95 results about "Halogen bond" patented technology

This invention relates to a catalyst component for olefinic polymerization and its catalyst, said catalyst component comprises titanium compoumd with at least one Ti- halogen bond loaded on MgCl2nROH adduct and reaction product of two electronic doner compounds,wherein electronic doner compound A is chosen from poly alcohol ester compounds, and electronic doner compound B is chosen from ester,ether, ketone, amine and silicane compounds except compound A.The invented catalyst has high catalytic activity for olefinic polymerization ,in particular propylene polymerization, and wider molecular weight distribution.

There are provided;

• [0001]
  • (i) a solid catalyst component obtained by contacting a trivalent titanium atom-containing solid catalyst component precursor (C) with a halogeno compound (A) of the 13 or 14 group of elements in the periodic table of the elements and an electron donor (B), or a solid catalyst component obtained by contacting an intermediate product with a titanium-halogen bond-carrying compound (D), the intermediate product being obtained by contacting the solid catalyst component precursor (C) with a halogeno compound (A′) of the 14 group of elements in the periodic table of the elements and the electron donor (B), or a solid catalyst component comprising a magnesium atom, a titanium atom, a halogen atom and an electron donor and having a relative surface area of not more than 30 m²/g, the catalyst component being superior in a particle form, and
  [0002]
  • (ii) a catalyst comprising the solid catalyst component and an organoaluminum compound, the catalyst being high in polymerization activity.

The invention discloses fluorinated graphene containing semi-ionic C-F bonds and a secondary sodium battery adopting the fluorinated graphene as the cathode. The fluorinated graphene cathode of the secondary sodium battery is prepared by steps of: subjecting graphite fluoride to thermal intercalation with chloroform so that halogen bonds are formed between fluorine atoms and chlorine atoms, and therefore some C-F bonds convert into the semi-ionic C-F bonds; subjecting the graphite fluoride to ultrasonic stripping; centrifuging to remove the unreacted graphite fluoride raw material; subjecting the superstratum solution after centrifugation to suction filtration to obtain the fluorinated graphene; and adding a conductive agent and an adhesive into the fluorinated graphene according to a certain ratio. The secondary sodium battery adopting the fluorinated graphene containing the semi-ionic C-F bonds as the cathode shows a significant charge-discharge platform, and has advantages of high reversible specific capacity and stable discharging platform. The fluorinated graphene containing the semi-ionic C-F bonds is a novel cathode material of the secondary sodium batter.

An object is to provide a highly pure aminosilane having a reduced amount of halogen impurity, which is suitable for applications of electronic materials and others. More specifically, provided is a method for preparing a purified aminosilane comprising at least the steps of treating, with an alkyl metal reagent, an aminosilane having a Si—N bond but not a Si-halogen bond and having halogen impurity content of 1 ppm (w/w) or more; and distilling the treated aminosilane.

The invention provides an organic eutectic gain material as well as a preparation method and application thereof in laser performance. Different intermolecular interactions of the organic eutectic gain material cause the organic eutectic gain material to be assembled into a specific micro-nano structure (such as a micron sheet and a micron ring); the organic eutectic gain material with the specific micro-nano structure can be used as a high-quality optical resonant cavity to provide optical feedback and mode selection for eutectic stimulated radiation; the interaction between halogen bonds ofthe organic eutectic gain material only brings about weak charge transfer, so that a favorable four-energy-level structure is reserved in eutectic to realize final laser radiation; meanwhile, the intermolecular interaction of the organic eutectic gain material can be regulated and controlled by changing a halogen bond donor, so that the assembly structure and the energy level structure are changed, and finally, the regulation and control on eutectic laser properties are realized. Eutectic optically pumped laser radiation is achieved for the first time in the material, and the laser propertiesare adjusted by changing the halogen bond donor.

There are disclosed a process for producing a solid catalyst component and a catalyst for α-olefin polymerization, and a process for producing an α-olefin polymer, wherein the process for producing a solid catalyst component comprises the steps of:

• • (1) reducing a specific titanium compound with an organomagnesium compound in the presence of an organosilicon compound having an Si—O bond (and an ester compound), thereby obtaining a solid product, and
  • (2) contacting the solid product with a halogeno compound of the 14 group element, at least one member selected from the group consisting of an electron donor compound and an organic acid halide, and a compound having a Ti-halogen bond, thereby obtaining the solid catalyst component.

A process for preparing curable oligomeric and/or polymeric polysilazanes comprises (a) forming at least one dihalosilane-base adduct by reacting at least one dihalosilane with at least one base; (b) optionally, combining at least one dihalosilane-base adduct and at least one organodihalosilane; and (c) carrying out ammonolysis of at least one dihalosilane-base adduct or of the resulting combination of at least one dihalosilane-base adduct and at least one organodihalosilane; with the proviso that the base (1) is used for the dihalosilane-base adduct formation in a limited amount that is less than or equal to twice the stoichiometric amount of silicon-halogen bonds in the dihalosilane or (2) is used for the dihalosilane-base adduct formation in excess of this limited amount and, prior to the ammonolysis, the total amount of the resulting reacted and unreacted base is reduced to no more than this limited amount.

The invention discloses a halogen bond eutectic material, and a preparation method and application thereof. The preparation method comprises: dissolving a first component material and a second component material in an organic solvent to obtain a mixed solution, adding the mixed solution to a substrate in a dropwise manner, and standing for 10-60 min in a dark place to volatilize the organic solvent so as to obtain the halogen bond eutectic material. According to the invention, a simple, short-time-period and low-cost solvent volatilization method is adopted, a plurality of halogen bond eutectic materials with a molar ratio of 2:1 or 1:1 are obtained, and the yield of the growth preparation process is 100% completely.

The invention belongs to the field of supramolecular gel, and more particularly relates to a visible light response supramolecular gel and a preparation method thereof. The supramolecular gel comprises a gel factor and an organic solvent, and the supramolecular gel can undergo reversible gel-sol phase transformation under visible light irradiation, wherein the gel factor comprises a halogen bond receptor and a halogen bond donor. The halogen bond receptor contains an electron donating group. The halogen bond donor is a visible light responsive azobenzene derivative in which an electron withdrawing or electron donating group is introduced at the ortho or meta position. According to the invention, through improving the structure of the key gel factor, a halogen bond driven visible light response supramolecular gel is prepared, and compared with the prior art, the problems that the ultraviolet light response supramolecular gel system is not healthy and environment-friendly enough and thevisible light response supramolecular gel system has too few selectable driving force types, thus limiting further development and practical application can be effectively solved.

The invention provides an alkyl phosphonate preparing method. The method comprises: performing an Arbuzov reaction on compound A and compound B in a continuous reaction apparatus, and continuously discharging the product obtained from the reaction from the continuous reaction apparatus during the reaction procedure, to obtain alkyl phosphonate. The reaction temperature in the reaction procedure is T1; either of compound A and compound B having a lower boiling point has a boiling point at a standard atmosphere pressure to be T2; T1 is higher than T2 by 10-40 DEG C; and the reaction pressure in the reaction procedure is 0.5-2.0 MPa. The preparing method in the invention may use halohydrocarbon having large steric hindrance and lower polarizability of carbon-halogen bond as compound A, thereby effectively expanding a selection range of substrate, and correspondingly expanding the types of alkyl phosphonate prepared by using the Arbuzov reaction.

The invention relates to a photo-reduction method for carrying out degradation on organic halides by using carboxylic acids or carboxylates, and is characterized in that an ion-pair complex is generated through the interaction between the carboxylate radicals in micromolecular carboxylic acids or carboxylates and the halogen bonds of organic halides; the ion-pair complex produces a new absorption band in a visible region, then under the irradiation exciting of a visible light source, the excited ion-pair complex has an electron transfer, the oxygen atoms in the micromolecular carboxylate radicals transmit electrons to the halogen atoms of the organic halides, and after organic or inorganic alkalis are added, the electron-donating capacity of the oxygen atoms in the micromolecular carboxylate radicals is strengthened, so that the reaction rate can be accelerated; and while receiving electrons, the organic halides extract hydrogen atoms from a dissolvent, and after carrying out dehalogenation reduction on the organic halides subjected to hydrogen extraction, an easily-processed low halide or complete de-halogenated product (the number of halogen atoms thereof is reduced) is obtained, thereby achieving the purpose of effectively degradating the organic halides. The method provided by the invention can be performed at normal temperature, and can greatly improve the solar energy utilization ratio without secondary pollution, therefore, the method has a wide application prospect.

The present invention relates to a process for the production of propylene polymers in the presence of a blend of a first Ziegler-Natta catalyst, which comprises a titanium compound having at least one titanium-halogen bond and a diether compound as internal electron donor, and a second Ziegler-Natta catalyst, which comprises a titanium compound having at least one titanium-halogen bond and a succinate compound as internal electron donor.

The invention discloses a monomer N-(p-acetenyl)-phenyl-2-X-tetrafluorobenzamide (X=F, Cl, Br and I) for identifying halogen anions, a polymer, and a method for preparing the monomer and the polymer. The method comprises the following steps: by taking 4-ethynylaniline and hexafluorobenzoic acid as main initial raw materials, taking N,N-dimethyl-4-aminopyridine as a catalyst, finally synthesizing a target small molecule compound N-(p-acetenyl)-phenyl-2-X-tetrafluorobenzamide; and by taking a precious metal complex Rh+(2,5-nbd)[(eta6-C6H5)B-(C6H5)3] (triphenyl-eta6-phenylboron-2,5-norborneol diene rhodium, Rh(nbd)BPh4) as a catalyst, thereby obtaining the poly-N-(p-acetenyl)-phenyl-2-X-tetrafluorobenzamide by virtue of a coordination polymer orientation method. The obtained small molecule monomer and polymer molecular structures simultaneously contain hydrogen bond donors and halogen bond donors, and the monomer and polymer can identify the halogen anions by virtue of coordination of hydrogen bonds and halogen bonds. Meanwhile, the preparation method has the advantages of the reaction conditions are mild, the reaction process is simple, the method is easy to control, the yield of the obtained product is high and the like.