31results about How to "Reduce dye content" patented technology

The invention relates to the technical field of special polymeric dyes for leather, fur and leather and fur products, in particular to a preparation method for a polymeric dye based on hyperbranched polyamine-ester. The preparation method comprises the following steps: by taking alcohol amine and acrylate as raw materials, reacting the alcohol amine and the acrylate, and removing a solvent after the reaction is ended to obtain an AB2 type monomer; reacting the AB2 type monomer, a catalyst and a micromolecular polyhydroxy compound to obtain hydroxyl-terminated hyperbranched polyamine-ester, and performing modification by using acid anhydride; reacting acid anhydride modified hyperbranched polyamine-ester with an active dye to obtain the polymeric dye. Compared with the prior art, the obtained polymeric dye can effectively improve the dyeing fastness, washing resistance, sweat resistance and other performance of the leather, the fur and the leather and fur products, the dye utilization rate is increased, and the content of dyes in waste liquor is reduced.

The invention relates to a making method of a high-color fastness dye-free ultrafine fiber synthetic leather base. The making method comprises the following steps: base cloth decrement, impregnation in colored aqueous polyurethane, polyurethane solidification and post-treatment. The ultrafine fiber synthetic leather base made in the invention has the advantages of full color, high color fastness and no dyeing. The making method of the ultrafine fiber synthetic leather base has the advantages of small dye use amount in the making process, high dye utilization rate, and no use of toluene, dimethyl formamide or other organic solvents, and is environmentally friendly.

The invention discloses a preparation method of a dancing rainbow yarn fiber Raschel blanket. The preparation method comprises the following steps of (1) weaving: performing weaving on a high-speed warp knitting machine by adopting dancing rainbow yarn fibers as plush yarns and polyester fully-drawn yarns as bottom yarns in a full-penetration same-direction yarn laying manner to obtain a gray fabric; (2) pre-finishing: carrying out wool smoothing pre-shaping, wool reversing pre-lustring, wool smoothing high carding, and wool reversing and wool smoothing alternating lustring on the gray fabricto obtain a pre-finished gray fabric; (3) dyeing and finishing: carrying out wool reversing dyeing on the grey cloth subjected to pre-finishing, washing with water, performing softening and dehydrating to obtain dyed and finished grey fabric; and (4) after-finishing: enabling the dyed and finished gray fabric to be subjected to drying and shaping, wool smoothing and wool reversing, wool reversingfluffing, front face lustring, front face ironing and shearing, reverse face lustring, reverse face ironing and shearing and then to be tailored and sewn, and obtaining the dancing rainbow yarn fiberRaschel blanket. The dancing rainbow yarn fiber with good dyeability is adopted as the raw material, the Raschel blanket with diversified colors and high color fastness can be prepared, and the marketrequirements are fully met.

The invention discloses a snow top dye and a preparation method thereof. The preparation method of the snow top dye comprises the following steps: adding a dispersing agent NNO, a dispersing agent SN, a penetrating agent T and anhydrous sodium sulphate into a disperse dye in parts by weight, mixing, and dull polishing, drying and crushing the mixture to obtain the dry crushed disperse dye; and adding an acid dye, a nonionic surfactant, a fluorescent brightener, white dextrin and anhydrous sodium sulphate into the crushed disperse dye, and sufficiently mixing and stirring the ingredients at first preset time to obtain the powder snow top dye. The snow top dye prepared by using the preparation method disclosed by the invention is good in dyeing performance and environment protection performance.

The invention provides a fur-with-frost dye and a preparation method thereof. The fur-with-frost dye is prepared from the following raw materials in parts by mass: 20-50 parts of acid dye, 10-20 parts of ammonium sulfate, 2-10 parts of fluorescent whitening agent, 2-5 parts of penetrant, 2-5 parts of sodium xylene sulfonate, 10-20 parts of white dextrin and 20-35 parts of anhydrous sodium sulfate; the preparation method of the fur-with-frost dye comprises the following steps: (A) weighing the raw materials and mixing for 1-3 hours to obtain a first powdery mixture; (B) pouring the first mixture into a pelletizer for pelleting to obtain the granular fur-with-frost dye. The dye-uptake of the prepared fur-with-frost dye is increased in the dyeing process, the content of the dye in the waste liquid is effectively reduced and the harm to the environment and the human body is reduced. The dye is prepared into the granular form, and therefore, the dust is greatly reduced and the harm to the using environment and the operating workers is reduced; the prepared fur-with-frost dye has excellent dyeing property and environmental protection performance.

The invention discloses a synthesis method for waterborne aliphatic hyperbranched polyester type polymer dye and belongs to the technical field of fine chemical industry. The waterborne aliphatic hyperbranched polyester type polymer dye is obtained through the following steps: enabling 2,2-dimethylol propionic acid and a small molecule polyhydroxy compound to react under the action of a catalyst according to a certain mole ratio so as to obtain hydroxyl-terminated hyperbranched polyester; modifying hydroxyl-terminated hyperbranched polyester through acid anhydride; enabling hyperbranched polyester modified by acid anhydride to react with reactive dye so as to obtain the waterborne aliphatic hyperbranched polyester type polymer dye. By adopting the waterborne aliphatic hyperbranched polyester type polymer dye prepared through the synthesis method disclosed by the invention, the problems that dye is poor in binding fastness and residual dye in waste liquid is high in concentration in the conventional leather manufacturing and fur industry are solved, colour fasteness, washing resistance and the like of leather products are effectively improved, the utilization ratio of dye is increased and the content of dye in dyeing waste liquid is reduced.

The invention discloses a preparation method of Yidalun fiber Raschel blanket. The steps are as follows: (1) Weaving: using Yidalun fiber as plush yarn, polyester full-drawn yarn as bottom yarn, and using full-wearing same-direction (2) Pre-finishing: Pre-finish the gray cloth after pre-shaping along the wool, pre-ironing against the wool, high combing along the wool, and alternating ironing against the wool to obtain the pre-finishing (3) Printing and softening: the gray cloth after pre-finishing is printed, steamed, washed and softened, and then dehydrated to obtain the printed gray cloth; (4) Finishing: the gray cloth after dyeing and finishing is dried Shaping, combing along the wool, fluffing against the wool, ironing on the front, ironing on the front, ironing on the back, ironing on the back, cutting and sewing the Yidalun fiber raschel blanket. The invention uses Yidalun fiber as a raw material to realize water-less / water-less printing and washing processes, has a high utilization rate of dyestuffs, and finally produces a raschel blanket with rich patterns and fully meets market demands.

The invention relates to a making method of a high-color fastness dye-free ultrafine fiber synthetic leather base. The making method comprises the following steps: base cloth decrement, impregnation in colored aqueous polyurethane, polyurethane solidification and post-treatment. The ultrafine fiber synthetic leather base made in the invention has the advantages of full color, high color fastness and no dyeing. The making method of the ultrafine fiber synthetic leather base has the advantages of small dye use amount in the making process, high dye utilization rate, and no use of toluene, dimethyl formamide or other organic solvents, and is environmentally friendly.

The invention discloses a preparation method of a Raschel blanket made of fidelon suction and discharge silk fiber. Weaving with three-needle and four-needle weft-inserted yarn in the same direction to obtain the gray cloth; (2) Pre-finishing: the gray cloth is first ironed and then pre-shaped to obtain the gray cloth after the pre-finishing; (3) The printed soft : Printing, steaming, color fixing, washing, softening, and dehydration of the gray cloth after pre-finishing to obtain the printed gray cloth; Fluffing, front ironing, front ironing, back ironing, back ironing, cutting and sewing to obtain Fudalun absorbent silk fiber raschel blanket. The invention adopts Fidelon absorbing and discharging filament fiber as raw material, and the prepared raschel blanket has good hygroscopicity, perspiration and remarkable anti-ultraviolet performance, good use comfort and rich patterns.

The invention provides a salt-free cold pad-batch dyeing method of unboiled and bleached cotton fibers, which belongs to the field of cotton fiber printing and dyeing. The method is prepared by placing reactive dyes and alkaline substances in a mixed solution of an alcohol organic solvent-water system Dye liquor; put the unboiled and bleached cotton fiber in the prepared dye liquor, and pad the dye liquor by two dipping and two padding methods; roll the dyed unboiled and bleached cotton fiber on a coiling machine, and the coiled cotton fiber Unboiled bleached cotton fibers are wrapped in plastic film and then stacked; after stacking, they are soaped, washed with hot water, washed with cold water and dried; this method combines the characteristics of fast dyeing rate and high dyeing rate in the ethanol-water system Under the high permeability of ethanol, reactive dyes can be used to quickly dye uncooked bleached cotton fibers by padding, and at the same time, under the condition of stacking at room temperature, the dyed cotton fibers can slowly co-exist with hydroxyl groups on cellulose. The valence bond is combined for dyeing, and the color fixation rate of the reactive dye in the alcohol organic solvent-water system is improved under normal temperature conditions.

The invention relates to an acid dye dyeing method for cotton textiles. Cotton textiles are first treated with an acidified carbocation polymer nanosphere solution, and then dyed with an acid dye for color fixation. The preparation method of the acidified carbon nanospheres is as follows: the carbon nanospheres are mixed with an acidic solution, and then subjected to ultrasonic treatment, then standing and soaking, then heating, condensing and refluxing, and repeated washing and separation until the pH is neutral. Acidic dyes are modified with an acidified carbocationic polymer nanosphere solution, so that the cationic polymer nanospheres are used to treat cotton textiles to achieve dyeing with acid dyes, and overcome the poor water resistance, light fastness and abrasion resistance of dyes and dye wastewater Problems such as high dye content in the medium.

The invention discloses a reactive dye and a preparation method thereof. In order to achieve the above purpose, the reactive dye is prepared from a reactive dye and hydroxy amide carboxylate in a molar ratio N of 0.1: 1 to 2: 1, wherein the hydroxy amide carboxylate is prepared by neutralizing the pH value of a reaction product of hydramine and dicarboxylic anhydride in an equal molar ratio in a solvent to 8-10 by an alkaline solution. The method for preparing the reactive dye comprises the following steps: (1) taking the hydramine and the dicarboxylic anhydride in equal molar ratio to carry out amidation, neutralizing by using the alkaline solution until pH value is 8-10, and removing the solvent to obtain the hydroxy amide carboxylate; (2) reacting the hydroxy amide carboxylate with the reactive dye, and drying and grinding the product to obtain the reactive dye. The reactive dye and the preparation method of the reactive dye can be used for solving the problem that the existing reactive dye is hard to be applied in the leather dye; meanwhile, the color fastness of the leather is improved; the concentration of the residual dye of the dye waste solution is improved.

The invention relates to the technical field of special polymeric dyes for leather, fur and leather and fur products, in particular to a preparation method for a polymeric dye based on hyperbranched polyamine-ester. The preparation method comprises the following steps: by taking alcohol amine and acrylate as raw materials, reacting the alcohol amine and the acrylate, and removing a solvent after the reaction is ended to obtain an AB2 type monomer; reacting the AB2 type monomer, a catalyst and a micromolecular polyhydroxy compound to obtain hydroxyl-terminated hyperbranched polyamine-ester, and performing modification by using acid anhydride; reacting acid anhydride modified hyperbranched polyamine-ester with an active dye to obtain the polymeric dye. Compared with the prior art, the obtained polymeric dye can effectively improve the dyeing fastness, washing resistance, sweat resistance and other performance of the leather, the fur and the leather and fur products, the dye utilization rate is increased, and the content of dyes in waste liquor is reduced.

The invention discloses a preparation method of a Raschel blanket made of Wuhong yarn fiber. The steps are as follows: (1) Weaving: using Wuhong yarn fiber as plush yarn, polyester full-drawn yarn as bottom yarn, and using full-wearing same-direction (2) Pre-finishing: Pre-finish the gray cloth after pre-shaping along the wool, pre-ironing against the wool, high combing along the wool, and alternating ironing against the wool to obtain the pre-finishing (3) Dyeing and finishing: the gray cloth after pre-finishing is dyed in reverse wool, washed and softened, and then dehydrated to obtain the dyed and finished gray cloth; (4) Finishing: The gray cloth after dyeing and finishing is dried and shaped, smoothed Wool combing, reverse wool fluffing, front ironing, front ironing, back ironing, back ironing, cutting and sewing to obtain the Wuhong yarn fiber raschel blanket. The invention adopts the rainbow yarn fiber with good dyeability as a raw material, and can prepare a raschel blanket with various colors and high color fastness, which fully meets the market demand.

The invention belongs to the technical field of textile waterless dyeing and specifically discloses a textile dye as well as a preparation method and a waterless dyeing method of the textile dye. Thetextile dye is mainly prepared from the following components in parts by weight: 1-10 parts of toner, 3-30 parts of organic solvent, 3-5 parts of triethylene glycol, 2-4 parts of glycerin, 0.5-5 partsof sodium lignin sulfonate, 2-5 parts of sodium metanitrobenzene sulfonate, 1-10 parts of ammonium polyacryloyldimethyl taurate, 1-10 parts of triethanolamine alginate, 0.01-0.5 part of sodium bicarbonate, 1-2 parts of hexadecylpyridinium chloride, 0.5-1 part of coco-dimethylammonium diethyl sulfate and 50-90 parts of deionized water. According to the dye prepared by the invention and the waterless dyeing method, the dyeing effect is good; moreover, washing is not needed, thus any wastewater is not generated, environmental protection is facilitated, and the production cost is lowered.

The invention relates to the field of leather processing and provides a leather retanning and dyeing process through which the dyeing accuracy and color fullness can be obviously improved, the manual labor is effectively saved, the energy consumption and material cost are reduced, the environmental pollution is reduced and the dyeing wastewater treatment difficulty is reduced. The leather retanning and dyeing process sequentially comprises the process steps: bleaching, retanning, neutralizing, filling, stuffing and dyeing, wherein the pH in the dyeing process is controlled to be 3.5-4.5, and the dye amount is 1.5-2.5 percent.