54 results about "Acid dye" patented technology

The invention discloses a method for dyeing a brocade cotton fabric through vat dye long-vehicle continuous pad dyeing, and belongs to the technical field of printing and dyeing processing and dyeing and finishing engineering. The dyeing method comprises the following steps: padding a brocade cotton fabric semi-finished product in a vat dye liquor, drying, cooling, padding in a vat color developing working solution, and finally steaming, the steamed fabric is subjected to cold water washing, oxidation, soaping, hot water washing, continuous cold water washing and drying finally, and dyeing is completed. According to the invention, a long-vehicle continuous pad dyeing technology is adopted, and synchronous dyeing of the vat dye on two heterogeneous fibers nylon and cotton is realized by padding a reduction developing working solution (the main components of which comprise caustic soda, sodium carbonate, sodium hydrosulfite and industrial salt) and performing steaming developing. The production process is short, the fabric cloth cover leveling property is good, the light fastness is high, and the problem that acid dye dyed chinlon fabric is not resistant to high-temperature washing is solved.

The invention relates to the field of dye chemistry, and discloses an acid dye with high color fastness, a preparation method of the acid dye and application of the acid dye in textile dyeing. According to the dye molecule, a 4-sulfo benzene ring and a 2, 5-dichlorobenzene ring are connected through an azo bridge (-N = N-), and a polysulfonate substituent group (-SO3Na) is introduced to a molecular skeleton to form a symmetric azo conjugated structure. The preparation method comprises the steps of nitration, reduction, sulfonation, diazotization, coupling and the like, the process conditions are mild, and the yield is stable. The obtained dye has a strong absorption peak in the range of 540-560nm, and the molar absorption coefficient epsilon is greater than or equal to 1.0 * 10 < 5 > L.mol <-1 >. Cm <-1 >. Compared with the conventional acid red dye, the dye has the advantages that the light fastness can reach grade 8, the fastness to washing is grade 7 or above, the color is bright, the color layer is uniform, the high dye-uptake can be realized under the low-salt condition, the conductivity of waste liquid is remarkably reduced, and the dye is suitable for dyeing protein fibers such as wool, nylon and silk.

This invention provides an antistatic dyeable spandex fiber and its preparation method. During spandex production, N-(2-hydroxyethyl)ethylenediamine is used as a terminating agent for chain extension, combined with the use of the stabilizer TAD, to prepare antistatic dyeable spandex fiber. This improves the dyeing rate and color fastness of spandex fiber to acid dyes and reactive dyes. Furthermore, the heat-resistant dyeable spandex can meet the high-temperature dyeing requirements in the polyester / spandex field. Simultaneously, the improved antistatic properties of the spandex fiber reduce the amount of oiling agents used by spandex manufacturers, thereby lowering production costs. For subsequent processes, it reduces the defect rate in dyeing, finishing, and weaving, saving costs.

This invention discloses a 1,6-diamino-dibenzo[a,o]perylene-7,16-dione-2,5-disulfonic acid derivative, its preparation method, and its application. Using a vat dye derivative PR177 as the parent material, a 4,4'-diamino-1,1'-dianthraquinone-3,3'-disulfonic acid derivative is formed by the Ullmann condensation of a 1-amino-4-bromoanthraquinone-2-sulfonic acid derivative. This derivative is then cyclically closed via the McMurray reaction to form the 1,6-diamino-dibenzo[a,o]perylene-7,16-dione-2,5-disulfonic acid derivative. This allows for direct dyeing without the use of sodium hydrosulfite. Compared to soluble vat dyes, it is stable when exposed to air. Furthermore, due to its good planarity, it exhibits excellent dyeing performance as an acid dye. It combines the advantages of good directness of vat dyes and good water solubility of acid dyes, especially showing excellent color fastness and exhaustion rate in wool dyeing.

The invention discloses a synthetic method of a water-based polyurethane color fixing agent for nylon dyed by an acid dye, aiming at the property of nylon dyed by the acid dye, poly (butylene adipate-1000) and polyethylene glycol-1000 are mixed to prepare cationic water-based polyurethane, so that the dyeing percentage is increased, and the treated nylon has higher K / S value and color fastness; meanwhile, N, N-dimethyl-N, N-bis (2-ethoxyl) ammonium chloride is selected as a cationic chain extender of the waterborne polyurethane, compared with a traditional cationic chain extender, a neutralization procedure necessary for a traditional route is omitted, the risks of neutralization amount deviation, local acid excess and the like are avoided, and the production process is simplified.

The invention provides PEI (polyethyleneimine) functional modification based on magnetic nano silicon oxide and a preparation method and application thereof, and belongs to the field of organic-inorganic composite adsorption materials. The invention provides PEI modification based on magnetic nano silicon oxide. The PEI modification comprises the following raw material components in percentage by mass: magnetic ferroferric oxide, ethyl orthosilicate, APTES (3-aminopropyltriethoxysilane), glutaraldehyde (50%) and PEI. The preparation method comprises the following steps: firstly coating the surface of magnetic ferroferric oxide with nano silicon oxide, then introducing amino of APTES, and finally grafting PEI on the surface of the material by taking glutaraldehyde as a cross-linking agent. The PEI modified magnetic nano silicon oxide material provided by the invention can remarkably improve the adsorption effect on acid dye acid lake blue A, and is convenient to recycle due to magnetism.

The invention provides a wood dyeing method, and belongs to the technical field of wood dyeing. The method comprises the following steps: bleaching wood, pretreating the bleached wood by using an inorganic alkaline solution, placing the pretreated wood in a cation modification solution for cation modification, and placing the cation modified wood in an acid dye dyeing solution for dyeing to obtain the cation modified dyed wood. The inorganic alkaline solution is used for pretreating the bleached wood, under the alkaline condition, hydroxyl groups on the surface of wood fibers are more easily activated, the reaction activity of the wood fibers is improved, cationic groups in the cationic modifier and hydroxyl groups in wood cellulose are more easily subjected to chemical reaction, and therefore more stable covalent bond combination is formed; more cationic modifiers are grafted to wood fibers through a chemical grafting method, more groups with positive charges are introduced to the surface of wood, then the dye uptake is increased, and the cationic modifier is suitable for dyeing processing of wood materials such as recombined decorative veneers and veneer veneers.

The invention relates to a waterborne polyurethane emulsion as well as a preparation method and application thereof. The waterborne polyurethane emulsion is prepared from the following raw materials in parts by weight: 50 to 200 parts of polyether polyol, 100 to 250 parts of polycarbonate polyol, 40 to 100 parts of isocyanate, 1 to 10 parts of nonionic polyol containing a polyoxyethylene group structure, 5 to 20 parts of a chain extender and 400 to 700 parts of an emulsifier. The chain extender comprises a combination of a hydrophilic sulfonic acid chain extender and an aliphatic polyamine derivative chain extender. The preparation raw materials of the water-based polyurethane emulsion are reasonably designed, so that the water-based polyurethane emulsion which can improve the wear-resistant color fastness of acid-dyed base cloth, reduce the fading problem of the acid-dyed base cloth after the acid-dyed base cloth is impregnated and improve the texture of the acid-dyed base cloth, such as velvet feeling, meat feeling and elastic feeling, and has certain water resistance is prepared.

The invention discloses a light-color sunscreen fabric, a preparation method thereof and a sunscreen garment, and belongs to the technical field of textile fabrics. The preparation method comprises the steps that firstly, coated yarn is provided, spandex serves as core yarn of the coated yarn, and extinction chinlon with the special-shaped section serves as outer wrapping fiber of the coated yarn; step 2, knitting the coated yarn according to a double tricot stitch to obtain a gray fabric; the length of each coil of the double tricot stitch is 0.25 to 0.28 cm, and the length of an arc is 0.06 to 0.09 cm; and step 3, carrying out light-color dyeing on the gray fabric by using an acid dye under an acid condition, and then treating the gray fabric by using a phenol anti-yellowing auxiliary agent to obtain the light-color sunscreen fabric including white. According to the light-color sunscreen fabric, the acid dye is selected for dyeing under the acid condition, the phenolic anti-yellowing auxiliary agent is added in the post-finishing process of the fabric, and the yellowing risk is effectively reduced (the color fastness to light yellowing is 4-5 levels).

To provide a hair-dyeing composition having stable hair-dyeing power even to the difference of hair quality for the purpose of remarkably suppressing stains on the skin, a bathtub and a washstand which cannot be realized by a conventional hair-dyeing composition.SOLUTION: The ink composition contains at least one dye selected from an HC dye, a basic dye, a direct dye, and an acidic dye and contains a hydrophobically modified polyether urethane.SELECTED DRAWING: Figure 1

The invention relates to the technical field of spinning, and discloses a method for carrying out chinlon inkjet printing by adopting acidic / disperse dye compound digital printing ink, which comprises the following steps: (1) carrying out sizing pretreatment on chinlon fabric by adopting pretreatment slurry, and then drying; (2) compounding an acid dye and a disperse dye, adding a humectant, an adhesive, a surface tension regulator and water, regulating ink jet parameters, and filtering through a filter membrane to obtain compound digital printing ink; and (3) carrying out ink-jet printing on the chinlon fabric by using the compound digital printing ink, and then drying to obtain the ink-jet printed chinlon fabric. The method comprises the following steps: firstly, carrying out sizing pretreatment on the chinlon fabric by using the compound slurry, and then carrying out inkjet printing on the chinlon fabric by using the compound digital printing ink, thereby finally obtaining the chinlon printed fabric with high color depth value, high saturation and clear pattern.

This invention discloses a multifunctional anti-wrinkle agent for nylon dyeing, its synthesis method, and its application, belonging to the field of textile auxiliaries technology. The anti-wrinkle agent is a polyester polyether compound containing polymeric cashew bisphenol. Specifically, it is based on ortho-cashew bisphenol polyoxyethylene ether, which is sequentially polymerized with a polyester linker and a polyether linker. After neutralization and sulfonation, the target product is obtained. By controlling the reactant ratio and reaction process parameters, the product is made into an anionic polymer compound. In the acid dyeing process of nylon, it can be efficiently adsorbed onto the surface of nylon fibers, effectively preventing problems such as scratches, bark wrinkles, and abrasions during the dyeing process of nylon fabrics. It also significantly improves the hydrophilicity and hand feel of nylon fabrics, exhibits high stability under 98℃ dye bath conditions, and has good compatibility with weakly acidic and neutral dyes, without forming lakes, oil spots, or color stains, thus improving the overall quality of nylon fabric dyeing and finishing.

The invention discloses a light fastness improver for an acid dye as well as a preparation method and application of the light fastness improver. The light fastness improver is prepared from the following components in parts by mass: 30 to 72 parts of benzotriazole or triazine ultraviolet absorbent; 5-25 parts of a dispersant; 1-6 parts of a solvent; and the balance of water. The preparation method comprises the following steps: firstly, uniformly mixing the dispersing agent, the solvent and the water, adding the mixture into the ultraviolet absorbent, putting the mixture into a mixing kettle or a grinding machine, and stirring and mixing for 0.5-2 hours or grinding for 4-8 hours at room temperature to prepare the light fastness improving agent. The light fastness improver disclosed by the invention is attached and permeated on a fabric for dyeing an acid dye through a dyeing one-bath method or a padding method, so that the light fastness of the fabric is obviously improved. And after treatment, the influence on after-finishing processing is small.

The invention relates to a uniform dyeing and high-color-fixation piece dyeing process suitable for various fabrics. The fabric is prepared by the following method: pretreatment: pretreating a whole costume blank of various fabrics to obtain a pretreated blank; dyeing: immersing the pretreated blank in a dyeing solution, and dyeing to obtain dyed gray cloth; post-treatment: sequentially carrying out color fixation, soaping and hot drying on the dyed gray cloth to obtain dyed clothes; the effective components of the dye liquor comprise a reactive dye, a weak acid dye, sulfate, a level dyeing color fixing agent and an acid material; the leveling color fixing agent is composed of a leveling activator, tetramethyl ammonium polyhedral oligomeric silsesquioxane and sulfonated modified cellulose nanocrystals, and the leveling activator is composed of multiple of N, N '-(1, 2-ethanediyl) diaspartic acid, sucrose octasulfate sodium, fatty alcohol-polyoxyethylene ether and polyethylene glycol monooleic acid phosphate. By means of the process, better evenly-dyed and high-color-fixation piece-dyed clothes can be efficiently obtained.

One or more embodiments of the present invention relate to a resin composition which contains at least a polymer (A) and a polymer (B), wherein: the polymer (A) contains one or more monomers that are selected from the group consisting of acrylonitrile, vinyl halides and vinylidene halides; the polymer (B) dissolves in benzyl alcohol; and from 70 parts by mass to 92.5 parts by mass of the polymer (A) and from 7.5 parts by mass to 30 parts by mass of the polymer (B) are contained if the total amount of the polymer (A) and the polymer (B) is taken as 100 parts by mass. The present invention provides a synthetic fiber which is easily dyeable with an acidic dye without requiring use of a special facility or heating to high temperatures.

The present invention aims to provide a hair dye composition and hair dyeing method that achieve both uniform coloring and deep coloring without requiring advanced beauty techniques. [Solution] A hair dye composition comprising (A) at least one dye selected from the group consisting of basic dyes, HC dyes, acid dyes, and nitro dyes, (B) 0.1 to 10% by mass of a foaming agent (excluding components that fall under (C) below), and (C) at least one component selected from the group consisting of (C1) nonionic surfactants, (C2) polyhydric alcohols, and (C3) fatty acids, wherein the mass ratio (A) / (C) of (A) to (C) is 0.7 or less.

The invention relates to a low-temperature sintered CeO2 / SiC catalytic membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: uniformly mixing SiC, a nanoscale CeO2 sintering aid, a dispersing agent and water according to a mass ratio of 10: (1-8): (0.5-1): (81-90), carrying out ball milling to obtain mixed slurry, and adjusting the pH value to 9-12 for later use; coating a SiC support body with the mixed slurry liquid, and drying to obtain a double-side coated SiC blank body; and sintering the double-sided coated SiC green body at the temperature of 500-800 DEG C to finally obtain the low-temperature sintered CeO2 / SiC catalytic membrane. Wherein the particle size of the nanoscale CeO2 sintering aid ranges from 5 nm to 200 nm. Compared with the prior art, the method has the advantages that the firm CeO2 / SiC ceramic membrane can be successfully obtained under a relatively low-temperature condition, and the prepared low-temperature sintered catalytic membrane has excellent catalytic performance and can be successfully applied to treatment of high-temperature acid dye wastewater.

The invention discloses a nylon printing dissolving oil and a preparation method thereof, and belongs to the technical field of nylon printing, the nylon printing dissolving oil is prepared by polymerizing maleic acid benzyl alcohol ester, maleic acid cardanol polyoxyethylene ether ester and acryloylethylenediamine in a cyclohexanone solvent according to a specific ratio, emulsifying, esterifying and adjusting the pH value. By adopting the nylon printing dissolving oil and the preparation method thereof, the condition of non-uniform spreading of color paste caused by non-uniform net penetrating shear force of cationic charges on the surfaces of nylon fibers can be effectively shielded, and meanwhile, the dissolving and dispersing effects of anionic acid dye in a color paste system can be enhanced; by starting from the two reasons, the quality problems of uneven colored light, hard spots and the like of the nylon printed fabric are thoroughly solved, so that the processing level of the nylon printed fabric is improved.

The present invention provides an easily dyeable spandex and its preparation method. During the spandex preparation process, a polyether ester polyol with a specific structure is added to a glycol-based raw material, resulting in spandex fibers with a specific aromatic group-polyether block structure in their molecular soft segments. Compared to conventional spandex, the easily dyeable spandex of the present invention increases the dyeing rate and fixation ability of spandex for disperse and acid dyes without compromising its mechanical properties. By adjusting the mass ratio of the aforementioned aromatic group-polyether block structure in the spandex molecular soft segments, the spandex achieves sufficient dyeing rate and fixation while exhibiting superior alkali resistance.

The application discloses a wool tricarboxylic acid blended fabric and a preparation method thereof, and belongs to the technical field of textile printing and dyeing. The method comprises the following steps: respectively performing normal-pressure low-temperature plasma pretreatment and specific enzyme synergistic modification on wool sliver and tricarboxylic acid short fiber sliver, moderately passivating wool scales by using protease, and promoting surface micro-deacetylation of tricarboxylic acid by using esterase or cutinase; mixing the slivers, spinning and weaving into a fabric; performing one-bath same-color dyeing by using disperse / acid dyes at 100 DEG C under normal pressure; and performing medium-low temperature heat setting. Through synergistic effect of plasma physical etching and biological enzyme chemical degradation, the technical prejudice that tricarboxylic acid needs high-temperature dyeing at 130 DEG C is broken. The method can obtain excellent same color under normal pressure, significantly improves wool strength retention rate, avoids wool heat damage and yellowing, the finished product has low shrinkage rate after machine washing, is green and environment-friendly, and is suitable for industrial popularization.

The invention belongs to the technical field of textile printing and dyeing, and particularly relates to a camouflage printing process with high lasting color saturation and fastness and a camouflage fabric, and the printing process is used for sequentially treating the fabric by the following steps: fabric pretreatment, printing and functional after-treatment; the step of printing comprises the following procedures: printing, drying, ageing, baking, reducing and fixing, washing, oxidizing and soaping, fixing and washing; wherein a circular screen printer is adopted for printing, and printing paste comprises acid dye, vat dye, printing paint, an adhesive, a thickening agent and water; in the ageing process, padding in a reducing solution; the functional after-finishing comprises the following procedures: tentering, washing and checking; wherein the tentering process sequentially comprises the steps of padding a finishing liquid and baking and curing. The process is simple and environment-friendly, and the obtained fabric is high in color fastness to washing. The invention also provides the camouflage fabric prepared by the process.

To provide a dyeing agent composition for a regenerated collagen fiber using a dye and excellent in fastness after dyeing the regenerated collagen fiber.SOLUTION: A staining agent composition for regenerated collagen fibers, wherein the staining agent composition contains a predetermined acid dye (A) and water, and the regenerated collagen fibers contain modified regenerated collagen fibers containing a specific component (B).SELECTED DRAWING: None

The invention discloses an acid printed and dyed silk fabric resistant to machine washing and high in washing liquor staining fastness and a preparation process thereof, the acid printed and dyed silk fabric is soaked or padded with a color fixing agent and then treated by a cross-linking agent, and a polymer space net-shaped protective layer is formed on the surface of the fabric; the color fixing agent is a polyethylene polyamine compound or cationic quaternary ammonium salt; the cross-linking agent is an aziridine cross-linking agent or triglycidyl isocyanurate. According to the invention, a fixation composite cross-linking treatment technology is proposed for the first time, a macromolecular space net-shaped protective layer is formed under a low-temperature condition, and the washing liquor staining fastness (rating is more than 3 grade) and the machine washing resistance (the fabric after 10 times of machine washing is small in color change, free of obvious ash damage and color fading, and very good in color fastness to washing) of the acid dyed or printed silk fabric are remarkably improved. The fixation treatment process is simple and reliable, the staining fastness of washing liquor of the acidic silk fabric can be effectively improved at the low temperature of 30-40 DEG C, and the influence on the hand feeling and color of the fabric is very small.

The present application belongs to the field of chemical industry, and particularly relates to a novel yellow acid dye (trisazo yellow acid dye) and a preparation method thereof. The trisazo yellow acid dye has a general structure as shown in the present application. The trisazo yellow acid dye does not contain carcinogenic dyes and heavy metal dyes, and belongs to a safe and environmentally-friendly dye. The trisazo yellow acid dye has good water solubility, and can be smoothly and uniformly dyed in a dyeing system, can be efficiently combined with protein and polyamide fibers, has a high dyeing rate, and the dyed fibers have excellent color fastness, and is a desirable substitute for metal complex dyes.

The application discloses a manufacturing method of a yin-yang double-color four-way elastic skin windbreaker fabric, and relates to the technical field of windbreaker fabrics.The method comprises the following steps: step 1, yarn preparation: obtaining warp yarn by covering spandex yarn with regenerated nylon and obtaining weft yarn by covering spandex yarn with regenerated polyester; step 2, weaving; step 3, fabric desizing: passing the double-line check fabric through a desizing machine; step 4, pre-setting and shaping; step 5, dyeing: dyeing the warp yarn with acid dyes and dyeing the weft yarn with disperse dyes to obtain a yin-yang double-color fabric; and step 6, waterproof finishing.The application has the advantages that regenerated nylon and regenerated polyester are prepared through a process, and the warp and weft yarns of the woven fabric are formed by covering spandex yarn with regenerated nylon and regenerated polyester respectively, so that the purpose of green environmental protection and sustainable development is achieved, and the warp and weft four-way elasticity of the fabric has the effects of effectively resisting wrinkles and reducing the difficulty of fabric care.

A dyeing agent composition for regenerated collagen fibers, wherein the dyeing agent composition comprises a predetermined acidic dye (A) and water, and the regenerated collagen fibers comprise modified regenerated collagen fibers containing a specific component (B).

The invention relates to the field of functional composite materials, and discloses a preparation process of an ecological leather fiber velvet composite material and a product. The preparation process of the ecological leather fiber velvet composite material comprises the following steps: S1, needling sea-island fibers to prepare a non-woven fabric; s2, carrying out gum dipping treatment by using a polyurethane gum dipping solution, and drying; s3, decrement splitting, water washing and drying; s4, softening treatment and sanding; s5, soaking with a pretreatment solution, dyeing with a dyeing agent, and drying; the pretreatment liquid in the step S5 contains a dyeing auxiliary agent composed of polydimethyldiallylammonium chloride, a methyl vinyl ether-maleic anhydride copolymer and bis [3-(triethoxysilyl) propyl] amine, and the dyeing agent is an acid dye containing sulfonate. According to the preparation method, through the preparation process of firstly sanding and then dyeing, and optimizing the types of the pretreatment liquid and the dyeing agent, the prepared ecological leather fiber velvet composite material has relatively good dyeing uniformity, color fastness and soft comfort, and the problem of white exposure after abrasion does not occur.

The invention relates to the field of textile dyes, and discloses a high-fastness acid dye composition and a preparation method and application thereof.The composition comprises an A-series extremely light three-primary-color series, a B-series light medium three-primary-color series, an M-type deep three-primary-color series and a brilliant-color series, and each series is composed of an acid dye body, a leveling agent, a color fixing agent and a pH buffering agent; and the total mass of the auxiliary agent accounts for 5-15%. The preparation method comprises the steps of dye intermediate preparation through diazotization-coupling reaction, metal complexation reaction, mixing and dissolving, sanding and refining and filtering and blending, the particle size D of the obtained dye is smaller than or equal to 1.5 microns, and the pH value of the solution is 4.0-6.5. The composition is suitable for dyeing fabrics such as chinlon, chinlon spandex, chinlon polyester and the like, the dyeing temperature is 60-105 DEG C, the washing fastness, the white splicing fastness and the storage fastness all reach 4-5 levels, and the exhaustion rate is greater than or equal to 98%. Through collaborative design of multiple series of structures and control of a buffer system, the effects of uniform dyeing and high fastness under different color depths are achieved, the dye liquor is stable, and the environment-friendly performance is excellent.

An alternative to BPS-based mordants for use in textile dyeing. The mordant comprises a water-based, bio-inspired co-polymer with cationic moieties that become fixed onto the textile by UV curing. Polymers that can be modified to change solubility, ratios of UV-crosslinkable monomer and charged monomer, the type of charge (either positive or negative) by way of co-monomer selection, as well as blend with other bio-based polymers for color fastness improvement are utilized. A specific example of such a mordant alternative is Vinylbenzylthymine (VBT) which may be used alone or with chitosan in the textile dyeing process.

1. Name of the product in this design: Integrated printing equipment (acid dye waterless washing). 2. Application of this design: for integrated production of digital printing fabrics, including printing, color development, and setting. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. The bottom surface of this product is a part that is not easily seen or cannot be seen during use, so the bottom view is omitted.