223 results about "Hexanedioic Acids" patented technology

The invention relates to a universal refrigerant resistant solvent-free impregnating resin for a high and low voltage motor and a preparation method thereof. The impregnating resin is composed of 45-65 parts of unsaturated polyesterimide resin solution with 65-75% of solid content, 15-35 parts of oxazolidone resin solution with 75-85% of solid content, 10-25 parts of environment-friendly dilutingagent, 3-8 parts of curing agent, 1-3 parts of initiating agent and 0.01-0.06 part of polymerization inhibitor; the raw material formula of an unsaturated polyesterimide resin comprises a first monomer, a second monomer and a third monomer, wherein the first monomer is selected from one or multiple of neopentyl glycol, propoxylation bisphenol A and trihydroxyethyl isocyanurate; the second monomeris selected from one or multiple of isophthalic acid, hexanedioic acid, trimellitie anhydride and maleic anhydride; and the third monomer is a compound containing imide groups. The resin provided by the invention has low content of VOC (Volatile Organic Compounds), resists novel refrigerating fluids such as R134a and is universal for the high and low voltage motor.

The invention discloses a rear cross-linking heatproof emulsion pressure-sensitive adhesive and a method for producing the same. The rear cross-linking heatproof emulsion pressure-sensitive adhesive contains the following components in parts by weight: 100 parts of hard and soft monomer, 0-4 parts of functional monomer, 0.01-2 parts of rear cross-linking monomer, 0.5-3 parts of emulsifying agent, 0.1-2 parts of initiating agent, 0.025 part of buffering agent and 0.01-2 parts of hexanedioic acid, wherein the hard and soft monomer is prepared from a soft monomer and a hard monomer according to the mass ratio of (65-100):(0-35). According to the method, diacetone acrylamide is firstly adopted as the rear cross-linking monomer to pre-emulsify the whole monomers, then, a batch-fed method is adopted to prepare copolymer emulsion, and finally, the hexanedioic acid is added into the copolymer emulsion so as to obtain rear cross-linking emulsion. The pressure-sensitive adhesive which is prepared by coating the rear cross-linking emulsion can simultaneously have good initial adhesion, permanent adhesion and 180-degree peeling strength as well as good temperature resistance; and moreover, the method for producing is simple, convenient to operate and easy to control.

The invention relates to the technical field of polymer materials, and especially relates to high molecular weight aliphatic-aromatic copolyester and a preparation method thereof. The preparation method of high molecular weight aliphatic-aromatic copolyester comprises following steps: (1) adding aromatic monomers, 1,4-butanediol, hexanedioic acid, and a catalyst into an intermittent reactor, carrying out esterification reactions under the protection of inert gas, and carrying out condensation polymerization reactions after the esterification reactions are over so as to obtain a PBAT prepolymer; (2) subjecting the obtained PBAT prepolymer to a chain propagation treatment with a double screw extruder when adopting a chain extender so as to obtain a PBAT copolyester with a number-average molecular weight Mn of 10000 to 100000. Compared to the prior art, the preparation method of PBAT copolyester is capable of simplifying the production technology, and has the advantages of controllable operation, realization of continuous production, and reduction on production cost.

The invention discloses a method for preparing hexanedioic acid. The method comprises a step of converting furan-2,5-dicarboxylic acid or tetrahydrofuran-2,5-dicarboxylic acid into hexanedioic acid in water through a chemical catalysis method, wherein the step is specifically selected from any one of the following steps (1)-(3): (1) enabling tetrahydrofuran-2,5-dicarboxylic acid to react with hydrogen under catalysis of a hydrodeoxygenation catalyst to obtain hexanedioic acid; (2) enabling furan-2,5-dicarboxylic acid to react with hydrogen under catalysis of a hydrogenation catalyst and a hydrodeoxygenation catalyst to obtain hexanedioic acid; and (3) carrying out the substeps of (1) enabling furan-2,5-dicarboxylic acid to react with hydrogen under catalysis of a hydrogenation catalyst to obtain tetrahydrofuran-2,5-dicarboxylic acid and (2) enabling tetrahydrofuran-2,5-dicarboxylic acid to react with hydrogen under catalysis of the hydrodeoxygenation catalyst to obtain hexanedioic acid. According to the method, water is used as a solvent; other impurity elements are not introduced except for the used heterogeneous catalyst, so that the production cost is further reduced; meanwhile, the method is more environmentally friendly.

The invention discloses a biodegradable material poly(hexanedioic acid -para-phthalic acid-butanediol ester) (PBAT) foaming particles preparation method which is characterized in that the preparation method comprises the following steps: placing PBAT particles in an airtight container of which the temperature is 120-142 DEG C and the volume is 25 times or more than 25 times of the total volume of the particles, injecting 8-20MPa of pressure gas in the container, keeping the temperature and the pressure for 5-30min, and then relieving the pressure in a speed of 5-20MPa/s to the normal pressure to obtain the PBAT foaming particles. The cell diameter of the PBAT foaming particles is 10-260mu m and the density is 0.13-0.35g/cm<3>. The invention has simple process, easy operation, short production cycle and low cost, thus being applicable to the industrialized production.

Disclosed is a 700V high-voltage aluminum electrolytic capacitor electrolyte. The electrolyte comprises 50-80% of main solvent, 20-50% of auxiliary solvent, 5-20% of main solute, 2-10% of auxiliary solute, 0.1-1% of auxiliary additive and 5-15% of spark additive, wherein the main solute comprises one or more of azelaic acid, ammonium hydrogen azelate, ammonium sebacate, decane dicarboxylic acid, 7, 9-dimethyl-7, 9-dimethoxy carbonyl-1, 11-dodecane dicarboxylic acid, and 7, 8-dimethyl-7, 8-dimethoxy carbonyl-1, 14 tetradecane dicarboxylic acid; and the auxiliary solvent comprises one or more of ammonium salicylate, salicylic acid, oxalic acid, malonic acid, succinic acid, ammonium benzoate, ammonium maleate, ammonium hydrogen maleate, ammonium adipate and hexanedioic acid. The spark voltage of the electrolyte is greater than 700V; and in addition, the electrolyte is simple to prepare, stable in performance and excellent in related parameters.

The invention relates to a high molecular compound, in particular to a low-volatization unsaturated polyester resin for manufacturing a large glass steel structural layer. The unsaturated polyester resin is prepared by dissolving a reaction product of a condensation reaction of propylene glycol, ethylene glycol, hexanedioic acid, phthalic anhydride and cis-butenedioic anhydride into styrene after the condensation reaction is completed. N20 type aerosol, M30 exothermic peak inhibitor and 0.02 portion of B20 surface active agent are added to the unsaturated polyester resin, and thixotropic index and viscidity required by provision can be achieved by high-speed and uniform dispersing through a stirring mill. The invention has the advantages of being suitable for hand pasting and injection molding process, having the characteristics of sagging resistance, high water resisting property, low exothermic peak and low volatilization of the styrene, being suitable for large thickness workpiece glass steel products of fan cover, glass steel boat, and the like, and having high intensity of the products, good weather resisting property and good water resisting property.

The invention relates to an electrolyte for an aluminum electrolytic capacitor. The electrolyte for the aluminum electrolytic capacitor is prepared from 10%-15% of a main electrolyte, 5%-10% of an auxiliary electrolyte, 65%-73% of a solvent, 10%-20% of a sparking voltage increasing agent, 0.1%-1% of a waterproof mixture and 0.1%-1% of a hydrogen eliminating agent, wherein 2,5-dimethyl hexanedioic acid serves as the main electrolyte, benzoic acid serves as the auxiliary electrolyte, and ethylene glycol serves as the solvent. The electrolyte for the aluminum electrolytic capacitor has the advantages that due to the fact that the 2,5-dimethyl hexanedioic acid serves as the main electrolyte, the solubility and the thermostability of the 2,5-dimethyl hexanedioic acid are better in the ethylene glycol, and medium-pressure or high-pressure aluminum electrolytic capacitors containing the electrolyte has the advantages of being long in service life and good in low-temperature performance.

The invention relates to biodegradable copolyester and a preparation method thereof. The preparation method comprises the following steps of: undergoing an esterification reaction on pure terephthalic acid, hexanedioic acid, 1,4-butylene glycol and ethylene glycol under normal pressure at the temperature of between 150 DEG C and 220 DEG C, wherein the molar ratio of the pure terephthalic acid to the hexanedioic acid is (3:7)-(8:2), the molar ratio of the ethylene glycol to the 1,4-butylene glycol is (1:9)-(9:1), and the ratio of the total mole number of the pure terephthalic acid and the hexanedioic acid to the total mole number of the ethylene glycol and the 1,4-butylene glycol is 1:(1.0-1.8); and undergoing condensation polymerization under the pressure of between 10 Pa and 150 Pa to obtain the copolyester, wherein the dosage of a titanium compound is 200-1,200 ppm relative to the total weight of terephthalic acid and the hexanedioic acid, the dosage of an antimony compound is 100-600 ppm relative to the total weight of the terephthalic acid and the hexanedioic acid, and the dosage of a phosphorous compound is 50-400 ppm relative to the total weight of the terephthalic acid and the hexanedioic acid. The biodegradable copolyester has the advantages of low raw material price, reaction at low temperature and under low pressure and high inherent viscosity.

The invention discloses a self-lubricating material for a filter sealing piece and a preparation method thereof, belonging to the fields of sealing rubber materials and preparation methods thereof. The self-lubricating material consists of the following components in percentage by weight: 40-45 percent of nitrile rubber, 20-25 percent of high-wear-resistance carbon black, 10-15 percent of semi-reinforced carbon black, 3.0-5.0 percent of zinc oxide, 0.5-1.0 percent of stearic acid, 1.0-1.5 percent of 4,4'-di(phenyl isopropyl)diphenylamine, 0.5-1.0 percent of 1,3-dihydro-4(or 5)-methyl-2H-benzimidazole-2-thione zinc salt, 0.1-0.3 percent of sulfur, 1.0-2.0 percent of accelerant DTDM (Dithiodimorpholine), 0.5-1.0 percent of accelerant CZ, 3.0-6.0 percent of hexanedioic acid di[2-(2-butoxy oxethyl)ethyl ester] and 1.0-1.5 percent of fluorine wax FU-305. The method comprises the following preparation steps of: compounding a master batch; performing two-stage vulcanization on the master batch; and vulcanizing. A layer of uniform, transparent and bright film with high adhesion is formed when the fluorine wax FU-305 is transferred onto the surface of a rubber product, so that the frictioncoefficient of the surface of the rubber sealing piece is reduced, bonding between the rubber piece and a metal body is prevented effectively, and the ozone aging resistance is enhanced effectively.

The invention discloses a modified nylon powder coating and a preparation method thereof. The preparation method comprises the following steps of: firstly preparing a polymerization product by performing polymerization reaction on the following main synthetic materials in parts by mass: 50 to 80 parts of caprolactam or nylon 6 resin, 20 to 50 parts of nylon 66 salt, nylon 66 resin or equal mole ratio of hexamethylene diamine and hexanedioic acid, and 0.02 to 1.7 parts of an auxiliary agent; and then preparing the modified nylon powder coating through the processes of extrusion modification, deep cooling crushing and treatment with a powder surface treatment agent. The auxiliary agent comprises an antioxidant, a nucleating agent and a molecular weight adjusting agent. The modified nylon powder coating prepared by the method is lower in melting point, simple in process control and stable in product quality, can partially substitute nylon 11 and nylon 12 powder products, can effectively reduce the using cost of nylon powder, is favorable for application popularization of the nylon powder, and has a great market potential.

The present invention discloses a PVC outer lubricant, which includes the following ingredients with the following mass percentages: 40 percent to 70 percent of stearic acid; 10 percent to 30 percent of pentaerythritol ester; 5 percent to 40 percent of fumaric acid. The PVC outer lubricant adopts the fumaric acid to replace the original hexanedioic acid, and the fumaric acid is the regurgitated acid obtained by recovering and processing waste liquid produced by other chemical industries. The recycling of the waste liquid not only can pretect environment but also can reduce cost. With the advantages of nontoxic fumaric acid, good lubricating property, good free flowing property, good inadhesion and little precipitation, the PVC outer lubricant greatly decreases the frequency of halting a machine to insert rollers in the process of production, thus reducing the labor intensity of operators, increasing production efficiency and ensuring good demoulding effect, and therefore the economic benefit of products is increased. The PVC outer lubricant can improve the strength and the cold-resisting property of PVC products to a certain degree. The PVC outer lubricant is widely applicable to PVC sheets, transparent sheets, color sheets, ground sheets, films, pelleting and sectional material processing, etc.

The invention discloses antibacterial high-filled degradable plastic. The antibacterial high-filled degradable plastic is prepared from, by weight, 25-80 parts of biodegradable materials, 30-75 parts of filling powder, 2-10 parts of auxiliaries and 3-5 parts of nano antibacterial agents, wherein the nano antibacterial agents adopt ZnO-Ag nanocomposite antibacterial agents. The plant degradable materials comprise any one of poly(butylene succinate), polybutylene hexanedioic acid terephthalate and polylactic acid; the filling powder comprises any one of wood powder, modified starch, modified calcium carbonate, modified talcum power, modified pulverized fuel ash, montmorillonoid and kaolin. The antibacterial high-filled degradable plastic is easy to degrade, good in plasticity, capable of resisting bacteria and preventing corrosion and suitable for being applied to production and manufacture of various plastic products.

The invention discloses a method for synthesizing cyclohexanone-oxime from cyclohexane in one step, relating to the field of chemical synthesis. The method comprises the following steps of: adding a titanium-silicate molecular sieve TS-1 used as a catalyst into a synthesis reactor at normal pressure with cyclohexane, H2O2 and ammonia water as raw materials, wherein 0.2g of the catalyst titanium-silicate molecular sieve TS-1is added in 1 mmol of cyclohexane; and controlling the reaction temperature at 25-80 DEG C and the reaction time for 1-30h to synthesize cyclohexanone-oxime in one step, wherein the molar ratio of cyclohexane to H2O2 to ammonia water is 1:1.5-3.5:1.5-2. The method has simple process conditions and mild reaction conditions. Byproducts generated in the reaction process are KA oil and hexanedioic acid which have higher application value, and can greatly improve the utilization rate of resources. The whole process is basically free of environmental pollution and truly realizes zero emission.

The invention discloses a poly glucosamine hexanedioic acid vinyl ester material for reducing the content of phenol type substances. The composite material is the material which takes a porous material as a carrier and alternately loads polyanions and hydrophilic polycations on the porous material in the way of carrying out self-assembly layer upon layer, and the hydrophilic polycations are loaded on the outmost layer of the porous material, wherein the hydrophilic polycations are poly glucosamine hexanedioic acid vinyl ester hydrochloride. The composite material can be used for preparing cigarette filters and can be prepared into the binary compound cigarette filters or the three-section compound cigarette filters. The poly glucosamine hexanedioic acid vinyl ester material can reduce the phenol type harmful substances in cigarette smoke by utilizing the water selectivity in the composite material; simultaneously, as a large number of flavor organic compounds can not be dissolved in water, the poly glucosamine hexanedioic acid vinyl ester material can avoid the loss of flavor components and keep the inherent quality of cigarettes.

The invention provides a catalyst for preparation of 1,6-hexanediol by hydrogenating 1,6-hexanedioic acid dialkyl ester and a preparation method and application thereof. The catalyst comprises, by weight, 5%-30% of Cu, 2-10% of Ni, 5%-20% of B, 0%-5% of metallic addition and the balance being a porous carrier. Since the catalyst is applied to reaction for preparation of hexanediol by hydrogenating 1,6-hexanedioic acid dialkyl ester, pressure during reaction can be reduced effectively, the liquid hourly space velocity is increased and H2-to-ester ratio is lowered.

The invention discloses instant crease resistant peptide eye cream, which is mainly prepared from rice bran oil, niacinamide, macadimia nut oil, euglena gracilis polysaccharide, cetostearyl alcohol, cetearyl glucoside, purslane flower/leaf/stem extracts, glycyrrhiza glabra leaf extracts, glycine betaine, polydimethylsiloxane, hexanedioic acid/neopentyl glycol/trimellitic anhydride copolymers, VP/VA copolymers, amodimethicone, palmitoyl pentapeptide-4, tripeptide-1, hydrolyzed collagen and the like. The VP/VA copolymers and theeuglena gracilis polysaccharide in the eye cream can form a breathable thin film at the periphery of the eye skin; the eye crease region is filled; the black eye is faded; the eye dropsy condition is relieved; palmitoyl pentapeptide-4 and tripeptide-1 can stimulate regeneration of the collagen and the albumen; the crease generation is retarded; the eye thin veins are relieved; the glycine betaine can promote palmitoyl pentapeptide-4 and tripeptide-1 to directly reach the corium layer for stimulating the regeneration of collagen and elastin; the normal metabolic process of cells is not influenced; the instant crease removal effect is high; safety and no stimulation are realized.

The invention discloses a polyvinyl chloride (PVC) synthetic leather for sports shoes. The polyvinyl chloride synthetic leather comprises a surface layer, a foaming layer, an adhering layer, and a brushing fabric, and is characterized in that the surface layer is prepared from the following raw materials in parts by weight: 40-50 parts of SG-1 type PVC resin, 70-80 parts of SG-6 type PVC resin, 30-35 parts of hexanedioic acid propylene glycol polyester, 25-30 parts of n-butyl methacrylate, 15-20 parts of sebacic acid propylene glycol polyester, 5-6 parts of PVC color paste, 1-2 parts of bis(isooctyl thioglycolate) dioctyldllauryltin, 1-2 parts of calcium stearate, 1-2 parts of dimethyl bis(isooctyl thioglycolate) and 5-10 parts of modified attapulgite. The PVC synthetic leather is increased in flexibility through the improvement of a formula and a process, has a natural comfortable hand feel similar to a natural leather, is not easily broken or torn and damaged after 3-5 years, and is suitable for being used as a fabric of the sports shoes.

The invention relates to a method for preparing hexanedioic acid from cyclohexane oxidation byproducts. The method comprises the following steps: 1, hydrolyzing raw materials light oil byproducts of a cyclohexane oxidation reaction by adding water to them to make epoxycyclohexane in the light oil byproducts hydrolyze to form 1,2-cyclohexanediol; 2, carrying out primary separation to obtain crude 1,2-cyclohexanediol; 3, adding water to form an aqueous 1,2-cyclohexanediol solution; and 4, adding a catalyst and an oxidant to carry out an oxidation reaction to oxidize 1,2-cyclohexanediol in the aqueous solution into hexanedioic acid. The method which uses the cyclohexane oxidation byproducts as the raw materials can obtain hexanedioic acid in a high recovery rate within a short reaction time.

The invention provides preparation methods and applications for diaminebenzoxazole and a copolyamide electrolyte of the diaminebenzoxazole. The invention relates to synthetic methods for a novel diaminebenzoxazole compound and copolyamide of the novel diaminebenzoxazole compound. The invention is to solve the problem of low mechanical property and electrical conductivity of a conventional PEO polymer electrolyte. According to the invention, 2,2'-butylidenedi[5-amidobenzoxazole] is prepared with 2,4-diaminophenol hydrochloride and hexanedioic acid as raw materials and polyphosphoric acid as a solvent; the 2,2'-butylidenedi[5-amidobenzoxazole] respectively reacts with polyethyleneglycol dicarboxylic acid, and sulfonic lithium (sodium)-contained dicarboxylic acid or sulfonic lithium (sodium)-contained diamine so as to prepare a copolyamide I and a copolyamide II; meanwhile, the copolyamide is applied as an electrolyte of a solid lithium-ion battery. According to the invention, by introducing 2,2'-butylidenedi[5-amidobenzoxazole] into a polyamide structure, electrical conductivity and mechanical property of a polymer thin film are improved.

The invention provides modified poly (propylene carbonate), which comprises a cross-linked poly (propylene carbonate) with polyphenyl polymethylene polyisocyanates as a cross-linking agent, as well as a polymer of hexanedioic acid and 1,2-propylene glycol ester, wherein the mass ratio of poly (propylene carbonate) to the polyphenyl polymethylene polyisocyanates is 100:(0.1-2), and the mass ratio of the cross-linked poly (propylene carbonate) to the polymer of hexanedioic acid and 1,2-propylene glycol ester is 100:(5-20). A preparation method of the modified poly (propylene carbonate) comprises the following steps: blending and extruding the poly (propylene carbonate) and the polyphenyl polymethylene polyisocyanates to obtain the cross-linked poly (propylene carbonate); and blending and extruding the cross-linked poly (propylene carbonate) and the polymer of hexanedioic acid and 1,2-propylene glycol ester to obtain the modified poly (propylene carbonate). The modified poly (propylene carbonate) provided by the invention is good in thermal stability, high in tensile elongation at break, good in transparency and capable of being biodegraded completely.

The invention discloses light alkyd resin for interior decoration and furniture coating, which is formed by the following raw materials: glycerol, palmitoleic acid, benzoic acid, hexanedioic acid, neopentyl glycol, phthalic anhydride, tetramethylolmethane and dimethylbenzene; the preparation method comprises the following steps: a. the palmitoleic acid, the benzoic acid, the hexanedioic acid, the glycerin, the neopentyl glycol, the phthalic anhydride, the tetramethylolmethane and the dimethylbenzene are thrown in a reactor one time, are heated and are stirred; b. carbon dioxide gas flows in the reactor to protect temperature rise, when the temperature is raised to 130-180 DEG C and kept for 1-3 hours, at the moment, the dimethylbenzene flows back, and then the temperature is raised to 200 plus/minus 5 DEG C at the temperature raising speed with 8-12 DEG C per hour, and then the temperature is kept for 4-8 hours; c. a sample is taken out in the step b for measuring viscosity, when the viscosity reaches desired value, the temperature is cooled to 130-180 DEG C, so as to obtain the modified alkyd resin; d. the alkyd resin in the step c is transferred to another reactor, and then 2.5-8.5 percent of dimethylbenzene is added, the mixture is mixed uniformly to obtain the water-white alkyd resin liquid.

The invention discloses a preparation method of a binding agent applied to an environment-friendly aluminum structure composite material and belongs to the field of binding agent preparation.The method comprises the following steps: esterifying dimethyl terephthalate, ethylene glycol, hexanedioic acid, 1,4 butanediol under certain conditions, then carrying out condensation polymerization on the raw materials to obtain polyester polyol; mixing the obtained polyester polyol with polyether glycol, then formulating the mixture by inorganic filler, tackified resin and organosilicon coupling agent according to proportion, thus obtaining an environment-friendly aluminum structure composite material compound binding agent.In the preparation method, through the design of the structure of polyesterchain segment, introduction of polyether glycol chain segment unit and adjustment of proportioning of different inorganic fillers, the prepared binding agent is endowed with extremely high aluminum base material strength and fine operability; in addition, with the binding agent adopted, various compound materials containing aluminum base materials can be produced.The aluminum honeycomb compound product made from the binding agent of the invention features high mechanical property, no discharge of toxic and irritant gas and excellent weather resistance.