摘要:
Provided is a method of producing an α-olefin polymer including a step of polymerizing one or more kinds of α-olefins each having 6 to 20 carbon atoms with a catalyst obtained by using a specific transition metal compound. By the method, an α-olefin polymer having a viscosity suitable for use in a lubricating oil can be produced on an industrial scale with ease, and further, the characteristics of the product can be widely changed through the control of reaction conditions.
摘要:
Provided are an α-olefin copolymer useful as a high-viscosity lubricant oil excellent in viscosity characteristics, low-temperature characteristics and oxidation stability, and a lubricant oil containing the copolymer. The α-olefin copolymer is a 1-octene/1-decene copolymer produced by the use of a doubly bridged metallocene catalyst.
摘要:
Provided is a method of producing an α-olefin polymer including a step of polymerizing one or more kinds of α-olefins each having 6 to 20 carbon atoms with a catalyst obtained by using a specific transition metal compound. By the method, an α-olefin polymer having a viscosity suitable for use in a lubricating oil can be produced on an industrial scale with ease, and further, the characteristics of the product can be widely changed through the control of reaction conditions.
摘要:
A magnesium compound represented by the formula (I): Mg(OC2H5)2−n(OR1)n (I) where R1 is CmH2m+1 (where m is an integer of from 3 to 10), and n is a numerical value satisfying 0
摘要:
A method of producing a magnesium compound by reacting the following components (i), (ii) and (iii):(i) metal magnesium (ii) an alcohol (iii) a metal dihalide compound represented by the general formula (I) containing at least 0.001 mole of M relative to one mole of magnesium of the metal magnesium (i) MX2 (I) where X is a halogen atom and M is Mn, Fe, Co or Zn.
摘要:
Provided are a solid catalyst component for olefin polymerization and a catalyst comprising the component for olefin polymerization, in which the electron donor is free from the problem of lacking in safety and sanitation, and is inexpensive and easy to produce, and which exhibit high activity in producing olefin polymers with high stereospecificity, and also a method for producing olefin polymers in the presence of the catalyst. The solid catalyst component comprises titanium, magnesium and an electron donor compound of formula (I): wherein R1 and R2 each represent a linear or branched hydrocarbon residue having from 1 to 20 carbon atoms; R3 represents an alicyclic hydrocarbon residue having from 3 to 20 carbon atoms; and n represents an integer of from 1 to 10. The solid catalyst component is combined with an organic aluminium compound to prepare a catalyst, which is used in producing olefin polymers.
摘要:
Provided are an α-olefin (co)polymer useful as high-viscosity lubricant oil excellent in viscosity characteristics and low-temperature characteristics, and a lubricant oil containing the (co)polymer. The α-olefin (co)polymer is produced by the use of a metallocene catalyst and satisfies the following (a′) and (b′). (a′) The 2,1-insertion ratio at the polymer terminal, as measured through 1H-NMR, is at least 30 mol % of the entire molecule, and (b′) the mesotriad fraction (mm), as measured through 13C-NMR, is at most 50 mol %. Preferably, a 1-octene/1-dodecene copolymer is provided, as produced by the use of a metallocene catalyst and satisfying the following (a) to (c). (a) The molar ratio of the 1-octene unit to the 1-dodecene unit is from 20/80 to 80/20, (b) the mesotriad fraction (mm), as measured through 13C-NMR, is at most 50 mol %, and (c) the kinematic viscosity at 100° C. is from 30 to 1000 mm2/sec.
摘要:
Provided are an α-olefin copolymer useful as a high-viscosity lubricant oil excellent in viscosity characteristics, low-temperature characteristics and oxidation stability, and a lubricant oil containing the copolymer. The α-olefin copolymer is a 1-octene/1-decene/1-dodecene ternary copolymer produced by the use of a doubly crosslinked metallocene catalyst.
摘要:
A magnesium compound represented by the formula (I): Mg(OC2H5)2−n(OR1)n (I) where R1 is CmH2m+1 (where m is an integer of from 3 to 10), and n is a numerical value satisfying 0
摘要翻译:由式(I)表示的镁化合物:<?in-line-formula description =“In-line Formulas”end =“lead”?> Mg(OC 2 H 5) 2-n(或<1> 1) i>(I)<?in-line-formula description =“In-Line Formulas “end =”tail“?>其中R 1是C m H 2 m + 1(其中m是3至10的整数 ),n是满足0
摘要:
An α-olefin polymer having extremely high stereoregularity, exhibiting excellent fluidity and containing a decreased amount of catalyst residues in the polymer can be obtained industrially advantageously in accordance with a process for producing an α-olefin polymer which comprises homopolymerizing an α-olefin or copolymerizing two or more α-olefins in the presence of (A) a solid catalyst component comprising magnesium, titanium and a halogen, (B) an organoaluminum compound having a content of hydroaluminum compounds of 0.1% by weight or smaller and (C) an organozinc compound.A block copolymer of propylene comprising a homopolymer portion exhibiting high fluidity and a copolymer portion having a high molecular weight can be obtained in accordance with a process for producing a block copolymer of propylene which comprises polymerizing propylene in the presence of (A) a solid catalyst component comprising a titanium compound and an electron-donating agent, (B) an organoaluminum compound and (C) an organozinc compound to produce crystalline polypropylene and copolymerizing propylene and at least one of ethylene and α-olefins having 4 or more carbon atoms in the presence of the produced crystalline polypropylene.