7 results about "Imidogen" patented technology

The invention belongs to the technical field of high-performance polyolefin catalysis, and discloses an IVB metal complex containing imidazoline (alkyl)-2-imino, a catalyst system and a method for preparing a polymer from the IVB metal complex, the structural formula of the metal complex is shown in the specification, and in the formula, R1-R6 are the same or different substituent groups; the application comprises the following steps: preparing a catalyst system from the metal complex and the cocatalyst, and then carrying out polymerization reaction on ethylene and a large-volume olefin monomer in an inert solvent under the action of gas protection and the catalyst system, the ethylene / large-volume olefin monomer copolymer (or ethylene is subjected to a polymerization reaction in an inert solvent to obtain an ethylene homopolymer, or cycloolefin is subjected to a polymerization reaction in an inert solvent to obtain a cycloolefin homopolymer). The metal complex disclosed by the invention is excellent in temperature resistance, and shows excellent polymerization activity and relatively high insertion rate of a large-volume olefin monomer in a copolymerization reaction system.

The present application relates to a kind of chiral imide group covalent organic framework material and its preparation method, belong to covalent organic framework material technical field.The chiral imide group covalent organic framework material of the present application is with imide bond as connecting unit, with higher thermal stability and chemical stability, and the precise construction of framework chirality is realized by chiral induction strategy, to give material clear chiral characteristics, with important application potential in chiral recognition, chiral separation and asymmetric catalysis etc.;Its preparation is with R / S-tetrahydrofuran-2-methyl acid as chiral inducer, isoquinoline as catalyst, imidazole as reaction medium, and imide bond connecting type covalent organic framework material with crystallinity and significant chiral signal can be prepared by solvothermal reaction.

The invention discloses a three-dimensional network imino covalent organic framework material as well as a preparation method and application thereof, and belongs to the field of materials. A specific number of multi-aldehyde benzene series and multi-amino benzene series are subjected to a Schiff base reaction, in the preparation process, a mode of combining ultrasonic dispersion and mechanical oscillation is adopted to ensure that reactants are uniformly mixed, and efficient polymerization can be realized at room temperature in cooperation with the synergistic catalysis of acetic acid or cesium carbonate and aniline or benzaldehyde; reaction conditions are mild and easy to control, damage of high temperature and high pressure to a material structure is avoided, meanwhile, directional assembly of a covalent organic framework is promoted through a solvent in a specific proportion and solvent types, formed imine bonds are stably combined, functional groups in a molecular structure endow the material with good chemical activity, and the covalent organic framework material is prepared. The accurate reaction of the multi-aldehyde benzene series and the multi-amino benzene series successfully constructs a three-dimensional network spherical structure.

The application discloses a preparation method of an imidolide lithium salt, comprising the following steps: (1) dissolving a lithium salt precursor in an organic solvent; adding Li3N and stirring the reaction at a certain temperature; wherein the lithium salt precursor contains a sulfonyl group; (2) removing the solvent in the reaction solution and drying to obtain the imidolide lithium salt. The method for directly preparing the imidolide lithium salt by using lithium nitride has the highest atomic economic efficiency, a simplified production process and lower cost, and can promote better commercial development of the imidolide lithium salt.

The invention provides a compound monohydrate N-(isopropylimido) guanidine monofluorophosphate and monohydrate N-(isopropylimido) guanidine monofluorophosphate birefringent crystal as well as a preparation method and application thereof, the chemical formula of the compound is (C4N4H11) 2PO3F. H2O, the molecular weight is 346.32, and the compound is prepared by adopting a room temperature solution method; the chemical formula of the crystal is (C4N4H11) 2PO3F. H2O, the molecular weight is 346.32, the crystal belongs to a triclinic system, the space group is shown in the specification, the cell parameters are as follows: a = 7.3372 (6), b = 9.0541 (8), c = 12.6489 (10), alpha = 96.383 (3) degrees, beta = 96.496 (3) degrees, gamma = 97.670 (3) degrees, the unit cell volume is 820.59 (12) 3, and the birefringence is 0.165 at 546 nm. The crystal is grown by adopting a hydrothermal method or a room-temperature solution method, has good chemical stability, can be used for manufacturing polarizing prisms, phase delay devices and electro-optical modulators with various purposes, such as Glan prisms, polarization beam splitters, compensators, opto-isolator circulators, optical modulators and the like, and plays an important role in the fields of optics and communication.

The present application relates to a kind of D-A type imine group conjugated microporous polymer catalyst activated with persulfate and its preparation method and application, the catalyst is prepared by Buchwald-Hartwig coupling reaction of benzothiadiazole monomer and aromatic amine monomer.The catalyst prepared in the present application has high efficient degradation performance to various organic pollutants, wide applicable pH range and confined enhanced mass transfer etc.Characteristics;The catalytic membrane with mass transfer enhancement can be further prepared by the present application.

The present invention relates to a composition, each comprising a Srok-alkylene complex bearing a neutral ligand selected from the group consisting of 1, 10-phenanthroline and 2, 2 '-dipyridyl, and one or more compounds comprising an olefinic double bond. When the complex is not dissociated, the complex can be thermally activated to initiate a metathesis reaction in the composition. The invention also relates to a composition comprising a Srok-alkylene complex bearing a neutral 2, 2 '-bipyridine ligand, and one or more compounds comprising an olefinic double bond, in which the complexes are self-activating.