Idemitsu Kosan Company, Limited

Akinori Yomogita

Kiyoshi Ikeda

Masami Watanabe

Hironori Kawakami

Masahiro Kawamura

Tomoki Kato

Nobuhiro Yabunouchi

Hidetoshi Ono

Mitsunori Ito

Masahide Matsuura

Mitsuru Eida

Shigeru Matsuo

Yumiko Mizuki

Takushi Shiomi

Yukio Yoshida

Hideaki Hattori

A lubricating oil composition containing a base oil (A), a comb-shaped polymer (B), and an olefin-based copolymer (C), wherein a content of the component (B) is more than 0.80 mass % based on the total amount of the lubricating oil composition, a weight average molecular weight of the component (C) is 500,000 or more, and the lubricating oil composition has a viscosity index of 200 or more and a kinematic viscosity at 100° C. of 9.3 to 11.0 mm/s.

Lubricant oil composition, internal combustion engine, and method for using lubricant oil composition

A vapor film-rupturing agent is provided that is prepared from asphalt as a staring material, so as to have a fraction (x) (% by mass) of a saturated component and a fraction (y) (% by mass) of an asphaltene component based on the total fraction 100% by mass of the saturated component, the asphaltene component, an aromatic component, and a resin component obtained by any one of analysis methods described in the Japan Petroleum Institute Standard and Manuals Testing Method for Petroleum Products JPI-5S-70-10 and the British Standard Test Method IP-469 that satisfy one or more of the following conditions (1) to (3): condition (1): 1.2926&#xd7;(x)/100&#x2212;8.113&#xd7;(y)/100+2.3384&#x2264;2.400, condition (2): (y)&#x2265;7.0, and condition (3): ((y)/(x))&#x2265;0.5. The vapor film-rupturing agent is capable of preparing a thermal treatment oil composition having a high vapor film-rupturing effect with a characteristic number of seconds in the cooling capability test according to JIS K2242 (2012) of 2.50 seconds or less.

Vapor film-rupturing agent, and thermal treatment oil composition

Provided are a polymer compound, which comprises a copolymer containing at least a unit B, and a unit A and/or a unit C referring to repeating units A, B and C, and which has a weight-average molecular weight of from 50,000 to 1,500,000; a material for electronic devices and a material for organic electroluminescent devices comprising the compound; an organic electroluminescent device having an anode, a cathode and an organic thin film layer, wherein at least one organic thin film layer contains the polymer compound; a coating liquid containing the polymer compound and a solvent; and a method for producing an organic electroluminescent device using the coating liquid. Also provided is a polymer compound suitable to a coating method; a material for electronic devices and a material for organic electroluminescent devices comprising the compound; and an organic EL device, a coating liquid and a method for producing an organic EL device using the compound.

Polymer compound, material for electronic elements, material for organic electroluminescent elements, and organic electroluminescent element

A polymer including a structural unit represented by the following formula (A). In the formula (A), P is independently a group represented by the following formula (P), a is an integer of 2 to 5, and b is an integer of 0 to 5. In the formula (P), A is independently a nitrogen atom or CR; X is a single bond, O, S, C(R)or NR. R is independently a hydrogen atom, a substituted or unsubstituted alkyl group including 1 to 20 carbon atoms or the like, or a single bond used for bonding to another P or L, provided that at least one R contained in (P)a is represented by any one of the following formulas (3) to (7). 

Carbazole-based polymer and organic electroluminescence element using same

A polymer including structural units represented by the following formulas (A) and (B). In the formula (A), P is a group derived from a compound represented by the formula (P). Lis a linkage group. In the formula (B), Q is a group derived from a compound represented by the formula (Q). Lis a linkage group. In the formula (B), at least one of 'c'Qs and 'd'Ls includes a cross-linkable group. 

Cross-linking polymer and organic electroluminescent element using same

Provided are a copolymer having plural repeating units each having a specific structure, and having a weight-average molecular weight of from 100,000 to 3,000,000; a material for organic electronic devices and a material for organic electroluminescent devices containing the copolymer; a solution containing the copolymer and a solvent; and an organic electroluminescent device using the material for organic electroluminescent devices. The copolymer has not only charge transporting properties but also solubility and is suitable for forming a film according to a coating method. The present invention provides the copolymer, and a material for organic electronic devices and a material for organic electroluminescent devices containing the copolymer, an organic electroluminescent device, and a solution containing the copolymer.

Copolymer, material for organic electronic element, material for organic electroluminescent element, and organic electroluminescent element

An aromatic amine derivative represented by the following formula (1), wherein L is a linking group, Z is a group represented by the following formula (2) and Aand Aare independently a monovalent group represented by the following formula (3): 

Aromatic amine derivative, organic device material and hole-injection/transport material and organic electroluminescent element material each comprising the derivative, and organic electroluminescent element

A compound represented by the following formula (1): wherein in the formula, Lis a single bond or a linking group, A is a group represented by the following formula (A), B is a group represented by the following formula (B), m is an integer of 1 to 3, and n is an integer of 1 to 4. 

Compound and organic electroluminescent element produced using same

A polymerizable monomer represented by the following formula (1) wherein at least one of Arto Aris substituted by a group represented by the following formula (2) and which is substituted by one or more groups comprising a polymerizable functional group. Arto Arare a substituted or unsubstituted aryl group having 6 to 40 ring carbon atoms, Aris a substituted or unsubstituted aryl group having 6 to 40 ring carbon atoms and Arand Arare a substituted or unsubstituted arylene group having 6 to 40 ring carbon atoms. 

Polymerizable monomer, and material for organic device, hole injection/transport material, material for organic electroluminescence element and organic electroluminescent element each comprising polymer (polymeric compound) of the polymerizable monomer

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Sodegaura, Japan

Akinori Yomogita