30results about How to "Good reactivity" patented technology

A material for chemical vapor deposition containing an organic silicon-containing compound represented by formula: HSiCl(NR¹R²)(NR³R⁴), wherein R¹ and R³ each represent C1-C4 alkyl or hydrogen; and R² and R⁴ each represent C1-C4 alkyl. The material is particularly suitable as a material for forming a silicon nitride thin film on a substrate by chemical vapor deposition. The use of the material allows for film formation at low temperatures ranging from 300° to 500° C.

The invention provides hydrolysis-resistant polyester polyol which is prepared by the following components in parts by weight: 20-50 parts of aliphatic dicarboxylic acid or carboxylic acid anhydride, 5-20 parts of aromatic dibasic acid or ester, 15-50 parts of polyol, and 0-0.002 parts of assistant. Polyester polyol is good in reactivity, compatibility and hydrolysis resistance. When 10-100% of polyester polyol is added for preparing a flexibly packaged adhesive, the adhesive strength, heat resistance and weather resistance of the adhesive can be improved significantly, and meanwhile the initial adhesion of the adhesive can be enhanced.

The invention discloses a method for preparing sodium silicate from fluorine-containing silica gel. The method comprises the following steps that: active silica is prepared by dissolving, ammoniating and precipitating fluorine-containing silica gel; the active silica is directly added into an alkali dissolution groove, added with metered sodium hydroxide and water, heated and dissolved; after slurry become clear, the slurry is added with activated charcoal accounting for 0.05 to 0.1 percent of the weight (SiO2) of the active silica, reacts for 15 minutes, and then is filtered; and filtrate is concentrated to specified concentration through a concentration groove so as to obtain sodium silicate products with the modulus between 2.2 and 3.6. The method has the advantages of mild process conditions, low production cost, easy realization of industrial production, and recycling of both fluorine and silica.

The invention provides modified alkyd resin and a preparation method thereof. According to the method, alkyd compounds react to obtain the modified alkyd resin. The alkyd compounds comprise, by weight, 25-35 parts of tertiary carbonate glycidyl ester, 38-42 parts of glycerol, 190-230 parts of soya oil acid, 25-35 parts of ethanediol, 240-280 parts of phthalic anhydride, 30-38 parts of trimethylolpropane, 80-120 parts of pentaerythritol, 16-40 parts of agents with water, 1-2 parts of subtraction colour antioxidants, 230-260 parts of diluted solvent, and 0.5-1.5 parts of antiager. Conventional raw materials of the soya oil acid, the pentaerythritol and the like are adopted to prepare the alkyd resin, and the tertiary carbonate glycidyl ester is adopted to modify the alkyd resin, so a paint film performances well in the aspects of gloss, definition, collapse resistance and the like. The invention further provides two-component primer.

The invention relates to an olefin epoxidized catalyst. The olefin epoxidized catalyst is prepared from cobalt oxides serving as active ingredients and mesoporous titanium oxide serving as a carrier by an impregnation method, wherein the load of cobalt is between 0.5 and 15 weight percent, and the balance is the mesoporous titanium oxide serving as the carrier. A preparation method comprises the following steps of: adding olefin, the catalyst and a solvent into a stirring kettle; introducing oxygen or air; reacting the mixture with stirring at the reaction temperature for 4 to 8 hours; filtering the mixture, and separating a solid catalyst out; and rectifying liquid to obtain the olefin epoxide. The invention has the advantages that: the catalyst has high reactivity and high selectivity, oxidants are environmental friendly and have low cost, the reaction condition is mild, and the catalyst can be easily separated from products.

The invention relates to a catalyst for preparing sodium gluconate and preparation method and application thereof, which belongs to a chemical material field. The catalyst contains in mass percent: activated carbon 87-99% and mixture of Pt, Pd and Ni 1-13%, wherein the content of Pt, Pd and Ni are respectively 0.1-8%, 0.1-10%, and 0.1-5%. Compared with the prior art, the method for preparation sodium gluconate by using the catalyst is simple and the products are easily separated. The catalyst has the advantages of high catalyst selectivity, relatively low content of byproduct, long service life, low cost and wide industrial application prospect.

The invention discloses a preparation method of novel water-based light-cured resin. Firstly, metacrylic acid ester containing epoxy groups respectively reacts with acrylic acid and acryloyl chlorideto synthetize diacrylate-monomethyl acrylic ester monomers; then, polyisocyanates react with dithiols at room temperature to obtain a sulfo-polyurethane prepolymer with sulfydryl at the tail end; then, the prepolymer reacts with the diacrylate-monomethyl acrylic ester monomers and the dithiols; finally, hydrophilic groups are introduced by mercaptan carboxylic acid; a sulfo-polyurethane acrylic ester prepolymer is obtained; after a neutralizing agent is used for neutralization, deionized water is added for high-speed dispersion; a water-based light-cured resin dispersoid is obtained. The preparation method has the advantages that the reaction conditions are mild; the conversion rate is high; the gelling reaction of acrylic ester double bonds can be effectively prevented; a large number ofpolymerizable groups exist on the macromolecular chain lateral group, so that the crosslinking density can be effectively improved; a curing membrane with excellent performance is obtained.

The invention relates to an ortho-position mono chlorine substituted N-aryl azaindole compound and a synthetic method thereof. The structural formula of the compound is shown in the specification. R1 is hydrogen, methyl, methyl ester and acetyl; R2 = methoxy, cyclopropyl, bromine and phenyl; according to the method, raw materials are easy to obtain, and 1,2-dichloroethane as a halogen source has best reactivity under the catalysis of rhodium. The reaction has the advantages of simple operation, moderate reaction conditions, and environmental protection, the yield is up to 85%, and the compound has a good development prospect in industrial production.

The invention provides a high-efficiency modification method of a sulfonic acid resin catalyst, and relates to a modification method of a catalyst. The method comprises adding sulfonated polystyrene resin catalyst into a container having alcoholic solvent, introducing the gas with pressure of 0.1-20.0 MPa, and controlling the processing temperature at 50-150 DEG C and the processing time of 0.5-100.0 hours. The polar organic alcohol solvent used as a water-carrying agent and a pore-enlarging agent works together with a structural modifier of sulfonic acid resin. The method uses the polar organic alcohol solvent to heat the sulfonated polystyrene resin catalyst, and the polar organic alcohol solvent used as the water-carrying agent and the pore-enlarging agent works together with the structural modifier of sulfonic acid resin. The polar organic alcohol solvent shows good reaction activity, stability and selectivity of product methyl methoxyacetate.

The present invention provides a novel ruthenium complex which has an excellent catalytic activity in terms of reactivity for an asymmetric reduction of a carbonyl compound and enantioselectivity, a catalyst using the ruthenium complex, and a method for preparing optically active alcohol compounds using the ruthenium complex. The present invention relates to a ruthenium complex having a ruthenacycle structure, a catalyst for an asymmetric reduction consisting of the ruthenium complex, and a method for preparing optically active alcohol compounds using the ruthenium complex.

The invention discloses an underwater reinforced concrete grouting cement which comprises a component A and a component B. The component A comprises the following ingredients in parts by weight: 75-85 parts of epoxy resin 128, 10-15 parts of reactive diluent and 0.5-1.5 parts of 0.5-1.5. The component B comprises 90-110 parts by weight of cashew-oil-modified phenol formaldehyde amine hardener. The preparation method comprises the following steps: S1: mixing; and S2: combining. In the cashew-oil-modified phenol formaldehyde amine hardener, the aromatic ring structure of the phenol formaldehyde amine endows the hardener with excellent chemical resistance, the hydroxyl provides higher bonding strength and excellent reaction activity for quick hardening and low-temperature hardening, and the side chain provides water resistance and toughness; and the cashew-oil-modified phenol formaldehyde amine hardener has the advantages of favorable thixotropy and no flowing during construction, and can reduce the cement consumption. The hardened material has the advantages of excellent mechanical properties, favorable toughness, favorable earthquake resistance, favorable impact resistance, favorable toughness, favorable peel strength, favorable impact resistance and the like.

The present invention provides a novel ruthenium complex which has an excellent catalytic activity in terms of reactivity for asymmetric reduction of a carbonyl compound and enantioselectivity, a catalyst using the ruthenium complex, and a method for preparing optically active alcohol compounds using the ruthenium complex. The present invention relates to a ruthenium complex having ruthenacycle structure, a catalyst for asymmetric reduction consisting of the ruthenium complex, and a method for preparing optically active alcohol using the ruthenium complex.

The invention discloses a methane complete combustion catalyst and a preparation method thereof. The catalyst is composed of NiO/LaNiO3, wherein the NiO is generated on the surface of the LaNiO3 in situ. According to the method disclosed by the invention, in-situ acetic acid chemical etching is carried out on the LaNiO3, and part of LaNiO3 is selectively and preferentially removed, so that the surface becomes more coarse and the specific surface area of a sample is enlarged; and finally, the NiO is generated on the surface of the LaNiO3 in situ and a NiO/LaNiO3 compound methane combustion catalytic material is obtained. The method disclosed by the invention has the advantages of simple process, easiness of obtaining the raw materials, low cost and easiness of realizing industrial production; and NiO in the prepared NiO/LaNiO3 methane complete combustion catalyst is obtained by in-situ reaction, so that the dispersity is good, the methane combustion reaction activity is good and the heat resistance is good. The catalyst can also be used for other catalytic reactions of hydrocarbon conversion, such as oxidization reaction of toluene.

The invention discloses a preparation method of homocyclic peptide Cyclo-[(Asp)5-Gly]. The method includes: (1) connection of resin with protective group equipped aspartic acid to form aspartic acid connected resin; (2) sequential condensation of the aspartic acid connected to resin with the protective group equipped aspartic acid and allylglycine to form linear peptide connected resin; (3) cutting of the linear peptide off the resin and end-to-end cyclization to obtain a cyclic peptide crude product; and (4) purification and preservation of cyclic peptide. The Cyclo-[(Asp)5-Gly] prepared by the invention is a homocyclic peptide structure, has a molecular structure with better regularity, is easier for self-assembly into an ion channel or nanotube, thus serving as a drug carrier, membrane channel, molecular device and the like. The five carboxyl functional groups contained on a side chain endow the product with certain water solubility and bioactivity, also an allyl functional group contained on the side chain endows the product with better reaction activity, so that the product can be used as a precursor reagent for high efficient click reaction. At the same time, the method has the advantages of reasonable process, simple operation, and high synthesis efficiency.

The invention discloses a preparation method for uniform cyclic peptide Cyclo-(Cys)6. The method comprises the following steps: (1) connecting resin with cysteine with protecting group through reaction, thereby forming the resin connected with cysteine; (2) continuously condensing the cysteine connected with the resin and the cysteine with protecting group, thereby forming the resin connected with linear chain peptide; (3) cutting the linear chain peptide off from the resin, connecting end to end and cycling, thereby acquiring a crude product of cyclic peptide; (4) purifying and storing the cyclic peptide. The Cyclo-(Cys)6 prepared according to the invention is of a uniform cyclic peptide structure formed by single amino acid and has the structure similar to the structure of crown ether compound; the molecule structurally has excellent regularity and multidirectional symmetry; the cyclic peptide is easier to be self-assembled into an ion channel or a nanometer tube, so as to be used as a drug carrier, a membrane channel and a molecular device; a side chain contains a plurality of sulfydryl functional groups, so that the cyclic peptide has higher reaction activity and can be used as a precursor reagent for efficient click reaction; and meanwhile, the process is reasonable, the operation is simple and convenient and the compounding efficiency is higher.

The invention provides electrolytic a manganese dioxide with a BET specific surface area of 20 to 60 m²/g, and a volume of at least 0.023 cm³/g for pores with pore diameters of 2 to 200 nm. Also provided is a method for producing an electrolytic manganese dioxide including a step of suspending a manganese oxide in a sulfuric acid-manganese sulfate mixed solution to obtain the electrolytic manganese dioxide, wherein a manganese oxide particles are continuously mixed with a sulfuric acid-manganese sulfate mixed solution, for a manganese oxide particle concentration of 5 to 200 mg/L in the sulfuric acid-manganese sulfate mixed solution. Still further provided is a method for producing a lithium-manganese complex oxide, including a step of mixing the electrolytic manganese dioxide with a lithium compound and heat treating the mixture to obtain a lithium-manganese complex oxide.

The invention provides a carbon-loaded gold atom cluster catalyst and an application thereof in catalytic oxidation of glucose. The catalyst is an activated carbon-loaded gold atom cluster (AuNC) catalyst. The method comprises the following steps: with mercaptan or triphenyl phosphine as a ligand, preparing a gold atom cluster by means of an NaBH4 reduction method; then loading the gold atom cluster to an activated carbon carrier; and applying the carbon-loaded gold atom cluster catalyst to a catalytic oxidation reaction of glucose in an alkaline condition. The catalyst is good in catalytic reaction activity and high in stability, and can be recycled for more than 10 times; in the repeated using process, the activity of the catalyst is not obviously reduced while the selectivity of a product is kept at 98% or above, so that the carbon-loaded gold atom cluster catalyst has a very wide industrial application prospect.

The invention relates to a method of preparing propylene from ethylene and butylenes, mainly solving a problem of the low propylene molar selectivity in the prior art. According to the technical scheme adopted by the method, the ethylene and the butylene are adopted as raw materials, and the raw materials are contacted with a catalyst and reacted in a fixed-bed reactor to produce a propylene-containing effluent at 200-450 DEG C under 0-5 MPa (based on absolute pressure) at a weight space velocity of 1-10 h<-1> with the molar ratio of the ethylene to the butylene being 1-5, wherein the catalyst comprises following components by weight: a) 5-50 parts of molybdenum oxide and b) 50-95 parts of a magnesium oxide carrier. By the technical scheme, the problem is solved well and the method can be used in industrial production of the propylene from the ethylene and the butylene.

A monoclonal antibody, which recognizes at least two amino acids among amino acids located at position 69, position 79, position 81 and position 102 of human midkine, has been found to have excellent reactivity with and excellent neutralizing activity against human midkine. Moreover, the activity of suppressing the proliferation of tumor has been observed in the antibody having excellent neutralizing activity. The use of the antibody of the present invention makes it possible to treat cancer effectively and to detect or purify midkine efficiently.

The invention discloses an isocyanate grafted natural unsaturated phenol white carbon black dispersing agent and a preparation method thereof, natural unsaturated phenol and isocyanate are subjected to a reaction firstly, then the reaction with polyethylene glycol is performed, and the isocyanate grafted natural unsaturated phenol white carbon black dispersing agent is obtained. According to the white carbon black dispersing agent disclosed by the invention, polyethylene glycol chain segments and carbamate groups contained in molecules of the white carbon black dispersing agent can form hydrogen-bond interaction with silicon hydroxyl on the surface of white carbon black, so that white carbon black particles are effectively coated, and the white carbon black can be dispersed; the unsaturated side chain has good compatibility and reaction activity with rubber, and can participate in rubber vulcanization. The invention further discloses application of the white carbon black dispersing agent to rubber products such as steel wire coating rubber, tire body cords and treads. Natural products are used as raw materials, so that the method has the advantages of renewability, environmental protection and abundant resources, and accords with the strategy of sustainable development.

The invention discloses a continuous basalt fiber surface treating agent and a preparation method thereof. The surface treating agent mainly comprises a film-forming agent, a lubricating agent, a coupling agent and a compatilizer. According to the invention, polypropylene grafted maleic anhydride is used as an interfacial compatibilizer, on one hand, MAH can be subjected to an esterification reaction with the surface of the fiber to reduce the polarity of the fiber, and MAH and the fiber are combined together through chemical bonds; and on the other hand, MAH can react with macromolecular freeradicals in polypropylene groups to be embedded into a matrix, so that the fibers and the matrix are connected through PP-g-MAH to form strong interface bonding. Meanwhile, the silane coupling agentis added, so that the affinity and the interface bonding force of PP and fibers are promoted, the process performance of the fibers is improved, and the fiber performance conversion rate and the composite material performance are ensured to be at a relatively high level. The preparation method is mainly used in the field of interface modification of thermoplastic resin and basalt fibers, and can give full play to the excellent effect of the basalt fiber reinforced thermoplastic resin-based composite material.

Provided are a novel metal triamine compound, a method for preparing the same, a composition for depositing a metal-containing thin film including the same, and a method for preparing a metal-containing thin film using the same. The metal triamine compound of the present invention has excellent reactivity, is thermally stable, has high volatility, and has high storage stability, and thus, it may be used as a metal-containing precursor to easily prepare a high-purity metal-containing thin film having high density.

In this application is the expression and purification of a recombinant Plasmodium vivax (SalI) PvMSP-1 p42. The method of the present invention produces a highly purified protein which retains folding and disulfide bridging of the native molecule. The recombinant PvMSP-1 p42 is useful as a diagnostic reagent, for use in antibody production, and as a vaccine.

The invention relates to an aromatic sulfonium salt compound, in particular to triaryl sulfonium salt containing a benzoxazole skeleton and a preparation method and application thereof. The method includes the steps that 2-sulfydryl benzoxazole and 1,4-diiodobenzene are used for conducting a C-S key coupling reaction under microwave radiation to synthesize a phenyl disulfide compound, and then the 2-sulfydryl benzoxazole and the 1,4-diiodobenzene are reacted with high iodised salt, so that the triaryl sulfonium salt containing the benzoxazole skeleton is obtained. The ultraviolet absorption wavelength range of the compound can be widened by more than 290 nm in a red shift mode, the triaryl sulfonium salt containing the benzoxazole skeleton can be used as a kation photoinitiator for an ultraviolet light polymerization composition in an ultraviolet curing coating, and the surface curing ability and the solubility are good.

The invention discloses a high-efficiency preparation method for sulfoxide sulfinyl urea compounds. According to the method, the sulfoxide sulfinyl urea compounds are efficiently prepared through carrying out a heated reaction on sulfoxide sulfinylimide and aralkyl acyl azide, which serve as reaction substrates, for 2 to 5 hours at the temperature of 70 DEG C to 100 DEG C in the absence of any metal element. By the method disclosed by the invention, sulfinyl-containing urea compounds can be efficiently prepared. The method is high in chemoselectivity, high in substrate applicability, simple and convenient in operation, short in reaction time and extremely high in yield, the unique byproduct is nitrogen gas, separation and purification are facilitated, and the product purity is high, so that the method can be applicable to relatively-large-scale preparation.

The invention discloses a preparation method of an aromatic alkenyl compound. The aromatic alkenyl compound comprises thioether and a carbon-carbon double bond substrate, wherein the ratio of the amount of substance of the thioether and the carbon-carbon double bond substrate is 1:(2 to 4); the compound further comprises [Cp*IrCl2]2 and Cu(OAc)2, wherein the ratio of the amount of substance of the[Cp*IrCl2]2 and the thioether is (0.005 to 0.05):1, and the ratio of the amount of substance of the Cu(OAc)2 and the thioether is (1.2 to 2.4):1; the thioether, the carbon-carbon double bond substrate, the [Cp*IrCl2]2 and the Cu(OAc)2 are mixed, and are stirred in solvent for 12 h, and the reaction temperature is 60 to 90 DEG C. The preparation method disclosed by the invention has the advantagesthat the time consumption of a reaction is short; the selectable range of the thioether and the carbon-carbon double bond substrate is wide; the reaction does not need to be performed under oxygen-free and high-pressure conditions; the reaction conditions are mild; the catalyst consumption is less; the method is applied to industrial production; the production cost is saved; the production cycleis shortened; good economy is realized; the controlled synthesis of target products is realized; the controllability is high.

The invention provides a chiral (E)-2-(1,3-diarylallyl) dimethyl malonate compound and a preparation method thereof. The method adopts a chiral Pd catalyst to catalyze (E)- Asymmetric substitution reaction of 1,3-diarylallyl acetate compounds with dimethyl malonate, high enantioselectivity to prepare a series of chiral (E)-2-(1,3-diaryl A method for dimethyl allyl)malonate compound. The reaction starts with (n-allyl)PdCl ₂ Metal complexes generated in situ with chiral P,N-ligands are used as catalysts, and are carried out in various polar and non-polar solvents at room temperature. The present invention has the characteristics of relatively mild reaction conditions, readily available raw materials, high stereoselectivity, wide substrate adaptation range and the like.

The present invention provides a resin complex composed of resin material 10 and other material 20 including metal material or ceramics material, characterized by containing a layer 1 coated with a triazin dithiol derivative and a mixed layer 2 of other material and aluminum, between the resin material 10 and the other material 20. This resin complex exhibits superior junction interface strength, even when ceramics or an iron-based metal is applied as other material.

The invention provides a method for treating a polystyrene sulfonic acid resin catalyst by using an ester solvent, and relates to a method for treating resin catalyst. The method includes the following steps: adding polystyrene sulfonic acid resin catalyst into a container containing ester solvent, introducing gas with the pressure of 0.1-20.0 MPa, and controlling the processing temperature at 35-150 DEG C and the processing time for 0.5-20.0 h. The polar organic ester solvent is used as a water-carrying agent and a pore-enlarging agent works together with a structural modifier of sulfonic acid resin, and the catalyst is a resin-type catalyst containing sulfonic acid functional group which is one or mixing multiple of D-009B, DA-330, NKC-9, D-006, Amberlyst-15, and D-072. The method uses polar organic ester solvent to heat the polystyrene sulfonic acid resin catalyst, and the treated sulfonic acid resin catalyst is used for methylal carbonylation reaction. Compared with the sulfonic acid resin catalyst untreated by the ester, the treated catalyst has good reaction activity, stability and selectivity of the products methoxyacetic acid methyl ester.

The invention discloses a catalytic system for catalyzing decarbonylation of dimethyl oxalate to directly generate dimethyl carbonate. According to the invention, alkali/alkaline earth metal third and fourth main group inorganic acid salt catalysts and carriers thereof are prepared and compounded through a volume impregnation method, an in-situ calcination method and the like, and a catalytic system for catalyzing decarbonylation of dimethyl oxalate to directly generate dimethyl carbonate is obtained. The catalytic system has good reaction activity in the decarbonylation reaction of the dimethyl oxalate, the catalytic system is used for realizing the decarbonylation reaction of the dimethyl oxalate in a liquid phase system, and the product dimethyl carbonate can be prepared with high catalytic selectivity and high conversion rate of the dimethyl oxalate.