Patent application number | Description | Published |
20090018288 | CROSSLINKED OLEFIN POLYMERS AND PROCESS FOR PRODUCTION THEREOF - Crosslinked olefin polymers which are reduced in stickiness and improved in rigidity, heat resistance, light resistance, and water resistance while retaining the molding properties such as injection moldability, spinnability, film-forming properties and the physical properties such as toughness (including elongation and break strength) and tackiness; and a process for the production thereof. Crosslinked olefin polymers which are obtained by reacting an α-olefin polymer produced by polymerization of at least one α-olefin having 6 or more carbon atoms or polymerization of at least one α-olefin having 6 or more carbon atoms with at least one other α-olefin with a crosslinking agent and which satisfy the following requirements: (1) the content of units of α-olefins having 6 or more carbon atoms is 50 mol % or more, (2) the molecular weight distribution (Mw/Mn) as determined by gel permeation chromatography (GPC) is 7.0 or more in terms of polystyrene, (3) the content of components having weight-average molecular weights (Mw) of 10 | 01-15-2009 |
20090023857 | WATER-DISPERSIBLE RESIN COMPOSITION AND WATER-DISPERSIBLE POLYOLEFIN RESIN COMPOSITION - A water dispersible resin composition capable of forming a flat and smooth coating film with a solidified surface upon application to a base material and excellent in storage stability is provided. It is a water dispersible resin composition comprising 0.01 to 5 parts by mass of a surfactant (C) relative to 100 parts by mass of a combination of 5 to 70% by mass of a side-chain crystalline resin (A) with 95 to 30% by mass of water (B) as well as a water dispersible polyolefin-based resin composition comprising a combination of 5 to 80% by mass of a modified side-chain crystalline polyolefin-based resin with 95 to 20% by mass of water, in which for example, a side-chain crystalline olefin-based polymer (G) obtained by polymerization of one kind or more of higher α-olefins having 10 or more carbon atoms is modified with a radical initiator and an organic acid, organic acid anhydride or organic acid ester. | 01-22-2009 |
20090082521 | WATER-DISPERSIBLE POLYOLEFIN RESIN COMPOSITION - Provided is a water dispersible polyolefin resin composition which is capable of forming a coating film having a smooth solidified surface when applied onto a substrate and which has excellent storage stability. The water dispersible polyolefin resin composition contains (C) a surfactant, (D) a water-soluble polymeric compound and (E) a water-insoluble organic solvent in amounts of 0.01 to 1.00 part by mass, 0.01 to 1.00 part by mass and 2 to 200 parts by mass, respectively, per 100 parts by mass of a combination of 5 to 70% by mass of (A) a poly(1-butene) resin having (i) a mesopentad fraction [mmmm] of 20 to 80 mole % and (ii) a weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) of 10,000 to 1,000,000 or 5 to 70% by mass of (A′) polypropylene resin having (i) a mesopentad fraction [mmmm] of 20 to 60 mole % and (ii) an intrinsic viscosity [η] measured at 135° C. in tetralin of 0.1 to 15 dl/g with 95 to 30% by mass of (B) water. | 03-26-2009 |
20090082532 | MODIFIED ALPHA-OLEFIN POLYMER AND PROCESS FOR PRODUCTION OF CROSS-LINKED PRODUCT THEREOF - The present invention provides a modified α-olefin polymer obtained by reacting (i) an α-olefin polymer obtained by homopolymerization or copolymerization of one kind or two kinds or more of an α-olefin having 3 or more carbon atoms and having (1) a mesopentad fraction of 40 to 75 mol % or a stereo-regularity index M4 of 75 mol % or less, (2) a molecular weight distribution converted to polystyrene equivalent of 3.0 or less determined by a GPC method and (3) an intrinsic viscosity [η] (in tetralin, at 135° C.) of 0.01 to 5.0 dL/g, (ii) a radical initiator and (iii) a monomer having a silane group and an ethylenic unsaturated group or silane coupling agent as well as a process for production of a cross-linked product of the modified α-olefin polymer. The modified α-olefin polymer in the present invention has appropriate molecular weight distribution and composition distribution, is good in low temperature coating performance required for a reactive hot melt adhesive because of low melting temperature, has high reactivity, compatibility and adhesiveness as compared to conventional unmodified α-olefin polymers, and also it generates no decomposed gas because of a polyolefin-based material and has good adhesiveness to polyolefins. | 03-26-2009 |
20090240016 | HIGHLY CRYSTALLINE HIGHER ALPHA-OLEFIN POLYMER AND PROCESS FOR PRODUCTION THEREOF - A highly crystalline higher α-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 α-olefin polymer is obtained by polymerizing a monomer containing 80% by mol or more of a higher α-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° C. for 5 minutes under a nitrogen atmosphere, cooling the specimen to −10° C. at a rate of 5° C./min, maintaining at −10° C. for 5 minutes, and then elevating a temperature thereof to 190° C. at a rate of 10° C./min, is from 55 to 100° 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. | 09-24-2009 |
20090270570 | METHOD FOR PRODUCING POLYOLEFIN AND CATALYST COMPONENT USED FOR PRODUCTION OF POLYOLEFIN - Provided is a method of commercially advantageously producing a high-quality polyolefin with high yield in a homogeneous system in the presence of a catalyst containing a transition metal compound as a main catalyst component. A method of producing a polyolefin includes polymerizing one or more substances selected from ethylene and a-olefins having 3 to 30 carbon atoms in a saturated hydrocarbon solvent in the presence of a catalyst containing a catalyst component (A) composed of a transition metal compound of Group IV of the periodic table, and a catalyst component (B) composed of an organic aluminoxane, in which the component (B) is obtained by subjecting an organic aluminoxane, which is soluble in a saturated hydrocarbon solvent, to a contact treatment with an organic aluminum compound having an alkyl group with 1 to 10 carbon atoms in advance in the saturated hydrocarbon solvent. | 10-29-2009 |
20100036066 | ALPHA-OLEFIN POLYMER AND PROCESS FOR PRODUCTION THEREOF - Provided is an α-olefin polymer having an excellent balance between a molecular weight and a melting point, which is a polymer of one or more kinds of α-olefins having 20 to 40 carbon atoms, and which meets the following requirements (1) to (4): (1) the α-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 α-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° 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 α-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×Mw+(Cn×3.3812−29.5)≦Tm≦0.0025×Mw+((Cn+1)×3.3812−29.5); and (4) a stereoregularity index [M | 02-11-2010 |
20100190405 | ELASTIC NONWOVEN FABRIC, PROCESS FOR PRODUCING THE SAME, AND TEXTILE PRODUCT COMPRISING THE ELASTIC NONWOVEN FABRIC - (1) An elastic nonwoven fabric and a fiber product using the elastic nonwoven fabric, the elastic nonwoven fabric containing a crystalline resin composition containing low crystalline polypropylene and high crystalline polypropylene, the low crystalline polypropylene satisfying items (a) and (b) below, and a crystallization temperature (Tc) of the crystalline resin composition measured with a differential scanning calorimeter (DSC) being from 20 to 100° C.: | 07-29-2010 |
20100324242 | HIGHLY PURE, TERMINAL-UNSATURATED OLEFIN POLYMER AND PROCESS FOR PRODUCTION THEREOF - Provided are a highly-pure, terminal-unsaturated olefin polymer which is produced through homopolymerization or copolymerization of one or more α-olefins having from 3 to 28 carbon atoms, or copolymerization of at least one α-olefin having from 3 to 28 carbon atoms and ethylene, in the presence of a catalyst, and which satisfies the following (1) to (4); and a method of efficiently producing the olefin polymer having a high degree of terminal unsaturation degree and containing little catalyst residue.
| 12-23-2010 |
20110236683 | METHOD FOR PRODUCING POLYPROPYLENE ELASTIC FIBER AND POLYPROPYLENE ELASTIC FIBER - Provided are a method of producing an elastic fiber, including the steps of: subjecting a raw material to melt extrusion with a spinning nozzle at 100 to 300° C.; cooling the fiber after the melt extrusion in a water bath at 0 to 50° C.; and winding the cooled fiber, in which a specific low-crystalline polypropylene is used as the raw material, and an elastic fiber having a core-sheath bicomponent structure, which is obtained by using a specific low-crystalline polypropylene. | 09-29-2011 |
20120095273 | ALPHA-OLEFIN OLIGOMER AND METHOD FOR PRODUCING SAME - Disclosed are an α-olefin oligomer including 90 mol % or more of an α-olefin unit having 6 or more carbon atoms and having a small amount of a dimer component, in which a mass ratio of a dimer, a trimer and a tetramer is specified and which does not follow the Schulz-Flory distribution, and a process for producing the same. | 04-19-2012 |
20120208422 | SPUN-BONDED NONWOVEN FABRIC AND FIBER PRODUCT - The present invention provides a spunbond nonwoven fabric made of a specific crystalline resin composition having a melt flow rate of 25 to 80 g/10 min and a melting endotherm ΔH of 65 to 100 J/g. More particularly, the invention provides a polypropylene spunbond nonwoven fabric having a very small fiber diameter and providing an excellent feel to the touch, and a polypropylene spunbond nonwoven fabric exhibiting high softness. | 08-16-2012 |
20120302982 | NON-WOVEN POLYPROPYLENE FABRIC - Provided is a non-woven fabric produced by using a polypropylene-based resin composition containing a specific low-crystalline polypropylene. The non-woven fabric is a non-woven fabric obtained by achieving reductions in denier values of fibers, the non-woven fabric being excellent in dispersibility of the fibers. | 11-29-2012 |
20120322330 | ELASTIC NONWOVEN CLOTH AND FIBER PRODUCT - To provide an elastic nonwoven cloth that is excellent in elastic recovery property and has pleasant texture without stickiness, and a fiber product using the elastic nonwoven cloth, by an elastic nonwoven cloth containing fibers that are spun at a spinning speed of from 500 to 2,500 m/min and contain a low crystalline polypropylene that satisfies (a) [mmmm]=20 to 60% by mol, (b) [rrrr]/(1−[mmmm])≦0.1, (c) [rmrm]>2.5% by mol, (d) [mm]×[rr]/[mr] | 12-20-2012 |
20130102745 | CATALYST COMPOSITION AND PROCESS FOR PRODUCTION OF OLEFIN POLYMERS USING THE CATALYST COMPOSITION - The present invention provides a catalyst composition and a method for producing an olefin polymer using the catalyst composition. The catalyst composition is prepared by bringing (A) a transition metal compound, (B) a solid boron compound capable of forming an ion pair with the component (A), (C) an organometallic compound and (D) a compound represented by the following general formula (XIV) and/or the following general formula (XV) into contact with each other in a hydrocarbon solvent, and enables a high catalyst concentration. | 04-25-2013 |
20130309931 | METHOD FOR PRODUCING SPUN-BONDED NONWOVEN FABRIC AND SPUN-BONDED NONWOVEN FABRIC - The method of producing a spunbond nonwoven fabric promotes the bleed out of the additive, which has pleasant texture such as tactile feel and excellent flexibility. The spunbond nonwoven fabric is obtained by this method. Specifically, (1) the method of producing a spunbond nonwoven fabric includes annealing a spunbond nonwoven fabric formed by using a crystalline resin composition (I) containing a low crystalline olefin polymer (a) with an elastic modulus of 10 to 450 MPa in a content of 1 to 50% by mass, a high crystalline olefin polymer (b) with an elastic modulus of 500 to 2,000 MPa, the content of the component (b) being the rest, and an additive (c) in a content of 1 to 20,000 ppm by mass. Furthermore, (2) the method of producing a spunbond nonwoven fabric includes annealing a spunbond nonwoven fabric formed by using a core-sheath composite fiber containing a crystalline resin composition (I) as the sheath component; and a crystalline resin composition (II) as the core component containing a high crystalline olefin polymer (b′) with an elastic modulus of 500 to 2,000 MPa. | 11-21-2013 |
20130323995 | NONWOVEN FABRIC AND TEXTILE PRODUCT - The nonwoven fabric has excellent secondary fabrication properties, specially, low temperature heat-sealing properties. The textile product is formed by using the nonwoven fabric. More specifically, the nonwoven fabric includes one or more layers, wherein the nonwoven fabric made of one layer, or at least one layer of the nonwoven fabric composed of two layers, or at least one layer of the two outermost layers of the nonwoven fabric of multi-layer consisting of three or more layers is formed by using a crystalline resin composition containing 1 to 99% by mass of a low crystalline olefin polymer satisfying the following expression (a): ΔH≧6×(Tm−140° C.) wherein ΔH represents a melt endotherm, and Tm represents a melting point. | 12-05-2013 |
20140194637 | A-OLEFIN OLIGOMER AND PRODUCTION METHOD THEREOF - An α-olefin oligomer having the following features (1) to (6), and a method for producing the α-olefin oligomer using a particular double-crosslinked meso complex provide an α-olefin oligomer that contains a smaller amount of a dimer component while having a low viscosity, not in accordance with the Schulz-Flory distribution, and a method for producing the same:
| 07-10-2014 |