Nippon Oil Corporation

Jx Nippon Oil Energy Corporation

Eneos Corporation

Petroleum Energy Center

Kao Corporation

Jxtg Nippon Oil & Energy Corporation

Kazuo Tagawa

Katsuya Takigawa

Yuji Shimomura

Ken Sawada

Shozaburo Konishi

Hideo Yokota

Toshio Yoshida

Hiroyuki Hoshino

Shigeki Matsui

Kazuaki Hayasaka

Satoshi Suda

Shinichi Shirahama

Hajime Nakao

Masahiro Hata

Eiji Akiyama

Junichi Shibata

Shinichi Mitsumoto

Masahiro Taguchi

Fuyuki Aida

Takashi Sano

Osamu Kurosawa

Akira Takagi

Akira Yaguchi

Ryuichi Ueno

Jiro Hashimoto

Kenichi Komiya

Teppei Tsujimoto

Koshi Takahama

Hiromitsu Matsuda

Tooru Aoki

Hiroya Miyamoto

Masataka Negishi

Miho Endou

Toshiyuki Obata

The present invention provides a wax isomerized oil, wherein a content of a hydrocarbon compound having an even number of carbon atoms, as determined from a chromatogram obtained by mass spectrometry, is more than 50% by mass based on a total amount of the wax isomerized oil.

Wax isomerized oil

A method for producing an oligomer, the method comprising a step of oligomerizing a polymerizable monomer comprising an olefin in the presence of a catalyst comprising an iron complex represented by the following Formula (1) and trialkylaluminum: [In Formula (1), R represents a hydrocarbyl group having 1 to 6 carbon atoms or an aromatic group having 6 to 12 carbon atoms, a plurality of R in the same molecule may be the same or different, R' represents a free radical having an oxygen atom and/or a nitrogen atom, a plurality of R&#x2032; in the same molecule may be the same or different, and Y represents a chlorine atom or a bromine atom].

Method for producing oligomer and catalyst

The present invention provides a method for preparing an oligomer and a catalyst comprising a step of oligomerizing a polymerizable monomer containing an olefin in the presence of a catalyst, which comprises (A) a complex of a diimine compound and at least one metal selected from the group consisting of Group 8 elements, Group 9 elements and Group 10 elements, (B) a mixture of a pyridine diimine compound and an iron salt and/or an iron complex, (C) methylaluminoxane and/or a boron compound, and (D) an organoaluminum compound other than methylaluminoxane and/or an organozinc compound. The components (A), (B), (C) and (D) described above are respectively as defined in the present Description.

An olefin polymerization catalyst containing a complex of a ligand being a diimine compound represented by the formula (1) and at least one metal selected from the group consisting of Group 8 elements, Group 9 elements and Group 10 elements: wherein Arand Arare respectively a group represented by the formula (2): wherein Rand Rare respectively a hydrogen atom or a hydrocarbyl group having 1 to 5 carbon atoms, the total number of carbon atoms of Rand Ris 1 or more and 5 or less, and R, Rand Rare respectively a hydrogen atom or an electron-donating group.

Olefin polymerization catalyst and method for producing olefin oligomer

The present invention provides a poly(meth)acrylate-based viscosity index improver comprising a core portion and three or more arm portions, wherein each of the arm portions consists of a polymer chain comprising a structural unit represented by the following formula (1), and one end of the polymer chain is bonded to the core portion, and wherein a weight-average molecular weight Mw is 100000 or more, and a ratio of the weight-average molecular weight Mw to a number average molecular weight Mn, Mw/Mn, is 1.6 or less.  [Rrepresents hydrogen or a methyl group, and Rrepresents a C1 to C36 alkyl group.]

Poly(meth)acrylate-based viscosity index improver, lubricant additive and lubricant composition containing viscosity index improver

The present invention provides a succinimide compound represented by the following formula (1-1) or (1-2), and a lubricating oil additive and a lubricating oil composition which contain the succinimide compound. wherein R represents an alkyl group or an alkenyl group having a number-average molecular weight of 500 or greater and less than 5000. wherein R represents an alkyl group or an alkenyl group having a number-average molecular weight of 500 or greater and less than 5000.

Succinimide compound, lubricating oil additive, and lubricating oil composition

The first refrigerating machine oil composition of the invention comprises a predetermined base oil, and at least one ester additive selected from esters of a monobasic fatty acid having 12 or more carbon atoms and a monohydric alcohol having 1-24 carbon atoms, and an ester of a chain-like dibasic acid and a monohydric alcohol. The second refrigerating machine oil composition of the invention comprises a predetermined base oil, and at least one oxygen-containing compound selected from the following (A1)-(A6). The third refrigerating machine oil composition of the invention comprises a predetermined base oil, and at least one oxygen-containing compound selected from the following (A1), (A2), (A4), (A7) and (A8).

Refrigerating machine oil compositions

The lubricating base oil of the invention is characterized by having an urea adduct value of not greater than 4% by mass and a viscosity index of 100 or greater. The process for production of a lubricating base oil according to the invention is characterized by comprising a step of hydrocracking/hydroisomerization of a stock oil containing normal paraffins, until the obtained treatment product has an urea adduct value of not greater than 4% by mass and a viscosity index of 100 or greater. A lubricating oil composition according to the invention is characterized by comprising the lubricating base oil of the invention.

Lubricant base oil, method for production thereof, and lubricant oil composition

The hydrocarbon-based lubricating base oil of the invention has a urea adduct value of not greater than 4% by mass, a viscosity index of 100 or greater, and a cycloparaffin content of 30-60% by mass based on the total amount of the saturated components, as measured by field desorption/ionization mass spectrometry. The hydrocarbon-based lubricating base oil of the invention allows high levels of both viscosity-temperature characteristic and low-temperature viscosity characteristic to be obtained, and exhibits excellence in terms of evaporation property and energy efficiency.

Lubricant base oil and a process for producing the same, and lubricating oil composition

A hydrocarbon-based lubricating base oil wherein a urea adduct value is not greater than 4% by mass, a viscosity index is 100 or higher, an average of carbon atoms number is 23-31 as determined by gas chromatography distillation, a value obtained by dividing an integral value of a peak in 30 ppm by an integral value of total peaks in the range of from 0 ppm to 50 ppm for theC-NMR spectrum is 0.1-0.2, and a product of a value obtained by dividing an integral value of peaks attributed to tertiary carbon atoms by an integral value of total peaks in the range of from 0 ppm to 50 ppm for theC-NMR spectrum, and the average of carbon atoms number, is 1.8-2.5.

The shock absorber fluid according to the invention is characterized by comprising a lubricating base oil that has a urea adduct value of not greater than 4% by mass and a viscosity index of 100 or greater. The shock absorber fluid according to the invention can exhibit a high level of all properties including viscosity-temperature characteristic, shear stability and antifoaming property.

Operating oil for buffer

A lubricating oil composition comprising: a lubricating base oil comprising a first lubricating base oil component having a urea adduct value of not greater than 4% by mass, a kinematic viscosity at 40&#xb0; C. of 14-25 mm/s and a viscosity index of 120 or higher and a second lubricating base oil component having a kinematic viscosity at 40&#xb0; C. of less than 14 mm/s, wherein the content of the first lubricating base oil component is 10-99% by mass and the content of the second lubricating base oil component is 1-50% by mass, based on the total amount of the lubricating base oil; and a viscosity index improver, the lubricating oil composition having a kinematic viscosity at 100&#xb0; C. of 4-12 mm/s and a viscosity index of 200-350.

Lubricant composition and method for producing same

The lubricating oil composition for an internal combustion engine of the invention comprises a lubricating base oil having a urea adduct value of not greater than 4% by mass and a viscosity index of 100 or greater, an ash-free antioxidant containing no sulfur as a constituent element, and at least one compound selected from among ash-free antioxidants containing sulfur as a constituent element and organic molybdenum compounds.

Lubricant oil composition for internal combustion engine

The present invention provides a lubricating base oil comprising saturated components of 90% by mass or greater, wherein the proportion of cyclic saturated components among the saturated components is not greater than 40% by mass, and by having a viscosity index of 110 or higher and an iodine value of not greater than 2.5. The lubricating base oil of the invention exhibits excellent viscosity-temperature characteristics and heat and oxidation stability while also allowing additives to exhibit a higher level of function when additives are included. The lubricating base oil of the invention is suitable for use in various lubricating oil fields, and is especially useful for reducing energy loss and achieving energy savings in devices in which the lubricating base oil is applied.

Lube base oil, process for production thereof, and lubricating oil composition

The present invention provides a refrigerating machine oil, a compressor oil composition, a hydraulic oil composition, a metalworking oil composition, a heat treating oil composition, a lubricating oil composition for machine tools and a lubricating oil composition which comprise a lubricating oil base oil having % Cof not more than 2, % C/% Cof not less than 6 and an iodine value of not more than 2.5.

Growing community of inventors

Yokohama, Japan

Kazuo Tagawa