摘要:
The present invention provides a film including, in at least a part thereof, a layer comprising an ethylene-based resin, which is a copolymer of ethylene and an α-olefin of 4 to 10 carbon atoms, and satisfies the following requirements (1) to (5) at the same time or an ethylene-based resin composition containing the resin; (I) the melt flow rate at 190°C under a load of 2.16 kg is in the range of 0.1 to 50 g/10 min, (II) the density is in the range of 875 to 970 kg/m 3 , (III) the ratio of a melt tension at 190°C to a shear viscosity at 200°C and an angular velocity of 1.0 rad/sec is in the range of 1.00×10 -4 to 9.00×10 -4 , (IV) the sum of the number of methyl branches and the number of ethyl branches, each number being based on 1000 carbon atoms and measured by 13 C-NMR, is not more than 1.8, and (V) the zero shear viscosity [η 0 (P)] at 200°C and the weight-average molecular weight (Mw) as measured by a GPC-viscosity detector method (GPC-VISCO) satisfy the following relational formula (Eq-1): 0.01 × 10 - 13 × Mw 3.4 ≤ η 0 ≤ 4.5 × 10 - 13 × Mw 3.4
摘要:
An ethylene-α-olefin copolymer for a film or sheet satisfying the following requirements [1] to [5] simultaneously is excellent in transparency and moldability and is suitably used for a film or sheet excellent in mechanical strength. [1] The density (d) is in the range of 890 to 980 kg/m 3 . [2] The intrinsic viscosity ([η]) measured at 135°C in decalin is in the range of 0.5 to 10 dl/g. [3] The ratio of weight average molecular weight (Mw) to number average molecular weight (Mn) (Mw/Mn) measured by GPC is in the range of 2.0 to 50. [4] In an elution temperature-elution amount curve given by cross fractionation chromatography (CFC), the difference between a temperature at which the integrated elution amount is 1% by mass and a temperature at which the integrated elution amount is 40% by mass is 12°C or less, wherein the total elution amount is 100% by mass. [5] The amount of a component soluble in decane is 0.5% by mass or less.
摘要:
Provided is an ethylene polymer of the present invention, which is a copolymer of ethylene and an α-olefin having 4 to 10 carbon atoms, and satisfies the following conditions [1] to [4] simultaneously: [1] an MFR is in the range of 0.10 to 100 g/10 min, [2] a density (D) is in the range of 860 to 930 kg/m 3 , [3] a ratio (Mw/Mn) of the weight average molecular weight to the number average molecular weight is in the range of 1.50 or more and 3.00 or less, and [4] it satisfies a specific relationship, in accordance with the MFR value of the condition [1], between the ratio (H/W) of the height (H) of a peak having a highest peak intensity to the width (W) at a half of the height of the peak having the highest peak intensity for an elution curve obtained by a temperature rising elution fractionation, and the density (D). The molded products of the invention including the ethylene polymers of the invention have excellent anti-blocking property and low temperature heat sealing property, as well as excellent mechanical strength and thus are suitably applicable to a film and the like.
摘要:
An ethylene polymer which contains 0.01 to 1.20 % by mole of constituent units derived from an α-olefin having 6 to 10 carbon atoms and which exhibits in the cross fractionation chromatography (CFC) the following characteristic: (1) the weight-average molecular weight (Mw) of the components eluted in the temperature range of 73 to 76°C does not exceed 4,000 or (2) the relationship (Eq-1) is satisfied: Sx / Stotal
摘要:
An ethylene polymer containing 0.01 to 1.20 mol% of a constitutional unit derived from α-olefin having 6 to 10 carbon atoms, wherein with respect to cross fractionation chromatography (CFC), either (1) the weight average molecular weight (Mw) of the components eluted at 73 to 76°C does not exceed 4,000, or (2) the ethylene polymer satisfies the following relationship (Eq-1), provides a molded product having excellent moldability and therefore excellent mechanical strength and appearance: S x /S total ≤ 0.1 wherein S x is the sum of the total peak areas related to the components eluted at 70 to 85°C, and S total is the sum of the total peak areas related to the components eluted at 0 to 145°C.