A rolling bearing is filled with a grease composition that contains a fluorine-based grease including a fluorine-based base oil and a fluorine-based thickener, a non-fluorine-based grease including a non-fluorine-based base oil and a non-fluorine-based thickener, and an additive serving as a dispersant. The non-fluorine-based thickener includes at least one of aliphatic-aromatic urea, alicyclic-aliphatic urea and aliphatic urea. The dispersant includes at least one of polycarboxylic acid metal salt, fluorine-containing group/lipophilic group-containing oligomer, fluorinated ether diamide, and organic acid metal salt.

A rolling bearing is filled with a grease composition that contains a fluorine-based grease including a fluorine-based base oil and a fluorine-based thickener, a non-fluorine-based grease including a non-fluorine-based base oil and a non-fluorine-based thickener, and an additive serving as a dispersant. The non-fluorine-based thickener includes at least one of aliphatic-aromatic urea, alicyclic-aliphatic urea and aliphatic urea. The dispersant includes at least one of polycarboxylic acid metal salt, fluorine-containing group/lipophilic group-containing oligomer, fluorinated ether diamide, and organic acid metal salt.

A wax inhibitor composition, the composition having at least one alpha-olefin maleic anhydride copolymer of the formula: ##STR00001##
wherein R.sub.1 is selected from hydrocarbyl groups containing 10-30 carbon atoms, and R.sub.2 is selected from a hydrogen or hydrocarbyl groups containing 10-80 carbon atoms, and R.sub.2, if not hydrogen, is broadly dispersed, wherein R.sub.2 comprises a weight fraction of carbon numbers greater than 30, wherein R.sub.2 can be the same or different, and n is a number of repeating units ranging from 1 to 100.

A water-soluble lubricant composition for warm and hot plastically working of an aluminum material comprising (A) hydrophilic polyester resin, (B) alkali metal salt of a polymaleic acid resin, (C) alkali metal salt of carboxylic acid and (D) water, and optionally (E) a wax.

A water-soluble lubricant composition for warm and hot plastically working of an aluminum material comprising (A) hydrophilic polyester resin, (B) alkali metal salt of a polymaleic acid resin, (C) alkali metal salt of carboxylic acid and (D) water, and optionally (E) a wax.

An automotive engine oil and/or fuel comprising a base stock and an organic polymeric friction reducing additive is claimed. A method of reducing friction in an automotive engine oil and/or fuel by the addition of the organic polymeric friction reducing additive to the base stock is also claimed.

An automotive engine oil and/or fuel comprising a base stock and an organic polymeric friction reducing additive is claimed. A method of reducing friction in an automotive engine oil and/or fuel by the addition of the organic polymeric friction reducing additive to the base stock is also claimed.

An oil composition includes an oil and an effective amount of a wax inhibitor that includes at least one modified alpha-olefin maleic anhydride copolymer of the formula: ##STR00001##
wherein R1 is selected from hydrogen or hydrocarbyl groups containing 12-60 carbon atoms and an average carbon atom number of R1, if not hydrogen, in the copolymer is in a range from 20 to 32, R2 is selected from hydrocarbyl groups containing 6-12 carbon atoms, and n is a number of repeating units ranging from 1 to 100.

Provided are a polyaspartic acid derivative and a preparation method and use thereof as a lubricant, and a water-based drilling fluid and use thereof. The polyaspartic acid derivative has a structure shown in formula I, wherein, in the formula I, R.sup.1 is selected from the group consisting of —CH.sub.2—CH.sub.2—CH.sub.2—, —CH.sub.2—CH.sub.2—CH.sub.2—CH.sub.2—, and —CH.sub.2—CH.sub.2—CH.sub.2—CH.sub.2—CH.sub.2—CH.sub.2—; R.sup.2 is selected from the group consisting of —OH, —N—(CH.sub.2—CH.sub.2—OH).sub.2, —O—CH.sub.2—CH.sub.2—NH—CH.sub.2—CH.sub.2—OH, —NH—CH.sub.2—CH.sub.2—OH, and —O—CH.sub.2—CH.sub.2—NH.sub.2; and n and m are independently 8 to 17. ##STR00001##

Provided are a polyaspartic acid derivative and a preparation method and use thereof as a lubricant, and a water-based drilling fluid and use thereof. The polyaspartic acid derivative has a structure shown in formula I, wherein, in the formula I, R.sup.1 is selected from the group consisting of —CH.sub.2—CH.sub.2—CH.sub.2—, —CH.sub.2—CH.sub.2—CH.sub.2—CH.sub.2—, and —CH.sub.2—CH.sub.2—CH.sub.2—CH.sub.2—CH.sub.2—CH.sub.2—; R.sup.2 is selected from the group consisting of —OH, —N—(CH.sub.2—CH.sub.2—OH).sub.2, —O—CH.sub.2—CH.sub.2—NH—CH.sub.2—CH.sub.2—OH, —NH—CH.sub.2—CH.sub.2—OH, and —O—CH.sub.2—CH.sub.2—NH.sub.2; and n and m are independently 8 to 17. ##STR00001##