933 results about "Diimine" patented technology

The invention discloses an alpha-nickel diimine compound olefin polymerization catalyst, a preparation method and a method for preparing branched polyethylene. The structural formula of the alpha-nickel diimine compound olefin polymerization catalyst is shown as the formula (I) and the formula (II). The alpha-nickel diimine compound olefin polymerization catalyst has simple preparation method and low cost, and ethylene can be catalyzed to polymerize with high activity at a temperature not lower than 80 DEG C to obtain high molecular weight polyethylene. The polyethylene prepared from the alpha-nickel diimine compound olefin polymerization catalyst by catalyzing has high molecular weight, and the molecular weight can reach higher than 102x kg / mol within the range of 0-80 DEG C.

The invention provides a diimine ligand compound as shown in a formula (I) which is defined in the specification and a preparation method thereof. In the formula I, R1 to R10 are same or different and are independently selected from a group consisting of hydrogen, saturated or unsaturated alkyl groups, oxyl groups and halogen. The invention also relates to the preparation method for the diimine ligand compound, a complex containinging the diimine ligand compound, and a preparation method and application of the complex. As a catalyst composition obtained in the invention is applied to ethylene homopolymerization, polymerization activity is high under a high-temperature polymerization condition (50 to 100 DEG C); and an obtained polymer has high molecular weight and narrow molecular weight distribution.

The present invention relates to novel 1,3-diimine copper complexes and the use of 1,3-diimine copper complexes for the deposition of copper on substrates or in or on porous solids in an Atomic Layer Deposition process. This invention also provides a process for making amino-imines and novel amino-imines.

The invention discloses a preparation method for binuclear acenaphthene (alpha-diimine) nickel / palladium catalysts for olefins and application of the catalysts in catalysis of polymerization of olefins. The binuclear acenaphthene (alpha-diimine) nickel / palladium catalysts for olefins in the invention have structural formulas as represented by formula (I) and formula (II) in the specification. The binuclear acenaphthene (alpha-diimine) palladium catalyst for polymerization of olefins has high activity and good stability and can be used for preparing high-molecular-weight hyperbranched polyethylene with bimodal distribution; the binuclear acenaphthene (alpha-diimine) nickel catalyst for polymerization of olefins has high activity and good stability and can be used for preparing polypropylene with a weight-average molecular weight of more than 100,000 and thermoplastic elastomers with elasticity and a high molecular weight. The preparation method for the synthesized catalysts used for polymerization of olefins has the advantages of a simple process, a short synthetic route, low cost, high yield and easy industrialization.

α-Olefins are made in a modified plug flow reactor system by the oligomerization of ethylene using an iron complex of a selected diimine of a 2,6-pyridinecarboxaldehyde(bisimine) or 2,6-diacylpyridine(bisimine) as the oligomerization catalyst. The reactor is modified to add the iron complex at two or more points along the length of the plug flow reactor, the distance between addition points being dependent on the half-life of the active ethylene oligomerization catalyst.

The invention discloses a preparation method of an amido-imine nickel catalyst and application of the amido-imine nickel catalyst to catalyzing vinyl polymerization. The complex has the structures of a formula (I) and a formula (II) shown in the specification, wherein R1 is hydrogen or alkyl, R2 is hydrogen or alkyl, R3 is hydrogen or alkyl, R4 is hydrogen or alkyl, and X is halogen. The preparation method of the complex comprises the following steps of: carrying out condensation reaction on a diketone compound and phenylamine through ketoamine to obtain an diimine compound; then reacting with trimethyl aluminum, and hydrolyzing to obtain an amido-imine ligand; finally carrying out coordination reaction on the amido-imine ligand and (DME)NiX2 under the condition without water and oxygen to obtain a nickel complex. The complex disclosed by the invention has a specific ligand replacement structure and can be used for catalyzing the vinyl polymerization under the activation of modified methyl aluminium oxane or alkyl aluminum, showing the characteristics of living polymerization under specific conditions and obtaining the high-molecular-weight narrowly-distributed branched polyethylene.

A black perylene-based pigment produced by calcining at least one compound selected from the group consisting of diimide derivatives of perylene tetracarboxylic acid and diimide derivatives of perylene diiminodicarboxylic acid, at a temperature of 200 to 600° C. in vacuum or in an inert gas atmosphere, exhibits an excellent blackness, an excellent heat resistance and an excellent weather fastness as well as a high resistance and a high safety.