摘要:
An ethylene-α-olefin copolymer containing monomer units derived from ethylene and monomer units of an α-olefin having 3 to 20 carbon atoms and having a melt flow rate of from 0.01 to 100 g/10 min, an activation energy of flow of 50 kJ/mol or more, a molecular weight distribution measured by a gel permeation chromatography of 3 or more and minute defects of 2000/m2 or less in number, a process for producing the copolymer, and a molding of the copolymer.
摘要翻译:包含衍生自乙烯的单体单元和具有3至20个碳原子且具有0.01至100g / 10min的熔体流动速率的α-烯烃的单体单元的乙烯-α-烯烃共聚物,流动的活化能为50 kJ / mol以上,通过3次以上的凝胶渗透色谱法测定的分子量分布,数量为2000个/ m 2以下的微小缺陷,共聚物的制造方法和共聚物的成型。
摘要:
An ethylene-α-olefin copolymer comprising a repeating unit derived from ethylene and a repeating unit derived from an α-olefin having 3 to 20 carbon atoms, wherein a melt flow rate (MFR) is 0.01 to 100 g/10 minutes, a density is 860 to 970 kg/m3, a molecular weight distribution (Mw/Mn) is 2 to 8, and a ratio (η*0.1/η*100) of a dynamic complex viscosity (η*0.1) at a temperature of 190° C. and an angular frequency of 0.1 rad/s, to a dynamic complex viscosity (η*100) at a temperature of 190° C. and an angular frequency of 100 rad/s is 15 to 100 is excellent in balance between mechanical strength and processability.
摘要:
The object is to provide a method for producing a film excellent in a quality of odorless or free from deteriorating taste of food contained in a package of the extruded molded article by using an ethylene-α-olefin copolymer excellent in extrusion molding processability. This object is achieved by a method for producing an extruded molded article comprising a step of extruding a copolymer of ethylene and α-olefin of from 3 to 20 carbon atoms having an activation energy for melt flow of not less than 50 kJ/mol under one of the following conditions: (a) a temperature of melted resin at die gap of T-die is not more than 200° C., (b) a temperature of melted resin at die gap of tubular tie is not more than 170° C.
摘要:
An ethylene-based polymer resin which is obtained by copolymerizing ethylene with an α-olefin having 5 to 20 carbon atoms, and has a melt flow rate (MFR) measured at 190° C. under a load of 21.18 N according to JIS K7210-1995, of not less than 0.01 g/10 min. and less than 1 g/10 min., wherein the melt flow rate and a melt tension(MT) at 190° C. (unit: cN) of the resin satisfy a relation of the following expression (1) and an intrinsic viscosity [η] (unit: dL/g) and the melt flow rate of the resin satisfy a relation of the following expression (2): 2×MFR−0.59
摘要:
An ethylene-based polymer comprising ethylene and at least one addition polymerizable monomer containing a vinyl compound (A) described below, wherein the ethylene-based polymer has a melting temperature (Tm) of 119 ° C. or lower and, the melt index MI (g/10 minutes) of the ethylene-based polymer and the molar content “m” (mole %) of the vinyl compound (A) satisfy the following formula (1): Vinyl compound (A): a vinyl compound represented by the structural formula CH2═CH—R containing a saturated hydrocarbon group R wherein the substituent R has a steric parameter Es of not less than −2.77 and not more than −1.64 and the substituent R has a steric parameter B1 of not less than 1.53 and not more than 2.90: 0.01≧MI≦18+m1.4 (1)
摘要:
A method of producing an inflation film, which comprises processing an ethylene polymer or a resin composition containing said ethylene polymer in a die gap at a melting temperature of not more than 170° C., wherein said ethylene polymer is produced by an ionic polymerization method and said ethylene polymer has a density of 0.89 to 0.96 g/cm3, a melting viscosity &eegr;*[170] at 170° C. under a shear rate of 100 rad/sec of 0.001×104 to 3.5×104 poise and a weight proportion a (% by weight) of a cold xylene-soluble portion satisfying the following formula (1): a
摘要:
The object is to provide a method for producing a film excellent in a quality of odorless or free from deteriorating taste of food contained in a package of the extruded molded article by using an ethylene-α-olefin copolymer excellent in extrusion molding processability. This object is achieved by a method for producing an extruded molded article comprising a step of extruding a copolymer of ethylene and α-olefin of from 3 to 20 carbon atoms having an activation energy for melt flow of not less than 50 kJ/mol under one of the following conditions: (a) a temperature of melted resin at die gap of T-die is not more than 200° C., (b) a temperature of melted resin at die gap of tubular tie is not more than 170° C.
摘要:
A copolymer having monomer units derived from ethylene and monomer units derived from an α-olefin of 3 to 20 carbon atoms, a density of 906 to 970 kg/m3 and an activation energy of flow of 50 kJ/mol or more, and satisfying specific relations among a melt complex viscosity, a melt flow rate and a characteristic relaxation time.
摘要翻译:具有衍生自乙烯的单体单元和衍生自3至20个碳原子的α-烯烃的单体单元,密度为906至970kg / m 3的共聚物和50kJ的流动活化能 / mol以上,并且满足熔体复数粘度,熔体流动速率和特征弛豫时间之间的特定关系。
摘要:
An ethylene-α-olefin copolymer having monomer units derived from ethylene and monomer units derived from an α-olefin of 3 to 20 carbon atoms, a density of 906 to 970 kg/m3, an activation energy of flow of 50 kJ/mol or more and a heat quantity of fusion of a cold xylene soluble part of 30 J/g or more, and satisfying specific relations among a rate of the cold xylene soluble part in the copolymer, the density, a melt flow rate and a characteristic relaxation time.
摘要翻译:具有衍生自乙烯的单体单元和衍生自3-20个碳原子的α-烯烃的单体单元,密度为906至970kg / m 3的乙烯-α-烯烃共聚物,活化能 的流动为50kJ / mol以上,冷二甲苯可溶部分的熔融热量为30J / g以上,满足共聚物中冷二甲苯可溶部分的比例,密度,a 熔体流动速率和特征弛豫时间。
摘要:
An object of the present invention is to provide an ethylene-α-olefin copolymer excellent in extrusion molding processability and in the balance between the appearance and impact strength. This object is achieved by a copolymer of ethylene and α-olefin of from 4 to 20 carbon atoms having melt flow rate (MFR; unit is g/10 minutes), melt tension at 190° C. (MT; unit is cN), intrinsic viscosity ([η]; unit is dl/g), the chain length A and characteristic relaxation time at 190° C. (τ; unit is sec) which satisfy the specific relations.