Idemitsu Kosan Company, Limited

Idemitsu Petrochemical Co., Ltd.

Kiyokazu Katayama

Takanori Sadashima

Tsuyoshi Ota

Toshio Isozaki

Hideaki Noda

Yasunori Kadoi

Kiyohiko Yokota

Shojiro Tanase

Takehito Konakazawa

Nobuhiro Yabunouchi

Kenji Tanaka

Takeshi Iwasaki

Narinobu Kagami

Kanako Samejima

Hitomi Shimizu

Tadanori Jyunke

Naoyuki Ueda

Kouta Oba

Yuji Komuro

A lubricating oil composition containing a poly-α-olefin and an antioxidant, in which an evaporation loss by the Noack method is 4.9% by mass or less, a kinematic viscosity at 100° C. is 6.5 mm/sec or less, and an amount of the antioxidant with respect to the poly-α-olefin is 0.05% by mass or more.

Lubricant composition

A saturated aliphatic hydrocarbon compound composition having an evaporation loss of 4% by mass or less as determined by the Noack method, a kinetic viscosity at 100° C. of 6.5 mm2/s or less, and an average carbon number of 36 to 44. A lubricating oil composition may contain such a saturated aliphatic hydrocarbon compound composition. A method for producing a saturated aliphatic hydrocarbon compound composition, may include: (1) oligomerizing an olefin to obtain an olefin oligomer; (2) isomerizing the olefin oligomer to obtain an isomer; and (3) hydrogenating the isomer.

Saturated aliphatic hydrocarbon compound composition, lubricant composition, and method for producing saturated aliphatic hydrocarbon compound composition

Provided is a method for producing an &#x3b1;-olefin polymer, comprising the step of polymerizing one or more kinds of &#x3b1;-olefins each having 3 to 30 carbon atoms with a polymerization catalyst obtained by using: (A) a metallocene compound; (B) an ionic compound capable of reacting with the metallocene compound to transform the compound into a cation; (C) an organometallic compound; and (D) one or more kinds of compounds selected from the group consisting of (d-1) an alcohol, (d-2) a phenol, and (d-3) an ether compound, the catalyst having a ratio between the component (A) and the component (D) of from 10:1 to 1:100 in terms of a molar ratio, and having a ratio of the component (D) to the component (C) of less than 1 in terms of a molar ratio.

Methods for producing &#x3b1;-olefin polymer and hydrogenated &#x3b1;-olefin polymer

Provided is a method of producing an &#x3b1;-olefin polymer including a step of polymerizing one or more kinds of &#x3b1;-olefins each having 6 to 20 carbon atoms with a catalyst obtained by using a specific transition metal compound. By the method, an &#x3b1;-olefin polymer having a viscosity suitable for use in a lubricating oil can be produced on an industrial scale with ease, and further, the characteristics of the product can be widely changed through the control of reaction conditions.

Process for producing &#x3b1;-olefin polymer, &#x3b1;-olefin polymer, and lubricating oil composition

A magnesium compound obtainable by reacting metal magnesium, ethanol, an alcohol having from 3 to 10 carbon atoms and a halogen and/or a halogen-containing compound containing at least 0.0001 gram atom of a halogen atom relative to one gram atom of the metal magnesium at 0 to 70&#xb0; C., which comprises composition represented by the formula (I), and which has a particle diameter Dcorresponding to 50% of cumulative weight fraction of from 4 to 20 &#x3bc;m and a particle size distribution index (P) of P&#x3c;4.0:Mg(OCH)(OR)&#x2003;&#x2003;(I)where n is a numerical value satisfying 0&#x3c;n&#x3c;0.35, Ris CH, and m is an integer of from 3 to 10.

Magnesium compound, solid catalyst component, catalyst for ethylene polymerization and method of producing ethylene polymer

A magnesium compound represented by the formula (I):Mg(OCH)(OR)&#x2003;&#x2003;(I)where Ris CH(where m is an integer of from 3 to 10), and n is a numerical value satisfying 0&#x3c;n&#x3c;0.35; a solid catalyst component for olefin polymer using the magnesium compound; a catalyst for olefin polymer; and methods of producing olefin copolymers such as a propylene-based random copolymer and propylene-based block copolymer by using the catalyst for olefin polymer.

Magnesium compound, catalyst for olefin polymerization and method for producing olefin polymer

A method of producing a magnesium compound by reacting the following components (i), (ii) and (iii):

Magnesium compound, solid catalyst component, olefin polymerization catalyst, and method for producing olefin polymer

An &#x3b1;-olefin polymer having extremely high stereoregularity, exhibiting excellent fluidity and containing a decreased amount of catalyst residues in the polymer can be obtained industrially advantageously in accordance with a process for producing an &#x3b1;-olefin polymer which comprises homopolymerizing an &#x3b1;-olefin or copolymerizing two or more &#x3b1;-olefins in the presence of (A) a solid catalyst component comprising magnesium, titanium and a halogen, (B) an organoaluminum compound having a content of hydroaluminum compounds of 0.1% by weight or smaller and (C) an organozinc compound. A block copolymer of propylene comprising a homopolymer portion exhibiting high fluidity and a copolymer portion having a high molecular weight can be obtained in accordance with a process for producing a block copolymer of propylene which comprises polymerizing propylene in the presence of (A) a solid catalyst component comprising a titanium compound and an electron-donating agent, (B) an organoaluminum compound and (C) an organozinc compound to produce crystalline polypropylene and copolymerizing propylene and at least one of ethylene and &#x3b1;-olefins having 4 or more carbon atoms in the presence of the produced crystalline polypropylene.

Process for producing &#x3b1;-olefin polymer

Provided are a catalyst for olefin polymer production, which contains an organosilicon compound having a specific structure and with which olefin polymers produced have increased stereospecificity and increased melt fluidity; and a method for producing such olefin polymers.

Organosilicon compound, catalyst for olefin polymer production, and method for producing olefin polymer

Solid catalyst component for olefin polymerization, catalyst for olefin polymerization, and method for producing olefin polymers

Solid catalyst components for the polymerization of olefins, comprising titanium, magnesium and a compound of general formula (I), wherein R,and R,may be the same or different and each represents a linear or branched hydrocarbon group having 1 to 20 carbon atoms, and n is an integer of 1 to 10, as an electron donor, which are combined with organoaluminum compounds to form polymerization catalysts for the production of olefin polymers. This electron donor has no problems of safety and hygiene, and is inexpensive and easily synthesized. This compound can provide highly active and highly stereoregular solid catalyst components for the polymerization of olefins, catalysts for the polymerization of olefins, and processes for producing olefin polymers.

Solid catalyst components for olefin polymerization, catalysts for olefin polymerization and process for producing olefin polymers

Provided are a solid catalyst component for olefin polymerization and a catalyst comprising the component for olefin polymerization, in which the electron donor is free from the problem of lacking in safety and sanitation, and is inexpensive and easy to produce, and which exhibit high activity in producing olefin polymers with high stereospecificity, and also a method for producing olefin polymers in the presence of the catalyst. The solid catalyst component comprises titanium, magnesium and an electron donor compound of formula (I):

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Ichihara, Japan

Kiyokazu Katayama