2504 results about "Colour fastness" patented technology

The invention discloses a preparation method of polyol copolyester. The preparation method comprises the following steps of carrying out slurry preparation, esterifying I, esterifying II, pre-condensing I, pre-condensing II, final condensing and pelletizing on terephthalic acid and glycol. The preparation method also comprises: carrying out ester exchange reaction on 1,3-isophthalic acid-5-sodium sulfonate and another polyol; diluting with the glycol, and then performing the esterifying II. In the preparation method, 1,3-isophthalic acid-5-sodium sulfonate and another polyol react in advance, thereby increasing the reaction probability of another polyol and ensuring that another poyol can reach the required mole ratio in a finished product. The preparation method is mainly applied to production of dye modified polyester by using various dihydric alcohols at normal temperature and normal pressure. The modified polyester is dyed by mainly using anode pigment, the used dye chromatograph is more than that of common polyester, dye-uptake rate can reach above 99%, colour fastness reaches 4-5 grade of European standard, and the color is more flamboyance and beautiful. When filament yarns are subjected to spinning, full-package rate is up to 95%-100%.

A evaluating and testing device of fabric color difference and color fastness is composed of scanner, illuminating system, video camera equipment, image collecting unit and computer for processing and identifying evaluation ¿C test image of fabric color difference and color fastness. The method of evaluating and testing fabric color difference and color fastness is also disclosed.

The invention provides a disperse dye composition suitable for basic dyeing, mainly comprising the following raw materials in percentage by weight: 40-95 percent of one or a plurality of blue dyeing components A with a structural formula (I), 1-25 percent of one or a plurality of red dyeing components B with a structural formula (II) and 4-50 percent of one or a plurality of orange dyeing components C with a structural formula (III). The disperse dye composition has a wide dependency range of pH values, and can dye in a pH value ranging from 4.0 to 10; dyed and woven fabrics with predominant color-fastness performance, such as full hues, washing fastness, and the like, can be obtained.

The invention relates to a method used to increase inking printing dye ink color fastness. It includes the following steps: orderly adding dye color paste, polyhydric alcohol, adhesive, cross linking agent, surface activator in proportion into container; adding water to mix evenly; stirring, filtrating to form super fine dye ink; jet printing on the fabric; drying, baking to fix. The printing film formed by cross linking agent makes the super fine dye particle can tolerate dry wet friction, can increase its color fastness on the fabric without influencing on ink injecting performance.

The invention discloses high-color-fastness inkjet printing pigment ink, which is characterized by comprising superfine coating pigment color paste, a water-soluble cosolvent, a cross-linking agent, a surfactant, a defoaming agent, a bactericide agent, a pH regulator and water, wherein the superfine coating pigment color paste comprises a polymerizable dispersing agent, a pH regulator, a pigment, a monomer, a water-soluble initiator and water. The surface of pigment particles is coated with a polymer through fine emulsion polymerization, so that the dispersion stability of the pigment particles can be improved, and reaction groups capable of bonding with the crosslinking agent can be provided; when the prepared ink is inkjet-printed onto textiles and roasted for fixation, the cross-linking agent and the polymer on the pigment surface are formed into a continuous, compact and smooth printing film on the surfaces of the textiles, so that the rubbing fastness of the inkjet printing ink can be improved, and the hand feeling of the printed textiles can be improved to certain extent.

The invention discloses a preparation method of a high-imitation cotton printed fabric. The preparation method comprises the following steps: (1) weaving cloth; (2) sizing and oiling; (3) desizing and refining; (4) reducing alkaline amount; (5) shaping; (6) sanding; (7) printing; (8) post-shaping and drying; and (9) absorbing moisture, sweating and finishing. According to the preparation method, superfine denier fiber is used for weaving; warps and wefts adopt high-fischer yarns; compared with normal polyester cotton fabric, the high-imitation cotton printed fabric s better in moisture absorption and air permeability, and smoother in hand feeling; according the preparation method, raw material selection and structure design are used; and the processes of loosing and desizing, shaping, sanding, padding, absorbing moisture, sweating and finishing are used for preparing the high-imitation cotton printed fabric; the preparation method is simple and practical in process and strong in adaptability; the overall process has the characteristics of obviously saving energy and water; test of performances of colour fastness, strength and anti-static property proves that the high-imitation cotton printed fabric completely achieves the effect of the cotton.

The invention relates to a production process of peach skin lining without napping, which comprises the following procedures of gray fabric debatching, desizing, alkali deweighting, air cleaning, dyeing, dehydrating and flat setting, wherein the gray fabric is formed by interweaving warp-wise polyester-polyamide composite filaments and across warp polyester-polyamide composite filaments; the alkali deweighting is carried out on an overflow dyeing machine; a used deweighting agent comprises the following components of 14 to 16g/L of NaOH, 0.8 to 1.2g/L of penetrating agent, 1.8 to 2.2g/L of detergent and the balance of water, and the liquor ratio is 1 to 50. Dyeing is carried out by a double-bath process specifically comprising the steps of sequentially dyeing terylene and chinlon. The warp-wise fracture strength of the lining obtained by the invention can reach 980N, the across warp strength is 633N far higher than the standard of GB/T 17253-2008; the dry and wet rubbing fastness of the lining is 4-level, reaching the standard of GB/T 17253-2008. The invention overcomes the defects of uneven dyeing, easy appearance of dyeing defects, poor rubbing color firmness and the like of common peach skin fabrics, and additionally has the advantages of simpler process and lower production cost.

The invention discloses a method for dyeing and finishing a polyester-spandex fabric. Warp 75D polyester filament and 40D spandex filament twisted yarns and weft 300D polyester filament and 40D spandex filament twisted yarns are used as raw materials. The method comprises the following steps of: pretreating; presetting; dyeing; performing reduction clearing; finishing after thermal setting; and detecting, batching and packaging. The method overcomes the defects in the prior that the polyester-spandex fabric is poor in dyeing reproducibility during dyeing and finishing and poor in color fastness and the elasticity and the strength of the spandex are damaged at high temperature. The polyester-spandex fabric has the characteristics of high strength, good elasticity, stable size, strong feel of fur, full handfeel, mild gloss and good color fastness and is stiff and smooth.

The invention relates to a dyeing and printing technique to dye fabrics with natural plant dyestuff, including the following steps: (1) pretreatment, (2) soaping, (3) pre-mordant dyeing, (4), dyeing, (5) washing, (6) post-treatment, (7) washing, and (8) drying. The dyeing and printing technique adopts pollution-free natural plant dye and addition agent and requires no metal mordant during the dyeing process, and the dyeing and printing technique is ecological and produces no harmful gas or volatile substance, so the dyeing and printing technique is nontoxic and is environment-friendly. The product indexes accord with EU Oko-Tex Standard 100 and reach the standard of modern ecological textiles. The dyed fabric has excellent color fastness and good UV screening property. Production shows that the dyeing and printing technique totally satisfies the requirements of industrialized production of fabrics dyed and printed with plant dyestuff. The dyeing and printing technique suits technological development trend and the requirement of the change of consumer product market and has obvious environmental, social and economic benefits.

The invention discloses a method for producing differential terylene color yarns. The method comprises the following steps of: pre-crystallizing a functional polyester chip at the temperature of between 144 and 146 DEG C for 20 to 60 minutes, and drying at the temperature of between 149 and 151 DEG C for 4 to 6 hours, so that the moisture content of the dried functional polyester chip is less than or equal to 17 ppm; and drying masterbatches for 1 to 2 hours, mixing the dried masterbatches and the dried functional polyester chip fully, adding the mixture into a screw extrusion spinning machine, spinning by using a spinneret plate of the screw extrusion spinning machine, winding and dropping into a bucket, and processing to obtain the differential terylene color yarns. In the method, the masterbatches are added into the functional polyester chip to be spun into the color yarns, the masterbatches and the functional polyester chip are mixed uniformly in a mode of dynamic mixing or static mixing in a screw extruder, and the color yarns are produced through the spinneret plate. By the method, the color fastness and stability of the products are improved, the production cost is reduced, and environmental pollution is reduced.

The invention discloses a dyeing method of protein material. Arylamine compound is diazotized and then is directly coupled with tyrosine segment in protein molecule, so as to generate coloured substance containing azo bond; dosage of arylamine compound is equivalent to 0.1-5% of weight of protein material, and dyeing bath ratio is 1:20-100. Arylamine compound is taken as colour base and diazotized and then is directly coupled with tyrosine segment in protein molecule, and coloured substance connected with main chain by covalent bond in protein molecule, thus realizing dyeing on protein material and obtaining various colours by selecting arylamine colour bases in different structures. The dyeing method has the advantages of low energy consumption, less pollution and high colour fastness. The protein fiber fabric obtained by the method has higher wet-processing fastness; and the dyed protein powder also has higher fastness. The invention also provides a new dyeing method for protein material.

The invention relates to a method for processing polyester ultra-fine fiber coral blanket comprises a DTY material selection, a warping process, a weaving process, a pre-shaping process, a cutting process, a printing process, a loosening drying process, a color fixing process, a finishing process, a thermal shaping process, a back furring finishing process, a sewing process, and final product outlet. The pre-shaping process comprises that pre-shaping the blank cloth in weaving process at high temperature before the cutting process. And the invention has the advantages that the invention can assure the contract homogeneity of blank fiber and stabilize the longitudinal verticality, to obtain better smooth, water adsorption and thermal insulation functions, and the invention can save cost, reduce SS degree of printed pollutant, and can improve the color stability of fabric.

The invention relates to a preparation method of a moisture-absorbing, sweat-permeable and anti-crease fabric, which comprises the following steps: weaving combed long stapled cotton and terylen fibers with grooves of a special shape into a base fabric by warp and weft interwaving based on a certain ratio, and enduing the fabric with the soft and air-permeable natural texture and permanent moisture-absorbing, sweat-permeable and anti-crease functions based on the physical structures of the raw materials; and dyeing the base fabric at high pressure and high temperature, carrying out a post-treatment on the fabric with a finishing liquid mixed according to a ratio of a special formula, and chemically finishing to enable the fabric to have high color fastness and feel soft and comfortable while having the moisture-absorbing, sweat-permeable and anti-crease functions. Thus, the invention meets the requirements for the moisture-absorbing, sweat-permeable and anti-crease fabric in the market, especially the requirements for outdoor clothes such as police uniforms, sports wears and the like.

The present invention relates to a cation hybrid sol and a firm for increasing clarity and firmness of textile printing, which belongs to the textile chemical industry field. The present invention is characterized in that solvent, cation compound, precursors and deionized water are added into a reaction vessel in turn, after being agitated and evenly mixed, catalyst is added into the mixture, and agitated under room temperature and cation hybrid sol is obtained. After diluting the cation hybrid sol and deionized water as per specified ratio, a textile is padded and finished in the sol, and the finished textile is dried. The present invention can improve the anti-bleeding performance of the ink color printing of the textile; and clarity, depth and vividness of color of the ink color printing products are increased; paint/pigment on the textile can be fixed, meanwhile, the combined effect of the cation hybrid sol and paint/pigment make aggregation for fixation of the paint/pigment, and color firmness of the textile color printing is increased.

The invention belongs to the field of new materials, and particularly relates to a preparation method and application of a chitosan-natural plant pigment macromolecular dye solution. The preparation method comprises the following steps: firstly purifying a natural plant dye by utilizing the electrostatic attraction and the intermolecular force between the amido of chitosan and a negative ion natural plant pigment to obtain a chitosan-natural plant pigment macromolecular dye; and then preparing the chitosan-natural plant pigment macromolecular dye into a dye solution for textile coloration. Compared with the original natural plant dye, the obtained chitosan-natural plant pigment macromolecular dye has heavier molecular weight and has very high coloring capacity on natural fibers, such as cotton, hemp, silk and fur, because the chitosan has high affinity with cellulose fibers and protein fibers; a dyed fabric obtained by the chitosan-natural plant pigment macromolecular dye solution not only has deep color, but also has good color fastness.

The invention discloses a method for dyeing a superfine terylene fabric. The method comprises the following dyeing steps: adding a softening agent, part of a leveling agent, and an expansive agent into the soppy superfine terylene fabric to prepare a working solution; adding a pH regulator to regulate the pH value of the working solution to 3.5-4.0; heating the working solution with the adjusted pH value to 43 DEG C, and adding disperse dye and the residual leveling agent to prepare a dye liquor; carrying out heating and dyeing. The method aims at dyeing of a brightly colored superfine terylene fabric, and has the advantages the softening agent, the leveling agent and the expansive agent are added simultaneously, and the pH value of the dye liquor is regulated to 3.5-4.0, so that poor leveling property, uneven dyeing and other quality problems existing in a low-bath-ratio dyeing process can be solved; moreover, the dye-uptake rate of the disperse dye can be improved, secondary aggregation of the disperse dye in a high-temperature descending process is prevented, all color fastness indices of the superfine terylene fabric exceed 4-level, the dyeing property is improved, and the dyeing effect is ideal; the method further has the advantages of being environment-friendly and low in energy consumption.

The invention disclose a manufacturing method of stainable alginate fibers, which comprises the following steps of: adding a water-soluble dendrimers compound into a alginate fiber spinning solution, and solidifying, drafting, water washing and post-processing by adopting wet spinning equipment and technology to obtain the alginate fibers with excellent staining property, wherein the content of dendrimers in the alginate fibers is 1-10 percent. Compared with a traditional alginate fiber production technology, the invention has the advantages that the prepared alginate fibers can be applied to direct dyes and active dyes under a salt-free condition to realize staining and have higher dye uptake rate which generally reaches above 80 percent and is 10-15 times that of the alginate fibers produced by the traditional technology. In addition, the alginate fibers prepared by the invention has better color fastness and particularly excellent wet-processing fastness which reaches above grade 4.

The invention relates to a dyeing and finishing processing method in the printing and dyeing production field, in particular to a dyeing and finishing process of washing colorfastness for a plurality of times of a deep color pure cotton fabric. The process comprises the following steps: carrying out reactive dyeing on the pure cotton fabric by a cold pad-batch color-fixing method by stacking under normal temperature, selecting a reactive dye for cold pad-batch dyeing so as to improve the fixation rate and properties such as compatibility, levelling property, alkali resistance and the like, padding a washing colorfastness promoter, and optimizing the cold pad-batch dyeing process to meet the requirement that the fabric has the washing colorfastness for a plurality of times.

The invention discloses a sun-shading composite material with extinction and high flame-retardant effects. The composite material is a fabric comprising warps and wefts, wherein the fabric is woven by covering threads, rectangular or square gaps are left among the wefts, and the porosity of the composite material is 2-5%; the covering threads are made of a polyvinyl chloride composite material coating the surfaces of polyester fibers, the polyvinyl chloride composite material has the extinction and high flame-retardant effects and the covering threads are 0.3-0.5mm in diameter. The invention also provides a preparation method of the composite material. The sun-shading composite material has the characteristics of sunshading, ultraviolet ray resistance, inflaming retarding, high color fastness and the like of similar sun-shading composite materials, and also has the advantages of low glossiness, glare control, softness, comfort for eyes, fine and smooth handfeel and good breathability, and therefore, the sun-shading composite material can be well applied to the fields of leisure, fashion and individuation.

The invention discloses a deepening agent and a preparation method thereof, as well as a method for improving the color fastness of dyeing textiles. The deepening agent consists of amino organic silicon, ternary copolymerized organosilicon, alkyl ketene, an emulsifier and water. Deepened textiles finished by the deepening agent have good deep color property and high color fastness. In addition, the preparation method of the deepening agent and a finishing processing method of the textiles are low in production cost, simple to operate and applicable in the field of finishing of dyeing textiles.

The invention relates to high-strength terylene microfiber needling fabric and belongs to the technical field of needling non-woven cloth. The high-strength terylene microfiber needling fabric is prepared by the following steps: performing non-woven double carding and double lapping on island type island short fiber to obtain double-layer cotton web; clamping base cloth which is obtained by using polyester filament yarn through a hydraulic loom in the middle of the double-layer cotton web; performing non-woven needling to obtain composite base cloth; starching; performing polyurethane (PU) resin impregnation; performing alkali reducing splitting; dyeing; drying; and performing double-sided sanding, wherein the polyester filament yarn is 68 to 75 D, the fineness of the island type island short fiber is 1 to 3 D, the island type island short fiber contains 37 islands and has the length of 38 to 51 mm, and the sea/island ratio is 30/70. The high-strength terylene microfiber needling fabric is low in dye cost and water consumption, uniform in dyeing, bright in color and luster, and high in color fastness and air permeability, enhances the stretching resistance, and takes both leather feeling and fluff feeling into consideration.

The invention provides a composition of blue to black disperse dyes. The dyes mainly comprise the ingredients in parts by mass of 20-85 parts of at least one component A of which the structure is shown in the formula (I), 5-50 parts of at least one component B of which the structure is shown in the formula (II), and 1-55 parts of at least one component C of which the structure is shown in the formula (III). The composition of the disperse dyes disclosed by the invention can supply and dye in a micro-pelletized liquid state, a paste state or a powder state which is dried by a spray drying process and the like, and a granular state after being commercialized. When the composition of the disperse dyes disclosed by the invention dyes the hydrophobic fiber materials, each dye performance and the color fastness are excellent; and the blue to black fabrics (I), (II) and (III) can be obtained by adjusting the ratio of different components.

The invention discloses a preparation method of pigment ink for inkjet printing of a non-adhesive textile, and belongs to the technical field of fine chemical engineering and material science. Different from the conventional ink for inkjet printing, the ink is obtained by adopting ultrafine coated pigment color paste obtained by a miniemulsion polymerization method as a coloring agent, adding substances such as a water-soluble cosolvent, a surface active agent and deionized water, stirring, mixing and filtering. The ink does not contain the adhesive, has the advantages of small particle diameter, high storage stability and good jetting smoothness and the like; and the inkjet printed textile prepared by the ink has the advantages of good color fastness and color brightness and good hand feel.

The invention relates to a colored ultra-fine polyester/nylon composite fiber and a processing method thereof. The colored ultra-fine nylon/polyester composite fiber is formed by the following materials according to weight part: 62 portions to 82 portions of polyester chips, 15 portions to 35 portions of nylon chips, 1 portion to 3.5 portions of polyester colored master batches and 0.5 portion to 2 portions of nylon colored master batches. The invention has the advantages that: as the polyester colored master batches and the nylon colored master batches are added into the raw material of the polyester chips and the nylon chips, coloring requirement before spinning is met, thus causing spun products not to require dyeing; textile products produced by using the colored ultra-fine polyester/nylon composite fiber has the color fastness much better than that of textile products by dyeing; in addition, the processing method makes up the defect that the textile products of the ultra-fine polyester/nylon composite fiber can not be dyed into dark colors, widens the application scope of the ultra-fine polyester/nylon composite fiber in the field of the textile products; does not need dyeing processing, thus avoiding environmental pollution caused by the textile products due to dyeing; has reasonable processing conditions, and can carry out production with the assistance of the traditional double-component equipment; the colored ultra-fine polyester/nylon composite fiber has all the properties and styles of the ultra-fine polyester/nylon composite fibers with true colors.