Lubricating oil composition

Lubricating oil compositions exhibititing improved low temperature valve train wear performance with a lowered phosphorus content, which contain a reduced amount of a metal hydrocarbyl dithiophosphate, a molybdenum compound, a metal- free friction modifier and a phosphorus-free antioxidant.

Automatic transmission fluids and additives therefor

An effective way is described for overcoming the shudder problem associated with continuous slip torque converter clutches for use in automatic transmissions, especially shudder which occurs with new friction materials before break-in. To do this, an ATF is used in which the friction modifier system consists essentially of (i) an N-aliphatic hydrocarbyl-substituted diethanoiamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of 14 to 20 carbon atoms, and (ii) an N-aliphatic hydrocarbyl-substituted trimethylenediamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of about 14 to about 20 carbon atoms. The ATF is devoid of any tertiary amine friction modifier component and any C12-36 aliphatic hydrocarbyl succinimide or succinamide friction modifier. Specified relative proportions and concentrations of (i) to (ii) are used.

Automatic transmission fluids and additives therefor

An effective way is described for overcoming the shudder problem associated with continuous slip torque converter clutches for use in automatic transmissions, especially shudder which occurs with new friction materials before break-in. To do this, an ATF is used in which the friction modifier system consists essentially of (i) an N-aliphatic hydrocarbyl-substituted diethanolamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of 14 to 20 carbon atoms, and (ii) an N-aliphatic hydrocarbyl-substituted trimethylenediamine in which the N-aliphatic hydrocarbyl-substituent is at least one straight chain aliphatic hydrocarbyl group free of acetylenic unsaturation and having in the range of about 14 to about 20 carbon atoms. The ATF is devoid of any tertiary amine friction modifier component and any C 12-36 aliphatic hydrocarbyl succinimide or succinamide friction modifier. Specified relative proportions and concentrations of (i) to (ii) are used.

Friction modifying compositions and their use

Lubricants with enhanced low temperature properties

Abstract of the Disclosure Lubricants having a Brookfield viscosity at -40°C equal to or below 20,000 cP (preferably 15,000 or less) are formed from blends composed of a major amount ofmineral oil in the range of 75N to 200N; and minor amounts of poly-a-olefin oligomer (PAO) formed from 1-alkene of 6 to 20 carbon atoms and having a kinematic viscosity in the range of 2 to 7 cSt at 100°C; and acrylic polymeric viscosity index improver. Synergistic low temperature viscometric properties are exhibited by typical compositions of this type.

Synthetic biodegradable lubricants and functional fluids

Synthetic biodegradable lubricants and functional fluids containing 45-94 wt.% of an ester of a C5-C10 acid as the base oil, 5-18% of a polyol ester of a C12-C28 acid as a lubricity additive, and a 1-35 wt.% of an additive package for lubricants and functional fluids.

Combustion improving additive for small engine lubricating oils

There are disclosed novel reaction products of a borated hydrocarbyl succinimide dispersant and phosphate or phosphite compounds which are highly effective combustion improver additives for use in two-cycle and small engine four-cycle lubricating oils.

Combustion improving additive for small engine lubricating oils

Additive compositions

Compositions in the form of lubricating oil compositions, greases, fuels or functional fluids containing, in the form of Michael adducts, N-substituted phenylenediamine additives in which at least one of the substituents on the N atoms carries a carbonyl group that is connected to an alkyl, alkoxyalkyl, or alkylthioalkyl group either directly or via an oxygen atom.

Lubricating oil compositions

A lubricating oil composition formulated with a viscosity index (VI) improver composition including a combination of an ethylene a-olefin copolymer having no greater than 66 mass % of units derived from ethylene, and a linear diblock copolymer including at least one block derived primarily from a vinyl aromatic hydrocarbon monomer, and at least one block derived primarily from diene monomer.

Lubricating oil compositions for outboard engines

The lubricating compositions of the present invention are designed for use in a four stroke outboard marine engine and contain an oil of lubricating viscosity, an ashless dispersant, a metal detergent, a rust inhibitor, a relatively high amount of ZDDP, and an amount of a molybdenum compound sufficient to provide the composition with 15-1,000 ppm by mass of molybdenum. An amount of about 15 ppm to 1,000 ppm by mass of molybdenum from a molybdenum compound has been found to be effective as an antiwear agent in combination with the high levels of ZDDP.

Lubricating oil compositions

A lubricating oil composition formulated with a viscosity index (VI) improver composition including a combination of an ethylene .alpha.-olefin copolymer having no greater than 66 mass % of units derived from ethylene, and a linear diblock copolymer including at least one block derived primarily from a vinyl aromatic hydrocarbon monomer, and at least one block derived primarily from diene monomer.

Additive compositions with michael adducts of non-substituted phenylendiamines

Compositions in the form of lubricating oil compositions, greases, fuels or functional fluids containing, in the form of Michael adducts, N-substituted phenylenedi amine additives in which at least one of the substituents on the N atoms carries a carbonyl group that is connected to an alkyl, alkoxyalkyl. or alkylthioalkyl group either directly or via an oxygen atom.

Gear oil compositions

Gear oil compositions

Gear oil additive concentrates and lubricants containing them

The concentrate comprise specified proportions of diluent oil, an organic sulfur-containing antiwear and/or extreme pressure agent, an ashless dispersant, a dimethyl ester of an aliphatic phosphonic acid in which the aliphatic group has an average in the range of about 12 to about 24 carbon atoms, and a 3-hydro-carbyl-2,5diketopyrrolidine in which the hydrocarbyl group is an alkyl or alkenyl group having an average in the range of about 12 to about 30 carbon atoms. By using weight ratios of diketopyrrolidine to the dimethyl phosphonate of at least 3:1, the concentrate remains homogeneous at temperatures at least as low as 12°C. When utilized as a top treat in gear oils formulated with conventional GL-4 and GL-5 gear additive packages substantial improvement in limited slip axle performance can be realized.

Friction modifiers for engine oil composition

A lubricating oil composition which exhibits improved fuel economy and fuel economy retention which contains keto-amide and keto-ester friction modifiers formed by reaction or trans-esterification of alkyl acetoacetates. The trans-esterified products are also novel compositions of matter.

Lubricant additive compositions

Oil additive concentrates and lubricants of enhanced performance capabilities

Additive concentrates and lubricant compositions containing a combination of additives which result in enhanced performance particularly as regards extreme pressure and antiwear performance. The combination of additives so utilized comprise a-1) at least one oil-soluble additive composition formed by heating concurrently or in any sequence at least one ashless dispersant which contains basic nitrogen and/or at least one hydroxyl group with (i) at least one inorganic phosphorus acid or anhydride, or at least one partial or total sulfur analog thereof, or any combination of the foregoing, and (ii) at least one boron compound; such that a liquid composition is formed; or a-2) at least one oil-soluble boron-free additive composition formed by heating (i) at least one boron-free oil-soluble ashless dispersant containing basic nitrogen and/or at least one hydroxyl group, with (ii) at least one inorganic phosphorus acid such that a liquid boron-free phosphorus-containing composition is formed; or a-3) one or more oil-soluble additive compositions formed by heating concurrently or in any sequence at least one ashless dispersant which contains basic nitrogen and/or at least one hydroxyl group with (i) at least one water-hydrolyzable organic phosphorus compound and water; and (ii) at least one boron compound; such that a liquid phosphorus-and boron-containing composition is formed; or a-4) one or more oil-soluble boron-free additive compositions formed by heating concurrently or in any sequence (i) at least one boron-free oil-soluble ashless dispersant which contains basic nitrogen and/or at least one hydroxyl group, with (ii) -at least one water-hydrolyzable organic phosphorus compound and water; such that a liquid boron-free phosphorus-containing composition is formed; and b) at least one oil-soluble metal-free sulfur-containing antiwear and/or extreme pressure agent having a sulfur content of at least 20% by weight; components a-1), a-2), a-3) or a-4) and b) being ...

Lubricating oil composition

Lubricating oil compositions containing a major amount of oil of lubricating viscosity, an oil soluble molybdenum compound in an amount providing the composition with from 0.001 to 0.1 mass % molybdenum, an oil soluble copper antioxidant in an amount providing the composition with from 0.001 to 0.02 mass % copper to said composition, and an amount of metal hydrocarbyl dithiophosphate providing the composition with from 100 to 550 ppm phosphorus.

Lubricating oil compositions for outboard engines

The lubricating compositions of the present invention are designed for use in a four stroke outboard marine engine and contain an oil of lubricating viscosity, an ashless dispersant, a metal detergent, a rust inhibitor, a relatively high amount of ZDDP, and an amount of a molybdenum compound sufficient to provide the composition with 15-1,000 ppm by mass of molybdenum. An amount of about 15 ppm to 1,000 ppm by mass of molybdenum from a molybdenum compound has been found to be effective as an antiwear agent in combination with the high levels of ZDDP.

Lubricating Oil Composition

A lubricating oil composition containing a combination of oil of lubricating viscosity, one or more block copolymers of hydrogenated poly(monovinyl aromatic hydrocarbon) and poly(conjugated diene) as a viscosity modifier, and one or more one or more optionally substituted bridged hydrocarbyl phenol condensates, or metal salts thereof, as a detergent.

Schmieröle für kleinmotoren enthaltend einen verbrennungsverbesserenden zusatz

Öllösliche Additive enthaltend Phosphor und Stickstoff

Lubricating oil composition

A containing a combination of oil of lubricating viscosity, one or more block copolymers of hydrogenated poly(monovinyl aromatic hydrocarbon) and poly(conjugated diene) as a viscosity modifier, and one or more one or more optionally substituted bridged hydrocarbyl phenol condensates, or metal salts thereof, as a detergent.

Schmierölzusammensetzung

潤滑油組成物

(57)【要約】 【課題】 リン、塩素及び硫黄のレベルが低く、かつ、 揮発度が低い潤滑油組成物を提供すること。 【解決手段】 （ａ）グループＩＩ、グループＩＩＩ、 グループＩＶ及び合成エステルベースストック油からな る群より選ばれる、潤滑粘度を有する多量の油； （ｂ）過塩基化サリチル酸カルシウム又はマグネシウム 潤滑油清浄剤； （ｃ）油溶性有機モリブデン化合物； （ｄ）無灰分散剤；及び （ｅ）追加の酸化防止剤 の混合物を含む潤滑油組成物であって、硫黄含量が０． ２質量％未満であり、塩素含量が５０質量ｐｐｍ未満で あり、リン含量が５０質量ｐｐｍ未満であり、かつ、Ｎ ＯＡＣＫ揮発度が１５質量％又はそれ未満である組成 物。