450 results about "Ethylene glycol ester" patented technology

The invention relates to the manufacturing field of a special extrusion grade T-die thermoplastic elastomer, in particular to a manufacturing formula and a manufacturing method thereof. The formula comprises the following components: 20-40% of 4,4'-diphenylmethane-diisocyanate, 15-70% of polybutylene adipate the molecular weight of which is 1000 or 2000, 0-50% of poly butylene glycol adipate the molecular weight of which is 2000, 5-15% of 1,4-butanediol, 0-5% of glycol, 0.1-1.0% of antioxidant, 0.1-1.0% of lubricant, 0.001-0.1% of environment-friendly catalyst, 0.1-1.0% of ultraviolet absorbent, 0.1-1.0% of light stabilizer and 0.1-1.0% of hydrolysis resistant agent. Continuous production processes are used for synthesizing TPU (thermoplastic polyurethane). The product of the invention has the advantages of stable quality, excellent performance, few T-die extrusion crystal points, good transparency (more than 4mm), stable extrusion, no occurrence of separation of additives, high hydrolysis resistance and high UV (ultraviolet) resistance, and the indexes and the performance of the product can reach the indexes of international like products. The invention provides a thermoplastic polyurethane elastomer and a manufacturing method thereof.

The invention relates to polyester fibres and a preparation method thereof. The raw material of the polyester fibres is modified polyester which consists of a terephthalic acid chain segment, an ethylene glycol chain segment and a branched chain-containing dihydric alcohol chain segment. The preparation method of the polyester fibres comprises the following steps: performing esterification reaction on terephthalic acid and branched chain-containing dihydric alcohol under the catalysis of concentrated sulphuric acid to obtain terephthalic acid dihydric alcohol ester; then, preparing the terephthalic acid and the ethylene glycol into slurry, and performing the esterification reaction on the slurry to obtain the terephthalic acid ethylene glycol ester; finally, stirring and mixing the terephthalic acid dihydric alcohol ester and the terephthalic acid ethylene glycol ester, and performing condensation polymerization in a low vacuum stage and a high vacuum stage under the action of a catalyst and a stabilizing agent to obtain modified polyester; metering, extruding, cooling, oiling, stretching, heat-setting and winding the polyester to prepare the polyester fibres. The increasing amplitude of the spatial gaps of the polyester fibres is much higher than that of branched chain-free polyester fibres at the same temperature, which is beneficial to the degree of micro particles, such as a dye, that enter the polyester; the dyeing rate is improved.

The invention discloses a phase-change heat conducting material and the preparation method, mainly comprising the silicone 10 to 40 wt percent, the ethylene propylene diene rubber 2 to 20 wt percent, the heat conducting powder 40 to 70 wt percent, the paraffin 5 to 25 wt percent, the tackifier 5 to 35 wt percent and the resin acceptor 0.1 to 1.5 wt percent. The phase-change heat conducting material can be coated on the copper foil, the aluminum foil, the polyethylene naphthalatc film or the polyimide film in solution state in order to increasing the strength. The dissolved with the mixed refrigerant is solid in ambient temperature, so can be conveniently fixed between the radiator and the electronic device, GPU and CPU. When the temperature of the device is up to 40 to 70 degree C, the dissolved with the mixed refrigerant starts to soften and flow, so can fill with the air gap between the interfaces well, reduce the thermal resistance and accelerate the heat transference. The phase-change heat conducting material can be perfectly peeled off when maintaining or replacing the device and also can reuse.

The invention relates to a multi-hole polyester fiber DTY (draw textured yarn) and a preparation method thereof. According to the preparation method, modified polyester is spun to prepare the multi-hole polyester fiber DTY by the aid of a multi-hole spinneret plate; spinneret holes in the multi-hole spinneret plate are elliptically arrayed, namely, the hole centers of the spinneret holes are positioned on concentric ellipses, the concentric ellipses are series ellipses, long axes of the all ellipses are collinear, short axes of the all ellipses are collinear, the modified polyester is used for preparing a POY (polyester pre-oriented yarn) and then further processed to obtain the multi-hole polyester fiber DTY. A preparation method of the modified polyester includes the steps: performing reaction for terephthalic acid and ethylene glycol to prepare terephthalic acid ethylene glycol ester; adding the terephthalic acid and dihydric alcohol with branching chains, and performing reaction for mixture to prepare terephthalic acid dihydric alcohol ester; continuing to react to obtain the modified polyester. According to the method, prepared fibers are excellent in performance, the deviation ratio of linear density of the DTY is smaller than or equal to 2.0%, a breaking strength CV (variation coefficient) value is smaller than or equal to 4.0%, a breaking elongation CV value is smaller than or equal to 8.0%, and a CV value of crimping shrinkage rate is smaller than or equal to 8.0%.

Disclosed is a method for making pH sensitive PVDF hollow fiber intelligent film and products made thereby, wherein the making process comprises the steps of, (1) steeping the film in pure water for 24 hours, (2) preparing 10-20% alkali solution, and charging 3-4gl / L of tetrabutylammonium bromide, charging immersed film in alkali solution, heating by water bath, (3) preparing 1-2 mol / L of AAC solution, charging dimethyl formamide solution by 40-50ml / L, mixing uniformly, charging alkali-treated film in the mixed solution, steeping 10-20 minutes at room temperature, preparing solution of crosslinking agent 0.01-0.09mol / L and K2S2O3 0.1-0.3g, charging the readily made film into the solution, filling N2 and sealing, water-bathing, heating and washing with deionized water, the crosslinking agent is MBAA or diacrylic acid ethylene glycol ester.

Disclosed is a method for making temperature-sensitive PVDF hollow fibre intelligent film and products made by chemical grafting and copolymerization of NIPA on PVDF film surface, and the making process comprises the steps of, (1) steeping the film in pure water for 24 hours, (2) preparing 10-20% alkali solution, and charging 3-4gl / L of tetrabutylammonium bromide, charging immersed film in alkali solution, water-bathing, heating and washing for later use, the alkali solution is one of KOH, NaOH or LiOH, (3) preparing 1-2 mol / L of NIPA solution, charging dimethyl formamide solution by 40-50ml / L, mixing uniformly, charging alkali-treated film in the mixed solution, steeping at room temperature, preparing solution of crosslinking agent 0.01-0.09mol / L and K2S2O3 0.1-0.3g, charging the readily made film into the solution, filling N2 and sealing, water-bathing, heating and washing with deionized water, the crosslinking agent is MBAA or diacrylic acid ethylene glycol ester.

Provided is a preparation method for an antifogging thin film coating with high light transmission. M-phthalic acid triethylene glycol ester-5-sodium sulfonate (self made), polyethylene glycol 400, isophorone diisocyanate and pentaerythritol triacrylate are employed as main raw materials, dibutyltin dilaurate is employed as a catalyst, dimethylolpropionic acid is employed as a chain extender, acetone is employed as a solvent, and hydrophilic UV prepolymers are prepared; ethyl orthosilicate is employed as a precursor, gamma-methacryloxy propyl trimethoxysilane is employed as a modifier, a sol-gel method is employed, and uniform and stable modified SiO2 sol is prepared; the hydrophilic UV prepolymers and the modified SiO2 sol are subjected to hybridization through a UV curing way, and a thin film coating is obtained. The prepared thin film coating has good hardness and adhesive force, water resistance and high light transmission and good antifogging effects, and can be used for antifog of surfaces of glass and eyeglass. The preparation technology of the thin film coating accords with green environmental protection concepts, curing and film forming are fast, and comprehensive performances are good. The antifogging thin film coating has good market prospect and is suitable for popularization and application.

The invention relates to the technical field of natural skin care products, in particular to an eaglewood whitening facial cleanser and a preparation method thereof. The eaglewood whitening facial cleanser is composed of the following raw materials by mass: 2-8% of an eaglewood extract, 5-18% of a Chinese herb extract, 2-10% of an aloe extract, 1-1.5% of lecithin, 2-4% of TWEEN 80, 4-8% of compound vitamin, 1-2% of citric acid, 7-15% of pyrrolidone carboxylic acid polyglycol ester, 25-40% of cocamidopropyl betaine (CAB-35), and the balance deionized water. The facial cleanser provided by the invention takes pure natural, fragrant and skin care eaglewood and Chinese herb extracts as active ingredients, the active ingredients are compounded with certain emulsification component lecithin and natural vitamin to prepare the facial cleanser. With the efficacy of whitening skin, lightening pigmentation, removing color spots, and keeping skin moisture, the whitening facial cleanser can kill or inhibit bacteria attached on the skin surface, also can delay aging, and promote epithelium regeneration.

A polyethylene terephthalate injection molding composition includes: (a) from about 30 to about 70 weight percent of a polyethylene terephthalate matrix resin; (b) from about 3 to about 60 weight percent of a component selected from reinforcing agents, mineral fillers and mixtures thereof; (c) from 0 to about 25 weight percent of a polymeric impact modifier; (d) a nucleating agent selected from sodium and potassium salts of hydrocarbon carboxylic acids having from 20 to 35 carbon atoms; (e) a plasticizer selected from ethylene glycol esters of hydrocarbon carboxylic acids having from 6 to 35 carbon atoms; and optionally including lubricants, anti-oxidants, pigments, UV-stabilizers, mold release agents and mixtures thereof. The compositions exhibit superior surface when molded into parts, especially surface gloss.

The invention discloses a coenzyme Q10 pharmaceutical composition which mainly comprises components: (1) coenzyme Q10 is active ingredient; (2) one or multiple of polyethylene 15-oxhydryl glycol stearate (Solutol HS 15), polysorbate, PEG, poloxamer, and polyoxyethylene castor oil derived products are solubilizer; (3) one or multiple of midchain monoglyceride and derived products thereof, medium saturated or unsaturated fatty acid are oil component; and (4) injection water is solvent. One or multiple of excipient, chemical inhibitor, and osmotic pressure regulator are added for preparing injection and freeze drying agent. Compared with the traditional coenzyme Q10 pharmaceutical composition, the injection administration coenzyme Q10 pharmaceutical composition has better storage and transportation stability and higher clinical application safety and patient compliance. The injection has simple preparation process, convenient quality control, lower production cost and convenient industrial production.

The invention discloses anti-dandruff shampoo with an effect of improving the microbial flora on the scalp skin. The anti-dandruff shampoo is prepared from the following raw materials: water, polydimethylsiloxane, glycol stearate, sodium lauroyl sarcosine, polyquaternium-10, cetostearyl alcohol, ammonium chloride, vaccinium uliginosum berry extract, celery seed extract, silk hydrolysate, zinc pyrithione, piroctone olamine, EDTA disodium, surfactant, preservatie, artemisinin and rosemary water. The invention further discloses a preparation process of the shampoo. The shampoo can be used for improving the microbial environment of the scalp skin and improving the resistance of the scalp skin and can achieve the effect of effectively removing dandruff and preventing dandruff reoccurrence.

The invention discloses a lithium ion battery cathode aqueous adhesive which is prepared from the following monomers through emulsion polymerization: a hard monomer, a soft monomer, a functional monomer, an acid monomer and a cross-linking agent, wherein the weight ratio of the hard monomer to the soft monomer to the functional monomer to the acid monomer to the cross-linking agent is (5-15):(5-18):(2-10):(1-3):(0.05-0.2); the functional monomer is one or a combination of more of hydroxypropyl methacrylate, cyclohexyl methacrylate, methyl tetrahydrofurfuryl acrylate, and acrylic acid monoethylene glycol ester. The adhesive has the advantages that an appropriate water absorption rate, adhesion performance and relatively good capacity retention rate can be maintained. Meanwhile, the invention further discloses a preparation method of the adhesive and a cathode with the adhesive, belongs to the field of high polymer materials, and particularly belongs to the field of lithium ion battery electrode materials.

The invention discloses a black glass fiber reinforced PBT (Polybutylece Terephthalate) composite material capable of performing laser welding and a preparation method of the composite material. The composite material is composed of the following components: PBT resins, terephthalic acid and ethylene glycol ester copolymer and analogues, polycarbonate, modified glass fibers, a flexibilizer, a compatilizer, a lubricating agent, an antioxidant, an ester exchange inhibitor and black powder. The used raw materials are wide in source, the addition amount is low, the preparation method is simple, the operability is high, industrial production is easily realized, and the cost performance of the product is high; the black high-laser transmission composite material is excellent in mechanical property, and the requirements on materials in the fields of automobiles, electronics and electrical appliances and the like are met; laser welding of the glass fiber reinforced PBT composite material can be realized, the constraint of 'black-to-black' plastic laser welding is perfectly overcome, and the application range of a laser welding process is widened.

The invention provides for a method of enhancing immunological responses to an antigen in a vaccine formulation, and for a vaccine formulation that provides for an enhanced immunological response to an antigen. In the method and formulation the antigen is administered with an adjuvant which adjuvant comprises a solution of nitrous oxide gas in a pharmaceutically acceptable carrier solvent for the gas and which adjuvant includes at least one fatty acid or ester or other suitable derivative thereof selected from the group consisting of oleic acid, linoleic acid, alpha-linolenic acid, gamma-linolenic acid, arachidonic acid, eicosapentaenoic acid [C20: 5ω3], decosahexaenoic acid [C22: 6ω3], ricinoleic acid and derivatives thereof selected from the group consisting of the C1 to C6 alkyl esters thereof, the glycerol-polyethylene glycol esters thereof and the reaction product of hydrogenated natural oils composed largely of ricinoleic acid based oils, such as castor oil with ethylene oxide.

The invention relates to an embossed printing paste for velvet fabrics and a preparation method thereof. The embossed printing paste is prepared by blending an emulsion and a thickening agent, wherein the emulsion is prepared by triggering and polymerizing itaconic acid, butyl acrylate, acrylic acid ethyl ester, dimethylacrylic acid tetraethylene glycol ester, acrylonitrile, fatty alcohol-polyoxyethylene ether XL-90, ammonium persulfate and deionized water. The embossed printing paste has the characteristics of good transparency, high temperature non-yellowing, good fastness, soft hand feel,bright color, non-formaldehyde, no APEO (Alkylphenol Ethoxylates), good luster and simple production technology. The embossed printing paste is used for printing on the velvet fabrics so that the valve fabrics have very prominent concave-convex effect, clear pattern contours and good degree of finish.

The invention belongs to the technical field of medicine and relates to a redox dual-sensitive-bond bridged small-molecular prodrug and its self-assembled nanoparticles. The redox dual-sensitive-bondbridged small-molecular prodrug is made by connecting an antitumor drug with a carbon chain containing an unsaturated bond and active hydroxyl group through a selenium bond or a sulfur bond. The antitumor drug is an anticancer drug containing active hydroxyl group or amino group, selected from taxane groups, nucleoside compounds, anthracycline compounds or camptothecin compounds; the carbon chaincontaining the unsaturated bond and active hydroxyl group is vitamin E, ethylene glycol dioleate, citronellol, oleyl alcohol, linoleny alcohol or linoleic alcohol. The selenium bond is a mono-seleniumbond or di-selenium bond; the sulfur bond is mono-sulfur bond or di-sulfur bond. The redox dual-sensitive-bond bridged small-molecular prodrug can be self-assembled into nanoparticles, arriving at high drug-loading capacity, good stability, low toxic and side effect, specific quick drug release to tumor sites, and improving antitumor activity.

The invention discloses a silicon-free liquid shampoo, comprising the following components in percentage by weight: 15%-20% of sodium lauryl polyoxyethylene ether sulfate, 2%-8% of cocamidopropyl betaine, 1%-8% of coconut oil acid diethanoamide, 1%-2% of glycol stearate, 0.1%-0.5% of cellulose quaternary ammonium salt, 0.1%-0.3% of citric acid, 0.5%-2% of sodium chloride, 0.01%-0.1% of kaisong (Chinese character), 0.1%-1% of essence, 0.05%-0.2% of ethylenediamine tetraacetic acid disodium salt and the balance of water. The liquid shampoo disclosed by the invention does not contain silicon oil, and is free of a side effect on hair.

The invention provides a preparation method of fresh ginger liquid shampoo. The preparation method of fresh ginger liquid shampoo comprises the following steps of: heating a proper amount of distilled water to 80 DEG C, sequentially adding 1-3% of phthalic acid, 0.5-4% of glycol stearate, 5-10% of sodium dodecyl alcohol ether sulphate and 3-5% of cocamidopropyl while stirring, stirring until the added components are dissolved, cooling to 60 DEG C, adding 1-5% of ammonium lauryl polyether sulphate, 3% of cocoamidopropyl betaine, 1-2% of EDTA-2Na and 1-2% of emulsified silicone oil, stirring, adding 5-30% of gingerol when the temperature of paste is reduced to 40 DEG C, and fully and uniformly stirring. The fresh ginger liquid shampoo contains the gingerol component, so that hairs can be cleaned, scurf can be removed, hair loss can be prevented, blood circulation of the head can be promoted, hair roots can be strengthened, and the hair roots and hairs can be protected; besides, the yield and content of an gingerol extraction method are higher than those of a common water extraction method; compared with the prior art, the fresh ginger liquid shampoo has a better scurf removing and itching relieving function, is safe, produces no side or toxic effects and can be used for a long term by consumers.

The invention relates to a polyurethane coated fabric and a preparation method thereof. The polyurethane coated fabric comprises a fabric layer and a polyurethane coating, the warps and the wefts of the fabric layer are polyester industry yarns for the polyurethane coated fabric, the polyester industry yarns for the polyurethane coated fabric are made from modified polyester, the modified polyester is composed of polyester and aminoadipic acid gylcol ester, the aminoadipic acid gylcol ester is dispersed among molecular chains of the polyester, hydrogen-bond interaction exists between the aminoadipic acid gylcol ester and the molecular chains of the polyester, and the relative position of the aminoadipic acid gylcol ester and the molecular chains of the polyester is fixed; the free volume space among the molecular chains inside the fiber is increased by 20-40v / v% when the polyester industry yarns for the polyurethane coated fabric are at 100-150 DEG C, the polyurethane coated fabric and the polyurethane have good interface bonding effect, and the polyester industry yarns for the polyurethane coated fabric can be used for improving the appearance of the fabric.

The invention relates to the field of sanitizer manufacture, in particular to a sanitizer. The sanitizer is characterized by comprising components in parts by weight as follows: 5-6 parts of glycol stearate, 6-10 parts of citric acid, 4-8 parts of sodium dodecyl sulfate, 5-6 parts of sodium carbonate, 2-5 parts of sodium aluminate, 9-11 parts of an anionic or nonionic surfactant, 6-7 parts of moxifloxacin, 6-10 parts of trichloro hydroxydiphenyl ether, 10-20 parts of lauric acid, 100-105 parts of ethanol, 0.05-0.1 parts of iodine, 5-10 parts of acetic acid and 505-605 parts of water.

The present invention relates to a polyurethane sole material raw liquid, which comprises a component A and a component B, wherein the component A comprises a foaming agent, a polyester polyol, a chain extender small molecule polyol, a flowability improvement auxiliary agent, a catalyst and a foam stabilizer, and the component B is an isocyanate-terminated prepolymer obtained by carrying out a reaction of excess diphenylmethane diisocyanate (MDI), liquefied MDI and polydiethyleneglycol adipate ethylene glycol polyol. According to the present invention, viscosity of the polyurethane sole material raw liquid during processing is reduced, flowability is increased, generation of bubbles and surface defects during preparation of the molding body with complex pattern design is reduced, and the beautiful surface effect is obtained.

The invention discloses self-adhesive paint for silicon steel sheets of a high-voltage motor iron core, and a preparation method of the self-adhesive paint, and belongs to the field of metal surface paint. The self-adhesive paint is prepared by the following steps: adding 10-40% of water-soluble acrylic resin, 1-8% of dicyanamide, 1-7% of ethelene glycol monophenyl ether, 2-14% of inorganic filling material, 1.5-3.5% of dimethylethanolamine, 0.2-0.9% of fatty acid polyglycol ester and 0.1-0.4% of alkynediols surfactant into purified water in sequence, and stirring for 5-30 min; then conducting sand grinding until the particle diameter D50 of pulp is 0.5-1.5 micrometers; stirring while adding 25-65% of water-borne epoxy resin into the ground pulp, stirring for 10-60 min, screening, discharging, adding purified water into material discharged from a screen mesh, and stirring for 10-20 min so as to obtain the self-adhesive paint.

The present invention discloses a bathing salt gypsum used for women and children, which is characterized in that the bathing salt gypsum comprises salt, surface active agents, plant extracts, perfumery, essential oil, moisture agents, pearling agent, superfatting agent, pH value regulating agent and distilled water. The surface active agents refer to negative ion type, nonionic type or amphion type; the moisture agent refers to 6501, glycerin, wool grease, macromolecule emulsified silicon oil, phenyl silicone oil, ring silicone oil; the pearling agent refers to ethyl glycol stearate; the pH value regulating agent refers to citric acid; the superfatting agent refers to polyglycerol-3-decane ester or capric acid polyglycerol-4 ester. The present invention not only has such general functions as sterilizing and stopping itch, restraining harmful bacterium growth on skin surface, but also keeps skin smooth, soft and elastic; when eliminating body dirt, meanwhile, the invention speeds up body blood circulation and purifies appreciate, which keeps the skin in a state of soft, smooth, comfortable and elastic, and is capable of curing some illness as well.

The invention discloses a nano antimicrobial polyethylene material and a preparation method thereof. The nano antimicrobial polyethylene material is prepared from the following components in parts by weight: 80-90 parts of polyethylene, 20-30 parts of polyvinyl acetate resin, 10-12 parts of hydroxypropyl methylcellulose, 5-8 parts of triethylene glycol dimethyl acrylate, 2-6 parts of sodium cocoyl glycinate, 2-4 parts of methyl isothiazolinone, 2-4 parts of trimethyl metasilicate, 1-2 parts of polyoxyethylene sorbitan, 0.5-1 part of diethyl dichlorosilane and 0.2-1.8 parts of antimicrobial agent. The invention also discloses a preparation method of the nano antimicrobial polyethylene material.

Highly foaming detergent mixtures comprising: (a) at least one fatty acid polyglycol ester sulfate of the general formula (I):wherein R1CO represents an acyl group and R1 is selected from the group consisting of linear, branched, saturated and unsaturated chains having from about 6 to about 22 carbon atoms, x is an integer having a value of from 1 to 3, each AO independently represents a CH2CH2O, CH2CH(CH3)O or CH(CH3)CH2O group, and X is selected from the group consisting of an alkali metal, an alkaline earth metal, ammonium, an alkylammonium, an alkanolammonium or a glucammonium; and (b) at least one additional surfactant selected from the group consisting of anionics, nonionics, cationics, amphoterics and zwitterionics are disclosed. The disclosed detergent mixtures exhibit advantageous foaming performance and a high level of foam stability even in the presence of hard water and / or oil.

The invention belongs to the field of cosmetics and discloses a liquid shampoo containing natural olive oil and a derivative of the natural olive oil and a preparation method for the liquid shampoo. The liquid shampoo comprises the following raw constituents: sodium polyethyleneglycol-7 (PEG-7) olive oil carboxylate, sodium 2-(2-dodecyloxyethoxy)ethyl sulphate, sodium olivoyl glutamate, olivamidopropyl betaine, glycol stearate, olive oil acylamide mono etobaccool amine (MEA), olive oil acyl hydrolyzed wheat protein, polydimethylsiloxane, PEG-7 olivate, sodium chloride, polyquaternium-10, citric acid, hydroxypropyl methyl cellulose, methylisothiazolinone, methyl chloride isothiazolinone, essence and the balance of deionized water. As the natural olive oil and the derivative thereof are adopted, the liquid shampoo disclosed by the invention is natural and mild, is low in stimulation and high in foam, can be used for a long time, not only can be used for repairing dry and damaged hair quality but also can be used for daily care and is better in smoothening and conditioning effect on the dry and damaged hair.

Low-VOC cleaning compositions effective in removing stubborn UV inks from printing-press components include at least one non-ionic surfactant selected from the group consisting of a sorbitan ester, an ethoxylated sorbitan ester, an ethoxylated castor oil, polyethylene glycol ester and an alcohol ethoxylate; and at least one carrier comprising or consisting essentially of at least one of (i) an organic solvent miscible therewith or (ii) D-limonene. The cleaning composition has a VOC limit less than 100 g / L.

The invention provides a tableware disinfectant. The tableware disinfectant is characterized by comprising the following components by weight: 2 to 8 parts of fatty alcohol polyoxyethylene ether, 0.8 to 1.6 parts of sodium benzoate, 2 to 4 parts of glycol stearate, 2 to 8 parts of citric acid, 4 to 5 parts of sodium dodecyl sulfate, 4 to 6 parts of sodium carbonate, 3 to 5 parts of sodium aluminate, 1 to 5 parts of an anionic or nonionic surfactant and 50 to 100 parts of water.

The invention relates to a method for preparing ethylene alcohol through hydrolysis of the carbonate ethylene glycol ester. It takes the glyoxaline as the catalyst, and the carbonate ethylene glycol ester hydrolysis to get ethylene alcohol under the temperature of 80 ~ 180 C degree. The catalyst and product can be separated through distillation, and the catalyst can be reused.