摘要:
A dye, such as a fluorescent dye, is incorporated into polymer microparticles using a solvent system composed of a first solvent in which the dye and the microparticle polymer are soluble, a second solvent in which the dye and the microparticle polymer are not or only weakly soluble, and a third solvent in which the dye and the microparticle polymer are not or only weakly soluble. The first and second solvents are immiscible with each other, or at most partially miscible. The third solvent is miscible with the first and second solvents. The formulation provides substantially complete partitioning of the dye to the microparticles. The method may be used to obtain dyed polymer microparticle formed of cross-linked or non-cross-linked polymers. Libraries are provided comprising two or more sets of microparticles of different dye loadings. Fluorescent core-shell microparticles are produced from a mixture of microparticle cores incorporating one or more fluorescent dyes, a polymerization mixture comprising at least one polymerizable shell monomer, at least one free radical polymerization initiator comprising a water-insoluble oxidizing agent, and at least one water-soluble reducing agent.
摘要:
A method for dry-cleaning garments which comprises treating the garments with a mixture of dipropylene glycol tertiary-butyl ether (DPTB) and water for a period of time sufficient to effect dry-cleaning, wherein the weight ratio of DPTB to water is at least 9:1.
摘要:
A method of dry-cleaning garments which comprises treating the garments with a mixture of propylene glycol tertiary-butyl ether or propylene glycol n-butyl ether and water.
摘要:
Compounds of the general formula I ##STR1## where B.sup.2 and B.sup.2 independently of one another are hydrogen, C.sub.1 -C.sub.6 -alkyl which may or may not be interrupted by oxygen or sulfur and is unsubstituted by hydroxyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylmercapto, cyano, phenylmercapto (which is unsubstituted by chorine or methyl), unsubstituted or substituted carbamoyl or a carboxylic acid ester group, benzyl or phenylethyl which are unsubstituted or substituted in the ring by chlorine, bromine, methyl, ethyl, methoxy or ethoxy, phenyl which is unsubstituted or substituted by chlorine, bromine, hydroxyl, methoxy, ethoxy, methyl, C.sub.1 -C.sub.4 -alkylmercapto, C.sub.1 -C.sub.4 -alkanoylamino or amino, unsubstituted or substituted carbamoyl or a carboxylic acid ester group,B.sup.2 may in addition be cyano, C.sub.2 -C.sub.4 -alkanoyl, benzoyl which is unsubstituted or substituted by chlorine, methyl, methoxy or ethoxy, C.sub.1 -C.sub.6 -alkylsulfonyl, or phenylsulfonyl, which is unsubstituted or substituted by chlorine, bromine, methyl, methoxy, ethoxy, amino, C.sub.1 -C.sub.4 -alkanoylamino, C.sub.1 -C.sub.4 -alkylsulfonyl or benzoylamino,B.sup.1 and B.sup.2 together may also be a saturated 5-membered or 6-membered ring which may or may not contain oxygen or sulfur,X is oxygen or imino andthe ring A may be substituted.Such compounds are outstandingly suitable for dyeing synthetic fibers and plastics.
摘要:
New disperse dyestuffs which may be used especially for the coloration of artificial or synthetic materials correspond to the general formula: ##STR1## in which R.sub.1 represents a hydrogen or halogen atom or a nitro, alkyl or alkoxy group and R.sub.2 represents a hydrogen or halogen atom or a cyano group. These dyestuffs provide colorations of very fast yellow to orange shades on polyester fibers.
摘要:
Synthetic fibre materials, especially polyester fibres, are dyed in yellowish to orange-red shades with good fastness to light and washing if dyestuffs of the formula ##STR1## wherein K denotes the radical of a coupling component of the indole series,R denotes alkyl, cycloalkyl, aralkyl or aryl and the ring A can contain further non-ionic substituents which are customary in dyestuff chemistry, are used for dyeing.
摘要:
Disperse dyestuffs of the formula ##STR1## wherein Z is an alkyl, aralkyl, cycloalkyl, or aryl radical andR.sub.1 represents H, NO.sub.2, CN, CF.sub.3, halogen, alkyl SO.sub.2 X.sub.1, SO.sub.2 NX.sub.2 X.sub.3, SO.sub.2 OX.sub.1, CONX.sub.2 X.sub.3, SCN, OX.sub.1, SX.sub.1 or NX.sub.2 X.sub.3,R.sub.2 represents H, NO.sub.2, halogen, alkyl, OX.sub.1 or aryl,R.sub.3 and R.sub.4 independently of each other represent H, halogen, alkyl, SO.sub.2 X.sub.1, SO.sub.2 NX.sub.2 X.sub.3, SO.sub.2 OX.sub.1, COX.sub.1, CONX.sub.2 X.sub.3, NX.sub.1 X.sub.2, OH, OX.sub.1 or aryl,R.sub.5 represents H, halogen, alkyl, OX.sub.1 or aryl andR.sub.6 represents H or alkyl andX.sub.1 denote alkyl, aryl or aralkyl andX.sub.2 and X.sub.3 denote H, alkyl, cycloalkyl, aryl or aralkyl with the proviso that Z represents aralkyl, aryl or substituted alkyl when R.sub.1 denotes SO.sub.2 NX.sub.2 X.sub.3 or SO.sub.2 OX.sub.1.The dyestuffs are suitable for dyeing synthetic fibre materials, especially polyesters, which are dyed in yellow to orange-red shades of good tinctorial strength and with good fastness properties in use, such as, for example, fastness to light and wet processing.
摘要:
An azo compound that is free from sulphonic acid groups of the formula ##STR1## in which D represents the radical of a diazo component, A represents an optionally substituted, 1,4-phenylene radical, R.sub.1 represents an optionally substituted alkyl radical, R.sub.2 represents an optionally substituted alkylene radical, Alk represents an alkylene radical of 1-4 carbon atoms and Y represents an imino group, a sulphur atom or an oxygen atom and ring B may be substituted by bromine, fluorine, chlorine atoms, cyano, nitro, trifluoromethyl, alkyl, alkoxy, acylamino, acyloxy, carbalkoxy, optionally N-alkylated carbamoyl and optionally N-alkylated sulphamoyl groups and by a benzo residue. The compounds dye polyester fibres in yellow, red or blue shades with good fastness.
摘要:
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.