烷基巯基,芳基巯基,芳基氨基或芳酰基氨基或卤素,且a,b和c各自表示0或 1〜4的数,n + a + b + c的和为1〜6的数。