摘要:
The cis-1,4 mer content of conjugated diene mer in polymers can be increased by adding any of a class of morpholine compounds to a catalyst composition that includes a lanthanide metal atom.
摘要:
Filtration system comprising at least one membrane, wherein at least one component or at least one part of a component of the filtration system has been obtained by a process comprising the following steps: A) treatment of a said component or part of a component with at least one organoborane-amine complex, B) treatment of a said component or part of a component with a composition comprising at least one radically polymerizable compound, C) optional treatment with a deblocking agent.
摘要:
The invention relates to a polymerization method for isobutene or mixtures of isobutene with ethylenically unsaturated comonomers under the conditions of a living cationic polymerization . According to the invention, the initiator system additionally comprises at least one non-polymerizable aprotic silicon-organic compound having at least one Si-O bond.
摘要:
The invention relates to metallocenes with a rigid bridge, to a method for producing them, and to their use as catalyst components for producing polyolefins.
摘要:
A polymerisation process for the preparation of vinylic polymers from the corresponding vinylic monomers which process comprises the step of reacting a vinylic monomer in the presence of a catalyst system comprising a) a compound of general formula (I) where M is any metal capable of co-ordinating to an enolate or delocalised enolate-like species; B , B , B and B are chosen from nitrogen, oxygen, sulphur or phosphorus containing moieties wherein each of said nitrogen, oxygen, sulphur or phosporus is linked to at least one carbon atom of an organic group and to M; X is selected from the group consisting of alkyl, H, halogen, alkoxy, thiol aryloxy, ester, b) a metal complex of general formula (II) where A is selected from the group consisting of nickel, iron, cobalt, chromium, manganese, titanium, zirconium, vanadium and the rare earth metals; L , L , L and L are ligands and c) a Lewis acid of general formula (III) wherein at least one of W, Y or Z is capable of forming a co-ordination bond with A and the others of W, Y and Z are bulky groups; D is selected from the group concsisting of aluminium, magnesium, zinc and boron.
摘要翻译:用于从相应的乙烯基单体制备乙烯基聚合物的聚合方法包括在催化剂体系存在下使乙烯基单体反应的步骤,该催化剂体系包含:a)通式(I)的化合物,其中M是任何能够共 适用于烯醇化或脱碱化的烯醇化物质; B 1,B 2,B 3和B 4选自氮,氧,硫或含磷部分,其中所述氮,氧,硫或磷的每一个与至少一个碳原子连接 的有机基团和M; X 1选自烷基,H,卤素,烷氧基,硫醇芳氧基,酯,b)通式(II)的金属络合物,其中A选自镍,铁,钴, 铬,锰,钛,锆,钒和稀土金属; L 1,L 2,L 3和L 4是配体,c)通式(III)的路易斯酸,其中W,Y或Z中的至少一个能够形成共 - 与A的协调债券,W,Y和Z的其他债券是庞大的基金; D选自铝,镁,锌和硼的组合。
摘要:
본 발명은 화학식 1로 표시되는 전이금속 화합물; 및 화학식 2로 표시되는 화합물, 화학식 3으로 표시되는 화합물, 및 화학식 4로 표시되는 화합물 중 1종 이상을 포함하는 촉매 조성물에 관한 것으로, 본 발명에 따른 촉매 조성물은 공중합성이 우수하며, 고분자량을 가지는 올레핀계 중합체 제조용 중합 반응의 촉매로서 유용하게 사용될 수 있다.
摘要:
A method is provided for cationically polymerizing olefin monomer by employing the step of using a novel coinitiator in an organic phase or a neat monomer reaction phase. More specifically, a method is provided for cationically polymerizing olefin monomer by employing the step of using a novel coinitiator in an organic phase or a neat monomer reaction phase, wherein the organic phase is a hydrocarbon solution of the monomer or a halogenated-hydrocarbon solution of the monomer and wherein the neat-monomer reaction phase is a liquid monomer.
摘要:
The invention provides a novel metal complex which, when used with an activating cocatalyst, provides a novel catalyst composition. The invention also provides a polymerization method which utilizes the catalyst composition to produce polymers and copolymers containing polar monomer groups. More specifically, the invention comprises a composition compromising the formula LMXZn wherein X is selected from the group consisting of halides, hydride, triflate, acetates, borates, C1 through C12 alkyl, C1 through C12 alkoxy, C3 through C12 cycloalkyl, C3 through C12 cycloalkoxy, aryl, thiolates, carbon monoxide, cyanate, olefins, and any other moiety into which a monomer can insert. M is selected from the group consisting of Cu, Ag, and Au. L is a nitrogen-containing bidentate ligand having more than two nitrogen atoms. Z is a neutral coordinating ligand and n equals 0, 1, or 2.
摘要:
The application discloses supported initiators for transition metal mediated living free radical and/or atom transfer polymerisation comprising an initiator moiety attached to a support via a selectively cleavable link, and their use to produce polymers.