134results about How to "Deep color" patented technology

The present invention discloses a method for treating heavy metal sludge by using stainless steel molten slag. The method comprises drying crushing, material matching mixing, pressing molding, drying, tank bottom material spreading, smelting reduction, gas purification, molten slag treating, metal recovery and other steps, and specifically comprises that: after heavy metal sludge is subjected to pre-treatment, a certain proportion of ingredients are matched, and the sludge agglomerate is adopted as the bottom spreading material and is placed into a stainless steel molten slag tank to carry out a harmless treatment on the sludge agglomerate. According to the present invention, the characteristics of high production amount, high temperature and rich sensible heat resource of the stainless steel molten slag are adopted, and the stainless steel molten slag is adopted to treat the heavy metal sludge, such that the harmless treatment on the hazardous components and the resource on the valuable material are achieved, the method is the new attempt crossing the industry, and the waste heat resource can be effectively utilized so as to achieve the waste treatment adopting the waste.

The invention relates to a method for extracting, separating and purifying enramycin from enramycin fermentation liquor. The method comprises the following steps of: performing heat treatment on the enramycin fermentation liquor, filtering, centrifuging, and collecting thalli; adding a methanol solution into the thalli, performing ultrasonic treatment, and filtering; acidifying and alkalizing filtrate, decoloring, adsorbing a decoloring solution by using macroporous adsorption resin, eluting by using methanol, collecting eluent, performing concentration and crystallization, and performing freeze-drying to obtain the enramycin. The method for extracting the enramycin has the advantages that: the required time is short, the product purity is high, the process is simple, and the operating cost is low.

The invention discloses a dyeing treatment process for pure cotton fabrics based on pure natural biological preparations, which is designed for solving the technical problems that the environment is seriously harmed in an existing pure cotton fabric dyeing treatment process, and the human health is harmed in an application process. The adopted technical scheme is as follows: the dyeing treatment process comprises the steps of singeing, desizing, boiling-out, bleaching, dyeing, softening treatment and preshrinking treatment, and the key point is that biological preparations, which are respectively a desizing enzyme solution, a boiling-out enzyme solution, glucose oxidase solution and a plant dye, are respectively adopted in the steps of desizing, boiling-out, bleaching and dyeing. The dyeing treatment process has the technical effects that the operation is simple; the pure natural biological preparations almost do not contain any toxic substance, and wastewater produced in the treatment process is less and biodegradable, so that under the premise of keeping the characteristics such as softness, sweat absorption, comfortableness and naturalness and the like of pure cotton fabrics, the harm to the environment is alleviated, and the harm to human body is avoided, and therefore, the process has a zero-pollution environmental friendliness characteristic.

The invention discloses a method for dyeing polyphenylene sulfide fiber or fabric. The method comprises the following steps: treating the polyphenylene sulfide fiber or fabric, soaking the polyphenylene sulfide fiber or fabric into a high-temperature high-pressure dyeing machine filled with dyeing solution in a bath ratio of 1: 10-50, heating the polyphenylene sulfide fiber or fabric to between 100 and 140 DEG C at a heating sped of 0.5 to 5 DEG C per minute, preserving the heat and dyeing the polyphenylene sulfide fiber or fabric for 10 to 60 minutes, and performing reductive cleaning, water washing and drying on the polyphenylene sulfide fiber or fabric. Based on the weight of the polyphenylene sulfide fiber or fabric, the dyeing solution comprises 0.5 to 5 percent of disperse dye, 1 to 8g / L of dyeing carrier, 0 to 2g / L of pH adjustor, 0 to 5g / L of levelling agent, 0 to 1g / L of chelated dispersing agent and diluent. The method can successfully dye the polyphenylene sulfide fiber or fabric, has the advantages of high dyeing rate, deep and thick dyed color, good color fastness, soft handfeel, low dyeing cost and simple and feasible use and operation, can be expanded in application of civilian textiles, and is convenient for popularization and application.

The invention provides a preparation method of bisphenol A novolac phenolic resin, which comprises the following steps: bisphenol A is added in solvent with the weight being 25-100 percent of the weight of the bisphenol A, acidic catalyst with the weight being 0.7 to 2 percent of the weight of the bisphenol A, formaldehyde is continuously added at the temperature of 70-110 DEG C for 0.25-2.5 hours, all reactants react for 1-10 hour(s) at the temperature of 70-110 DEG C, and the reactants are heated and depressurized to remove the solvent, thus the bisphenol A novolac phenolic resin is obtained, wherein the mol ratio of formaldehyde and the bisphenol A is 0.3:1 to 3:1. The prepared bisphenol A novolac phenolic resin has the residual quantity of the bisphenol A of smaller than 15 percent, the softening temperature of 100-125 DEG C, and the dissolution iscosity of 63-67 percent of butanone solvent at 25 DEG C of 4000-6000 Pa.s. The invention has excellent physical property under the condition that the molecular weight is kept higher.

The invention discloses a glucose ester group quaternary ammonium salt cationic surfactant. The structural formula of the glucose ester group quaternary ammonium salt cationic surfactant is shown in the description, wherein Glu is a glucose group, R is a C8-C18 long chain alkyl group, X is chlorine, bromine or iodine, and n equals to 1-3. The glucose ester group quaternary ammonium salt cationic surfactant not only is green, environment-friendly, nontoxic, and free of irritation as sugar-based surfactants but is antiseptic, flexible, antistatic and the like as quaternary ammonium salts, has non-ionic glucose hydrophilicity, has fine compound property and synergistic effect with anionic surfactants, and is multifunctional.

The invention discloses a method for decoloring printing and dyeing waste water of reactive dye and belongs to the technical field of waste water treatment. The method is characterized by comprising the following steps: adding oxidant with the dose of 0.5 to 10 g / l into the printing and dyeing waste water of the reactive dye and treating at the temperature of 20 and 55 DEG C for 5 to 60 minutes, wherein the oxidant is oxygen-containing oxidant or chlorine-containing oxidant; adding flocculant with the dose of 0.5 to 15 g / l, wherein the flocculant is bivalent or trivalent metal inorganic salt; adjusting the pH value of the waste water to 8 to 14; standing for 5 to 10 minutes; and performing centrifugal treatment at the rotating speed of 1,500 to 5,000 rpm for 2 to 12 minutes. The method for decoloring the printing and dyeing waste water of the reactive dye has important practical significance of saving energy and reducing emission in the textile printing and dyeing industry and solving the chromaticity of the printing and dyeing waste water of the reactive dye.

The invention relates to the technology of deep processing of ganoderma lucidum spore, in particular to a method of extraction and grading purification of ganoderma lucidum spore oil by supercritical CO2, which comprises the following steps: breaking shell, granulating, palletizing and screening, extracting the ganoderma lucidum spore oil, grading depressurizing, and collecting the ganoderma lucidum spore oil in step; putting ganoderma lucidum spore powder granules into an extracting tank, introducing supercritical CO2 at the pressure of 10-30 MPa and the temperature of 35-60 DEG C; enabling supercritical CO2 dissolved with the ganoderma lucidum spore oil into a primary separating tank by the extracting tank with the pressure of 10-12 MPa and the temperature of 40-60 DEG C, and collecting in step in 0.5-1.0hr / step; and entering a secondary separating tank with the pressure of 5-7 MPa and the temperature of 40-60 DEG C through depressurizing by a valve, collecting in step in 0.5-1.0hr / step, wherein the total time is for 5-7 hr. Since the flows of grading pressurization and step-collection are adopted, the oil and the impurities can be separated online, and the purity of the oil can be improved.

The invention relates to an auricularia polytricha cultivation material which is characterized in that brewery leftovers broad bean skins, residue of soya and vinegar residue are taken as major raw materials. The moisture content of the cultivation material ranges from 63% to 65%. The invention also provides a method for preparing the cultivation material. Compared with the conventional cultivation material, the auricularia polytricha cultivation material has the following advantages: 1, materials are obtained from local sources so that the production cost is greatly reduced, 2, the cultivation material is rational in proportioning and complete in nutrition, the hypha grows vigorously, and the auricularia polytricha is quick to emerge, good in spreading, deep in color and high in yield, and 3, the channel of the cultivation raw material is expanded and new source is developed for insufficient edible fungus raw materials. The auricularia polytricha cultivation material has the social benefit that the broad bean skins are used for substituting for sawdust so that a part of fungus-forest contradiction can be alleviated, and the residue of soya and the vinegar residue are used for substituting for bran so that the waste is utilized; and therefore, the auricularia polytricha cultivation material is advantageous for energy conservation and emission reduction.

The invention discloses a brewing method of lower-alcohol blueberry health-care wine. The method comprises the steps of blueberry selection and processing, tea preprocessing, raw material blending, ethanol fermentation, ageing, clarification stabilizing processing and the like. The method uses an optimized blue rain variety of blueberries as raw materials, and meanwhile tea leaching liquid, prebiotics and soluble dietary fibers are added; the lower-alcohol blueberry wine is obtained through raw pulp steeping, high-temperature enzymolysis, high-temperature start, mixed-bacteria synergy and low-temperature long-time fermentation; low-temperature ageing is assisted by microwaves to accelerate wine body mature, and the quality of the fruit wine is improved; a wine body is higher in clarity and is kept in a stable state for a long period of time through clarification stabilizing processing; the taste of the wine is improved and meanwhile a health-care function is increased for the wine by adding a functional sweetener. By the adoption of the process, the high-quality lower-alcohol blueberry wine having good color, fragrance and taste and integrating nutrition and health care can be obtained.

The invention discloses a new preparing method of allyl alcohol random polyether glycidyl ether. The preparing method comprises the steps of adding an allyl alcohol random polyether raw material in a jet loop reactor based on a venturi effect through a feed inlet of materials, conducting deoxygenization and pumping into inert gases to be subjected to replacement protection, and opening an external circulating pump to be subjected to high speed spraying mixture; controlling the temperature at 30-120 DEG C, slowly adding an epoxy chloropropane raw material and an alkali raw material into the jet loop reactor through the feed inlet of epoxy chloropropane and the feed inlet of the material respectively, and the like. Due to the fact that the system belongs to a system of kinetic control, and a side reaction is inhibited sufficiently, thus the selectivity of a reaction system is higher. The new preparing method is especially applicable to allyl alcohol random polyether of which molecular tail end is secondary hydroxyl, the color luster of the finally obtained product, namely, the allyl alcohol random polyether glycidyl ether product, is less than 40, and the stop end rate of the product is more than 96%.

The invention discloses a special water-holding and controlled-release fertilizer for wheat. The special water-holding and controlled- release fertilizer for wheat comprises an inner fertilizer layer, a middle water-holding layer and an outer controlled-release layer, wherein the outer controlled-release layer is made of degradable materials; the middle water-holding layer is made of super absorbent resin; the inner fertilizer layer is special compound fertilizer for wheat. According to the invention, after the special water-holding and controlled-release fertilizer for wheat is applied, with the degradation of the controlled-release layer, the special fertilizer for wheat is gradually released, so that the long-acting release of the fertilizer is ensured and the demand for fertilizer in the whole growing period of the wheat is met; the decomposition and release time of the fertilizer is prolonged; the improvement on utilization ratio of the fertilizer nutrients is facilitated; therefore, the purposes of prolonging the available period of the fertilizer and promoting agricultural increase in yield are reached; the special water-holding and controlled-release fertilizer for wheat has the water-holding function and can effectively inhibit moisture evaporation and reduce the seepage and loss of soil moisture; the special water holding controlled release fertilizer for wheat is nontoxic, safe, environmentally friendly, odourless, and does not pollute plants, soil or underground water.

The invention discloses a method for dyeing denim yarn with natural indigo blue. The method comprises the following steps: dyeing denim cotton yarns by using a leuco body multi-time padding oxidationmethod, carrying out vatting reduction at 40-50 DEG C, and dyeing denim yarns according to processes of pre-dyeing treatment, dyeing, oxidation, dyeing, oxidation, dyeing, oxidation, dyeing, oxidation, dyeing, oxidation, dyeing, oxidation and aftertreatmenet with 0.5-2g / L of natural indigo blue, 1.5-4.5g / L of sodium hydroxide, 0.75-1.8g / L of sodium hydrosulfite, 0.25-0.6g / L of a sodium hydrosulfite stabilizer, 10-15g / L of a dyeing acceleration agent sodium chloride or sodium sulfate and 2g / L of a penetrant JFC2. By adopting the dyeing method of multiple times of padding, rolling and oxidation,the dyeing fastness of the denim yarns can be improved, dyeing and oxidation can be both carried out under a room temperature condition, no heating is needed, energy conservation and environment protection can be achieved, reduction is carried out by using a sodium hydrosulfite method, a high reduction velocity can be achieved, and a stable dyeing effect can be achieved.

The invention discloses a compound fertilizer formula for pear tree planting; the compound fertilizer formula is composed of the following raw materials in parts by weight: 5-15 parts of vinasse, 10-20 parts of a soybean meal powder, 15-25 parts of corn stalks, 30-50 parts of chicken manure, 1-3 parts of bacillus mucilaginosus, 1-3 parts of lactobacillus plantarum, 1-3 parts of yeast, 3-5 parts of hemicellulase, 3-5 parts of a straw fermentation agent, 3-5 parts of brown sugar, 10-20 parts of urea, 3-5 parts of monopotassium phosphate, 10-20 parts of monoammonium phosphate, 3-5 parts of borax, 3-5 parts of zinc sulfate, 10-20 parts of potassium sulfate, 5-15 parts of magnesium sulfate, 3-5 parts of copper sulfate, 3-5 parts of manganese sulfate, and 1-3 parts of sodium molybdate. Through reasonable compounding of various nutrient elements required for pear growth, the compound fertilizer formula can meet a variety of nutrients required for the pear growth, is poisonless, tasteless, safe and reliable, lasting in fertilizer efficiency and harmless to the human body and also has the characteristic of long fertilizer efficiency, leaves are large, colors are deep, fruit coloring is good, the taste is good, and the yield is high.

The invention relates to a deep processing technology of coix seeds, in particular to a method for preparing coixenolide and coix seed oil on line by utilizing supercritical CO2 step-by-step extraction and segmental collection. The method for preparing the coixenolide and the coix seed oil on line by utilizing the supercritical CO2 step-by-step extraction and segmental collection comprises the following steps of: crushing and granulating; sieving integral granules; carrying out the supercritical CO2 step-by-step extraction and segmental collection; placing coix seed powder granules into a material basket of a 24 L extraction kettle, and introducing supercritical CO2 into the 24 L extraction kettle, wherein pressure is stepwise increased between 10 MPa and 30 MPa, and extraction temperate is 40-60 DEG C; enabling the coixenolide and the coix seed oil to enter a separation kettle by being depressurized through a valve from the 24 L extraction kettle, wherein the pressure inside the separation kettle is between 5 MPa and 7 MPa, the temperature is 40-60 DEG C, and CO2 flow rate is 100-130 L / hour; and segmentally collecting according to extraction time at 0.5-1.0 hour / segment and the total time of 5-5.5 hours. The invention can realize the on-line separation of water contained in the coix seed powder granules, the coixenolide, the coix seed oil and other impurities by adopting the step-by-step pressurization and segmental collection process and overcomes the defect that the conventional extraction method needs to further separate an extractive by adopting other separation technologies.

The invention discloses a brewing method using medium-dry mulberry. The brewing method comprises the steps of drying fresh mulberry into medium-dry mulberry which is 40 to 50% of the fresh mulberry by weight, then juicing, fermenting with the juice as the raw materials until the soluble solid content does not decrease longer and the bubbles do not generate, clarifying, and then filtering to obtain the mulberry-made wine. The obtained mulberry-made wine has unique flavor, and relatively deep color of amaranth.

The invention provides a water circulating device and a water circulating system for fiber production, relates to the technical field of sewage treatment, and aims to solve the technical problem thata desired treatment effect cannot be achieved by the conventional treatment method because a large amount of sewage produced during cotton processing has the characteristics of large volume, high organic pollutant content, deep color, large water quality change and the like. The invention relates to the water circulating device for the fiber production. The water circulating device for the fiber production comprises a filter tank, wherein a grid assembly is arranged inside the filter tank; the filter tank is sequentially communicated with an adjusting tank, an anaerobic tank, a multi-stage biological treatment tank, a coagulation reaction tank, a sedimentation tank, a disinfecting tank, a floatation tank and a recycling tank. The invention further relates to the water circulating system for the fiber production. The water circulating system for the fiber production comprises the water circulating device for the fiber production. The water circulating device for the fiber production andthe water circulating system for the fiber production can treat the sewage better, so that the sewage can meet recycling and discharge standards.

The invention discloses a breeding method of three-line hybrid rice of aromatic purple rice. The method comprises the following steps: (1) screening a maintaining line I and a restoring line VI of the aromatic purple rice, with homoallelic purple rice genes and aromatic genes, to be used as parental donor materials for breeding purple rice genes (P) and aromatic genes (a) of the maintaining line and the restoring line of the aromatic purple rice; (2) respectively hybridizing the maintaining line I and the restoring line VI with a maintaining line with high combining ability and a restoring line with high combining ability, and bringing in the purple rice genes (P) and the aromatic genes (a) so as to obtain a maintaining line III and a restoring line VIII of aromatic (aa) purple rice (PP); hybridizing and backcrossing the maintaining line III of aromatic (aa) purple rice (PP) with a three-line sterile line so as to obtain a three-line sterile line V of aromatic (aa) purple rice (PP); (3) mating the sterile line V with the restoring line VIII so as to obtain the hybrid rice IX of aromatic (aa) purple rice PP or Pp). The obtained hybrid rice of the aromatic purple rice is strong in aroma, has a purple seed coat, is high in yield, and is wide in application range.

The syrup specially for beer consists of glucose 5-15 wt%, maltose 45-70 wt%, maltotriose 10-20 wt%, maltotertrose and higher maltose 10-20 wt%; contains amino nitrogen of 120-180 mg / L; and has saccharide to non-saccharide ratio of 1 to 0.15-0.35. The present invention is prepared by means of advanced bioengineering technology, has stable quality and low production cost, and may be used in replace rice and malt partially or completely in beer production. The syrup may be used in the amount over 50 % through direct addition to boiling pot to lower beer producing cost and raise beer quality.

The invention belongs to the technical field of phospholipid processing, and particularly relates to a hydrated powdered phospholipid. The powdered phospholipid comprises the following main components: phospholipid, grease and water, the water content is less than or equal to 2g / 100g, the content of acetone insoluble substances is 92.5-95.5 g / 100g on the basis of dry basis, and the sensory index is yellow powder. The problems of low phospholipid content, deep color, long drying time and lack of industrial feasibility of the existing hydrated powdered phospholipid are solved; the hydrated powdered phospholipid can replace solvent powdered phospholipid to eliminate pollution of the solvent to the environment and potential food safety hazards caused by solvent residues, and the production cost is reduced.

The invention discloses a production method of soy sauce flavor type wine. The production method comprises the steps of preparing grains, soaking the grains, steaming the grains, accumulating and fermenting, feeding into a tank for fermenting, and distilling to get the wine. After a yeast is added into middle-layer fermented grains obtained after distilling to get the wine for the second time andthe third time, accumulating and fermenting as well as feeding into the tank for fermenting are cyclically carried out for two times, the next round of distilling is carried out, and a scorch aroma taste of the soy sauce flavor type wine is improved, so that the overall quality of the wine is improved. Before the sauce wine is fermented in a fermentation pit for the seventh time, an enhanced yeastis added in an accumulating process and then enters the fermentation pit so as to be fermented, and compared with traditional sauce wine, the liquor yield of the seven-time wine is improved, and thescorch aroma taste is better, so that the overall scorch aroma quality of the wine is improved.

The invention discloses a processing method of American ginseng, in particular to a method for processing and producing soft American ginseng; the method includes the following steps: carrying out low temperature treatment to American ginseng under the temperature from 1 DEG C to 10 DEG C, implementing a first stage of drying treatment at the temperature not higher than 35 DEG C, then raising temperature slowly, carrying out a second stage of drying treatment at the temperature not higher than 41 DEG C, and gradually lowering temperature so as to obtain finished products. After the second stage of drying treatment, temperature can also be raised to 32 to 35 DEG C to carry out a third stage of drying treatment. The soft American ginseng processed by the method of the invention has good fineness and quality as well as promising market prospect.

The invention discloses a specific composite fertilizer of pear, which comprises the following parts: 100-300g aquacare, 100-300g sulphur ammino, 50-100g diammonium phosphate, 50-100g monoammonium phosphate, 100-200g potassium sulfate, 200-400g soy fertilizer, 100-300g humic acid, 60-80g microelement boron, ferric, zinc, manganese and 20-30g rare earth.

The invention relates to a manufacturing process for an archaistic wood floor. The manufacturing process comprises four manufacturing processes including a base material processing process, a wood bark processing process, a chemical change treatment process and an archaistic process; the manufacturing process provided by the invention can be used for implementing batch production of archaistic wood floors and can obtain the archaistic wood floors which have water resistance, corrosion resistance and worm damage resistance; the ageing degree of the floors can be regulated by regulating the soaking time; the archaistic wood floors with various colors and various stripes can be manufactured; the stripes on the archaistic wood floors are uniform enough in depth, high in stereoscopic impressionand full of changes; the naturally shown hue is archaistic and the texture is clear.

The invention discloses a structural chromogenic textile with asymmetric wetting characteristics as well as a preparation method and application thereof. The preparation method comprises the steps of1), configuring structural chromogenic ink I comprising hydrophobic colloidal microspheres and structural chromogenic ink II comprising hydrophilic colloidal microspheres; 2) coating the first surfaceof a textile base material with the structural chromogenic ink I and performing curing treatment to obtain the textile base material with a hydrophobic photonic crystal layer on the first surface; and 3) coating the second surface of the textile base material treated in the step 2) with the structural chromogenic ink II, and performing curing treatment to obtain the structural chromogenic textilewith the asymmetric wetting characteristics. The preparation method is simple and convenient in process, easy to implement and high in universality, and integration of textile coloring and asymmetricwettability finishing is realized; and the front surface and the back surface of the structural chromogenic textile prepared through the method have different wetting properties, and the structural chromogenic textile is bright, natural, deep and lifelike in color and has the advantages of being ecological and environment-friendly.

The invention aims to solve the problems that wire rod pickling and phosphating procedures are implemented separately, resulting high treatment cost of waste water generated by washing, phosphating films are not secure enough, the fracture phenomenon occurs during drawing, and the content of corrosive components in phosphating agents is high. The invention provides a rust-removing phosphating solution for wire rod drawing, and a preparation method thereof, and belongs to the technical field of rust removal and phosphating treatment of metal surfaces. The rust-removing phosphating solution forthe wire rod drawing comprises, by mass, 20%-50% of concentrated phosphoric acid, 1%-10% of concentrated nitric acid, 1%-10% of zinc oxide, 2%-10% of dihydric phosphate, 1%-10% of nitrate, 0.5%-5% ofmanganese carbonate, 0.2%-5% of complexing agents, 0.05%-1% of fluorine-containing surfactants and the balance water. After treatment by the rust-removing phosphating solution provided by the invention, a gray-black uniform and dense phosphating film is formed on the surfaces of steel wires and welded steel tubes, and has better lubrication effects in the drawing and cold working process.

The invention discloses a positioning bronzing method for a wet transfer printing fabric. The method includes, firstly, coating the printing surface of a printing carrier with a release layer and an ink absorption layer; secondly, coating a bronzing printing part with a hot melt adhesive slurry; then, sleeving and printing patterns on the coloring printing part to obtain a wet transfer carrier containing a hot melt adhesive; bonding and hot pressing the wet transfer carrier with a wet fabric to be printed to obtain a dye printing fabric with the hot melt adhesive; and finally, bonding and hotpressing the dye printing fabric with a foil film to obtain the positioning bronzing printing fabric. According to the method, positioning bronzing of wet transfer printing is realized, visual comfortof the printed fabric is improved, and the selling price of the printed fabric is improved; especially in the current increasingly fierce market competition, product differentiation is realized, andthe market competitiveness of the product is improved.

The invention provides a preparation method of isocyanurate polyether polyol. The preparation method comprises the steps: (1) mixing an initiator tris(2-hydroxyethyl)isocyanurate with a catalyst so asto obtain an initial mixture; (2) adding an epoxy compound to the initial mixture dropwise, and performing heating for a solid-liquid reaction so as to obtain a primary reaction product; (3) adding the epoxy compound to the primary reaction product continuously, and performing a gas-liquid reaction so as to obtain a secondary reaction product; and (4) cooling the secondary reaction product so asto obtain the isocyanurate polyether polyol, wherein the temperature of the solid-liquid reaction is not more than 110 DEG C, and darker color, caused by local overheating, of the final product is avoided through control on the temperature of the solid-liquid reaction at not more than 110 DEG C, so that the reaction is safe and controllable, and the energy consumption and cost are reduced.

The invention provides a preparation method of polyester staple fiber used for vortex spinning, which takes PTA and IPA as diacid, and takes EG as dihydric alcohol for performing an esterification reaction, then DEG is added, and is polycondensated under catalysis of a catalyst to prepare copolyester, and then the copolyester is treated through a polyester staple fiber spinning technology to prepare the polyester staple fiber used for vortex spinning. The IPA and DEG take effect together, the crystallization property of copolyester is decreased, the fiber modulus is reduced by 7-50%, breaking tenacity is reduced by 3-10%, hand feel flexibility can be greatly enhanced, and vortex spinning requirement can be satisfied.

The invention provides sulfur-free dried persimmons and a making method thereof, and belongs to the field of food processing. The making method mainly comprises the following steps of selecting high-quality persimmons as raw materials, putting the selected persimmons into an ethanol solution, performing soaking under an ultrasonic condition, taking out the soaked persimmons, immersing the taken-out persimmons in warm water for soaking, then peeling the soaked persimmons, performing pricking to form holes, performing drying in a vacuum microwave dryer, putting the dried persimmons in a softener, and performing soaking under a vacuum condition; then performing soaking at ordinary pressure, taking out the soaked persimmons, and performing drying once again; spraying composite color protectionfluid to the surfaces of the dried persimmons, wherein the composite color protection fluid is prepared by mixing citric acid with glutathione, a licorice root extract, a rosemary extract, a pagodatree flower bud extract and water; and finally baking the treated persimmons in substep, and after baking is finished, packaging the baked persimmons so as to obtain the sulfur-free dried persimmons. The making method disclosed by the invention is safe and environmental-friendly, hazardous substances are not added, the harsh taste of the dried persimmons can also be removed, and the obtained dried persimmons are good in mouth feel, long in quality guarantee time, and convenient to eat, and are suitable for various crowds to eat.