Idemitsu Kosan Company, Limited

Takenori Fujimura

Yutaka Minami

Masami Kanamaru

Masanori Sera

Shuji Machida

Ryo Aburatani

Takuji Okamoto

Tomoaki Takebe

Tomio Tatsumi

Akio Nodera

Tatsuya Egawa

Yusuke Hayata

Minoru Yabukami

Harumi Nakashima

Shinichi Nakamura

Iwao Akiba

The invention provides a polymerization catalyst produced by bringing components (A) to (D) into contact with one another in a hydrocarbon solvent at 30 to 60&#xb0; C., wherein the component (A) is a transition metal compound, the component (B) is a solid boron compound capable of forming an ion pair with component (A), the component (C) is an organoaluminum compound, and the component (D) is one or more unsaturated hydrocarbon compounds selected from among an &#x3b1;-olefin, an internal olefin, and a polyene; and the amounts of component (B) and component (C) are 1.2 to 4.0 mol and 5.0 to 50.0 mol, respectively, on the basis of 1 mol of component (A), which catalyst exhibits high activity and can be readily supplied to a polymerization reaction system. The invention also provides a method of storing the polymerization catalyst at 0 to 35&#xb0; C.

Polymerization catalysts and method for preservation of same

A terminally unsaturated polyolefin satisfying the following (1) to (4):

Terminally unsaturated polyolefin and method for producing the same

An aqueous dispersion containing a graft copolymer satisfying (a) to (e) and water: (a) a graft rate is 1 to 150% by mass, (b) a weight average molecular weight is 500 to 400000, (c) a molecular weight distribution is 1.5 to 4, (d) a main chain containing a monomer unit having a hydrophilic group and (e) an &#x3b1;-olefin homopolymerization or &#x3b1;-olefin/ethylene copolymerization side chain, wherein a mesopentad ratio [mmmm] of the polymerization chain is 30 to 80 mole %.

Aqueous dispersion containing polyolefin graft copolymer

A graft copolymer satisfying (a) to (e): (a) a main chain derived from one or more monomers selected from (I) an acrylic acid, (II) a methacrylic acid, (III) a vinyl ester, (IV) a styrene and (V) a vinyl group-containing silane compound, at least one kind of the monomer having a crosslinkable functional group, (b) a side chain derived from a reactive homopolymer &#x3b1;-olefin having a meso pentad fraction (mmmm) of from 30 to 80% by mol or a copolymer of 50% by mass or more of at least one &#x3b1;-olefin, (c) a graft ratio of from 1 to 150% by mass, (d) a weight average molecular weight of from 500 to 400,000, and (e) a molecular weight distribution (Mw/Mn) of from 1.5 to 4.

Polyolefin graft copolymer and adhesive composition

Provided is a production process for a graft copolymer or a thermoplastic resin composition containing the above graft copolymer, which comprises graft-polymerizing 100 parts by mass of a combination of 20 to 100% by mass of a reactive polyolefin and 0 to 80% by mass of a polyolefin other than the reactive polyolefin with 0.2 to 300 parts by mass of at least one specific monomer under the presence of a radical initiator and which is useful as a sealant, a modifier for polyolefins, a surface treating agent, a primer treating agent, a coating agent component and the like.

Graft copolymer, thermoplastic resin composition comprising the graft copolymer, and those production method

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

The present invention provides a resin composition including 100 parts by mass of a resin component containing 80 to 99 mass % of a thermoplastic resin (A) and 20 to 1 mass % of a side-chain crystalline polymer (B), and 0.1 to 30 parts by mass of carbon nanotube (C). The composition has a stabilized thermoplastic resin/side-chain crystalline polymer phase structure, is free from laminar peeling, and is excellent in conductive (antistatic) property, solvent resistance, flow characteristics, flame retardancy, impact resistance, molding appearance, etc.

Resin composition, process for producing the same and molding of the resin composition

The present invention relates to a heat storage material composition comprising 20 to 100% by weight of a heat storage material, 80 to 0% by weight of crystalline polyolefin (B) and 50 to 0% by weight of an elastomer (C), and the heat storage material described above contains a side chain-crystalline polymer (A), wherein the heat storage material described above comprises preferably a higher &#x3b1;-olefin polymer (a) containing 50 mole % or more of higher &#x3b1;-olefin having 10 or more carbon atoms and a petroleum wax (b) in which a melting point (Tm) is higher by 10&#xb0; C. or more than that of the polymer (a). Provided is a heat storage material composition which has less bleeding and stickiness and is excellent in stability at high temperature and which can meet a change in temperature such as a difference in room temperature when applied to a material for floor heating and can avoid a heating state deviated to high temperature or low temperature.

Heat-storage material composition

The present invention relates to a method for producing a modified propylene-based polymer containing modifying a propylene-based polymer by a radical initiator and an organic acid, a modified propylene-based polymer obtained by the method, and an adhesive composition containing the modified propylene-based polymer. The propylene-based polymer is a propylene homopolymer satisfying the conditions of (a) mmmm=20 to 60 mol %, (b) [rrrr/(1-mmmm)]&#x2266;0.1, (c) rmrm&#x3e;2.5 mol %, (d) mmxrr/(mr)&#x2266;2.0, and (e) the weight ratio (W25) of components eluted at 25&#xb0; C. or lower in a temperature programmed chromatography is 20 to 100% by weight, or a propylene copolymer satisfying the condition of (h) the stereoregularity index (P) obtained byC-NMR measurement is 55 to 90 mol %. The modified propylene-based polymer of the invention can make a polyolefin, etc. more adhesive, stronger, or flexible, to be useful for a high-adhesive sealant or an polyolefin with increased compatibility to an inorganic filler, etc., particularly as a resin for a hot-melt adhesive.

Process for production of modified propylene polymers and modified propylene polymers produced by the process

A crystalline higher &#x3b1;-olefin polymer which is obtained from a Cor more &#x3b1;-olefin and satisfies either (1) the melting point (Tm) as measured with a differential scanning calorimeter (DSC) is 20 to 100&#xb0; C. or (2) in an examination of spin-lattice relaxation time (T) by solid NMR analysis, a single Tis observed at the temperatures not lower than the melting point; and a process for producing the &#x3b1;-olefin polymer with a specific metallocene catalyst. The crystalline higher &#x3b1;-olefin polymer is excellent in low-temperature characteristics, rigidity, heat resistance, compatibility with lubricating oils, mixability with inorganic fillers, and secondary processability.

Crystalline polymer of higher &#x3b1;-olefin and process for producing the same

The present invention provides a crystalline higher &#x3b1;-olefin copolymer obtained by copolymerizing at least two higher &#x3b1;-olefins having 10 or more carbon atoms or at least one higher &#x3b1;-olefin having 10 or more carbon atoms with at least one other olefin, wherein it satisfies certain conditions.

Growing community of inventors

Chiba, Japan

Takenori Fujimura