Abstract: The present invention generally relates to methods and hydrate inhibitor compositions for inhibiting the formation of hydrates in a fluid comprising gas and water. More specifically, the method comprises contacting a hydrate inhibitor composition to a fluid. The hydrate inhibitor composition comprises a nonpolar solvent; a polar solvent; and a polymer, an oligomer, a dendrimer, or an acid or salt thereof.

Abstract: Provided is a lubricant composition for a full transmission system, comprising: (A) at least an ashless dispersant; (B) at least a friction modifier; (C) at least a phosphorus-containing antiwear agent; (D) at least an antirust additive; (E) at least a sulfur-containing extreme-pressure additive; (F) at least a metal deactivation additive; (G) at least a viscosity index improver; (H) at least a pour-point depressant; and (I) at least a highly refined mineral oil with high viscosity index, or polyolefin synthetic oil, or ester synthetic oil, or any combination of the above components. The lubricant composition has excellent cleaning dispersity, frictional characteristic, antirust and anti-corrosive properties and extreme pressure abrasion resistance, meets US force standard MIL-PRF-2105E, and can be used for lubrication in various vehicle transmission systems.

Abstract: A fuel economical lubricating oil composition for internal combustion engines comprises a base oil and an additive composition comprising an overbased metal-containing detergent and a molybdenum-containing friction modifier, in which the overbased metal-containing detergent comprises calcium salicylate having an alkyl group having an average carbon atom number of 14-18, at least 60 mol. % of the alkyl group having a carbon atom number of 14-18, and calcium sulfonate having an alkyl group having an average carbon atom number of 20-24, at least 60 mol. % of the alkyl group having a carbon atom number of 20-24, and/or calcium salicylate having an alkyl group having an average carbon atom number of 20-28, at least 60 mol. % of the alkyl group having a carbon atom number of 20-28.

Abstract: A lubricant oil composition containing an organic molybdenum compound which contains at least either one of a nitrogen (N) atom and an oxygen (O) atom in the molecule thereof and which may optionally contain a sulfur (S) atom, wherein a sulfur content of the organic molybdenum compound is 0.5% by mass or less based on the organic molybdenum compound. The lubricant oil composition, when used as a lubricant oil for a low-friction sliding material, exhibits an extremely low friction coefficient. A sliding mechanism having excellent low-friction property and wear resistance can be provided by combining the lubricant oil composition and a sliding member having a DLC film on its sliding face.

Abstract: The invention is directed to oil soluble additive compositions, lubricating oil compositions derived from a process for preparing a sulfurized oil soluble molybdenum complex having reduced active sulfur comprising: reacting an acidic molybdenum compound with an amide derived from a carboxylic acid component an polyamine component in a ratio from 2:1 to 1:1; there after sulfurizing to provide a sulfurized oil soluble molybdenum which is subsequently treated with at least one compound capable of reacting with the active sulfur of step b).

Abstract: Dispersant/VI improvers for lubricating oil compositions are disclosed which comprise the reaction product of (a) a copolymer of octadecene-1 and maleic anhydride, the copolymer having a number average molecular weight from greater than 6300 to less than 12000; and (b) a succinimide prepared from a polyamine and an acyclic hydrocarbyl-substituted succinic acylating agent of the formula: ##STR1## wherein X and X.sup.1 are the same or different; provided that at least one of X and X.sup.1 is such that the copolymer can function as a carboxylic acylating agent, and optionally (c) a primary or a secondary hydrocarbyl monoamine or a mixture thereof, preferably an amine of the formula: ##STR2## wherein R.sup.1 is either a saturated or an unsaturated aliphatic hydrocarbyl group, and R.sup.2 is either R.sup.1 or hydrogen, and the total number of carbon atoms in the groups R.sup.1 and R.sup.