摘要:
In the process for the pad-dyeing or printing of materials consisting of, or containing, polyester or polyamide fibers or filaments, in which process the materials are padded or printed in common manner with aqueous baths or printing pastes of disperse dyestuffs, and the dyestuffs are subsequently fixed by the action of liquid or gaseous methylene chloride or both of the said phases of methylene chloride, the improvement that use is made of a dyestuff of the formula ##STR1## in which R.sub.1 stands for hydrogen, hydroxy, nitro or ##STR2## R.sub.2 and R.sub.3 each stand for hydrogen, chlorine or alkyl from 1 to 3 carbon atoms or an alkoxy group of from 1 to 3 carbon atoms, R.sub.4 represents hydrogen, chlorine, alkyl from 1 to 3 carbon atoms, an alkoxy group from 1 to 3 carbon atoms or --CH.dbd.CH--CH.dbd.CH-- forming the naphthalene ring, and R.sub.5 stands for hydrogen, alkyl from 1 to 3 carbon atoms or alkoxy from 1 to 3 carbon atoms, which dyestuffs have a solubility in methylene chloride of at least 2 g/l.
摘要:
Process for the continuous dyeing of a textile material web made of polyamide fibers using an 1:2 metal complex dyestuff, by padding the dyestuff together with a thermally crosslinkable bindersystem on the basis of a combination of acrylic acid derivatives with a highly etherified precondensation product of melamine and formaldehyde, a crosslinkable protective colloid in the presence of a catalyst or an acid-yielding agent that give an acid effect only under heat, from an aqueous liquor under weakly alkaline conditions, and fixing it on the material by means of dry heat.
摘要:
A process for the continuous dyeing of textile materials consisting of or containing wool with reactive dyestuffs according to a steam fixation method, by impregnating the fibrous material at pH values of from 6.5 to 7.5 with an aqueous liquor containing reactive dyestuffs of the methyltaurino-ethyl-sulphone type, and fixing the dyestuff without intermediate drying of the material by treating with saturated or largely saturated steam at temperatures of from 110.degree. to 120.degree. C.
摘要:
Process for drying chemicals which comprises treating the chemicals with a burnable organic liquid and burning off the liquid to dry the chemicals.The process is particularly useful for drying chemicals such as dyestuffs, pharmaceuticals and organic intermediates by applying an aqueous methanol solution to the chemicals and burning off the methanol to dry the chemicals.
摘要:
Process for the fixation of dyestuffs on textile materials of synthetic, regenerated or native fibers or of mixtures thereof, in which the textile material treated with a dyestuff preparation is introduced into a chamber and it is dwelled there, batched or cuttled up under pressure-steam.
摘要:
Hitherto there has been no practical pad-dwell process for wool piece goods which could be carried out without using large amounts of textile assistants. In addition, it has been necessary with all these processes to supply energy. Furthermore, large amounts of urea have always been used, which inevitably resulted in a high degree of waste water pollution. It has now been recognized according to the invention that satisfactory results can be obtained in the dyeing of wool piece goods with reactive dyes by effecting the padding operation with the dye solutions within the pH range from 1.5 to 4 and at room temperature and the subsequent dwell operation to obtain dye fixation without supply of heat. To prevent the formation of a frosting effect and to obtain deeper shades it is expediently possible also to add to the padding liquor nitrogen-containing ethoxylation products, in particular ethoxylated fatty amines, and/or alkyl polyglycol ethers.
摘要:
In the dyeing of cellulose knitted fabrics in hose form, according to a two-bath procedure, with azo dyes produced on the fiber by coupling of their formation components, it was hitherto impossible on an industrial scale to forward the developing liquor in a sufficiently rapid manner into the interior of the textile hose, after impregnation of said tubular goods in a winch beck using the exhaust technique. Dyestuff development without intermediate drying was impeded by the insufficient liquor uptake of the flattened textile material that had previously been impregnated on subsequent slop-padding wet-in-wet with the developing liquor.By incorporation of an auxiliaries' combination comprising homo- or copolymers of acrylic acid amide and a wetting agent in said developing liquor, the liquor uptake thereof by the moist fiber material is increased and the penetration rate of this liquor during the coupling is incited in such a manner that textile hoses which exhibit even, well penetrated dyeings are obtained.Dyeing of tubular knitted fabrics, especially in hose form, with azo developing dyes has become safe only in accordance with this invention.
摘要:
Continuous dyeing of cellulose knitted fabrics in hose form, according to a two-bath procedure and without intermediate drying, with azo dyes produced on the fiber by coupling of their formation components could be realized hitherto on an industrial scale in exceptional cases only. For the most part this dyeing method failed generally due to the insufficient liquor uptake of the flattened textile material that had previously been impregnated, on subsequent slop-padding wet-in-wet with the developing liquor.By incorporation of a combination comprising homo- or copolymers of acrylic acid amide and a wetting agent into the impregnation bath and the developing liquor, the liquor uptake thereof by the moist fiber material, both in the course of the impregnation phase and once more in the slop-padding operation for developing the dyes too, is increased and the penetration rate of the liquor during the coupling is improved in such a manner that textile hoses which exhibit even, well penetrated dyeings are obtained.Dyeing of tubular knitted fabrics, especially in hose form, with azo developing dyes has become feasible only in accordance with this invention. The process may be carried out as well in semicontinuous operation.
摘要:
A process for the treatment of textiles in rope form with gaseous and/or liquid treating agents in a jet dyeing unit, wherein the charging of the jet apparatus with the material rope as well as the material transport in the unit is effected by directing a gas current, especially steam, issuing from nozzles under excess pressure onto the fibrous material. To start the process, the gas current and the fluid current may be used alternately or may be combined. The process is particularly suitable for the isothermal dyeing of textiles in rope form with heat-fixable dyestuffs in accordance with the batchwise exhaustion method.
摘要:
Continuous dyeing of textile webs of cellulose fibers and of mixtures thereof with synthetic fibers using reactive dyes, by applying onto the textile material an aqueous solution of at least one reactive dye in conjunction with a mixture of fixation agents of a liquid alkali water glass having a density from 37.degree. to 60.degree. Be and an alkali hydroxide solution having a density from 30.degree. to 45.degree. Be, introducing the treated material into a tank where it is heated and subjected to the action of humid heat of 81.degree. to 95.degree. C. for 5 to 180 seconds, removing it continuously from the tank and then terminating the dyestuff fixation by brief steaming or by a brief immersion into a hot sodium silicate solution.