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1293 results about "Sebacic acid" patented technology

Sebacic acid is a naturally occurring dicarboxylic acid with the structure (HOOC)(CH₂)₈(COOH). In its pure state, it is a white flake or powdered crystal. The product is described as non-hazardous, though in its powdered form it can be prone to flash ignition (a typical risk in handling fine organic powders).

Engine antifreezing solution

ActiveCN101691484AAvoid the disadvantages of instabilityWith boiling suppressionHeat-exchange elementsCooperative interactionSebacic acid
The invention relates to an engine antifreezing solution which is prepared by mixing the following components to react: glycol, sodium molybdate, sodium hydroxide, isooctanoic acid, sebacic acid, sodium benzoate, benzotriazole, sodium 2-mercaptobenzothiazole, dye and deionized water. The invention adopts a new formula which uses organic matter as main component and inorganic matter as auxiliary component to reach the aim of controlled release on the basis of conventional inorganic and all-organic engine antifreezing solution technologies, wherein the organic acid uses the combination of monoacid and binary acid. The invention does not contain sodium borate and silicate so as to avoid the defect that precipitate is easy to generate due to the existence of sodium borate and silicate in glycol series antifreezing solution and the antifreezing solution is unstable; and the engine antifreezing solution of the invention does not contain amine, nitrate, phosphate and other substances which are harmful to the environment and human body. The researched antifreezing solution has good performances of stability, freeze-proofing, boil-proofing, corrosion-proofing and scale prevention through the cooperative interaction of components so as to perform multi-level anticorrosion protection for the cooling system of the vehicle.
Owner:SHAANXI DADI IND CO LTD OF CHINA NAT NUCLEAR

Treatment method of phenol-containing liquid waste in sebacic acid production

The invention discloses a treatment method of phenol-containing liquid waste in sebacic acid production, specifically comprising the steps of extraction, back extraction, evaporation, regulation, anoxic biochemical reaction and aerobic biochemical reaction, and the like. The phenol-containing liquid waste is filtered to remove the insoluble substance, the phenol substance in the liquid waste is extracted by a specially selected extracting agent, the extract phase is back extracted by alkaline liquor and is regenerated to be recycled, and the back extraction solution is returned to a sebacic acid production system. The raffinate is transferred into an evaporation system to be evaporated and separated to obtain a sodium sulfate by-product, the evaporation condensed water is homogenized and equalized after being cooled, the pH value is regulated, and the evaporation condensed water is performed with anoxic biochemical reaction by acclimated and cultured microorganisms in a biochemical reaction system in the presence of nutrient elements. The method provided by the invention is a method combining materialization and biochemical reaction, and the method has the advantages of reasonabledesign and strong maneuverability; furthermore, the treated liquid waste can satisfy the discharge standard to be discharged or recycled.
Owner:BLUESTAR LEHIGH ENG INST CO LTD

Life-cycle water-free cooling solution

The invention relates to a life-cycle water-free cooling solution which is characterized by comprising the following components in percent by weight: 10-50 percent of propylene glycol, 50-80 percent of ethylene glycol, 0.1-10 percent of triazole compounds, 0.5-3.0 percent of sebacic acid, 0.2-1.0 percent of adipic acid, 0.5-1.5 percent of sodium benzoate, 0.3-5 percent of inorganic base, 0.01-0.1 percent of antifoaming agent and 0.01-0.1 percent of colouring agent. The cooling solution has a freezing point of below -50 DEG C and a boiling point of 166-191 DEG C; and because the cooling solution does not contain water, problems of boiling, gas etching, evaporating, scaling, rusting and the like caused by water existing in the cooling solution are thoroughly eliminated, a steam air resistance layer seriously influencing heat radiation is avoided from generating, power of an engine can be effectively improved and fuel is saved. Because the cooling solution does not contain water and has a reasonable corrosion inhibition system, the problem of corrosion is thoroughly solved; and the cooling solution has a service life of reaching up to 8 hundred thousand kilometers, is added once without replacement, is a life-cycle cooling solution, is especially suitable for military vehicles, high-end vehicles and high-power heavy-loading trucks and passenger cars, and can ensure that the vehicles safely run under extremely hot weather, severe cold weather, and severe environments such as desert, plateau, snowfield and the like.
Owner:JIANGXI CHEPU IND CO LTD

No-cleaning leadless solder and preparation method thereof

The invention relates to a no-clean lead-free tin welding wire and a preparation method thereof, wherein the lead-free welding wire is composed of 2 to 3 percent of flux and 97 to 98 percent of lead-free solder. The lead-free solder is composed of 0.5 to 0.7 percent of Cu, 0.03 to 0.05 percent of Ni, 0.01 to 0.02 percent of P, 0.005 to 0.01 percent of Ga and the remnant amount of Sn. The No-clean flux is composed of 1.0 to 4.0 percent of organic acid active agent, 0.5 to 5.0 percent of halogenated derivative active solvent, 2.0 to 5.0 percent of heat-resistant resin , 1.0 to 4.0 percent of cosolvent, 2.0 to 5.0 percent of high boiling point solvent and the remnant amount of modified rosin. The cosolvent belongs to ester compound and the high boiling point solvent is the mixed solvent of one or more of the SAF-25, dioctyl sebacate, benzyl benzoate, dioctyl adipate. In the preparation of the welding wire, the key point is first to form the alloys of Sn with other metals, and then the alloys can be added to the tin for melting. The lead-free welding wire of the invention has good heat resistance without halogen, low flux spattering, low odor, non-corrosive flux residue, strong practical feature, good electrical insulation after being welded, crack-free flux residue and high reliability.
Owner:太仓市首创锡业有限公司

Water soluble anti-rust agent

The invention relates to a water soluble anti-rust agent on the surface of ferrous metal, which comprises the following components: 2 to 10 weight percent of barium petroleum sulfonate and/or barium dinonyl decyl sulfonate, 1 to 6 weight percent of sodium molybdate and/or amine molybdate, 0 to 10 weight percent of sebacic acid, 2 to 10 weight percent of polyacrylic ester, 3 to 20 weight percent of triethanolamine oleic soap and/or 2 to 6 weight percent of polyoxyethylenesorbitan monooleate, 0 to 15 weight percent of sodium alkylsulfonate, 0 to 8 weight percent of glycerin and the balance of water or machine oil. Compared with the conventional water soluble anti-rust agent, the water soluble anti-rust agent of the invention has the advantages of short film forming time, firm film forming adsorption and good anti-rust effect; the actual anti-rust period can reach 3 to 6 months; the formed film is thin and only 3 to 5 microns; common workpieces do not need film removal and can be directly assembled and coated; the film removal is convenient, and the film is only soaked and rinsed in mild water over 50DEG C and then can be removed quickly; and the anti-rust agent has no component containing toxic and harmful substances, does not contain phosphorus, has the advantages of good environmental protection and no pollution to the environment, and is the environment-friendly water soluble anti-rust agent.
Owner:无锡市弘育化工有限公司

Anticancer sustained release agent containing epothilone

Disclosed is an anti-cancer drugs slow release agent containing Epothilone which comprises slow release microspheres and dissolvent, wherein the slow release microballoons comprise anti-cancer active constituents and slow release auxiliary materials, the dissolvent being specific dissolvent containing suspension adjuvant. The anticancer active constituents include Epothilone, Epothilone derivatives, Epothilone B, Epothilone D and combination of anti-cancer drugs selected from phosphoinositide-3-kinase inhibitor, of pyrimidine analogues and/or DNA restoring enzyme inhibitor, the slow release auxiliary materials include polylactic acid and its copolymer, polyethylene glycol, PLA-COOH copolymer, di-aliphatic acid and sebacylic acid copolymer, poly(erucic aciddipolymer-sebacylic acid), poly(fumaric acid-sebacylic acid), Polifeprosan, polylactic acid and other biocompatible high polymers, the viscosity of the suspension adjuvant is 100-3000cp (at 20-30 deg C), and is selected from sodium carboxymethylcellulose. The anticancer active constituents and the slow release microspheres can also be prepared into slow release implanting agent for intra-tumor or around-tumor injection or placement for the effective suppression of tumor growth and for the appreciable enhancement for curative effects of non-operative treatments such as chemotherapy.
Owner:JINAN SHUAIHUA PHARMA TECH

Polyester resin for epoxy-cured powder coating with high glossiness and high leveling property and preparation method thereof

ActiveCN103642014AControl surface tensionControl Melt ViscosityPowdery paintsEpoxy resin coatingsEpoxy1,3-Propanediol
The invention relates to a polyester resin for an epoxy-cured powder coating with high glossiness and high leveling property and a preparation method thereof. The polyester resin has relatively high glass-transition temperature. The technical scheme is as follows: the polyester resin for the epoxy-cured powder coating with high glossiness and high leveling property orderly comprises the following components: neopentyl glycol, 2-methylpropanediol, diglycol, 2-butyl-2-ethyl-1, 3-propylene glycol, terephthalic acid, isophthalic acid, sebacic acid and trimellitic anhydride. The preparation method of the polyester resin for the epoxy-cured powder coating with high glossiness and high leveling property comprises the following steps: 1) adding a proportioning amount of polyhydric alcohol to a reaction kettle, heating at normal temperature, and then feeding a proportioning amount of polyatomic acid and esterification catalyst; 2) carrying out thermal reaction until the water yield of the esterified water can be up to 95% or more of theoretical water yield; 3) adding trimellitic anhydride and isophthalic acid, and carrying out thermal reaction; 4) gradually vacuumizing, and reacting; 5) discharging.
Owner:ZHEJIANG CHUANHUA TIANSONG NEW MATERIAL CO LTD

Working electrolyte for wide temperature high voltage aluminium electrolytic capacitor and method for making same thereof

The invention discloses working electrolyte for the aluminum electrolytic capacitor with wide working temperature range and high voltage and the manufacturing method. The invention includes the following materials (calculating with weight percent): 60 percent to 80 percent glycol, 5 percent to 20 percent Gamma butyrolactone, 0 percent to 5 percent water, 2 percent to 5 percent ammonium sebacate, 5 percent to 10 percent isosebacic acid ammonium, 0 percent to 5 percent sebacic acid, 0.1 percent to 2 percent ammonium dihydrogen phosphate, 0.1 percent to 1 percent citric acid, 0.1 percent to 2 percent p-nitrobenzoic acid and 5 percent to 20 percent polyethylene glycol. The manufacturing method is as follows: (1) well-mixing the glycol, Gamma butyrolactone and water and heating to 60 DEG C through 90 DEG C; (2) adding the ammonium sebacate, sebacic acid, ammonium dihydrogen phosphate, citric acid, p-nitrobenzoic acid, polyethylene glycol to the mixed solvent and well-mixing; (3) after ample dissolution of the materials, keeping the temperature in the step (3) for five through thirty minutes; (4) adding the isosebacic acid ammonium to the mixture and keeping the temperature in the step (3) for five through thirty minutes, and stopping heating and natural cooling in the air, and obtaining the aluminum electrolytic capacitor with wide working temperature range and high voltage. The product increases the conductivity and the sparking voltage of the working electrolyte and reduces the production cost.
Owner:GUANGXI NORMAL UNIV

Lubricating grease for hub bearing of heavy load truck and preparation method thereof

InactiveCN103450978AEliminates tendency to overflowSlow dehydration stepThickenersThiocarbamateChemical industry
The invention relates to a lubricating grease and a preparation method thereof, particularly relates to a lubricating grease for a hub bearing of a heavy load truck and a preparation method thereof, and belongs to the technical field of a chemical industry. The lubricating grease is prepared from the following raw materials: (A) base oil which accounts for 60-85% of total weight of the lubricating grease, (B) a thickening agent, which is C12-C22 unitary organic acid which accounts for 7-12% of total weight of the lubricating grease, 0.5-3% of sebacic acid, 0.2-1% of boric acid, and 3-5% of lithium hydroxide oil solution, (C) an additive, which is thiocarbamate which accounts for 0.5-3% of total weight of the lubricating grease, 2-5% of sulfide olefin cottonseed oil, 2-4% of dialkyl dithiocarbamate salt, 0.5-2.5% of molybdenum dialkyl dithiophosphate, 0.3-2% of antirust agent and 0.3-1% of antioxidant. The lubricating grease has the beneficial effects that the production time is shortened; the lubricating grease is more controllable in process, stable in product quality, less in seepage loss of a high-temperature bearing, and prominent in extreme pressure property; lubricating protection can be better provided for hubs of the heavy load truck; the lubricating requirements of the hub bearing of the heavy load truck under various working conditions can be met; the grease exchange period of the hub bearing is prolonged.
Owner:JIANGSU LOPALTECH
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