摘要:
A compound of the formula Ia or Ib; where, in the formula Ia, E1 is O, S, Se, Te, NR, CR2, or PR; E2, E3 are each CR, N, or P; E4 is N, or P; E5 is OH, SH, NHR, OR′, SR′, or NRR′; E6 is NH, PH, NR′, or PR′; R5, R6 are each hydrogen or a linear, branched or cyclic alkyl radical or an aryl radical; R1, R2, R3, R4 are each hydrogen, a linear, branched or cyclic alkyl radical, an aryl radical, a halogen or a nitro group; R is hydrogen, a linear, branched or cyclic alkyl radical; R′ is a linear, branched or cyclic alkyl radical; where at least one of the groups E5 and E6 contains a hydrogen atom; and in the formula Ib, the symbols E1, E4, E5, E6, R5, R6, R1, R2, R3, R4, R and R′ are as defined in formula Ia; and E′2 and E′3 are each O, S, Se, Te, NR, CR2, or PR.
摘要翻译:式Ia或Ib的化合物; 其中,在式Ia中,E 1是O,S,Se,Te,NR,CR 2或PR; E 2,E 3各自为CR,N或P; E 4是N或P; E 5是OH,SH,NHR,OR',SR'或NRR'; E 6是NH,PH,NR'或PR'; R 5,R 6各自为氢或直链,支链或环状烷基或芳基; R 1,R 2,R 3,R 4和R 4各自为氢,直链,支链或环状的烷基 自由基,芳基,卤素或硝基; R是氢,直链,支链或环状的烷基; R'是直链,支链或环状的烷基; 其中基团E 5和E 6中的至少一个含有氢原子; 在式Ib中,符号E 1,E 4,E 5,E 6,R 6, R 5,R 6,R 1,R 2,R 3,R 3, R 4和R'如式Ia中所定义; 和E'2和E'3各自各自为O,S,Se,Te,NR,CR 2或PR。
摘要:
Complexes of the formulae Ia and Ib where M=Ti, Zr, Hf, V, Nb, Ta, Cr, Ni, Pd, can be used for the polymerization and copolymerization of olefins, for example in suspension polymerization processes, gas-phase polymerization processes and bulk polymerization processes.
摘要:
Complexes of the formula I where M═Ni, Pd; process for preparing the metal complexes and the use of the complexes obtainable in this way for the polymerization and copolymerization of olefins, for example in suspension polymerization processes, gas-phase polymerization processes and bulk polymerization processes.
摘要:
Complexes of the formula I where M═Ni, Pd; process for preparing the metal complexes and the use of the complexes obtainable in this way for the polymerization and copolymerization of olefins, for example in suspension polymerization processes, gas-phase polymerization processes and bulk polymerization processes.
摘要:
A method of determining the quality of polymerization catalysts comprises a) provision of the catalysts, b) polymerization of a monomer using these catalysts, c) isolation of the polymers obtained in b), d) characterization of the polymers, wherein the method is carried out in an assembly of n vessels in an essentially automated fashion, where the steps a) to d) are all carried out in parallel or are all carried out sequentially or some of the steps a) to d) are carried out in parallel and the remainder are carried out sequentially and n is a natural number greater than or equal to 2.
摘要:
A process for the preparation of a supported catalyst system, an inorganic carrier material being reacted with a metal compound of the formula M1(R1)r(R2)5(R3)t(R4)u I in the presence of an inert solvent in a first step and, in a subsequent step, the suspension thus obtained being reacted with a metallocene complex and a compound forming metallocenium ions, in which process the solvent is not removed after the first step and the subsequent step is carried out without isolation of the pretreated carrier material thus obtained.
摘要:
A free-flowing solid which does not self-ignite, comprising: a) at least one support component, b) at least one chemical compound which per se is self-igniting, c) at least one inert liquid and d) further components.
摘要:
Complexes of the formulae Ia and Ib where M=Ti, Zr, Hf, V, Nb or Ta, can be used for the polymerization and copolymerization of olefins, for example in suspension polymerization processes, gas-phase polymerization processes and bulk polymerization processes.
摘要:
Metal compounds of the formula I, where M is selected from among Ni and Pd in the oxidation state +II can be used for the polymerization or copolymerization of olefins. Supported catalysts for the polymerization and copolymerization of olefins can be obtained by application of one or more of the above-described ionic metal compounds to a support.
摘要:
A catalyst system for the polymerization of olefins is prepared by initially charging one or more compounds of the formula I a or I b, subsequently adding a molecularly defined activator of the formulae II a to c [(L—H)]+[(M′)Q1Q2Q3Q4]− II a [(CAr3)]+[(M′)Q1Q2Q3Q4]− II b [(M′)Q1Q2Q3] II c and finally adding an alkylating agent selected from among LiR11, MgR11R12 and AlR12R13R14.