Idemitsu Kosan Company, Limited

Idemitsu Petrochemical Co., Ltd.

Takuji Okamoto

Takashi Kashiwamura

Yutaka Minami

Masami Watanabe

Noriyuki Tani

Masami Kanamaru

Kiyohiko Yokota

Hideo Funabashi

Tsuyoshi Ota

Yasushi Seta

Junichi Matsumoto

Yasuhiro Mogi

Nobuhiro Yabunouchi

Hiroshi Maezawa

Masato Kijima

Koji Kakigami

Haruhito Sato

Takenori Fujimura

Tetsuya Inoue

Masahiko Kuramoto

Nobuhide Ishihara

Yasushi Shiraki

Mitsugu Kanzawa

Nozomu Fujii

Minoru Yabukami

Shinjiro Fujikawa

A polypropylene-based adhesive containing a polypropylene-based resin (A') prepared by reducing the weight-average molecular weight of a polypropylene-based resin (A) by decomposition, in which the melting endotherm (ΔH-D) of the polypropylene-based resin (A) is 0 J/g or more and 80 J/g or less, as obtained from a melting endothermic curve drawn by holding a sample at −10° C. for 5 minutes in a nitrogen atmosphere followed by heating it at 10° C./min using a differential scanning calorimeter (DSC).

Polypropylene-based adhesive and method for producing same

A transition metal compound from Periodic Table Group 3 to 10 or lanthanide, of formula (I): In formula (I), Aand Aare independently a crosslinker of formula (II) X is a &#x3c3; or &#x3c0;-bonding ligand, and plural Xs may differ; Y is a Lewis base, and plural Ys may differ and/or crosslink with Y or X; q is an integer from 1 to 5, representing [(valence of M)&#x2212;2]; r is an integer from 0 to 3; M is a metal from Group 3 to 10 or a lanthanide; n and m are independently an integer from 0 to 4; and plural Rs may differ. In formula (II), E is C, Si, Ge, or Sn; Rand Rare independently a H, a halogen, or a C1 to C20 hydrocarbon, optionally halogenated, and may bond together to form a ring, and e is an integer from 1 to 4.

Transition metal compound and method for producing olefin polymer

Provided is a production process for &#x3b1;-olefin which does not comply the Shultz-Flory distribution and which is excellent in the yields of &#x3b1;-olefins of 1-hexene up to 1-tetradecene each having 6 to 14 carbon atoms, particularly a yield of 1-octene. The above production process is characterized by polymerizing ethylene using (A) a specific chromium compound, (B) a specific aminophosphine ligand compound and (C) a promoter.

Method for producing &#x3b1;-olefin

A method for producing an anionized meso-form double-cross-linked ligand represented by formula (3), including: bringing a compound represented by formula (1) into contact with a compound represented by formula (2) at &#x2212;25&#xb0; C. or less; and introducing an anionizing agent within 5 hours after the contact, wherein Rto Rare independently a hydrogen atom, a hydrocarbon group having 1 to 20 carbon atoms, or the like; A and A' are independently a cross-linking group containing an atom belonging to the 14group of the periodic table; M and M&#x2032; are independently an atom belonging to the 1or the 2group of the periodic table. 

Process for production of meso-form and racemic form metallocene complexes

A highly crystalline higher &#x3b1;-olefin polymer that is excellent in compatibility with a thermoplastic resin, particularly a polyolefin, compatibility with a lubricant oil, a fuel oil and wax, mixing property with an inorganic filler, and secondary working property, and a process for production thereof are provided. The highly crystalline higher &#x3b1;-olefin polymer is obtained by polymerizing a monomer containing 80% by mol or more of a higher &#x3b1;-olefin having from 22 to 40 carbon atoms, and satisfies the following items (1) and (2). (1) The melting point (Tm), which is observed, by using a differential scanning calorimeter (DSC), from a melting endothermic curve obtained by maintaining a specimen at 190&#xb0; C. for 5 minutes under a nitrogen atmosphere, cooling the specimen to &#x2212;10&#xb0; C. at a rate of 5&#xb0; C./min, maintaining at &#x2212;10&#xb0; C. for 5 minutes, and then elevating a temperature thereof to 190&#xb0; C. at a rate of 10&#xb0; C./min, is from 55 to 100&#xb0; C. (2) Standards weight average molecular weight (Mw) measured by a gel permeation chromatography (GPC) based on polystyrene is from 1,000 to 5,000,000, and the molecular weight distribution (Mw/Mn) measured thereby is 5.0 or less.

Highly crystalline higher &#x3b1;-olefin polymer and process for production thereof

Provided is an &#x3b1;-olefin polymer having an excellent balance between a molecular weight and a melting point, which is a polymer of one or more kinds of &#x3b1;-olefins having 20 to 40 carbon atoms, and which meets the following requirements (1) to (4): (1) the &#x3b1;-olefin polymer has a molecular weight distribution (Mw/Mn) determined from its weight average molecular weight (Mw) and number average molecular weight (Mn) in terms of polystyrene measured by a GPC method of 2 or less, and has an Mw of 5,000 or less; (2) measurement of a melting point (Tm) of the &#x3b1;-olefin polymer with DSC shows one melting peak, a melting heat absorption (AH) calculated from an area of the melting peak is 20 J/g or more, and the melting peak has a half value width of 10&#xb0; C. or less; (3) when the Mw falls within a range of 1,000 to 5,000 and an average number of carbon atoms (Cn) of the &#x3b1;-olefins falls within a range of 20 to 40, the Mw, the Cn, and the Tm measured with the DSC satisfy the relationship, 0.0025&#xd7;Mw+(Cn&#xd7;3.3812&#x2212;29.5)&#x2266;Tm&#x2266;0.0025&#xd7;Mw+((Cn+1)&#xd7;3.3812&#x2212;29.5); and (4) a stereoregularity index [M] derived from a chain of the &#x3b1;-olefins each having 20 to 40 carbon atoms is 20% by mol or more.

&#x3b1;-Olefin polymer and process for production thereof

Disclosed is a method for producing an unsaturated hydrocarbon compound wherein an &#x3b1;-olefin is dimerized by using a catalyst system composed of a metallocene compound (A) and an oxygen-containing organometallic compound modified with a halogen-containing compound (B). By this method, an unsaturated hydrocarbon compound having unsaturated double bonds in a high ratio, in particular the one having a terminal vinylidene group can be produced efficiently.

Process for producing unsaturated hydrocarbon compound

Provided are a novel compound which improves the solubility of any one of various lubricating oil additives when used as base oil, in particular, a base oil component in a lubricating oil composition, and is capable of realizing low viscosity/low volatility characteristics that have not been achieved in PAO compositions to which conventional additives are added, and a method for producing the compound. Disclosed is 2-alkyl-4,4-dialkyl-1,3-dioxolane having a structure represented by the general formula (I) below: wherein Rto Reach independently represent an alkyl group having 1 to 30 carbon atoms. 

Dioxolane derivative and method for producing same

A propylenic polymer according to the present invention or a composition thereof have an excellent melt flowability and contains a less amount of stickiness-causing components, and also has a low modulus and is pliable, and is capable of providing a transparent molded article, thus being useful as a substitute for a pliable vinyl chloride resin. In addition, a molded article made therefrom exhibits an excellent heat seal performance at a low temperature, and is excellent in terms of transparency and rigidity. Specifically, it has an isotactic pentad fraction (mmmm), which indicates a stereoregulariry, of 30 to 80%, a molecular weight distribution (Mw/Mn) of 3.5 or less and an intrinsic viscosity [&#x3b7;] of 0.8 to 5 dl/g.

Propylene polymer and composition containing the same, molded object and laminate comprising these, and processes for producing propylene polymer and composition containing the same

A transition metal compound useful as a component of a catalyst for olefin polymerization and a highly active polymerization catalyst capable of producing a high molecular weight olefin polymer. The catalyst for olefin polymerization contains a transition metal compound represented by formula (1) wherein M is a metal element of the groups 3 to 10 of the Periodic Table or a lanthanoid; X represents a ligand having a sigma bond for binding to M, and when X is plural, the Xs may be the same or different; Y represents a Lewis base, and when Y is plural, the Ys may be the same or different; Aand Arepresent crosslinking groups and at least one thereof has a boron or phosphorous atom as a crosslinking atom; q is an integer of 1 to 5 and equals [(the valance of M)&#x2212;2]; r is an integer of 0 to 3; and Qand Qhave a specific structure, and Qand Qmay be different or the same.

Transition metal compound and catalyst for olefin polymerization

A carbonyl compound represented by the following formula [1], wherein X is hydrogen, a hydroxy group, an alkoxy group or a group derived from a polyol, and n, which is the same in each instance, is 4 to 30. Compositions comprising the compound, and method for making the compound.

Carbonyl compound containing long-chain branched alkyl group

The propylene polymer of the present invention satisfies (1) a 25&#xb0; C. hexane soluble content (H25) of 0-80 wt %; and (2) either no melting temperature (Tm) measurable by differential scanning calorimetry (DSC), or a melting temperature (Tm) satisfying, if measurable by DSC, the following relationship: &#x394;H&#x2267;3&#xd7;(Tm&#x2212;120) wherein &#x394;H is a melting endotherm (J/g). The propylene homopolymer of the present invention satisfies (1) a meso pentad fraction (mmmm) of 30-60 mol %; (2) a racemic pentad fraction (rrrr) satisfying the following relationship: [rrrr/(1&#x2212;mmmm)]&#x2266;0.1; (3) a fraction (W25) eluted at a temperatures up to 25&#xb0; C. by temperature-programmed chromatography, of from 20-100 wt %; and, (4) a pentad fraction (rmrm) of more than 2.5 mol %. The propylene copolymer of the present invention satisfies (1) a stereoregularity index (P) of 55-90 mol % as determined byC-NMR measurement; and (2) a fraction (W25) eluted at a temperatures up to 25&#xb0; C. by temperature-programmed chromatography, of from 20-100 wt %.

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Ichihara, Japan

Takuji Okamoto