562results about How to "Improve low temperature fluidity" patented technology

The invention relates to a process for producing a new type of high-quality hydrocarbon base oil of biological origin. The process of the invention comprises ketonisation, hydrodeoxygenation, and isomerization steps. Fatty acids and/or fatty acid esters based on a biological raw material are preferably used as the feedstock.

The invention relates to an agricultural chemical missible oil preparation with biological diesel oil dissolvent, the ingredient comprises agricultural chemical original raw pesticide, dissolvent, and emulsifying agent, wherein the dissolvent is biological diesel oil or is mixed dissolvent which is mixed by biological diesel oil and conventional agricultural chemical in any proportion. The invention uses biological diesel oil as dissolvent to replace or partially replace conventional dissolvent in the prior art, which has the advantages of high efficiency, safety, environmental protection, and low toxicity, and can reduce the cost of agricultural chemical.

Lubricant compositions comprising certain mixtures of esters of pentaerythritol, di-pentaerythritol, tri-pentaerythritol and higher pentaerythritol oligomers are ideally suited for use with CO₂ as refrigerant in heat transfer devices provided that at least 30% by weight of the esters are esters of pentaerythritol oligomers containing 4 or more pentaerythritol monomer units and wherein a majority of the alkylcarboxylate groups are straight chain C_3-6 alkanoyl groups, such as n-pentanoyl. Said mixture of alkylcarboxylate esters are shown to not only have higher than expected viscosity and exceptional CO₂ miscibility, but also possess excellent lubricity, film building properties and load bearing properties even as part of a lubricant/CO₂ solution.

The invention discloses energy-efficient long-life gasoline engine oil prepared from the following components: synthetic base oil, a composite antioxygen, a metal cleaning agent, an ashless dispersant, a nano-level friction improver, a viscosity improver and a pour point reducer. The gasoline engine oil provided by the invention has the following advantages: requirements of API SM, ILSAC GF-4 and SAEJ300 are met and the service life is long; the complete synthetic base oil features low pour point, high viscosity index, good economy of fuel, degradability and reduced harm to the ecological environment; the phenol type antioxygen is combined with ZDDP, the anti-oxygen and antifriction properties are good and the catalyst poisoning in a tail gas processing unit is prevented; the acid neutralization capacity is good, the cleaning dispersibility is good and the oil sludge and carbon deposit are prevented from being generated; and the nano-level friction improver is added, the frictional factor is low, and the oil film features high carrying capacity and can automatically repair abraded surface and lengthen the service life of the engine.

The present invention discloses high temperature chain oil, the components and the contents are: high temperature antioxygen 1 to 5 percent, extreme pressure/anti-wear agent 1 to 10 percent, corrosion inhibitor 0.01 to 0.5 percent, and high temperature detergent dispersant 1 to 20 percent, the rest is base oil; the components and the contents of the base oil (weight ratio) are: dipentaerythritol ester 50 to 90 percent, and aromatic ester 10 to 50 percent. The preparation is as follows: the dipentaerythritol ester and the aromatic ester are mixed together according to the above ratio to prepare the base oil, a certain volume of the high temperature antioxygen, the extreme pressure anti-wear agent, the high temperature detergent dispersant and the corrosion inhibitor is added into the base oil, then the base oil is heated to 80 to 100 DEG C, and is agitated at the constant temperature for 0.5 to 1 hour, and is filtrated, thus the product is got. The present invention is characterized in that the coking volume can be obviously reduced, the anti-high temperature coking performance and the high temperature detergency performance can be improved, the product can be used under the 280 DEG C high temperature condition, the evaporation loss is little, and the coking volume is little, the lubrication performance and the high temperature detergency and dispersing performance is good.

The invention provides air compressor oil which comprises the following components in parts by weight: 75-94 parts of synthetic hydrocarbon base oil, 5-20 parts of synthetic ester base oil and 1-5 parts of functional additive, wherein the functional additive comprises a purification dispersant, an antiwear agent, a metal deactivator, an antirust agent, an antioxidant, a pour point depressant, a demulsifying agent and an anti-foaming agent. The invention provides a preparation method of the air compressor oil. The preparation method comprises the step of mixing the synthetic hydrocarbon base oil, the synthetic ester base oil and the functional additive at the temperature of 60-80DEG C to obtain the air compressor oil. According to the air compressor oil provided by the invention, the synthetic oil is used as the base oil and the compound type functional additive is added, so that the air compressor oil provided by the invention has low oil sludge property. In addition, the air compressor oil provided by the invention also has the advantages of better thermal oxidation stability, low-temperature fluidity and higher viscosity index, and the use requirement of an air compressor is met.

The invention provides a stepless variable device transmission fluide compound. It comprises following components with their percentage on base oil weight: (1) bicyclo alicyclic hydrocarbon base oil, (2) alkali metal salt detersive, 0.05- 3%, (3) ashless dispersant 1- 15%, (4) phenol or amine anti- oxidant, 0.01- 1%, (5) antiwear agent, 0.05- 2%, (6) friction improver. 0.05- 3%, (7) viscosity index improver, 0-20%, (8) antifoam agent, 0- 1000ppm. The transmission fluide is characterized by good viscosity-temperature characteristic and low- temperature flowability, high drag coefficient at normal temperature, good comprehensive performance, and satification for CVT use requirement.

A method for improving the low temperature fluidity of lubricating oil compositions based on addition to lubricating oils of a mixture of selected high molecular weight and low molecular weight alkyl (meth)acrylate copolymers is disclosed. Combinations of low molecular weight alkyl (meth)acrylate polymers containing zero to 25 weight percent (C16-C24)alkyl (meth)acrylate with high molecular weight alkyl (meth)acrylate polymers containing 25 to 70 weight percent (C16-C24)alkyl (meth)acrylate are especially effective at satisfying different aspects of low temperature fluidity properties simultaneously for a broad range of base oils.

The invention provides an API oil sleeve thread sealing grease composite. The components of the composite include 40-50 percent of basic grease, 5-10 percent of dimethyl silicon oil, 16.5-20 percent of crystalline graphite powder, 6-9 percent of polyfluortetraethylene, 0.5-1.0 percent of expansion graphite powder, 1-2 percent of white carbon black, 3-4 percent of sericite in powder, 3-4 percent oflight calcium carbonate and 10-15 percent of tin bronze powder according to the percentage accounting for in the weight of the sealing grease composite. The invention also provides a preparation method of the API oil sleeve thread sealing grease composite. The invention has the beneficial effects that among the components of the sealing grease composite, synthetic oil is taken as a substitute formineral oil, and therefore the low temperature fluidity of the basic grease is improved to facilitate the brush application in winter. The addition of high performance antirust to the basic grease ensures that pipe threading does not rust when oil sleeves and pipes are stored outside in long term. Without zinc powder added but with the consumption of copper powder increased and other wear-resistant materials added, the high temperature lubricity of the grease is guaranteed and the pipe threading of the oil sleeves and pipes is prevented from thread gluing when screwing together. With novel high efficiency sealing materials added in the components of the sealing grease composite, the leak tightness of the grease is guaranteed.

The invention discloses special lubricating oil for a fuel gas engine of a public transport automobile. The special lubricating oil is prepared from blended base oil, binary ethylene-propylene rubber, polymethacrylate, alkylphenol calcium sulfide, high-base-number calcium alkylbenzenesulfonate, polyisobutylene succinimide, boronated polyisobutylene succinimide, alkylated phenyl-alpha-naphthylamine, p,p'-dioctyl diphenylamine, a hindered phenol type antioxidant, dialkyl molybdenum dithiocarbamate, copper nanoparticle anti-wear additives, methyl silicone oil and thiadiazole polysulfide. According to the lubricating oil composition oil product, the sulfate ash content is lower than 0.5%, the content of phosphorus is lower than 0.03%, and the base number is 3-8mgKOH/g. According to the special lubricating oil for the fuel gas engine of the public transport automobile, aiming at the special requirements of the public transport automobile on engine oil, different additive varieties and charging sequences are adopted, so that physical and chemical indicators and use performance of the special lubricating oil are better than natural gas engine lubricating oil of the same grade, and the special lubricating oil has excellent cleaning and dispersion properties, lubricating property, abrasion resistance and oxidation resistance.

The invention relates to a coagulation-reducing viscosity-reducing agent for high-coagulation thickened oil. By weight percentage, the coagulation-reducing viscosity-reducing agent for the high-coagulation thickened oil comprises the following materials: 0.1% to 0.2% of anion polyacrylamide, 5% to 10% of sodium acrylate-setanol acrylate copolymer, 5% to 15% of sodium dodecyl benzene sulfonate, 1%to 2% of mixture of hexafluoropropylene oxide dipolymer amide sulphobetaine and hexafluoropropylene oxide dipolymer amide amine oxide, 1% to 2% of sodium hydroxide and the balance water. The coagulation-reducing viscosity-reducing agent can disperse high-coagulation thickened crude oil, reduces the freezing point of the crude oil to above 0 DEG C and enables the viscosity of the crude oil to be smaller than 300mPa*s at the normal temperature. The using concentration of the coagulation-reducing viscosity-reducing agent can be controlled at 0.1% to 0.5%, is lower by one magnitude order than that (3% to 7%) of a traditional surfactant, is not limited by hydrophile-lipophile balance values and phase inversion temperature (PIT) and can emulsify the high-coagulation thickened oil at the temperature above the freezing point of the crude oil.

The invention discloses an improved solvent cold laid asphalt as well as a preparation process and using method thereof. The improved solvent cold laid asphalt is at a liquid state under normal temperature or low temperature; cold oil and cold materials can be directly blended for construction on the spot without heating, and the construction can be carried out at high/low temperature seasons and rain/snow weather, and a large number of machinery and labor are not required in the construction process, the construction is simple and convenient and the repair effect is good; traffic can be immediately opened after repair without affecting the travel of people; the improved solvent cold laid asphalt is usually used for daily maintenance, such as pot slot repair and emergency repair; meanwhile, the improved solvent cold laid asphalt has the advantages of no deterioration, no layering and the like after being stored for a long time.

The invention discloses a diesel fuel pour-point depressant dispersant and a preparation method thereof. The dispersant comprises the following components by weight percentage: 0-20% of Tween, 0-20% of polyethylene glycol, 0-10% of vinyl alcohol butyl ether, 0-10% of polar nitrogenous compounds and 50-80% of Span-80. The raw materials are weighed and mixed according to the weight percentage, and then the materials are stirred in a stirring tank with the speed of 100rpm for 30 min at the temperature of 50 DEG C, and the dispersant is prepared. In the invention, a new dispersant mixture is prepared by combining and mixing various kinds of dispersants uniformly, and then is used with the pour-point depressant according to a certain proportion, thereby improving the sensitivity of the pour-point depressant and the effect of pour point depression.

The invention relates to high molecular synthesis technology, in particular to an oil-based viscosity reducer for raw oil conveyed through a pipeline, and belongs to the technical field of chemical industry. The oil-based viscosity reducer is mainly used for reducing the viscosity of the raw oil conveyed through a long-distance pipeline and is prepared by the following steps of: synthesizing terpolymer by using higher alcohol acrylate, maleic anhydride and acrylamide in a molar ratio of 20-70 percent to 10-50 percent to 10-50 percent; synthesizing amide by using oleic acid and diethylenetriamine in a molar ratio of 20-80 percent to 20-80 percent; heating and uniformly mixing ethylene vinyl acetate copolymer, terpolymer, amide and another surfactant in a molar ratio of 0-80 percent to 0-80 percent to 5-60 percent to 5-60 percent in a compounding mode; and then cooling the obtained product and crushing the product into grains to obtain the oil-based viscosity reducer product.

The invention relates to a base oil used during drilling operation, wherein the base oil is a synthetic base drilling fluid base oil with characteristics of environmental protection, low toxicity, high safety and low-temperature fluidity. According to the present invention, the synthetic base drilling fluid base oil is formed by mixing Fischer-Tropsch synthetic oil and non-conventional petroleum-derived fine chemical base oil, and contains at least 35% by mass of a variety of C9-C20 n-alkanes, at least 60% by mass of a variety of C9-C20 branched or cyclic alkanes, and less than 0.5% by mass of aromatic hydrocarbon, the kinematic viscosity of the synthetic base drilling fluid base oil at the temperature of 40 DEG C is 2-3 mm<2>/s, the pour point is -10 to -30 DEG C, and the flash point is 50-80 DEG C.

The invention discloses a solvent-diluted open-typed gear lubricant, which is characterized by the following: the basic oil is high-viscosity synthesized oil; the thickener is composite calcium sulfonate; the additive is auxiliary extreme-pressure agent, anti-oxidant and diluent; the lucribant possesses superior high-low temperature adaptability (low-temperature fluidity and high-temperature adhesive), which is not easy to volatilize under normal temperature.

The invention discloses semisynthetic metal cutting fluid with trimethylolpropane oleate serving as base oil and a preparation method of the semisynthetic metal cutting fluid. The semisynthetic metal cutting fluid comprises the trimethylolpropane oleate, nonionic surfactants, anionic surfactants, antirust agents, cosolvents, extreme pressure agents, defoaming agents, bacteriacide and water. The preparation method of the semisynthetic metal cutting fluid includes: adding the extreme pressure agents into the base oil with uniform stirring so that solution A is obtained; then sequentially adding the defoaming agents, the antirust agents, the cosolvents and the bacteriacide into the water with uniform stirring so that solution B is obtained; and mixing the solution A with the solution B, and stirring while slowly dropwise adding the nonionic surfactants and the anionic surfactants so that a homogeneous and clarified micro-emulsion system, namely, the semisynthetic metal cutting fluid with the trimethylolpropane oleate serving as the base oil is obtained finally. The semisynthetic metal cutting fluid has good lubricity and biological degradability, has low-toxicity and low-harm to human bodies and the environment and is suitable for metal machining of most materials.

The invention provides a comprehensive preparation technology for preparing bisphenol F with high para isomeride content first and then preparing wind-power bisphenol F epoxy resin with high epoxide number and low viscosity through the bisphenol F. The comprehensive preparation technology is as follows: formaldehyde and phenol are taken as raw materials, subjected to phenol formaldehyde condensation in a methanol solvent by adoption of a phosphoric acid as catalyst, and subjected to toluene recrystallization and freezing to obtain the bisphenol F with high para 4, 4'-isomer content; the bisphenol F and epichlorohydrin are taken as raw materials, added with dichlorohydrin, and subjected to ring-opening addition etherification reaction in the presence of catalyst hyamine benzyltrim-ethy-lammonium chloride, so as to generate a bisphenol F dichloro-alcohol ether intermediate; the bisphenol F dichloro-alcohol ether intermediate is added with solid alkali in batch, subjected to primary ring-closure epoxidation dechlorination reaction, and added with adequate diluted liquid alkali and adequate toluene solvent for secondary ring-closure epoxidation dechlorination reaction after separation of superfluous epichlorohydrin; and the bisphenol F dichloro-alcohol ether intermediate is subjected to crystallization of the toluene solvent, hot-water washing, vacuum drying and so on to obtain the bisphenol F epoxy resin product with high epoxide number and low viscosity.