摘要:
A composition including one or more monomethyl ester compounds represented by the formula, R 1 is a monomethyl branched C 15 to C 19 alkyl group and R 2 is an unsubstituted C 2 to C 30 linear alkyl group. The composition has a viscosity (Kv 100 ) from 1 cSt to 10 cSt at 100°C as determined by ASTM D445, a viscosity index (VI) from -100 to 300 as determined by ASTM D2270, a pour point from 0°C to -50°C as determined by ASTM D97, and a Noack volatility of no greater than 50 percent as determined by ASTM D5800. A process for producing the composition, a lubricating oil base stock and lubricating oil containing the composition, and a method for improving one or more of cold flow properties, thermal and oxidative stability, solubility and dispersancy of polar additives, deposit control and traction control in a lubricating oil by using as the lubricating oil a formulated oil containing the composition.
摘要:
A lubricant composition comprising an oil of lubricating viscosity and an N-hydrocarbyl-substituted γ -aminoester or γ -aminothioester, wherein the N-hydrocarbyl substituent comprises a hydrocarbyl group of at least 3 carbons atoms, with a branch at the 1 or 2 position of the hydrocarbyl chain, provides exhibits basicity and good seal performance.
摘要:
A lubricating oil composition comprising oil, and an additive combination comprising a poly alpha-olefin polymer dispersant with a number average molecular weight above 2500, and a metal dihydrocarbyl dithiophosphate sufficient to yield a phosphorous content of up to 0.1 percent weight based on the total weight of the oil. The poly alpha-olefin polymer can be ethylene alpha-olefin copolymer such as ethylene-1-butene or ethylene-1-butene-hydrocarbyl polyamine. Preferably, the ethylene-1-butene-hydrocarbyl polyamine has a number average molecular weight of about 3300.
摘要:
The present invention generally pertains to a power transmission fluid composition comprising: (a) a major amount of lubricating oil; (b) an oil soluble phosphorus compound; (c) an ashless dispersant; and (d) an amine (i.e., alkyl primary amine) having the following Structure (I): R-NH2 wherein R is about a C8 to C30 alkyl. Optionally, the power transmission fluid composition may include an amine containing friction modifier.
摘要:
The detergent inhibitor package has been found to influence the viscometric properties of SAE 5W lubricants that have less than 5 mass % of non-coventional basestock, use a basestock that has an average base stock neutral number not less than 105, a calibrated Noack volatility of not more than 22 wt.% loss, and a kinematic viscosity at 100 DEG C (kV 100, measured by ASTM D445) less than 12.5 cSt. In particular, neutral and overbased calcium salts of orgnaic acids have been found to increase low temperature high shear viscosity when measured in the CCS (ASTM D5293). These salts which are widely used for their detergency and acid neutralization properties should be avoided altogether or used at a level not exceeding 0.0007 moles of organic calcium salt per 100 grams of lubricant. Where diesel performance is required, for example to lubricate passenger car diesel engines, a calcium salt of an organic acid may be required to control piston deposits. In that circumstance the level of calcium salt should be kept between 0.0004 and 0.0007 moles per 100 grams of lubricant.
摘要:
A continuous process for functionalizing olefins, especially polymer olefins in a CSTR or pipe reactor. Esters are preferably produced by continuous reaction of the olefin with carbon monoxide and a nucleophilic trapping agent. The liquid-filled pipe reactor operates in plug flow with static mixers and the CSTR is operated in the substantial absence of air at constant liquid level.
摘要:
This invention relates to shear stable lubricating compositions, particularly multigrade oils for crankcase lubrication of gasoline and diesel engines. Multigrade crankcase oils are formulated with an ashless dispersant comprising an oil soluble polymeric hydrocarbon backbone having functional groups in which the hydrocarbon backbone is derived from an ethylene alpha-olefin (EAO) copolymer or alpha-olefin homo- or copolymer having an M n of from 500 to 7000. They provide better fuel economy and better starting at cold temperatures. More economical multigrade crankcase oils may also be blended with less shear stable VMs for improved economy, with a possibility of employing a wider range of polymers. Oils may be blended having extremely good oil shear stability for the most demanding applications where high performance is required such as in turbocharged engines and racing engines, with reduced mechanical breakdown of the oil.
摘要:
A low sediment process for forming a borated, oil soluble, polymer-substituted, nitrogen- or ester-containing lubricating oil additive. A polymer-substituted, nitrogen- or ester-containing additive in the presence of a solvent therefor, is contacted under boronating reaction conditions in a reaction zone with particulate boric acid. The boric acid has a particle size distribution in lubricating oil characterized by a PHI value of not greater than about 450. The PHI value is the ratio of said particles' total spherical volume divided by said particles' total spherical external surface area; i.e., PHI = total spherical volume/total spherical surface area = SIGMA i (4/3)Ni pi di / SIGMA i Ni pi di wherein, for each of a plurality of distribution segments defining a particle size range; di is the average particle diameter for the ith distribution segment; Ni is the particle volume percent of the ith distribution segment; and the sum is taken over all the distribution segments.
摘要翻译:用于形成硼酸盐,油溶性,聚合物取代的含氮或酯的润滑油添加剂的低沉积方法。 在其溶剂存在下的聚合物取代的含氮或酯的添加剂在硼酸化反应条件下在反应区与硼酸颗粒接触。 硼酸在润滑油中的粒度分布特征在于PHI值不大于约450.PHI值是所述颗粒的总球体积除以所述颗粒的总球面外表面积的比率; 即,PHI =总球面体积/总球面表面积= SIGMA i(4/3)Ni pi di 3 / SIGMA i Ni pi di 2其中,对于限定粒度范围的多个分配段中的每一个 ; di是第i个分配段的平均粒径; Ni是第i个分配段的颗粒体积百分比; 并且所有分配段中的总和。
摘要:
Gel-free dispersant additives for lubricating and fuel oil compositions comprise at least one adduct of (A) alpha -olefin homopolymer or interpolymer of 700 to 10,000 M &cir& NOt n, free radically grafted with an average of from about 0.5 to about 5 carboxylic acid producing moieties per polymer chain, and (B) at least one non-aromatic nucleophilic post-treating reactant selected from (i) amine compounds containing only a single reactive amino group per molecule, (ii) alcohol compounds containing only a single hydroxy group per molecule, (iii) polyamine compounds containing at least two reactive amino groups per molecule, (iv) polyol compounds containing at least two reactive hydroxy groups per molecule, (v) aminoalcohol compounds containing at least one reactive amino group and at least one reactive hydroxy group per molecule, and (vi) mixtures of (i) to (v); provided that when said post-treating reactant includes one or more of (iii), (iv) or (v), the reaction between (A) and (B) is conducted in the presence of sufficient chain-stopping or end-capping co-reactant (C) to ensure that the grafted and post-reacted product mixture is gel-free.
摘要:
A functionalised polymer, especially an ashless dispersant or a viscosity index improver dispersant, suitable for use as a lubricating or fuel oil additive, or as an intermediate for use in the manufacture of such an additive, is prepared from reactants in different phases by reacting the reactants in a reaction region defined by adjacent surfaces between which there is relative movement or in a thin film on a surface over which they move.