2405 results about "Viscosity index" patented technology

The present invention relates to a composition comprising more than 25 weight % (based on the weight of the composition) of one or more ethylene polymers having an M_w of 20,000 g/mole or more and at least 0.1 weight % of a liquid hydrocarbon modifier where the modifier has: 1) a viscosity index of 120 or more, and 2) an kinematic viscosity of 3 to 3000 cSt at 100° C., and 3) a pour point of −10° C. or less, and 4) a flash point of 200° C. or more; and wherein the modifier contains less than 5 weight % of functional groups selected from hydroxide, aryls, substituted aryls, halogens, alkoxys, carboxylates, esters, acrylates, oxygen, nitrogen, and carboxyl, based upon the weight of the modifier.

A lubricant composition comprises a base oil and a viscosity modifier including an ethylene/α-olefin interpolymer. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block copolymer has a number of unique characteristics disclosed here. Such block copolymers offer the possibility of improved low temperature performance and flexibility in formulating motor oil, gear lubricants and greases, etc.

The present invention relates to a composition comprising 1) from 1 to 98 weight % of a first propylene polymer having a melting point of 100° C. or more, 2) from 5 to 98 weight % of a second propylene polymer having a heat of fusion of 70 J/g or less and a tacticity index of 75% or more, 3) from 0.5 to 75 weight % of a non-functionalized plasticizer (“NFP”) having a viscosity index of 120 or more, based upon the weight of the first polymer, second polymer, and the NFP, and articles therefrom

Lubricating oil compositions having excellent thermal and oxidative stability, wear control, copper corrosion control and compatibility with seal materials comprising a mineral oil having a) a Viscosity Index of greater than 110 and an aniline point of greater than 110 DEG C. and/or b) a linear+single ring paraffin content of greater than 68 wt %, and at least one polymer selected from olefin (co) polymer(s), polyalkyl (meth) acrylate(s) and mixtures thereof. The lubricating oil compositions are particularly useful as manual transmission and axle lubricants.

The present invention comprises novel lubricating compositions, automotive gear lubricating compositions, and fluids useful in the preparation of finished automotive gear lubricants and finished gear oils, and methods of preparation thereof. One embodiment of the present invention comprises a lubricating composition comprising a blend of a PAO having a viscosity of greater than or equal to about 40 cSt. at 100° C. and less than or equal to about 1,000 cSt. at 100° C. and an ester having a viscosity of less than or equal to about 2.0 cSt. at 100° C., wherein said blend of said PAO and said ester has a viscosity index greater than or equal to the viscosity index of the PAO.

The present invention is a process for producing a high viscosity index and low pour point lubricating oil base stock which comprises catalytically converting a hydrotreated hydrocarbon lube oil feedstock containing waxy paraffins in the presence of hydrogen and in the presence of a low acidity ZSM-5 catalyst having a highly dispersed noble metal component. The ZSM-5 catalyst is subjected to controlled acidity reduction to an alpha value below 15 prior to incorporation of the noble metal component.

The invention relates to industrial lubricant and grease compositions containing high viscosity index polyalphaolefins (HVI-PAO). The use of HVI-PAOs in industrial oils and greases application provides advantages in improved shear stability, wear property, foam property, energy efficiency and improved overall performance.

This disclosure provides for alpha olefin oligomers and polyalphaolefins (or PAOs) and methods of making the alpha olefin oligomers and PAOs. This disclosure encompasses metallocene-based alpha olefin oligomerization catalyst systems, including those that include at least one metallocene and an activator comprising a solid oxide chemically-treated with an electron withdrawing anion. The alpha olefin oligomers and PAOs prepared with these catalyst systems can have a high viscosity index combined with a low pour point, making them particularly useful in lubricant compositions and as viscosity modifiers.

The invention relates to a new base stock material. Specifically the invention relates to a saturated hydrocarbon composition and particularly to a composition based on biological raw materials, to be used as a high-quality base oil or to be used as a component in the production of a base oil having a high viscosity index and good low temperature properties. The composition contains saturated hydrocarbons and has a narrow carbon number range.

An engine lubricant formulated as a complete crankcase motor oil or additive concentrate composed of a combination of chemical constituents including a base oil selected from a synthetic oil, a mineral oil or semi-synthetic base oil (hydrogenated oil) or combination thereof, an oil soluble molybdenum additive, a dispersant inhibitor containing zinc dithiophosphate, and viscosity index improvers and one or more seal swelling agents to lubricate the engine and recondition the seals of new and/or high mileage engines. Addition of a polyalphaolefin and/or one or more esters such as a diester or polyolester may also be utilized therein. The lubricant may be formulated as a complete engine oil crankcase lubricant, or concentrated into an additive for addition to conventional mineral oil based engine oil, synthetic engine oils, or blends thereof in an effective amount of up to 30 percent volume percent, typically from 20 to 25 percent by volume.

One or more oligomers of an olefin are prepared in the presence of a single-site catalyst. Preferably, the olefin is an α-olefin, and the oligomers are a poly-alpha-olefin (PAO). The PAO so prepared is completely or substantially free of tertiary hydrogen resulting from isomerization. Consequently, the PAO possesses improved biodegradability, improved oxidation resistance, and/or a relatively higher viscosity index. The PAO has many useful applications, such as a component of a lubricant.

The lubricating oil composition of the invention comprises a lubricating base oil with a urea adduct value of no greater than 4% by mass and a viscosity index of 100 or higher, an ashless friction modifier at 0.01-10% by mass and a phosphorus-containing anti-wear agent at 0.01-0.2% by mass as phosphorus, based on the total amount of the composition.

This invention relates to processes of producing lubricant base oils comprising paraffinic hydrocarbon components that have optimized branching. The lubricant base oils comprising paraffinic hydrocarbon components with optimized branching have low amounts of branching with the branching concentrated toward the center of the lubricant base oil molecules. The lubricant base oils comprising paraffinic hydrocarbon components with optimized branching have low pour points and extremely high viscosity indexes. The invention further relates to processes of producing commercial lubricants comprising the lubricant base oils comprising paraffinic hydrocarbon components with optimized branching from waxy feeds.

A lubricant composition for use as a concentrate and motor oil having an enhanced thermal conductivity. One preferred composition contains a lubricant composition, nanomaterial, and a dispersing agent or surfactant for the purpose of stabilizing the nanomaterial. One preferred nanomaterial is a high thermal conductivity graphite, exceeding 80 W/m in thermal conductivity. Carbon nano material or nanostructures such as nanotubes, nanofibrils, and nanoparticles formed by grounding and/or milling graphite to obtain a mean particle size less than 500 nm in diameter, and preferably less than 100 nm, and most preferably less than 50 nm. Other high thermal conductivity carbon materials are also acceptable. To confer long-term stability, the use of one or more chemical dispersants or surfactants is useful. The graphite nanomaterials contribute to the overall fluid viscosity and providing a very high viscosity index. Particle size and dispersing chemistry is controlled to get the desired combination of viscosity and thermal conductivity increase from the lubricant. The resulting fluids have unique properties due to the high thermal conductivity and high viscosity index of the suspended particles, as well as their small size.

The invention relates to grease compositions containing high viscosity index polyalphaolefins (HVI-PAO) and polyurea thickeners. The use of HVI-PAOs and polyurea thickeners in a bi-modal base stock grease application provides favorable frictional properties and improved overall performance.

The present invention provides a lubricating oil composition, which is capable to maintain sufficient low-friction (i.e. fuel saving performance) even when the lubricating oil is contaminated with soot and metal abrasion powder, which is excellent in durability with regard to anti-wear property and detergency, as well as oxidation stability, and which is capable to lower the ash content and to sufficiently maintain the performance of exhaust-gas after-treatment device for a long term. The lubricating oil composition comprises a lubricant base oil containing a base oil (X) of which % C_P is 70 or more, % C_A is 1 or less, viscosity index is 115 or more, and CCS viscosity at −35° C. is 3000 mPa·s or less, wherein the lubricant base oil, to total mass of the composition, contains following components (A)˜(D):

• (A) 0.01˜10 mass % of ashless friction modifier;
• (B) 0.01˜0.2 mass % of phosphorus-containing anti-wear agent as phosphorous content;
• (C) 0.01˜1 mass % of metallic detergent as metal content; and
• (D) 0.01˜0.4 mass % of ashless dispersant having 3000˜20000 of weight-average molecular weight as nitrogen content.

The invention discloses a hydroisomerization catalyst, a preparation method and an application thereof. The preparation method comprises the following steps: a) providing a catalyst precursor containing a carrier, and a compound containing noble metals in the VIII group and a compound containing a second metal which are both supported on the carrier, wherein the two compounds hereinabove are both non-oxides, the second metal is one or more than two selected from the metal in the VB group, the metal in the VIB group, non-noble metal in the VIII group and lanthanum-series metals, the carrier containing mesoporous molecular sieve; and b) roasting the catalyst precursor in an atmosphere formed by a gas containing an oxidizing gas and a halogen-containing compound. The invention also discloses a hydroisomerization method for hydrocracked tail oil with the hydroisomerization catalyst. The hydroisomerization catalyst, when being used in the hydroisomerization for the hydrocracked tail oil, can be used for producing an isomerized product having high viscosity index and low pour point, which is suitable for being used as lubricant basic oil.

This invention provides a hydraulic oil comprising: 1) a lubricant base oil having an average molecular weight greater than 475, a viscosity index greater than 140, and a weight percent olefins less than 10; and 2) an antiwear hydraulic oil additive package. The hydraulic oil of this invention has an air release by ASTM D 3427-03 of less than 0.8 minutes at 50 degrees C., and a sequence II foam tendency by ASTM D 892-03 of less than 50 ml. We describe a process for making the hydraulic oil of this invention, and a method of operating a hydraulic pump without pump cavitation using the hydraulic oil of this invention.

The present invention relates to a hydraulic-transmission- braking three-use lubricating oil composition, which is prepared by mixing the following raw materials, by weight, 85-98% of high viscosity index base oil, 0.1-5% of an extreme pressure wear resistance agent, 0.1-4% of an antioxidant, 0.1-3% of a metal deactivator/antirust agent, 0.1-5% of a friction modifier, and 0.1-2% of a dispersing agent. The hydraulic-transmission- braking three-use lubricating oil composition has beneficial effects of good low temperature fluidity, friction reduction, wear resistance, corrosion resistance, rust resistance, emulsification resistance and foaming resistance, and can meet requirements of universal hydraulic transmission oil used by large-medium-sized tractors and construction machinery so as to achieve complete lubricating protection on hydraulic parts, transmission parts, gear parts, power output parts and braking parts, such that a long service life is provided, equipment operation stability is easily improved, and energy saving and consumption reduction are provided.

The invention relates to oil compositions containing metallocene catalyzed high viscosity index polyalphaolefins (HVI-PAO). In one embodiment the oil formulation comprises a metallocene catalyzed HVI-PAO with a viscosity greater than 125 cSt kv 100° C. and a viscosity index greater than 100, a second base stock with a viscosity of at least 2 cSt kv 100° C. and less than 60 cSt kv 100° C. wherein the second base stock is at least 60 cSt kv 100° C. less than the metallocene HVI-PAO, an ester with a viscosity of at least 2 and less than 6, the ester comprising more than 10 weight percent and less than 30 weight percent of the oil formulation, the oil formulation having a viscosity index of greater than 195. The use of metallocene catalyzed HVI-PAOs in a bimodal blend provides advantages in improved shear stability, and other properties related to shear stability.

The present invention discloses one kind of isomerizing and dewaxing catalyst for lubricant oil production and its preparation. Specifically, SAPO-11 as acid component and organic matter are used tomodify prepared catalyst carrier and to protect the medium strength acid centers on the carrier, and the dried carrier is loaded with active metal component and high temperature roasted to release its protected acid centers and to produce the catalyst of the present invention. The catalyst is used for the isomerizing and dewaxing reaction of lubricant oil fraction in the presence of hydrogen, and has the advantages of high yield of lubricant oil base oil, low product pour point, high viscosity index and other advantages.

Dewaxing a hydrocarbon feed by isomerizing feed with catalyst comprising small crystallite molecular sieve having MTT framework, the catalyst containing at least one metal selected from the group consisting of Ca, Cr, Mg, La, Na, Pr, Sr, K and Nd, and at least one Group VIII metal. A dewaxing method to produce products boiling at 343° C. (650° F.) or higher with low pour points and high viscosity indexes wherein the line fit to the chart of the pour points and the viscosity indexes has a slope of zero or less. A dewaxing process, comprising isomerization dewaxing feed with a viscosity at 100° C. of 2.5 mm²/s or greater over a metal-modified molecular sieve to produce products with low pour points and high viscosity indexes; the line fit to the chart of the pour points and the viscosity indexes has a slope of zero or less; and wherein the yield of products is high.

A lubricating oil composition comprising base oil, one or more glycerol esters selected from glycerol monooleate and/or glycerol dioleate, optionally in combination with glycerol trioleate, wherein said composition further comprises one or more dispersant-viscosity index improver compounds and an additive amount of one or more additional polyhydric alcohol esters; and a method of lubricating an internal combustion engine comprising applying said lubricating oil composition thereto.

The invention provides lubricating oil for a methanol fuel engine, which comprises the following components in percentage by weight: metal detergent 2.2-5.2, ashless dispersant 3.5-6.8, antioxidant and anticorrosion agent 0.5-1.6, high-temperature antioxidant 0.3-0.8, viscosity index improver 6-11, oiliness solvent 2.8-6, anti-foaming agent 120ppm, metal anti-rust agent 0.3-0.7, base oil 62.7-83, demulsifying agent 0.1-0.3, metal extreme pressure anti-wear agent 1.0-4 and pour point depressant 0.3-0.9. The lubricating oil of the invention has functions of preventing wear and rust of the engine, can prevent the active ingredients thereof from being extracted and emulsified by methanol and is particularly suitable for engines using M85 or M100 methanol gasoline as a fuel.