摘要:
The present invention includes novel ligands which may be utilized as part of a catalyst system. A catalyst system of the present invention is a transition metal-ligand complex. In particular, the catalyst system includes a transition metal component and a ligand component comprising a Nitrogen atom and/or functional groups comprising a Nitrogen atom, generally in the form of an imine functional group. In certain embodiments, the ligand component may further comprise a phosphorous atom. Preferred ligand components are bidentate (bind to the transition metal at two or more sites) and include a nitrogen-transition metal bond. The transition metal-ligand complex is generally cationic and associated with a weakly coordinating anion. A catalyst system of the present invention may further comprise a Lewis or Bronsted acid. The Lewis or Bronsted acid may be complexed with the ligand component of the transition metal-ligand complex.
摘要:
A compound represented by the following general formula (1): [In the formula, X represents a nitrogen atom, Y represents a nitrogen atom or a phosphorus atom, R 5 and R 6 each independently are a hydrogen atom or a hydrocarbon group which has 1-30 carbon atoms and may contain one or more heteroatoms, at least one of R 5 and R 6 being a hydrocarbon group which contains two or more heteroatom-containing groups, and R 1 to R 4 each independently represent a hydrogen atom, a hydrocarbon group which has 1-20 carbon atoms and may contain one or more heteroatoms, or a halogen atom, and two or more groups selected from among R 1 to R 4 may be linked to each other to form an alicyclic ring, an aromatic ring, or a heterocyclic ring which contains one or more heteroatoms selected from among oxygen, nitrogen, and sulfur atoms, in which each of the rings is a 5- to 8-membered ring which may have one or more substituents thereon.]
摘要:
The present invention includes novel ligands which may be utilized as part of a catalyst system. A catalyst system of the present invention is a transition metal-ligand complex. In particular, the catalyst system includes a transition metal component and a ligand component comprising a Nitrogen atom and/or functional groups comprising a Nitrogen atom, generally in the form of an imine functional group. In certain embodiments, the ligand component may further comprise a phosphorous atom. Preferred ligand components are bidentate (bind to the transition metal at two or more sites) and include a nitrogen-transition metal bond. The transition metal-ligand complex is generally cationic and associated with a weakly coordinating anion. A catalyst system of the present invention may further comprise a Lewis or Bronsted acid. The Lewis or Bronsted acid may be complexed with the ligand component of the transition metal-ligand complex.
摘要:
A compound represented by the following general formula (1): [In the formula, X represents a nitrogen atom, Y represents a nitrogen atom or a phosphorus atom, R 5 and R 6 each independently are a hydrogen atom or a hydrocarbon group which has 1-30 carbon atoms and may contain one or more heteroatoms, at least one of R 5 and R 6 being a hydrocarbon group which contains two or more heteroatom-containing groups, and R 1 to R 4 each independently represent a hydrogen atom, a hydrocarbon group which has 1-20 carbon atoms and may contain one or more heteroatoms, or a halogen atom, and two or more groups selected from among R 1 to R 4 may be linked to each other to form an alicyclic ring, an aromatic ring, or a heterocyclic ring which contains one or more heteroatoms selected from among oxygen, nitrogen, and sulfur atoms, in which each of the rings is a 5- to 8-membered ring which may have one or more substituents thereon.]
摘要:
The present invention includes novel ligands which may be utilized as part of a catalyst system. A catalyst system of the present invention is a transition metal - ligand complex. In particular, the catalyst system includes a transition metal component and a ligand component comprising a Nitrogen atom and/or functional groups comprising a Nitrogen atom, generally in the form of an imine functional group. In certain embodiments, the ligand component may further comprise a phosphorous atom. Preferred ligand components are bidentate (bind to the transition metal at two or more sites) and include a nitrogen - transition metal bond. The transition metal - ligand complex is generally cationic and associated with a weakly coordinating anion. A catalyst system of the present invention may further comprise a Lewis or Bronsted acid. The Lewis or Bronsted acid may be complexed with the ligand component of the transition metal-ligand complex.
摘要:
A transition metal ligand complex has the following formula (I), wherein R1 and R2 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms; R3 and R4 (each occurrence) independently represent an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms; R5 represents an aryl, alkyl, or cycloalkyl group having up to 20 carbon atoms, provided that R4 and R5 may be joined to form a cyclic structure; R6 represents an alkyl or aryl group having up to 20 carbon atoms; and Mt represents a transition metal selected from Group 7, 8, 9, 10, 11, or 12 of the Periodic Table of the Elements.
摘要:
Complexes of certain transition metals with certain phosphorous-nitrogen bidentate ligands are part of all of catalyst systems for the polymerization of ethylene. Under certain polymerization conditions novel, highly branched, homopolyethylenes may be produced.
摘要:
A compound represented by the following general formula (1): [In the formula, X represents a nitrogen atom, Y represents a nitrogen atom or a phosphorus atom, R 5 and R 6 each independently are a hydrogen atom or a hydrocarbon group which has 1-30 carbon atoms and may contain one or more heteroatoms, at least one of R 5 and R 6 being a hydrocarbon group which contains two or more heteroatom-containing groups, and R 1 to R 4 each independently represent a hydrogen atom, a hydrocarbon group which has 1-20 carbon atoms and may contain one or more heteroatoms, or a halogen atom, and two or more groups selected from among R 1 to R 4 may be linked to each other to form an alicyclic ring, an aromatic ring, or a heterocyclic ring which contains one or more heteroatoms selected from among oxygen, nitrogen, and sulfur atoms, in which each of the rings is a 5- to 8-membered ring which may have one or more substituents thereon.]
摘要:
Certain complexes containing ligands having a phosphino group, amino group or an imino group, and a second functional group such as amide, ester or ketone, when complexed to transition metals, catalyze the (co)polymerization of olefinic compounds such as ethylene, α-olefins and/or acrylates. A newly recognized class of ligands for making copolymer containing polar monomers using late transition metal complexes is described.
摘要:
Complexes of certain transition metals with certain phosphorous-nitrogen bidentate ligands are part of all of catalyst systems for the polymerization of ethylene. Under certain polymerization conditions novel, highly branched, homopolyethylenes may be produced.