摘要:
Dyestuffs of the formula ##STR1## wherein R denotes hydrogen or alkyl,X denotes R, Cl or Br,m and p denotes 0 or 1,n denotes 2 to 4,A denotes oxygen or --NR-- andB denotes C.sub.1 -C.sub.8 -alkyl, alkenyl, cycloalkyl, aralkyl or aryl,are especially suitable for the dyeing of polyester-materials; they give deep yellow dyeings with good light fastness properties.
摘要:
This invention relates to diagnositc agents and methods for the detection of leukocytes in body fluids. In additional aspect, the invention provides a process for the production of such diagnostic agents.
摘要:
Azo dyestuffs, insoluble in water, are represented by the formula: ##STR1## wherein A represents the residue of a diazotizable benzene component carrying at least two substituents or the residue of a diazotizable heterocyclic component, R represents alkyl, B represents an unsubstituted or substituted alkyl group, and X represents hydrogen, chlorine, bromine, acylamino, benzoylamino, alkoxycarbonylamino, phenoxycarbonylamino, alkylsulfonylamino or phenylsulfonylamino, the dyestuff molecule being free of groups causing water solubility by formation of ions. These dyestuffs can be used for dyeing of hydrophobic fibers, in particular polyester fibers. Affinity is excellent and there are obtained bright, full-bodied shades very fast to wet tests, sublimation, abrasion and light.
摘要:
Novel yellow azo dye compositions and a liquid crystal composition containing the yellow azo dye composition are disclosed. The yellow azo dye composition, having terminal ester groups, has the general formula: ##STR1## wherein R and R' are acyl groups having the formula: ##STR2## and R.sub.2 is an alkyl or substituted alkyl wherein the alkyl has at least 4 carbon atoms, or R.sub.2 is an aryl, arylalkyl, substituted aryl or substituted arylalkyl. When the yellow azo dichroic dyes are used alone, or in combination with other dyes, as a guest in a host liquid crystal material, they form a novel liquid crystal composition for use in liquid crystal displays. The disclosure also embraces a method of improving the black color of dichroic dyes for use in black liquid crystal displays, wherein a dye composition having a mixture of dichroic dyes of various colors and containing at least one yellow azo dichroic dye, as described above, is added to a host liquid crystal material. The mixture of dichroic dyes of various colors must be one which absorbs radiation in the spectral range of about 400-700 nm to produce the substantially black color for use in black liquid crystal displays.
摘要:
The present invention relates to the synthesis of new dyes having the following general formula: ##STR1## wherein: D is the residue of a diazotizable component of the carbocyclic or heterocyclic seriesX is an ethylene group, optionally substituted by halogen-methyl, alkyl C.sub.1 -C.sub.4, aryl, aralkyl or CH.sub.2 OCO(HN).sub.n R (wherein R and n have the meanings hereinafter defined);R is alkyl C.sub.1 -C.sub.8 optionally substituted by halogen, CN,COOH; aryl optionally substituted by one or more atoms of halogen, alkyl C.sub.1 -C.sub.4, alkoxyl C.sub.1 -C.sub.4 ; alkoxyl C.sub.1 -C.sub.4 ; alkoxyl C.sub.1 -C.sub.8 ; Aryloxy; aralkoxy; cycloalkoxy; aralkyl; naphthyl optionally substituted by halogen; alkenyl C.sub.2 -C.sub.8, optionally substituted by halogen, CN, COOH;R.sup.1 and R.sup.2, either like or unlike each other, may be alkyl C.sub.1 -C.sub.4 optionally substituted by halogen or CN groups; aralkyl;R.sup.3 is H; halogen, alkyl C.sub.1 -C.sub.4 ; alkoxyl C.sub.1 -C.sub.4, optionally substituted.n is 0 or 1.
摘要:
Compounds of the formula ##STR1## wherein R.sub.1 is chloro, bromo, cyano, nitro, alkylsulfonyl, substituted alkylsulfonyl, phenylsulfonyl or substituted phenylsulfonyl,R.sub.2 is hydrogen, chloro or bromo,R.sub.3 is hydrogen, chloro, bromo or acylamino, with the proviso that at least one of R.sub.2 and R.sub.3 is hydrogen,R.sub.4 is hydrogen, alkyl, substituted alkyl, alkoxy or substituted alkoxy,Each of R.sub.5 and R.sub.6 is independently alkyl or substituted alkyl, wherein each substituent of substituted alkyl is independently chloro, bromo, cyano, hydroxy, alkoxy, chloroalkoxy, bromoalkoxy, cyanoalkoxy, formyloxy, alkylcarbonyloxy, substituted alkylcarbonyloxy, benzoyloxy, substituted benzoyloxy, alkoxycarbonyl, substituted alkoxycarbonyl, phenoxycarbonyl, substituted phenoxycarbonyl, alkoxycarbonyloxy, substituted alkoxycarbonyloxy, phenoxycarbonyloxy or substituted phenoxycarbonyloxy,R.sub.7 is alkyl or substituted alkyl,X is --CO--, --CO.sub.2 -- or --SO.sub.2 --, and n is 2, 3 or 4.These compounds are highly suitable for use as disperse dyes. As such they are employed for dyeing high molecular weight synthetic and regenerated organic fibers, either in loose form, as yarn or in the various textile forms. The dyes are of high tinctorial strength, have good affinity, are resistant to sublimation, and give dyeings of notably good light and wet fastness.
摘要:
A novel benzophenone type polymerizable dye containing a urethane bond and an ophthalmic lens containing the said polymerizable dye are disclosed. The benzophenone type polymerizable dye is shown by the following general formula (1) (wherein R1 and R2 are respectively and independently a hydrogen atom, a hydroxyl group, a carboxylic group, a C1 to C8 alkyl group, a C1 to C8 alkoxy group, a sulfonic acid group or a benzyloxy group, and m and n are respectively and independently an integer of 0 to 18. R3 is any of a polymerizable functional group of a vinyl group, an acryloyl group or a methacryloyl group).
摘要:
Novel yellow azo dye compositions and a liquid crystal composition containing the yellow azo dye composition are disclosed. The yellow azo dye composition, having terminal ester groups has the general formula: ##STR1## wherein R and R' are acyl groups having the formula: ##STR2## and R.sub.2 is an alkyl or substituted alkyl wherein the alkyl has at least 4 carbon atoms, or R.sub.2 is an aryl, arylalkyl, substituted aryl or substituted arylalkyl. When the yellow azo dichroic dyes are used as a guest in a host liquid crystal material, they form a novel liquid crystal composition for use in liquid crystal displays. The disclosure also embraces a method of improving the black color of dichroic dyes for use in black liquid crystal displays, wherein a dye composition having a mixture of dichroic dyes of various colors and containing at least one yellow azo dichroic dye as described above is added to a host liquid crystal material. The mixture of dichroic dyes of various colors must be one which absorbs radiation in the spectral range of about 400-700 nm to produce the substantially black color for use in black liquid crystal displays.
摘要:
This invention provides novel disperse dyes of formula I, ##SPC1##in which R.sub.1 signifies hydrogen, cyano, alkyl or alkoxy,R.sub.2 signifies unsubstituted alkylcarbonyloxy; alkylcarbonyloxy substituted by halogen, alkoxy, alkylcarbonyl, aryl or phenoxy; unsubstituted benzoyloxy, benzoyloxy substituted by one or more substituents selected from halogen, alkyl and nitro; unsubstituted alkoxycarbonyloxy; alkoxycarbonyloxy substituted by halogen, or phenyl; phenoxycarbonyloxy; 2-pyridyl or 4-pyridyl,R.sub.3 signifies formyl, unsubstituted alkylcarbonyl; alkylcarbonyl substituted by halogen, cyano, alkoxy, alkylcarbonyl, aryl or aryloxy; benzoyl; benzoyl substituted by one or more substituents selected from halogen, nitro and alkyl; unsubstituted alkoxycarbonyl; alkoxycarbonyl substituted by halogen, aryl or alkoxy; phenoxycarbonyl; unsubstituted alkylsulphonyl; unsubstituted phenylsulphonyl or phenylsulphonyl substituted by alkyl,Rings A and B may be substituted,And X.sub.1 and X.sub.2, which may be the same or different, each signifies an alkylene radical of 1 to 6 carbon atoms,Provided that the compounds contain no sulphonic acid groups.These dyes are useful for dyeing higher molecular weight, hydrophobic fibers, such as linear aromatic polyesters, synthetic polyamides, secondary cellulose acetate and cellulose triacetate on which they build up well and exhibit good fastness to light, thermofixation, sublimation, pleating, washing, perspiration, dry cleaning, lubricants, rubbing, cross dyeings, ozone, gas fumes and chlorine.
摘要:
Novel yellow azo dye compositions and a liquid crystal composition containing the yellow azo dye composition are disclosed. The yellow azo dye composition, having terminal ester groups has the general formula: ##STR1## wherein R and R' are acyl groups having the formula: ##STR2## and R.sub.2 is an alkyl or substituted alkyl wherein the alkyl has at least 4 carbon atoms, or R.sub.2 is an aryl, arylalkyl, substituted aryl or substituted arylalkyl. When the yellow azo dichroic dyes are used as a guest in a host liquid crystal material, they form a novel liquid crystal composition for use in liquid crystal displays. The disclosure also embraces a method of improving the black color of dichroic dyes for use in black liquid crystal displays, wherein a dye composition having a mixture of dichroic dyes of various colors and containing at least one yellow azo dichroic dyes as described above is added to a host liquid crystal material. The mixture of dichroic dyes of various colors must be one which absorbs radiation in the spectral range of about 400-700 nm to produce the substantially black color for use in black liquid crystal displays.