Abstract:
The present invention relates to a polymer having a melt tension (MT (g)) substantially the same as or lower than that of a conventional polymer which is substantially the same as the polymer in the recurring unit of the main skeleton, the molecular weight, the molecular weight distribution and the crystallinity, and having a flow activation energy (Ea (KJ/mol)) larger than a value obtained by adding 5 KJ/mol to the Ea value of the conventional polymer. A preferred example 'of the polymer is a branched polyolefin comprising 50 to 100 % by mol of recurring units derived from ethylene and 0 to 50 % by mol of recurring units derived from an alpha -olefin of 3 to 20 carbon atoms and having the following properties: the flow activation energy (Ea (KJ/mol)) and the alpha -olefin content (C (% by weight)) satisfy a specific relation, and the melt tension (MT (g)) and the melt flow rate (MFR (g/10 min)) satisfy a specific relation. This branched polyolefin is excellent in moldability and mechanical strength.
Abstract:
A polymer characterized by having a melt tension (MT (g)) substantially equal to or lower than that of a polymer which is substantially equal in repeating units of the backbone and in molecular weight, molecular-weight distribution, and crystallinity and by having a flow activation energy (Ea (KJ/mol)) higher by at least 5 KJ/mol than the Ea value of that polymer. A preferred example of the polymer is one which comprises 50 to 100 mol% repeating units derived from ethylene and 0 to 50 mol% repeating units derived from an a-olefin having 3 to 20 carbon atoms, satisfies a specific relationship between flow activation energy (Ea (KJ/mol)) and a-olefin content (C (wt.%)), and satisfies a specific relationship between melt tension (MT (g)) and melt flow rate (MFR (g/10 min)). This branched polyolefin is excellent in moldability and mechanical strength.
Abstract:
【課題】押出成形時の加工特性(耐ネックイン性、耐膜切れ性、耐サージング性)に優れ、シール強度が高く、耐ボイル性、耐内容物性、低温シール性に優れた押出ラミネートフィルム等を製造することのできる樹脂組成物を提供すること。【解決手段】要件I)〜VII)を満たすエチレン・C4−10α−オレフィン共重合体と、要件1)〜3)を満たすエチレン・C4−10α−オレフィン共重合体とを含むエチレン系重合体組成物;I)MFR=0.01〜30g/10分、II)密度=890〜970kg/m3、III)MT/&eegr;*=1.00?10-4〜9.00?10-4、IV)〔(Me分岐+Et分岐)(/1000C)〕≦̸1.80、V)&eegr;0/Mw6.8=0.03?10-30〜7.50?10-30、VI)peak top M=1.0?104.30〜1.0?104.50、VII)[&eegr;]/Mw0.776=0.80?10-4〜1.65?10-4、1)MFR=7.0〜30g/10分、2)密度=880〜915kg/m3、3)[&eegr;]/Mw0.776=1.90?10-4〜2.80?10-4。【選択図】なし
Abstract:
PROBLEM TO BE SOLVED: To provide an easy cutting laminate film having small neck-in in die molding, not generating draw resonance, capable of being thinned, satisfying excellent seal strengh and easy cutting, and having both adhesive property to a substrate generally not using an anchor coat agent (adhesive agent) such as paper, a metal foil and a metal vapor deposition film and having sealing properties of resins to each other.SOLUTION: The problem is solved by a laminate film containing at least one layer comprising an ethylene copolymer of ethylene and α-olefin having 4 to 10 carbon atoms, satisfying the prescribed requirements (I) to (VIII).
Abstract:
PROBLEM TO BE SOLVED: To provide a resin composition for laminate paper, which does not cause taking surging on extrusion laminate molding, and is excellent in high velocity moldability, and to provide laminate paper containing at least one layer comprising the composition. SOLUTION: This resin composition for laminate paper comprises an ethylenic resin which is a copolymer of ethylene with a 4 to 10C α-olefin, and simultaneously satisfies the following requirements (I) to (V). (I) MFR is 0.1 to 50 g/10 min. under a load of 2.16 kg at 190°C. (II) A density of 875 to 970 kg/m 3 . (III) A ratio [MT/η * ] of a melt tension [MT] at 190°C to a shear viscosity [η * ] at an angular velocity of 1.0 rad/sec at 200°C is 1.00×10 -4 to 9.00×10 -4 . (IV) The sum [(A)+(B)] of the number [A] of methyl branches and the number [B] of ethyl branches per 1000 carbon atoms is ≤1.8. (V) A zero shear viscosity [η 0 ] and a weight-average mol.wt. at 200°C satisfies a relation (Eq-1): 0.01×10 -13 ×Mw 3.4 ≤η 0 ≤4.5×10 -13 ×Mw 3.4 . COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a resin composition for adhesion, which does not cause take-off surging on extrusion laminate molding, and is excellent in high velocity moldability and adhesiveness, and to provide a packaging material comprising a laminate containing a layer comprising the composition as an adhesive layer. SOLUTION: This resin composition for adhesion comprises an ethylenic resin which is a copolymer of ethylene with a 4 to 10C α-olefin, and simultaneously satisfies the following requirements (I) to (V). (I) MFR is 0.1 to 50 g/10 min. under a load of 2.16 kg at 190°C. (II) A density of 875 to 970 kg/m 3 . (III) A ratio [MT/η * ] of a melt tension [MT] at 190°C to a shear viscosity [η * ] at an angular velocity of 1.0 rad/sec at 200°C is 1.00×10 -4 to 9.00×10 -4 . (IV) The sum [(A)+(B)] of the number [A] of methyl branches and the number [B] of ethyl branches per 1000 carbon atoms is ≤1.8. (V) A zero shear viscosity [η 0 ] and a weight-average mol.wt. at 200°C satisfies a relation (Eq-1): 0.01×10 -13 ×Mw 3.4 ≤η 0 ≤4.5×10 -13 ×Mw 3.4 . COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an ethylenic polymer composition excellent in moldability and mechanical strengths, and to provide a formed article such as a film. SOLUTION: This ethylenic polymer composition is characterized by simultaneously satisfying the following requirements (I) to (V): (I) a melt flow rate (MFR) of 0.1 to 100 g/10 min; (II) a density (d) of 875 to 970 kg/m 3 ; (III) a ratio of a melt tension [MT(g)] at 190°C to a shear viscosity [η*(p)] at 200°C is 1.00×10 -4 to 7.00×10 -4 ; (IV) a sum [(A+B)(/1000C)] of the number [A(/1000C)] of methyl branches per 1000 carbon atoms and the number [B(/1000C)] of ethyl branches is ≤1.8; and (V) a zero shear viscosity [η 0 (P)] at 200°C and a weight-average mol. wt. (Mw) measured by a GPC-viscosity detector method satisfy the following relational expression (Eq-1): 0.1×10 -13 ×Mw 3.4 ≤η 0 ≤4.5×10 -13 ×Mw 3.4 . COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a production method for an ethylenic polymer having a large number of long-chain branches, high melt tention and excellent moldability and mechanical strength. SOLUTION: The method of polymerizing an olefin is carried out by using a polymerization catalyst constituted of a solid catalyst component obtained from (E), (A) and (C) and an optional component (D). Where, (E) is a solid carrier; (A) is at least one compound selected from (a-1) a specific metallocene compound of a group 4 element in the periodic table and (a-2) a specific compound of a group 4 transition metal in the periodic table; (C) is at least one compound selected from the group consisting of (c-1) an organometallic compound, (c-2) an organoaluminumoxy compound and (c-3) a compound forming an ion pair by reacting with the compounds (A) and (B); and (D) is an organoaluminum compound. When preparing the solid catalyst components, each of the components (A), (B) and (C) is preferably brought into contact with one another by a specified contact order. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a novel polypropylene composition excellent in rigidity and impact resistance in comparison with conventional polypropylene compositions and excellent in elongation at break, and molded products prepared from the polypropylene composition. SOLUTION: The polypropylene composition comprises a polypropylene [A] and an ethylene-based polymer [B] which is a copolymer of ethylene with a 4-10C α-olefin satisfying specific requirements. In the composition, the weight ratio ([A]:[B])of the polypropylene [A] to the ethylene-based polymer [B] is specified in the range of 99:1-55:45. COPYRIGHT: (C)2009,JPO&INPIT