摘要:
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.
摘要:
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)]≦0.1, (c) rmrm>2.5 mol %, (d) mmxrr/(mr)2≦2.0, and (e) the weight ratio (W25) of components eluted at 25° 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 by 13C-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.
摘要:
1-butene based polymer satisfying following requirements (1″) to (4″) provides formed product having low stickiness, superior flexibility and transparency. (1″) Crystalline resin having melting point (Tm−P), not observed or in the range of 0 to 100° C., wherein said melting point defined as the peak top of the peak observed in the highest temperature zone of the melting heat absorption curve obtained by heating a sample of said polymer at a rate of 10° C./minute using Differential Scanning Calorimeter (DSC), after melting said sample in advance at 190° for 5 minutes under nitrogen atmosphere, followed by cooling it to −10° C. at a rate of 5° C./minutes, and keeping it at −10° C. for 5 minutes. (2″) Stereoregularity index {(mmmm)/(mmrr+rmmr)} is at most 20. (3″) Molecular weight distribution (Mw/Mn) measured by Gel Permeation Chromatography (GPC) method is at most 4.0. (4″) Weight average molecular weight (Mw) measured by GPC method is in the range of 10,000 to 1,000,000.
摘要:
A 1-butene polymer satisfying the following (1), (2) and either (3) or (3′): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the polymer. (1) The intrinsic viscosity [η] as measured in tetralin solvent at 135° C. is 0.01 to 0.5 dL/g. (2) The polymer is a crystalline resin having a melting point (Tm-D) of 0 to 100° C., the melting point being defined as the top of the peak observed on the highest-temperature side in a melting endothermic curve obtained with a differential scanning calorimeter (DSC) in a test in which a sample is held in a nitrogen atmosphere at −10° C. for 5 min and then heated at a rate of 10° C./min. (3) The stereoregularity index {(mmmm)/(mmrr+rmmr)} is 30 or lower. (3′) The mesopentad content (mmmm) determined from a nuclear magnetic resonance (NMR) spectrum is 68 to 73%.
摘要:
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.
摘要:
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.
摘要:
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 [η] of 0.8 to 5 dl/g.
摘要翻译:根据本发明的丙烯聚合物或其组合物具有优异的熔体流动性并且含有较少量的粘着性成分,并且还具有低模量和柔韧性,并且能够提供透明模制品,因此是 可用作柔性氯乙烯树脂的替代物。 此外,由其制成的模制品在低温下表现出优异的热封性能,并且在透明性和刚性方面优异。 具体地说,其具有30至80%的立体有规配比的全同立构五单元组分数(mmmm),3.5或更小的分子量分布(Mw / Mn)和特性粘度η为0.8至5dl / g 。
摘要:
The wrap film and the shrink film of the present invention are formed from a resin composition comprising a specific 1-butene base polymer satisfying the following items (1) to (4) and an olefin base polymer, and they are excellent in a safety and satisfy characteristics for a wrap film or a shrink film: (1) a crystalline resin in which a melting point (Tm-D) defined as a peak top of a peak observed at a highest temperature side in a melting endothermic curve obtained by holding a sample at −10° C. for 5 minutes under nitrogen atmosphere by means of a differential scanning calorimeter (DSC) and then elevating the temperature at 10° C./minute is 0 to 100° C.; (2) a stereospecific index {(mmmm)/(mmrr+rmmr)} is 20 or less; (3) a molecular weight distribution (Mw/Mn) measured by a gel permeation chromatography (GPC) method is 4.0 or less; and (4) a weight average molecular weight (Mw) measured by the GPC method is 10,000 to 1,000,000.
摘要:
The polypropylene film of the present invention satisfies the relationship: TM≧12.5×HST−900, wherein TM is a tensile modulus (MPa) and HST is a heat seal temperature (° C.), and is well-balanced between the tensile modulus and the heat seal temperature, less tacky, and excellent in processability, transparency and impact resistance. The polypropylene film may be produced from a propylene polymer (A) having: (1) a melting point (Tm) of from 120 to 135° C. as measured by differential scanning calorimeter (DSC); (2) a melting endotherm &Dgr;H (J/g) as measured by the DSC, satisfying the following formula: &Dgr;H≧0.45×Tm+22; (3) a peak top half-width (Th) of 5° C. or lower when measured on an elution curve by temperature rising fractionation; and (4) an intrinsic viscosity [&eegr;] of from 1 to 3 dl/g as measured at 135° C. in tetralin. A multilayered polyolefin resin laminate of the present invention comprises at least one outermost layer made of the above polypropylene film, and is well-balanced between a tensile modulus and a heat seal temperature, less tacky and excellent in slipping and anti-blocking properties.
摘要:
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.