295 results about "Dithiophosphoric acid" patented technology

Disclosed is a method of down-regulating the expression of a gene in an animal, wherein a pharmacological formulation comprising a chimeric oligonucleotide complementary to the gene is orally administered to an animal. The oligonucleotide administered has at least one phosphorothioate internucleotide linkage and at least one alkylphosphonate, phosphorodithioate, alkylphosphonothioate, phosphoramidate, phosphoramidite, phosphate ester, carbamate, carbonate, phosphate triester, acetamidate, or carboxymethyl ester internucleotide linkage.

The invention discloses an energy-saving environment protective lubricating oil, wherein the base oil is mixed oil of synthesized grease with II category, III category and IV category selected from the API classification, the additives include detersive, ashless dispersant, antioxidant antirusting agent, auxiliary anti-oxidant, viscosity index improver, pourpoint depressant, defoaming agent, friction improver.

The invention discloses a pharmaceutical compound for treating wastewater containing complex heavy metals and/or radioactive substances and application of the pharmaceutical compound. The pharmaceutical compound comprises one of 8-hydroxyquinoline and derivatives of 8-hydroxyquinoline or a composition of any two of 8-hydroxyquinoline and the derivatives of 8-hydroxyquinoline, one of polyamine-dithiocarbamates or a composition of any two of the polyamine-dithiocarbamates, and one of dihydrocarbyl dithiophosphates or a composition of any two of the dihydrocarbyl dithiophosphates, wherein the mass fractions of the three components are respectively 1% to 90%, 1% to 90% and 1% to 98%. The pharmaceutical compound is dissolved in water and then the pharmaceutical compound solution is added into wastewater to be treated, and the amount of the pharmaceutical compound is 0.5 to 2 times larger than the theoretical amount of heavy metals and radioactive substances in the wastewater; and a metal complex is formed after sufficient stirring, and finally, the wastewater treatment can be completed by filtering separation. The pharmaceutical compound and the application of the pharmaceutical compound provided by the invention have the advantages of obvious effects, less investment, low cost, no site restriction, remote automatic control and the like.

A lubricating oil composition having a total base number of at least about 8, comprising a major amount of oil of lubricating viscosity; an amount of one or more dihydrocarbyl dithiophosphate metal salt introducing into the lubricating oil composition no more than 0.06 wt. % of phosphorus; at least 1.2 wt. % of hindered phenol antioxidant; and boron, and/or a boron-containing compound or compounds in an amount providing the lubricating oil composition with at least 200 ppm by weight of boron, all weight percentages being based on the total weight of the lubricating oil composition.

The present invention provides a process for producing copper nanoparticles, comprising steps of: a) reacting an aqueous solution containing a reductant with an aqueous solution of a copper salt while stirring for 1-8 min, wherein the reductant being one or more selected from a group consisting of hydrazine hydrate, sodium borohydride and sodium hypophosphite; b) adding an apolar organic solution containing the extracting agent and continuing the stirring for 0.5-1.5 hrs, said extracting agent being one or more selected from the group consisting of alkyl dithiocarbonic acid and salts thereof, O,O′-dialkyl dithiophosphoric acid and salts thereof, and dialkylamino dithioformic acid and salts and said apolar organic solution being one selected from the group consisting of benzene, toluene and straight or branched alkanes having 6-12 carbon atoms, wherein the alkyl having 6-20 carbon atoms; and c) post-treating the reaction product to obtain copper nanoparticles.

The invention discloses an antifriction energy-saving engine lubricating oil composed of, by weight: 50-60% of hydroisodewaxing type III base oil, 25-30% poly a olefin PAO, and 10-25% of a lubricating oil additive. The lubricating oil additive comprises: 1-2% of an antifriction agent, 2-3% of a detergent dispersant, 1.5-2% of an antioxidant and corrosion agent, 0.3- 0.7% of a depressant, 6-15% of a viscosity index improver, and 0.01% of a defoaming agent. The antifriction agent adopted in the invention is complexed by using molybdenum-dithiocarbamate and molybdenum-dithiophosphoric acid, such that the antifriction effect, wear-resistance, engine mute effect, and antifriction and oil-saving effect are significant. When the lubricating oil is used in large-scale heavy vehicles, under full load and harsh road conditions, the engine system can be better protected, service life can be prolonged, and fuel can be saved. With the lubricating oil, vehicle abrasion under high temperature and high load and abnormal increasing of vehicle fuel consumption under high temperature and high load can be solved. The lubricating oil has good friction characteristics, good mechanical stability, good thermal stability, and excellent oxidation stability.

A lubricating oil composition which comprises a lube base oil and optionally contains zinc dithiophosphate in an amount of 0.08% by mass or below in terms of phosphorus based on the total amount of the composition and which is to be brought into contact with lead-containing metal materials, containing at least one additive selected from the group consisting of the following (A) to (D): (A) an organomolybdenum compound (except molybdenum dithio- phosphate), (B) a boric ester and/or a derivative thereof, (C) an organomolybdenum compound and a boric ester and/or a derivative thereof, and (D) an organomolybdenum compound and a boric acid-modified alkyl- or alkenylsuccinimide.

According to a compressor and a refrigeration cycle device using same of the present invention, a refrigerant and refrigeration oil 103 are sealed in an container 101, the refrigerant is a hydrofluoroolefin having double bond of carbon in its composition or a mixture of hydrofluoroolefin as a base component and hydrofluorocarbon having no double bond, and at least one of benzotriazole, dialkyl dithiophosphoric acid zinc, dialkyl selenium, metal phenate, and organic nitrogen compound is included in the refrigeration oil 103, and it is an object to suppress the decomposition and polymerization of refrigeration oil and a refrigerant, and to secure reliability of the compressor and the refrigeration cycle device.

The invention aims at floatation separation of arsenic from sulfur in arsenic-containing pyrites. The floatation separation comprises the following steps of: adjusting an ore pulp to keep the pH value of the pulp between 9 and 10; adjusting the potential of the ore pulp to between 350 and 380 millivolts by adding oxidant medicaments of sodium persulfate and calcium hypochlorite; introducing air to increase oxygen content in the ore pulp; and stabilize electrochemical conditions of mineral floatation. During the floatation separation of the pyrites from the arsenopyrites, the potential of the ore pulp is stabilized by adding the oxidant medicaments of sodium persulfate and calcium hypochlorite; the arsenopyrite is suppressed by using a new collector of dianilino dithiophosphoric acid, and regulators of sodium silicate and sodium humate according to a principle of an electrochemical floatation process to make the pyrites such as arsenopyrites, iron pyrites, pyrrhotites and the like acted with a medicament selectively in the subsequent floatation process; and the floatation separation of the pyrites from the arsenopyrites is performed so as to form a sulfur concentrate with low arsenic content.

The invention discloses a flotation reagent for copper-nickel sulfide ores. The flotation reagent comprises, by weight, 35-65 parts of alkyl-dithiocarbamate, 5-25 parts of second oil, 5-10 parts of terpilenol, 15-20 parts of hydrazide-group-dithio-formic ether and 5-15 parts of dialkyl-dithiophosphate. The flotation reagent is good in selection, strong in collecting capacity and good in bubble stability, especially has a stronger collecting effect on the copper-nickel sulfide ores, can achieve separation of valuable minerals from gangue minerals such as serpentine and olivine within the pH value of 7-10, and can effectively improve concentrate grade and the recovery rate.

The invention discloses a copper gold silver ore flotation collecting agent and a flotation method, belongs to the technical field of ore flotation, and solves the prominent problems of low copper gold silver ore beneficiation efficiency, high cost and the like. The copper gold silver ore flotation collecting agent ester-205 is prepared from the following raw materials: 30 to 40 parts of N,N-diethyl dithiocarbamate, 20 to 25 parts of diisopropyl dithiophosphate, 10 to 15 parts of black powder acid, 20 to 30 parts of terpenic oil and 2 to 5 parts of ethyl alcohol. The flotation method comprises the following steps: preparation of flotation pulp, flotation preparation and copper gold silver ore flotation. According to the copper gold silver ore flotation collecting agent and the flotation method, multiple circulation times and metal loss of target metal ores in a flotation process are effectively avoided, so that the trunk flotation process is shortened, and the investment and operation cost is reduced; the collecting agent ester-205 is high in collecting capacity; the flotation speed is increased; the copper gold silver recycling rate is increased; the number of the scavenging times is reduced; and the types and the use amounts of flotation agents are reduced.

A lubricant additive composition including: a borate including an alkali metal borate, an alkaline earth metal borate, or a combination thereof; tungsten disulfide including particles having a particle diameter of 4 to 160 nanometers; an anti-scuff agent including a metal dithiocarbamate, a metal dialkyldithiocarbamate, a metal dithiophosphate, a metal dialkyldithiophosphate, or a combination thereof; a borate ester; and a base oil.

A rolling device is provided which employs a lubricating grease composition which considerably diminishes irregular friction fluctuations occurring on rolling/sliding friction surfaces, shows stable low-torque characteristics in a wide temperature range, can retain a sufficient oil film even at high temperatures, has along life, and contains a novel thickener. Also provided is an electric power steering apparatus employing the rolling device.

The rolling device is characterized by employing a lubricating grease composition comprising: a thickener which is a mixed thickener comprising a mixture of (a) one or more diurea compounds which are one or more aliphatic diurea compounds having an average molecular weight of 500-750 in which 10-70% by mole of the linear hydrocarbon groups are unsaturated components, the aliphatic diurea compounds having been produced using as a raw material one or more primary amines having a total amine value in the range of 200-400, (b) at least one fatty acid metal salt, and (c) at least one amide compound selected from the group consisting of aliphatic amides and aliphatic bisamides represented by formulae (I) and (II):

R₁CONH₂  (I)

R₁CONHR₂NHCOR₁  (II)

• • (wherein R₁ represents a saturated or unsaturated alkyl group having 15-17 carbon atoms and R₂ represents a methylene group or an ethylene group), the proportions of (a) and of (b) and (c) satisfying the relationship:

a/(b+c)=0.2−10

provided that

(1) the proportion of ingredient (a) is 1-10,

(2) the proportion of ingredient (b) is 0.5-2.5, and

(3) the proportion of ingredient (c) is 0.5-2.5,

the amount of the thickener being 2-30% by weight, based on the whole composition;

(d) a base oil which is a lube base oil having a pour point of −25° C. or lower and comprising a synthetic hydrocarbon oil as the main component; and (e) an additive which is a mixture comprising an organomolybdenum complex, an organozinc compound of a dithiocarbamic acid, and an organozinc compound of dithiophosphoric acid, the amount of the additive being 1-7% by weight, based on the whole composition.

The present invention provides a lubricating oil composition for an internal combustion engine which is very good in base number retention property, detergency at high temperature and valve train anti-wear property and does not substantially contain phosphorus- and/or sulfur-containing anti-wear agent. The composition comprises a lubricant base oil comprising a mineral oil and/or a synthetic oil, (A) 0.001 to 0.5% by mass of an ester of a boric acid in terms of boron element therein and (B) 0.01 to 5% by mass of an ashless antioxidant, wherein said composition contains substantially no metal salts of dithiophosphoric acid and has a sulfur content of 0.2% by mass or less, each percentage being based on a total mass of the composition.

The invention discloses a compound chelating agent for stabilizing soil heavy metal. The compound chelating agent is prepared by mixing the following components by weight percent: 5%-9% of dialkyldithiophosphate, 10%-18% of soluble phosphate, 10%-18% of sulfide collector and 55%-75% of deionized water. The compound chelating agent has an excellent stabilizing effect for various heavy metals in soil, especially, Pb, Hg, Cd and Cu. The stabilizing efficiency can reach up to 99% or above.

The invention discloses a lubricating grease composite used for a three-pin type constant-velocity universal joint of a vehicle transmission system. The lubricating grease comprises the following components based on 100 percent weight: (a) 78 to 83 percent of base oil, (b) 9 to 12 percent of composite lithium calcium soap thickener, (c) 0.5 to 2.0 percent of sulphide isobutene and/or an organic sulfide of dibenzyl disulfide, (d) 1.0 to 3.0 percent of zinc dialkyl dithiophosphates, (e) 0.5 to 2.5 percent of molybdenum dithio phosphate, (f) 0.5 to 3.0 percent of parathion-free nitrogen-containing boric acid ester, (g) 0.5 to 1.0 percent of amine or phenolic antioxygen, and (h) 1.0 to 2.0 percent of dinonyl naphthalene sulfonic acid barium antirusting agent. The composite has a low friction coefficient, low abrasion resistance and high extreme pressure property, can reduce or prevent noise, vibration and harshness (NVH), and is particularly suitable to be used for lubricating the three-pin type constant-velocity universal joint of a vehicle transmission shaft.

A lubricating oil composition having a sulphated ash content of less than or equal to 1.2 mass % as determined by ASTM D874 and a phosphorous content of less than or equal to 0.12 mass % as determined by ASTM D5185, which lubricating oil composition comprises or is made by admixing: an oil of lubricating viscosity, in a major amount; an oil-soluble or oil-dispersible polymeric friction modifier as an additive in an effective minor amount; and, an oil-soluble or oil-dispersible dihydrocarbyl dithiophosphate metal salt as an additive in an effective minor amount.

The invention discloses preparation and an application method for iridium complex phosphorescent materials. A series of dithio compounds such as N,N-disubstituted dithio carbamates, or O,O-disubstituted dithio phosphates and alkoxy-substituted dithio formats are subjected to dissociation of dichloro bridged complex of iridium, and iridium complexes shown as a formula (I), a formula (II) or a formula (III) are generated. The iridium complexes can be used for detecting mercuric ions and acetonitrile; and through influence of Hg2+ on physical, electrochemical and sensing properties of the iridium complexes, the iridium complex phosphorescent materials identify the Hg2+ in high selectivity, high sensitivity and quick response, the turn off phenomenon occurs, and a phosphorescent sensor for detecting the Hg2+ can be manufactured. By changing a solvent for detecting, a turn on phenomenon occurs and a novel sensor for detecting acetonitrile can be manufactured.

The present invention provides a composition containing (a) a substantially nitrogen free dispersant derived from the reaction product of: (i) a polyalkenyl-substituted acylating agent; and (ii) a polyol; (b) a primary metal hydrocarbyl dithiophosphate; (c) an oil of lubricating viscosity; and (d) optionally a viscosity modifier, wherein the composition contains about 35 ppm or less of nitrogen derived from a substantially nitrogen free dispersant. The invention further provides a process for preparing the composition and its use.

The invention discloses a novel pickling corrosion inhibitor O,O'-di-substituted dithiophosphate-N, N-diethyl ammonium. Two substituted groups are separately selected from the following substituted groups: aryl, substituted aryl and aryl substituted alkyl; and the carbon atom number of one of two substituted groups is less than 40. The invention also discloses application of the O,O'-di-substituted dithiophosphate-N, N-diethyl ammonium serving as a metal pickling corrosion inhibitor. The O,O'-di-substituted dithiophosphate-N, N-diethyl ammonium is added into a pickling medium with different concentration to make the concentration be between 40 and 160 mg/L so as to achieve the effective metal corrosion inhibiting effect; and the pickling corrosion inhibitor disclosed by the invention has long lasting effect and wide applicable acidity range.