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- Nachgewiesen in: USPTO Patent Applications
- Sprachen: English
- Document Number: 20060135712
- Publication Date: June 22, 2006
- Appl. No: 10/539038
- Application Filed: December 15, 2003
- Claim: 1. An ethylene-based polymer which is an ethylene/C4 to C10 α-olefin copolymer and satisfies the following requirements [k1] to [k3] simultaneously: [k1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C. is in the range of 1.0 to 50 g/10 minutes; [k2] LNR defined as a scale of neck-in upon film molding is in the range of 0.6 to 1.4; and [k3] take-up speed at break [DS (m/min)] at 160° C. and melt flow rate (MFR) satisfy the following relationship (Eq-1): 12×MFR0.577≦DS≦165×MFR0.577 (Eq-1).
- Claim: 2. The ethylene-based polymer according to claim 1, which simultaneously satisfies the following requirements [m1] to [m3]: [m1] density [d] is in the range of 890 to 950 kg/m3; [m2] ratio [MT/η* (g/Poise)] of melt tension [MT (g)] at 190° C. to shearing viscosity [η* (Poise)] at 200° C. at an angular velocity of 1.0 rad/sec. is in the range of 2.00×10−4 to 9.00×10−4; and [m3] sum [(A+B) (/1000C)] of the number of methyl branches [A (/1000C)] and the number of ethyl branches [B (/1000C)] per 1000 carbon atoms measured by 13C-NMR is 1.4 or less.
- Claim: 3. The ethylene-based polymer according to claim 1 or 2, which satisfies at least one of the following requirements [n1] to [n3]: [n1] ratio (Mz/Mw) of Z-average molecular weight (Mz) to weight-average molecular weight (Mw), measured by GPC, is 10 or more; [n2] the number of terminal vinyl groups (V) per molecular chain calculated from the number of terminal vinyl groups [v (/1000C)] per 1000 carbon atoms measured by IR and number-average molecular weight (Mn) measured by GPC is not higher than 0.47 per molecular chain; and [n3] melting-point maximum peak [Tm (° C.)] in DSC and density (d) satisfy the following relationship (Eq-2): (0.315×d)−200≦Tm≦(0.315×d)−170 (Eq-2).
- Claim: 4. The ethylene-based polymer according to claim 1, which is obtained by polymerization using an olefin polymerization catalyst formed from: a solid carrier, and (A) a solid transition metal catalyst component obtained by contacting: (a) a compound of a transition metal of the group 4 in the periodic table, containing at least one ligand having a cyclopentadienyl skeleton, (b) an organoaluminum oxy compound, and (c) a multifunctional organic halide represented by the following general formula (I): (Q1)o—R—(Q2)p (I) wherein R is a (o+p)-valent group containing at least one halogen atom, o and p each represent a positive integer satisfying the relationship (o+p)≧2, Q1 and Q2 each represent —OH, —NH2 or —NLH whereupon L is an arbitrary group selected from a C1 to C20 hydrocarbon group, a C1 to C20 halogen-containing hydrocarbon group, a silicon-containing group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group and a phosphorus-containing group, and L and R, N and R, or N and N may be bound to each other to form a ring, and if necessary (d) an organoaluminum compound, and if necessary (B) an organoaluminum compound.
- Claim: 5. The ethylene-based polymer according to claim 4, which is obtained by polymerization using a catalyst formed from: a preliminary polymer having a z-average molecular weight of 6,000,000 or more by GPC and having a die-swell ratio of 1.4 or more, pre-polymerized by ethylene, or ethylene and a C4 to C10 α-olefin, with the solid transition metal catalyst component, wherein 0.01 to 1000 g of the polymer is contained per g of the solid transition metal catalyst component, and if necessary (B) an organoaluminum compound.
- Claim: 6. The ethylene-based polymer according to claim 4 or 5, wherein the multifunctional organic halide (c) is a compound represented by the following general formula (I): (Q1)o—R—(Q2)p (I) wherein R is a (o+p)-valent group containing at least one halogen atom, o and p each represent a positive integer satisfying the relationship (o+p)≧2, Q1 and Q2 each represent —OH, —NH2 or —NLH whereupon L is an arbitrary group selected from a C1 to C20 hydrocarbon group, a C1 to C20 halogen-containing hydrocarbon group, a silicon-containing group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group and a phosphorus-containing group, and L and R, N and R, or N and N may be bound to each other to form a ring.
- Claim: 7. The ethylene-based polymer according to claim 4, wherein the compound (a) of a transition metal of the group 4 in the periodic table, containing at least one ligand having a cyclopentadienyl skeleton, is a compound represented by the following general formula (II), (III) or (IV): [chemical expression included] wherein R1 to R6 are independently selected from a hydrogen atom, a halogen atom, a C1 to C20 alkyl group, a C3 to C20 cycloalkyl group, a C2 to C20 alkenyl group, a C6 to C20 aryl group, and a C7 to C20 arylalkyl group, respectively, and can contain a silicon, halogen or germanium atom, and at least one pair of R3 and R4, R4 and R5, and R5 and R6 may be bound to each other to form a ring, R7 is a divalent group having two ligands, and is a C1 to C20 hydrocarbon group, a C1 to C20 halogen-containing hydrocarbon group, a silicon-containing group or a germanium- or tin-containing group, and two substituent groups on the same carbon, silicon, germanium or tin atom may be bound to each other to form a ring, t1 and t2 independently represent a group selected from a hydrogen atom, a halogen atom, a C1 to C20 hydrocarbon group, a C1 to C20 halogen-containing hydrocarbon group, a silicon-containing group, an oxygen-containing group, a sulfur-containing group, a nitrogen-containing group and a phosphorus-containing group, respectively, and M is a transition metal selected from titanium, zirconium and hafnium, [chemical expression included] wherein R7, t1, t2 and M each have the same meaning as defined in formula (II), R8 to R19 independently represent a hydrogen atom, a halogen atom, a C1 to C20 alkyl group, a C3 to C20 cycloalkyl group, a C2 to C20 alkenyl group, a C6 to C20 aryl group or a C7 to C20 arylalkyl group, respectively, and can contain a silicon, halogen or germanium atom, and adjacent substituent groups out of R8to R19 may be bound to each other to form a ring.
- Claim: 8. A thermoplastic resin composition comprising the ethylene-based polymer according to claim 1.
- Claim: 9. A molded product obtained from the ethylene-based polymer according to claim 1.
- Claim: 10. A molded product obtained from the thermoplastic resin composition according to claim 8.
- Claim: 11. The molded product according to claim 9 or 10, wherein the molded product is a film.
- Current U.S. Class: 526160/000
- Current International Class: 08
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