摘要:
The invention relaters to a process for producing an oligomeric product by oligomerisation of at least one olefinic compound, the process including a) providing an activated oligomerisation catalyst by combining, in any order, i) a source of chromium, ii) a ligating compound of the formula I (R1)mX1(Y) X2 (R2)n. . . . I wherein X1 and X2 are independently an atom selected from the group consisting of nitrogen, phosphorus, arsenic, antimony, bismuth, oxygen, sulphur and selenium or said atom oxidized by S, Se, N or O where the valence of X1 and/or X2 allows for such oxidation, Y is a linking group between X1 and X2, m and n are independently 0, 1 or a larger integer, and R1 and R2 are independently hydrogen, a hydrocarbyl group, an organoheteryl group or a heterohydrocarbyl group, and R1 being the same or different when m>1, and R2 being the same or different when n>1, iii) a catalyst activator or combination of catalyst activators, b) providing a zinc compound, and c) contacting the at least one olefinic compound with a composition containing the activated oligomerisation catalyst and the zinc compound, the zinc compound being present in a sufficient quantity such that the ratio of the molar amount of zinc in the zinc compound to the molar amount of chromium in the source of chromium is between 1 and 10000 The invention also provides for a process for activating an oligomerisation catalyst to be used to produce an oligomeric product from at least one olefinic compound, as described above
摘要翻译:本发明涉及通过至少一种烯烃化合物的低聚制备低聚产物的方法,该方法包括:a)通过以任何顺序,i)铬源,ii)结合化合物提供活化的低聚催化剂, 式(R1)mX1(Y)X2(R2)n。 。 。 。 其中X1和X2独立地是选自氮,磷,砷,锑,铋,氧,硫和硒的原子或由S,Se,N或O氧化的所述原子,其中X 1和/或 X2允许这种氧化,Y是X1和X2之间的连接基团,m和n独立地是0,1或更大的整数,R1和R2独立地是氢,烃基,有机酰基或杂烃基,和 当m> 1时,R 1相同或不同,并且当n> 1时,R 2相同或不同,iii)催化剂活化剂或催化剂活化剂的组合,b)提供锌化合物,和c)使至少一种烯属 与含有活化低聚催化剂和锌化合物的组合物的化合物,锌化合物以足够的量存在,使得锌化合物中的锌的摩尔量与铬源中的铬的摩尔量的比例在 1 an d 10000本发明还提供了用于活化低聚催化剂以用于从至少一种烯烃化合物制备低聚产物的方法,如上所述
摘要:
A process for obtaining atactic 1-butene polymer optionally containing at least one comonomer selected from ethylene, propylene or an alpha-olefin of formula CH2═CHRo, wherein Ro is a linear or branched C3-C20 alkyl group, comprising the step of polymerizing 1-butene and optionally ethylene, propylene or said alpha-olefin, in the presence of a catalyst system obtainable by contacting: a) at least one metallocene compound of formula (I) in its meso or meso-like form wherein M is an atom of a transition metal; p is an integer from 0 to 3; X, same or different, is a hydrogen atom, a halogen atom, or a hydrocarbon group; L is a divalent C1-C40 hydrocarbon radical optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; R1 and R2, are C1-C40 hydrocarbon radicals; T, equal to or different from each other, is a moiety of formula (IIa) or (IIb): wherein R3 is a C1-C40 hydrocarbon radical; R4 and R6, are hydrogen atoms or C1-C40 hydrocarbon radicals; R5 is a C1-C40 hydrocarbon radical; R7 and R8, equal to or different from each other, are hydrogen atoms or C1-C40 hydrocarbon radicals; and b) an alumoxane or a compound capable of forming an alkyl metallocene cation.
摘要:
The present invention relates to an ultrahigh-molecular-weight ethylene copolymer powder having an intrinsic viscosity (η) of 10 dl/g to 34 dl/g, obtainable by copolymerizing ethylene and at least one olefin selected from the group consisting of α-olefins having 3 to 20 carbon atoms, cyclic olefins having 3 to 20 carbon atoms, compounds represented by the formula CH2═CHR1 wherein R1 is an aryl group having 6 to 20 carbon atoms, and linear, branched or cyclic dienes having 4 to 20 carbon atoms, wherein (1) a molded article of the copolymer powder has a haze of from 30% to 80% and (2) the copolymer powder has a bulk density of from 0.35 g/cm3 to 0.6 g/cm3.
摘要翻译:本发明涉及一种超高分子量乙烯共聚物粉末,其具有10dl / g至34dl / g的特性粘度(&egr),可通过共聚乙烯和至少一种选自α-烯烃的烯烃, 具有3至20个碳原子的烯烃,具有3至20个碳原子的环烯烃,由式CH 2 = CHR表示的化合物,其中R 1是具有6至20个碳原子的芳基,以及具有4至20个碳原子的直链,支链或环状二烯 原子,其中(1)共聚物粉末的模制品的雾度为30%至80%,(2)共聚物粉末的堆积密度为0.35g / cm 3至0.6g / cm 3。
摘要:
A method for preparing a functionalized polymer, the method comprising the steps of (i) polymerizing conjugated diene monomer by employing a lanthanide-based catalyst to form a reactive polymer, and (ii) reacting the reactive polymer with a protected oxime compound.
摘要:
A method to make an acidic ionic liquid catalyst, by mixing aluminum chloride in the presence of a hydrocarbon solvent, an organic chloride, and optionally an ionic liquid; wherein the acidic ionic liquid catalyst does not precipitate out solids; and wherein the acidic ionic liquid catalyst has greater than 20 wt % conjunct polymer and a molar ratio of Al to a heteroatom selected from the group consisting of N, P, O, S, and combinations thereof greater than 2.0. Also a method to make the acidic ionic liquid catalyst comprising: a. mixing aluminum chloride in the presence of a hydrocarbon solvent, and an organic chloride, to make an acid catalyst phase comprising a conjunct polymer; b. adding hydrogen chloride to the acid catalyst phase.
摘要:
A catalyst composition comprising one or more metal complexes of a multifunctional Lewis base ligand comprising a bulky, planar, aromatic- or substituted aromatic-group and polymerization processes employing the same, especially continuous, solution polymerization of one or more α-olefins at high catalyst efficiencies are disclosed.
摘要:
A catalytic system usable for the copolymerization of at least one conjugated diene and at least one monoolefin, a process for preparing this catalytic system, a process for preparing a copolymer of a conjugated diene and at least one monoolefin using said catalytic system, and said copolymer are described. This catalytic system includes: (i) an organometallic complex represented by the following formula: {[P(Cp)(Fl)Ln(X)(LX)}p (1) where Ln represents a lanthanide atom to which is attached a ligand molecule comprising cyclopentadienyl Cp and fluorenyl Fl groups linked to one another by a bridge P of the formula MR1R2, M is an element from column IVa of Mendeleev's periodic table and R1 and R2 each represent alkyl groups of 1 to 20 carbon atoms or cycloalkyl or phenyl groups of 6 to 20 carbon atoms, X represents a halogen atom, L represents an optional complexing molecule, such as an ether, and optionally a substantially less complexing molecule, such as toluene, p is a natural integer greater than or equal to 1 and x is greater than or equal to 0, and (ii) a co-catalyst selected from alkylmagnesiums, alkyllithiums, alkylaluminums, Grignard reagents and mixtures of these constituents.
摘要:
A process for polymerizing 1-butene comprising the step of contacting under polymerization conditions 1-butene and optionally from 0 to 20% by mol of an alpha olefin with a catalyst system obtainable by contacting a bridged metallocene compound of formula (I) wherein R1 and R2 are an hydrocarbon radical A is a carbon atom, a germanium atom or a silicon atom; m is 1, 2; M is a metal of group 4 of the Periodic Table of the Elements; X, is hydrogen, a halogen atom, or a group R, OR, OSO2CF3, OCOR, SR, NR2 or PR2, wherein the substituents R are hydrocarbon radical; L is a moiety of formula (IIa) or (IIb) wherein T is an oxygen (O) or sulphur (S) atom or a CH2 group; and R3 and R4 are hydrogen atoms or hydrocarbon radicals; one or more alumoxanes or compounds able to form an alkylmetallocene cation; and optionally an organo aluminum compound.
摘要:
Ethylene propylene copolymers, substantially free of diene, are described. The copolymers will have a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the copolymers will exhibit a statistically insignificant intramolecular difference of tacticity. The copolymers are made in the presence of a metallocene catalyst.
摘要:
A composition comprising a polymerization modifier for the copolymerization of at least one olefin monomer and 1-octene and a polymerization process using the polymerization modifier.