Eneos Corporation

Jx Nippon Oil Energy Corporation

Jxtg Nippon Oil & Energy Corporation

Fumiyuki Nara

Hidetoshi Ogata

Yohei Shono

Takeshi Okido

Tomonari Matsumoto

Masanori Saito

Kuniko Adegawa

Makoto Ando

Hitoshi Takahashi

Katsuya Takigawa

Souichirou Konno

Kentaro Yamaguchi

Yuya Mizutani

Tomohiro Takaki

Takesh Okido

Matsumoto Tomonari

A refrigerating machine oil containing a hydrocarbon base oil having a 90% distillation temperature of 270° C. or lower.

Refrigerator oil and working fluid composition for refrigerator

A base oil for a refrigerating machine oil, having cyclic saturates of 40% by mass or less and non-cyclic saturates of 60% by mass or more in saturates, a density at 15° C. of 0.805 g/cmor lower, and a normal paraffin content of 50% by mass or less.

Base oil for refrigerator oil, refrigerator oil, and working fluid composition for refrigerator

A refrigerating machine oil having a flash point of 130° C. or lower and a carbon residue of 10% residual oil of 0.02% by mass or more.

Refrigerator oil, and working fluid composition for refrigerator

An aspect of the present invention provides a refrigerating machine oil containing: a lubricating base oil; and a polymer containing an unsaturated carboxylic acid ester as a monomer unit, wherein the unsaturated carboxylic acid ester contains an ester of an unsaturated carboxylic acid and an alcohol having a hydrocarbon group represented by the following formula (1): wherein x represents an integer of 5 to 18, and y represents an integer of 3 to 18.

A refrigerating machine oil containing: a lubricating base oil; and a polymer additive, wherein a carbon residue of 10% residual oil is 0.05% by mass or more.

Refrigerating machine oil, working fluid composition for refrigerating machine, lubricating method, and method for producing refrigerating machine oil

An aspect of the present invention provides a refrigerating machine oil containing: a lubricating base oil; a phosphorus-containing additive; and a polymer comprising an unsaturated carboxylic acid ester as a monomer unit.

Refrigerating machine oil

An aspect of the present invention provides a refrigerating machine oil containing a mixed base oil of a first hydrocarbon base oil having a kinematic viscosity at 40° C. of less than 6 mm/s and a second hydrocarbon base oil having a kinematic viscosity at 40° C. of 6 mm/s or more, wherein a (A)/(B) ratio is more than 1 and 1.5 or less, wherein (A) is a kinematic viscosity at 40° C. of the mixed base oil, and (B) is the kinematic viscosity at 40° C. of the first hydrocarbon base oil.

Refrigerating machine oil, working fluid composition for refrigerating machine, and method for producing refrigerating machine oil

A refrigerating machine oil containing: a lubricating base oil; and a compound represented by the following formula (1): 

Refrigerator oil and hydraulic fluid composition for refrigerators

A refrigerating oil comprising a lubricating base oil, a first extreme pressure agent containing sulfur and phosphorus as constituent elements and a second extreme pressure agent containing phosphorus but not containing sulfur as constituent elements, and having a kinematic viscosity at 100&#xb0; C. of 0.5 mm/s or more and 2.5 mm/s or less.

One aspect of the present invention is a refrigerating machine oil containing: a base oil containing an ester of an alcohol and a fatty acid; a compound represented by the following formula (1): wherein Rand Reach independently represent a monovalent hydrocarbon group, Rrepresents a divalent hydrocarbon group, and Rrepresents hydrogen atom or a monovalent hydrocarbon group, and the refrigerating machine oil having a kinematic viscosity at 40&#xb0; C. of 10 mm/s or less.

An aspect of the present invention relates to a refrigerating machine oil with a kinematic viscosity at 100&#xb0; C. of 0.5 mm/s or more and 1.5 mm/s or less, a 90% distillation temperature in gas chromatography distillation of 280&#xb0; C. or more and less than 360&#xb0; C., and an aniline point of 70&#xb0; C. or more.

A refrigerating machine oil having a kinematic viscosity at 100&#xb0; C. of 0.5 mm/s or more and 2.5 mm/s or less, a distillation end point in gas chromatography distillation of 380&#xb0; C. or more and 450&#xb0; C. or less, and a sulfur content of 0.001 mass % or more and 0.2 mass % or less.

The present invention provides a refrigerating machine oil comprising: a base oil; a compound represented by the following formula (1): wherein Rand Reach independently represent a monovalent hydrocarbon group, Rrepresents a divalent hydrocarbon group and Rrepresents a hydrogen atom or a monovalent hydrocarbon group; and an epoxy compound.

Refrigerator oil

A working fluid composition for a refrigerating machine comprising: a refrigerating machine oil containing at least one lubricating base oil selected from a mineral oil and a synthetic oil, and at least one phosphorus compound selected from a mono(alkylphenyl) diphenyl phosphate having a C3-C5 alkyl group and a di(alkylphenyl) phenyl phosphate having two C3-C5 alkyl groups, wherein a content of the phosphorus compound is 0.01 to 5% by mass based on a total amount of the refrigerating machine oil; and a hydrocarbon refrigerant having 2 to 4 carbon atoms.

Refrigerator working fluid composition and refrigerant oil

The lubricating oil composition of the invention comprises a lubricant base oil, a 3,4,5-trihydroxybenzoic acid ester at 5-5000 ppm by mass, and a phosphorus compound at 0.001-10.0% by mass, based on the total mass of the lubricating oil composition. The lubricating oil composition of the invention significantly lowers wear and exhibits a stable low frictional coefficient, while having a high rust-preventing effect for iron-based sliding sections. The lubricating oil composition of the invention is therefore suitable for prolonged use, and exhibits a notable effect for energy savings as well due to its stable low frictional coefficient property.

Growing community of inventors

Tokyo, Japan

Fumiyuki Nara