230results about How to "Improve color fixation" patented technology

The invention relates to a cationic high-molecular low-temperature self-crosslinking formaldehyde-free color fixing agent and a preparation method. The color fixing agent is prepared from the following raw materials: dimethyl diallyl ammonium chloride containing 350 to 420kg of cationic monomer, water-soluble monomer comprising 0 to 20kg of acrylamide and 0 to 20kg of allyl amine, 10 to 20kg of low-temperature self-crosslinking reactive monomer, 10 to 20kg of low-temperature self-crosslinking accelerant, 1.0 to 2.0kg of evocating agent (ammonium persulfate) and 380 to 450kg of deionized water. The cationic high-molecular low-temperature self-crosslinking formaldehyde-free color fixing agent has the advantages that the color fixing agent can achieve ideal color-fixing effect and increase dye utilization rate, dyeing fastness and product quality. The preparation method has simple production process flow and low cost, and adopts a closed production process and special production equipment, thereby converting all input raw materials into products; and 'three wastes' (waste gas, waste water and waste residue) do not generated during the entire production course and the method is suitable for industrialized production.

The invention discloses a natural dyestuff dyeing and finishing process of polyester fabric. The natural dyestuff dyeing and finishing process of the polyester fabric comprises pretreatment, preshaping, modification treatment, dyeing, mordant removing, soaping, fixation, finishing, drying, shaping, calendering and winding. According to the natural dyestuff dyeing and finishing process of the polyester fabric, helicase and alhpa-amylase are adopted to conduct pretreatment, modification treatment is radically conducted on the performance of the polyester fabric through a acetic acid aqueous solution of chitosan, hydrogen peroxide and epoxy chloropropane, and the dyeing rate of the fabric is increased; in the dyeing process, a large amount of alkaline matter and inorganic salt are not used, a levelling agent and diffusant are added, the level-dyeing property is improved, natural dyestuff is used, therefore, environmental pollution is avoided, and requirements of green environmental protection are met; modification treatment and fire-retardant treatment are conducted on the fabric through montmorillonite, and the fire resistance of the fabric is high; anti-yellowing reagents are used in the preshaping and the shaping, and the final fabric is not prone to yellowing.

The invention discloses an environment-friendly dyeing and finishing technology of a cotton cellulose fabric. The technology comprises the following steps: pretreatment; preshaping; modification treatment; dyeing; mordant removing; soaping; color fixing; post-treatment; drying; shaping; calendaring; rolling. According to the technology, pretreatment is carried out through the adoption of helicase and alpha-amylase, and acetic acid aqueous solution of chitosan, hydrogen peroxide and epoxy chloropropane is adopted, so that the property of the cotton cellulose fabric is fundamentally modified, and the dye-uptake of the fabric is increased; during the dyeing procedure, large quantities of alkaline substances and inorganic salt are not used, and a levelling agent and a dispersing agent are added, so that the dye uniformity is improved; natural dye is used, so that environmental pollution is avoided, and the demand of environmental protection is met; modification treatment and fire retardant treatment are carried out on the fabric through the adoption of montmorillonite, so that the fire resistance of the fabric is high; self-cleaning treatment is added in post-treatment, so that the self-cleaning capacity, wrinkle resistance and water washable firmness of the fabric are improved; the whole technology is environment-friendly and free of pollution.

The invention discloses a flax fabric dyeing and finishing process including pretreatment, pre-sizing, modification treatment, dyeing, soaping, color fixation, post-finishing, drying, sizing, calendering, and coiling. Ultrasonic waves are used for pretreatment, and at the same time, the modification treatment step is added; in the dyeing process, a large amount of alkaline substances and inorganic salts are not used, natural dyes are used, and at the same time, a colophony powder is added as a color fixing agent, so that the color fixing effect is enhanced, besides, the environmental pollution is avoided, and the requirements of environmental protection are met; montmorillonite is used for modification treatment and flame retardant treatment on the fabric, so that the flame retardancy of the fabric is high; and an anti-yellowing reagent is used in the processes of pre-sizing, sizing and post-finishing, so that a final fabric does not easily turn yellow.

The invention discloses an aramid fabric high-efficiency dyeing and finishing process including modification treatment, scouring and dyeing in one bath, soaping, color fixation, post-finishing, drying, sizing, calendering, and coiling. According to the dyeing and finishing process, before the dyeing process, a fabric is subjected to low temperature plasma treatment, then the fiber fabric is subjected to modification treatment with 2,3-epoxypropyltrimethylammonium chloride and chitosan, and thus the fabric dyeing degree is increased, and the difficulty of the subsequent dyeing steps is reduced; at the same time, ultrasonic treatment is adopted during modification treatment, so that the time is saved and the treatment efficiency is improved; with adopting of scouring and dyeing in one bath, the efficiency is increased, and the cost is reduced; in the dyeing process, a large amount of alkaline substances and inorganic salts are not used, natural dyes are used, and at the same time, a colophony powder is added as a color fixing agent, so that the color fixing effect is enhanced, besides, the environmental pollution is avoided, and the requirements of environmental protection are met; and with increase of anti-yellowing finishing, a final fabric does not easily turn yellow.

The invention discloses a method for willow artwork dyeing through a natural indigo pigment. The method comprises the following aspects that (1) indigo extraction is conducted, specifically, a plant raw material is subjected to crushing, fermentation, water soluble extraction and low-temperature drying, and the indigo pigment is prepared; (2) acid-alkali steeping is conducted, specifically, a hydrochlric solution with the concentration being 0.3-0.4% and a sodium hydroxide solution with the concentration being 0.25-0.3% are used to steep a willow artwork correspondingly; (3) cooking for impurity removal is conducted, specifically, impurities in the willow artwork is removed through cooking; (4) steaming for dyeing is conducted, specifically, the indigo pigment with the mass being 11-13% that of distillation boiler water is added, and steam dyeing is conducted; (5) low-temperature drying is conducted, specifically, the dyed willow artwork is dried; (6) infrared color fixing is conducted, specifically, the willow artwork is wrapped through mixed slurry and placed under infrared lamplight with the illumination intensity being 470-520 lux for color fixing; (7) ultraviolet inspection is conducted, specifically, the willow artwork subjected to color fixing is placed under an ultraviolet lamp, and the color fixing condition is inspected; and (8) tung oil layer coating is conducted, specifically, the willow artwork qualified after inspection is coated with tung oil, and after drying, the willow artwork with the natural indigo pigment is prepared.

The invention discloses a low-temperature dyeing and finishing technology for bamboo fiber fabric. The low-temperature dyeing and finishing technology includes the steps of pretreatment, preshaping, modification treatment, dyeing, mordant removal, soaping, color fixation, after finishing, drying, shaping, calendering and rolling. Helicase, scouring enzyme and alpha-amylase are adopted for pretreatment, modification treatment is adopted before dyeing, the performance of the bamboo fiber fabric is modified fundamentally, and the dye-uptake rate of the fabric is increased; as in the dyeing working procedure, alkaline substance and inorganic salts are not used in quantity, and a levelling agent is added, the dyeing levelness is improved; environment pollution is avoided by using natural dyestuff, which meets the requirement for environmental protection; as self-cleaning treatment is added in after treatment, the self-cleaning capacity, crease-resistant performance and wash-resisting firmness of the fabric are improved; crease-resistant finishing is added, and therefore the crease-resistant performance of the fabric is improved; the whole technology is environmentally friendly and free from pollution.

The invention relates to a preparation method for a hydrophilic dye-fixing agent for reactive dyeing. According to the method, vinylpyridine, amine monomers and acrylate monomers have a polymerization reaction when radical initiators and assisting initiators exist, and the hydrophilic dye-fixing agent is obtained. The hydrophilic dye-fixing agent prepared with the method has an excellent dye-fixing effect, meanwhile, the hygroscopicity and the hydrophilia of cotton fabric are not affected, and a good hand feeling is achieved.

The invention relates to a color fixing agent and a preparation method thereof. An alkaline-resisting aldehyde-free color fixing agent is a cationic polymer formed by the polymerization reaction of acrylamide, butyl acrylate and epoxy chloropropane. A method for preparing the alkaline-resisting aldehyde-free color fixing agent comprises the ingredients as follows: 10%-35% of acrylamide, 15%-45% of butyl acrylate, 10%-40% of epoxy chloropropane, 5%-13% of hydrochloric acid and 0.1%-1.5% of an initiating agent; and comprises the following steps: adding acrylamide and butyl acrylate under normaltemperature and raising the temperature; adding epoxy chloropropane at 60 DEG C and maintaining the temperature for 10-18 minutes; raising the temperature to 80 DEG C to add the initiating agent and maintaining the temperature for 30 minutes; raising the temperature to the range from 120 DEG C to 130 DEG C, and persistently reacting for 3-4 hours; adding hydrochloric acid for acid cleaning, temperature reduction, neutralization and discharging to obtain the alkaline-resisting aldehyde-free color fixing agent. The invention is quite strong in resisting alkaline and high temperature, is free from color variation when treating the fabrics, and has no influence on chlorine fastness, light fastness and perspiration-light fastness.

Disclosed is novel substitutive alkali. The novel substitutive alkali is prepared from, by weight, 73-82% of organic alkali and potassium carbonate, 10-15% of buffer agent and 8-12% of additive. The novel substitutive alkali has the advantages that wet rubbing fastness values of the novel substitutive alkali and sodium carbonate are close, the wet rubbing fastness values are up to Grade IV when the novel substitutive alkali is used for cotton fabrics dyed by reactive dark blue SGE and reactive blue SPR dyes and fixed, and the novel substitutive alkali is up to or superior to fixation performance of highly-condensed dyeing substitutive alkali and the sodium carbonate.