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1391results about "Sulfide preparation" patented technology

Clethodim amine salt as well as preparation method and application thereof

ActiveCN119390631AExcellent long-term storage stabilityImprove herbicidal activityBiocideOrganic chemistry methodstert-ButylamineWater dispersible
The invention discloses clethodim amine salt as well as a preparation method and application thereof, the clethodim amine salt is clethodim tert-butylamine salt, and the chemical structural formula of the clethodim amine salt is as follows: # imgabs0. The invention discloses the clethodim tert-butylamine salt, and the clethodim tert-butylamine salt is characterized by various means. The prepared clethodim tert-butylamine salt is good in stability, meanwhile, the herbicidal activity of the prepared clethodim tert-butylamine salt is not weaker than that of clethodim, and the stability and the herbicidal activity of the prepared clethodim tert-butylamine salt are both superior to those of other clethodim amine salts reported in documents. The prepared clethodim tert-butylamine salt is low in degradation rate in the high-temperature heat storage process and can be stored for a long time more easily compared with clethodim, and commercial products of the clethodim tert-butylamine salt can be kept more stable in the shelf life. The clethodim tert-butylamine salt prepared by the invention is high in melting point, is solid at normal temperature, can be processed into richer dosage forms as a herbicide, can be expanded to water dispersible granules (WG), wettable powder (WP) and other new dosage forms from the current dosage forms mainly comprising clethodim emulsifiable concentrate (EC), and is good in commercial prospect.
Owner:YIFAN AGRI CHEM PLANT ZHEJIANG PROV

The invention relates to a method for synthesizing fluoroalkyl substituted 4, 4apos; novel method for preparing-diaminodiphenylmethane compound

The invention provides a novel method for synthesizing a fluoroalkyl substituted 4, 4 '-diaminodiphenylmethane compound, which comprises the following steps: under the action of a catalyst, reacting an amine compound with a fluorine-containing aldehyde compound in an organic solvent, and after the reaction is finished, carrying out post-treatment to obtain the fluoroalkyl substituted 4, 4'-diaminodiphenylmethane compound. The method has the advantages of mild reaction conditions, simple operation, high reaction efficiency, cheap and easily available raw materials, good atom economy, no generation of wastes, and large-scale application prospects. In addition, the fluoroalcohol solvent is recycled through simple distillation operation, the cost of a large amount of solvent is effectively saved, the process safety is improved, and efficient and green industrial production is facilitated.
Owner:HAINAN UNIV

(Methyl) acrylate monomer as well as preparation method and application thereof

The invention relates to a (methyl) acrylate monomer as well as a preparation method and application thereof, the structural general formula of the (methyl) acrylate monomer is as follows: # imgabs0 #, n is an integer of 1-20, and R1 is methyl or hydrogen; r2 and R3 are selected from hydrogen, Br, phenyl, methyl or # imgabs 1 #, wherein A1 in the # imgabs 2 # is phenyl or methyl. According to the (methyl) acrylate monomer provided by the invention, the molecular size of the whole monomer is relatively small, the whole monomer has a plurality of branched chain structures, the carbon chain length of a main chain is controllable, and the (methyl) acrylate monomer has high refractive index and good intermiscibility with other components.
Owner:ZHUHAI MOJIE TECH CO LTD

Pleuromutilin derivatives containing cycloalkyl group and preparation methods and applications thereof

Provided herein is a pleuromutilin derivative containing a cycloalkyl group and preparation method and application thereof. Specifically, the pleuromutilin is reacted with p-toluenesulfonyl chloride to obtain an intermediate I, and the intermediate I is reacted with 1-amino-2-methylpropane-2-thiol hydrochloride to obtain an intermediate II, and then the intermediate II is reacted with cycloalkylcarbonyl chloride to obtain a target derivative. The synthesis process of these derivatives is simple, with a high yield and simple purification. These derivatives can effectively inhibit activities of Staphylococcus aureus and Streptococcus, and have superior activities to the marketed Tiamulin, and they also have good antibacterial activities against drug-resistant bacteria. In particular, the treatment effect of the derivative 2 of the target derivative is significantly superior to the clinical drugs Tiamulin and Valnemulin. They are suitable as new antibacterial drugs for prevention and treatment of infectious diseases caused by bacteria in humans or animals.
Owner:LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS

Optical monomer as well as preparation method and application thereof

The invention relates to an optical monomer and a preparation method and application thereof, the structural general formula of the optical monomer is as follows: R1, R2 and R3 are respectively selected from one of hydrogen and C1-C4 alkyl, A1 is selected from one of hydrogen and C1-C4 alkyl, and A2 is C1-C4 alkyl; r4 is selected from one of H, phenyl and C1-C4 alkyl, and A2 is C1-C4 alkyl; and R5 is hydrogen or methyl. The optical monomer provided by the invention contains a (methyl) acrylate group, and has the properties of high refractive index and low volume shrinkage; and a plurality of aromatic rings with high molar refractive index and low molar volume are contained, so that the whole molecule of the whole monomer is extremely high in refractive index. The monomer structure provided by the invention has a plurality of branched chains, the overall molecular weight is small, and the molecules are not easy to agglomerate.
Owner:ZHUHAI MOJIE TECH CO LTD

Peroxide cross-linked polyethylene insulating material for 500kV ultrahigh-voltage direct-current cable and preparation method thereof

PendingCN119320504Aimprove performanceImprove DC breakdown strengthSulfide preparationPolymer scienceUltra high voltage
The invention belongs to the field of preparation of insulating materials, and particularly relates to a peroxide crosslinked polyethylene insulating material for a 500kV ultrahigh-voltage direct-current cable and a preparation method of the peroxide crosslinked polyethylene insulating material. The preparation method of the peroxide cross-linked polyethylene insulation material comprises the following preparation steps: adding a low-density polyethylene base material into a reciprocating mixer for preliminary melting, adding hindered phenol antioxidant modified silicon dioxide for uniform mixing, finally adding dicumyl peroxide, and carrying out heat preservation and absorption at 70-110 DEG C for 10-12 hours, so as to obtain the peroxide cross-linked polyethylene insulation material. The peroxide crosslinked polyethylene insulation material is obtained. The hindered phenol antioxidant modified silicon dioxide improves the direct current breakdown strength of the polyethylene insulating material, so that the peroxide crosslinked polyethylene insulating material has excellent performance.
Owner:ZHEJIANG TAIHU YUANDA NEW MATERIAL CORP LTD

A preparation method and composition of acetoacetic acid, 6-ethylthio-3-heptene-2-one and intermediates thereof

The invention discloses a preparation method and composition of acetoacetic acid, 6-ethylthio-3-heptene-2-one and an intermediate thereof. Diketene is subjected to a hydrolysis reaction in water in the presence of a hydration catalyst to generate acetoacetic acid, wherein the hydration catalyst is soluble in water and is selected from a specific palladium, nickel, ruthenium or rhodium complex; acetoacetic acid and 3-ethylthiobutyraldehyde are subjected to a condensation reaction in the presence of a condensation catalyst to generate 6-ethylthio-4-hydroxy-2-one, and 6-ethylthio-4-hydroxy-3-carboxyl-2-one and 6-ethylthio-3-heptene-2-one may also be generated. The composition comprises the three products generated by the condensation reaction, and the product of the condensation reaction is reacted in a solvent in the presence of a dehydrating agent to prepare 6-ethylthio-3-heptene-2-one. The invention has simple operation, mild reaction conditions, no wastewater pollution to the environment, high atom utilization rate, high overall yield and good purity.
Owner:SHANDONG NHU AMINO ACID CO LTD +1

Nickel-catalyzed olefin asymmetric hydroamination and migration hydroamination method

The invention discloses a method for respectively realizing asymmetric hydroamination and migration hydroamination of olefin by using nickel and ligand combined catalysis, and belongs to the field of organic chemistry and medicinal chemistry. Under the action of a metal nickel source, a chiral ligand, a hydrogen source, an additive and the like, olefin and azide amination reagents protected by different carbonates are used as amine sources to react in an organic solvent, and a series of chiral amine and alkylamine compounds are obtained with excellent enantioselectivity and good yield. Cheap transition metal nickel is used as a catalyst, simple and easily available alkene and carbonic ester protected azide amination reagents are used as raw materials, conditions are mild and simple, functional group compatibility is good, and operation is easy and convenient.
Owner:NANJING UNIV

(Methyl) acrylate monomer, holographic recording medium, preparation method and related device

The invention discloses a (methyl) acrylate monomer, a holographic recording medium, a preparation method and a related device.The structural formula of the (methyl) acrylate monomer is as shown in G1-G5. The preparation method is easy to operate and high in synthesis yield, and further, the holographic recording medium can be applied to holographic recording. The (methyl) acrylate monomer with the structure is introduced into the photopolymer type holographic recording medium, reverse migration of a short polymer chain can be effectively inhibited, and therefore the holographic recording medium with high sensitivity and high diffraction efficiency is obtained, and the invention further provides a preparation method of the holographic recording medium. The invention also provides a volume holographic grating, a holographic optical element and an optical device comprising the holographic recording medium.
Owner:ZHUHAI MOJIE TECH CO LTD

Optical monomer as well as preparation method and application thereof

The invention relates to an optical monomer and a preparation method and application thereof, the structural general formula of the optical monomer is shown as G1, G2, G3 and G4, R1 and R2 are respectively selected from one of H, C1-C10 alkyl and halogen, A1 is C1-C10 alkyl, R3 is hydrogen or methyl, and n is a positive integer selected from 1-10. The optical monomer provided by the invention has a (methyl) acrylate group with high refractive index and low volume shrinkage property, contains a plurality of aromatic rings with high molar refractive index and low molar volume, and also has sulfur atoms with relatively high molar refractive index, so that the whole molecule of the whole monomer has extremely high refractive index. The whole monomer structure in the invention has at least two functionalities, and can realize fast reaction; the monomer structure also contains more branched chains and carbon chains, and molecules are not easy to agglomerate and have a certain migration rate.
Owner:ZHUHAI MOJIE TECH CO LTD

(Methyl) acrylate monomer as well as preparation method and application thereof

The invention relates to a (methyl) acrylate monomer as well as a preparation method and application thereof, the structural general formula of the (methyl) acrylate monomer is shown as G1, G2 and G3: # imgabs0 #, r2 and R3 are selected from hydrogen, phenyl, methyl or # imgabs 1 #, wherein A1 in the # imgabs 2 # is phenyl or methyl. According to the (methyl) acrylate monomer provided by the invention, the molecular size of the whole monomer is relatively small, the whole monomer has a plurality of branched chain structures, the flexibility is good, the refractive index is high, and the intermiscibility with other components is good.
Owner:ZHUHAI MOJIE TECH CO LTD

Bioprosthetic valve modifier, polymer modified bioprosthetic valve and preparation method of bioprosthetic valve modifier and polymer modified bioprosthetic valve

The invention discloses a bioprosthetic valve modifier, a polymer-modified bioprosthetic valve and a preparation method, and belongs to the technical field of preparation of medical materials and medical instruments. The bioprosthetic valve modifier is formed by polymerizing a diclofenac monomer containing a thioketal group, a hydrophilic monomer, a cross-linking agent, an active ester monomer and an initiator. The preparation method of the polymer-modified bioprosthetic valve comprises the following steps: sequentially soaking a bioprosthetic valve material in a glutaraldehyde solution, an amino cationic polymer solution and a nanogel solution, and finally soaking the bioprosthetic valve twice with an active ester compound solution to obtain the polymer-modified bioprosthetic valve. According to the polymer-modified bioprosthetic valve prepared by the invention, the nanogel is modified on the surface of the valve in a covalent bond manner, so that the polymer-modified bioprosthetic valve has good stability and long-term effect, has good biocompatibility and anti-inflammatory, anti-coagulation and anti-calcification effects, and has a good medical application prospect.
Owner:WEST CHINA HOSPITAL SICHUAN UNIV

4, 4, 4apos; -bis (omega-alkenyl thioether) diphenyl sulfide monomer, photopolymer type holographic recording medium, preparation method of photopolymer type holographic recording medium, grating and optical device

The invention discloses a 4, 4 '-bis (omega-alkenyl thioether) diphenyl sulfide monomer and a preparation method, the structural general formula of the 4, 4'-bis (omega-alkenyl thioether) diphenyl sulfide monomer is shown in the specification, n represents the number of methylene and is a positive integer, n = 1-10, the refractive index of a polymer obtained after the monomer and 4 '4-dimercapto diphenyl sulfide are polymerized is larger than 1.65 and smaller than 1.8, diffraction efficiency is remarkably improved, the preparation method is easy to operate, and the preparation method is suitable for industrial production. The invention further provides a photopolymer type holographic recording medium containing the monomer and a preparation method of the photopolymer type holographic recording medium, the sensitivity of the holographic recording medium is larger than 100 cm / mJ, the diffraction efficiency of a recording grating is larger than 95%, the refractive index modulation degree is larger than 0.1, the shrinkage rate is lower than 1%, and the preparation method is simple, controllable and suitable for industrial production. The invention also provides a volume holographic grating containing the holographic recording medium, a holographic optical element and an optical device.
Owner:ZHUHAI MOJIE TECH CO LTD

Optical monomer as well as preparation method and application thereof

The invention relates to an optical monomer and a preparation method and application thereof, the structural general formula of the optical monomer is shown as G1, G2, G3, G4, G5 and G6, R1 represents hydrogen, phenyl, halogen and C1-C4 alkyl, and A1 represents C1-C4 alkyl or phenyl; r2 represents hydrogen or methyl; n is a positive integer selected from 1-10. The optical monomer provided by the invention contains a plurality of aromatic rings with high molar refractive index and low molar volume, and also contains sulfur atoms with relatively high molar refractive index, so that the whole molecule of the whole monomer is extremely high in refractive index. The monomer structure provided by the invention has a plurality of branched chains, the overall molecular weight is small, and the molecules are not easy to agglomerate.
Owner:ZHUHAI MOJIE TECH CO LTD

2, 3-disubstituted naphthoquinone compound as well as application and preparation method thereof

The invention belongs to the technical field of veterinary drugs, and particularly relates to a 2, 3-disubstituted naphthoquinone compound as well as application and a preparation method thereof, the general formula of the 2, 3-disubstituted naphthoquinone compound is # imgabs0 #, and X is selected from C, NH, O and S; wherein when X is selected from C, an X-R1 substituent is represented as an aryl substituent; when X is selected from NH, R1 is selected from a hydrogen atom, C1-6 alkyl, C3-6 cycloalkyl, substituted aryl, substituted benzyl and substituted acyl; when X is selected from O, R1 is selected from a hydrogen atom, C1-6 alkyl, C3-6 cycloalkyl, substituted benzyl and substituted acyl; when X is selected from S, R1 is selected from C1-6 alkyl, substituted aryl and substituted benzyl; r2 is selected from C1-16 alkyl, substituted aryl, Ra-(CH2) n-, and Ra-CO-(CH2) n-; the series of compounds are novel in structure and good in antibody ectoparasite activity, are successfully applied to the field of veterinary drugs, and solve the long-standing problems of safety and toxicity; the synthesis process is simple, the conditions are mild, and various 2, 3-disubstituted naphthoquinone compounds can be efficiently prepared.
Owner:LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS

Thiosynergist, antioxidant composition comprising the same and poly-MER composition comprising the antioxidant composition

PCT designated stage expiredWO2025040076A2Sulfide preparationPolymer scienceThio-
This disclosure relates to a liquid thiosynergist, to an antioxidant composition comprising the same, to a polymer composition comprising the antioxidant composition, to use of the antioxidant composition for stabilizing polymer, and to a process of synthesizing the liquid thiosynergist.
Owner:BASF SE +1

Clethodim diamine salt, preparation method and application thereof

The invention discloses clethodim diamine salt as well as a preparation method and application thereof. The stability of the clethodim diamine salt (clethodim 1, 4-butanediamine salt, clethodim 1, 5-pentanediamine salt and clethodim 1, 6-hexamethylenediamine salt) provided by the invention is superior to that of clethodim and clethodim monoamine salt (such as clethodim tert-butylamine salt); meanwhile, the herbicidal activity of the clethodim diamine salt (clethodim ethylenediamine salt, clethodim 1, 4-butanediamine salt and clethodim 1, 5-pentanediamine salt) is superior to that of clethodim tert-butylamine salt, and the herbicidal activity of the clethodim 1, 5-pentanediamine salt is superior to that of clethodim. Most clethodim diamine salt is low in degradation rate in the high-temperature heat storage process and easier to store for a long time, the clethodim diamine salt is higher in melting point than clethodim monoamine salt (such as clethodim tert-butylamine salt), granulation and smashing are more convenient, the clethodim diamine salt can be used as a herbicide to be processed into solid dosage forms such as water dispersible granules and the like, the physical performance of the preparation is better, and the preparation has good application prospects. The commercialization prospect is good.
Owner:YIFAN BIOTECHNOLOGY (SHANGHAI) CO LTD

Process for preparing aromatic amines from aryl chlorides

The present invention relates to process for preparing an aromatic amine (I) which comprises reacting an aromatic chloride (II) with an aminating agent (IV) selected from ammonia, an aliphatic or cycloaliphatic primary or secondary amine in the presence of a copper catalyst comprising copper and a ligand of the formula (III) or a salt thereof (III) where X, Y are identical or different and selected from the group consisting of halogen, OH, OR1, NH2, NHR2, N(R2)2, SH, SR3, SO3H, S(O)kR4 with k being 1, 2 or 3, where R1, R2, R3, R4 independently of each other are selected from the group of C1-C10 alkyl, C1-C10 haloalkyl, C3-C10 cycloalkyl, C6-C10 aryl and C6-C10 aryl-C1-C4-alkyl, where aryl in the last two mentioned moieties is unsubstituted or substituted by 1, 2, 3, 4 or 5 radicals Ra, where Ra is selected form F, CN, NO2, OH, SO3H, CH3, CF3 and OCH3; Z are both H or together form –CH=CH-.
Owner:BASF SE

A 2,3-disubstituted naphthoquinone compound and its uses and preparation method

This invention belongs to the field of veterinary drug technology, specifically relating to a 2,3-disubstituted naphthoquinone compound, its uses, and a preparation method. The 2,3-disubstituted naphthoquinone compound has the general formula: where X is selected from C, NH, O, and S; where X is selected from C, the X-R1 substituent represents an aryl substituent; when X is selected from NH, R1 is selected from hydrogen atom, C1-6 alkyl, C3-6 cycloalkyl, substituted aryl, substituted benzyl, or substituted acyl; when X is selected from O, R1 is selected from hydrogen atom, C1-6 alkyl, C3-6 cycloalkyl, C4-6 cycloalkyl, C5-6 cycloalkyl, C6-6 cyclo ... 3-6 cycloalkyl, substituted benzyl, substituted acyl; when X is selected from S, R1 is selected from C1-6 alkyl, substituted aryl, substituted benzyl; R2 is selected from C1-16 alkyl, substituted aryl, Ra-(CH2)n-, Ra-CO-(CH2)n-; This series of compounds has novel structures, excellent antiparasitic activity, and has been successfully applied in the field of veterinary drugs, solving long-standing safety and toxicity problems; its synthesis process is simple, the conditions are mild, and it can efficiently prepare a variety of 2,3-disubstituted naphthoquinone compounds.
Owner:LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS

Preparation method of polythiol compound and optical resin lens

PendingCN119462449AExcellent long-term storage stabilitylow costSulfide preparationOptical elementsPolymer sciencePolyol
The invention discloses a preparation method of a polythiol compound and an optical resin lens, and belongs to the technical field of new organic materials. The preparation method of the polythiol compound comprises the following steps: mixing polyhydric alcohol as shown in a formula 1, thiourea and hydrochloric acid for reaction, and hydrolyzing to obtain the polythiol compound as shown in a formula 2, wherein the total content of sulfides and polysulfides in the thiourea is less than 0.5%. According to the preparation method, by-products are reduced by controlling the total content of sulfides and polysulfides in the raw material thiourea, so that the long-term storage stability of the chromaticity of the polythiol compound is improved. An optical resin lens prepared from the polythiol compound is stable and qualified in yellow index, low in cost, suitable for large-scale industrial production and capable of meeting increasing social requirements.
Owner:EFIRM NEW MATERIAL CO LTD

Optical monomer and preparation method thereof, composition, resin material and preparation method thereof

The invention discloses an optical monomer and a preparation method thereof, a composition, a resin material and a preparation method thereof. The optical monomer provided by the invention comprises a quaternary carbon structure and a side chain connected with the quaternary carbon structure through an ester bond. The side chain comprises a thioether chain segment connected with an ester bond, an aromatic group connected with the thioether chain segment and an epoxy group connected with the thioether chain segment. The optical monomer provided by the embodiment of the invention takes a quaternary carbon structure as a core skeleton, and a side chain sequentially comprises an aromatic group, a thioether chain segment and a terminal epoxy group. A thioether structure with high polarizability and an aromatic group are introduced into the molecular design of the optical monomer, so that the refractive index and the optical transparency of a resin material are remarkably improved. And the rigidity of the epoxy aromatic ring is beneficial to improving the thermal stability and mechanical strength of the resin material. The epoxy group at the tail end can react with conventional epoxy resin to form a compact network structure, so that the stability of the resin material is improved, and the yellowing tendency is reduced.
Owner:ZHUHAI MOJIE TECH CO LTD

Dimethyl sulfoxide synthesis system and synthesis method

A dimethyl sulfoxide synthesis system and a synthesis method, the system comprising: a fixed bed reactor (2) used to synthesize dimethyl sulfide, and an oxidation reactor (4) used to synthesize dimethyl sulfoxide. An external intensification unit (9) is disposed outside the oxidation reactor (4), the external intensification unit (9) comprising a first intensification reactor (901) and a second intensification reactor (902), the first intensification reactor (901) being disposed above the second intensification reactor (902), the first intensification reactor (901) being connected to a discharge port at a bottom end of the fixed bed reactor (2), the second intensification reactor (902) being connected to a nitrogen dioxide or oxygen storage tank (13), a connecting pipe (903) being disposed between the first intensification reactor (901) and the second intensification reactor (902), and a static mixer (904) being disposed in the connecting pipe (903).
Owner:NANJING YANCHANG REACTION TECH RES INST CO LTD

Bisanthene aromatic ring bay region C-H nucleophilic substitution reaction method and application thereof

The invention provides a bissanthin aromatic ring bay region C-H nucleophilic substitution reaction method and application thereof, and belongs to the field of organic synthesis methodology. According to the reaction, bissanthin is used as a raw material, dichloromethane and acetonitrile are used as solvents, and the bissanthin is oxidized by nitrite hexafluorotellurate and respectively reacts with nucleophilic reagents such as carbon anions, oxygen-containing reagents, sulfur-containing reagents, chlorine-containing reagents, nitrogen-containing reagents, phosphorus-containing reagents and cyano groups in one step to synthesize a series of bissanthin bay area modified functionalized products; when the reaction method is further applied to the nucleophilic substitution reaction of two molecules, namely perylene (Perylene) and N, N '-di (1, 3-diisopropyl benzene)-3, 4, 9, 10-perylene dicarboximide (PDI), good universality is shown, and the reaction method can be applied to the nucleophilic substitution reaction of two molecules, namely perylene (Perylene) and N, N'-di (1, 3-diisopropyl benzene)-3, 4, 9, 10-perylene dicarboximide (PDI). The method is mild in reaction condition, does not need to introduce transition metal as a catalyst, is easy in product separation and purification, and has the advantages of low cost, high efficiency and greenness; the series of functionalized derivatives constructed by the method can provide important intermediates for synthesis of larger polycyclic aromatic hydrocarbon molecules of the system; the method has a good industrial production prospect.
Owner:INNER MONGOLIA UNIVERSITY

Preparation and application of halogenated acrolein and derivative thereof

The invention discloses a preparation method of halogenated acrolein, which comprises the following steps: a compound shown as a formula V is prepared into a compound shown as a formula I under the combined action of a catalyst and an oxidizing agent, and the synthesis route is as follows: # imgabs0 #, and X is halogen. The method for preparing halogenated acrolein disclosed by the invention is mild in condition, high in yield and easy to industrialize. The invention further discloses application of the compound shown in the formula I in preparation of isoxazole, 2-hydroxypyrimidine and homopiperazine.
Owner:PAPANNA (BEIJING) TECH CO LTD

Acrylate monomer and preparation method thereof, photopolymer composition and volume holographic grating and preparation method thereof

The invention discloses an acrylate monomer and a preparation method thereof, a photopolymer composition and a volume holographic grating and a preparation method thereof, the acrylate monomer provided by the invention is simple in structure and rich in expandable structure, so that the synthesis steps are simple and convenient, the cost is reduced, a relatively high refractive index of the monomer is realized on the basis of introduction of more sulfur atoms into the monomer, and the volume holographic grating has a good application prospect. In the subsequent photopolymerization process, the difference between the refractive index of the generated polymer and the refractive index of the common matrix is larger, so that the preparation of the holographic grating with high-refractive-index modulation degree can be realized.
Owner:ZHUHAI MOJIE TECH CO LTD

Tridentate pincer manganese complex, preparation method thereof and application in alcohol dehydrogenation olefination reaction

The present invention discloses a tridentate pincer manganese complex, a preparation method thereof and an application thereof in alcohol dehydrogenation olefination reaction. The tridentate pincer manganese complex has the following structure: #imgabs0# wherein R is selected from a group containing C1-C 20 The method for preparing the tridentate manganese pincer complex comprises: using 8-aminoquinaldine as a raw material to synthesize a tridentate pincer ligand through multiple steps, and coordinating the tridentate pincer ligand with pentacarbonyl manganese bromide to prepare a novel tridentate manganese pincer complex. The tridentate manganese pincer complex prepared by the present invention has a novel skeleton structure, a simple and efficient preparation method, and high practicality. The obtained manganese complex has high activity as a catalyst in the dehydrogenation olefination reaction of alcohols and has very important application prospects.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI +1

Photocuring composition and application thereof

The invention provides a photocuring composition and application thereof. The composition comprises the following components: (a) at least one benzoyl formate compound; (b) at least one ethylenically unsaturated photopolymerizable compound; the benzoyl formate compound is obtained by reacting a compound shown in a general formula (I) with a compound shown in a general formula (II) or a general formula (III), or is obtained by further reacting the compounds shown in the general formula (I), the general formula (II) and the general formula (III) with a compound with an end-capped substituent group for end capping. The sensitivity of the obtained product is not reduced compared with that of existing small molecules, and the hardness of the product is improved under LED curing.
Owner:CHANGZHOU TRONLY ADVANCED ELECTRONICS MATERIALS CO LTD +2

Chiral pyridinium salt carbonyl catalyst as well as preparation method and application thereof

The invention relates to a chiral pyridinium salt carbonyl catalyst as well as a preparation method and application thereof, the structural general formula of the catalyst is # imgabs0 #, in the formula, R1 is # imgabs1 #, X1-6 comprises N or C-R6-11; r2, R4 and R6-11 comprise hydrogen, alkyl of C1-24, alkyloxy, # imgabs2 # CO2Rd, halogen, nitryl, cyano or trifluoromethyl; r3 comprises substituted or unsubstituted C1-24 alkyl groups, substituent groups comprise halogen, C1-10 alkyl groups, C3-10 cycloalkyl or aryl groups, C1-8 carbonyl groups, C1-8 sulfonyl or phosphoryl groups, and C1-10 alkoxy or amido groups, and carbonyl groups comprise aldehyde groups, ketone carbonyl groups, ester carbonyl groups, carboxyl groups or amido groups; and R5 has the structural formula of # imgabs3 # X <-> which is an anion. Compared with the prior art, the catalyst disclosed by the invention is used for a bionic aldol reaction of amino acid derivatives to synthesize a series of beta-hydroxyl-alpha-amino acid compounds with extremely high enantioselectivity.
Owner:SHANGHAI NORMAL UNIVERSITY

Novel ionizable lipid as well as preparation method and application thereof

The invention provides novel ionizable lipid as well as a preparation method and application thereof. The structural formula is shown as a formula (I). The ionizable lipid compound contains urea and a bioisostere structure thereof, the encapsulation effect of the ionizable lipid is improved through hydrogen bonds formed by squaramide, urea and thiourea structures and nucleic acid, and the immunogenicity of the ionizable lipid is reduced. The nanoparticles prepared from the ionizable lipid are high in encapsulation efficiency, low in PDI and wide and stable in process adaptability. # imgabs0 #
Owner:SHENZHEN MAGICRNA BIOTECHNOLOGY CO LTD

Bio-based plasticizer and preparation method thereof, rubber composition and rubber product

PendingCN119954699ASulfide preparation
The invention relates to the technical field of rubber, in particular to a bio-based plasticizer and a preparation method thereof, a rubber composition and a rubber product. The preparation method of the bio-based plasticizer provided by the invention comprises the following steps: reacting bio-based oil, a sulfur-containing compound, a photoinitiator and an organic solvent to obtain the bio-based plasticizer, the bio-based oil comprises grease containing unsaturated double bonds; the structural general formula of the sulfur-containing compound is R-SH; in the formula, R is selected from any one of substituted or unsubstituted alkyl and aralkyl of C1-C18. According to the preparation method of the bio-based plasticizer disclosed by the invention, the bio-based oil is modified by utilizing the sulfur-containing substance, and the content and activity of unsaturated double bonds in the bio-based oil are reduced, so that the influence of the unsaturated double bonds on a rubber vulcanization process is reduced, and the thermal stability and mechanical property of rubber are favorably improved; in addition, the prepared bio-based plasticizer has relatively low kinematic viscosity, and is beneficial to improving the operating performance of a rubber material.
Owner:BEIJING RED AVENUE INNOVA +1