41 results about "Alkyl side chain" patented technology

An alkyl pendant polymer-type non-silicone, non-fluorine release agent resin is applied to the surface of a substrate film without using organic solvents, forming a coating and release layer without the coating liquid being repelled from the surface of the substrate film. [Solution] A method for manufacturing a release film comprises, in this order, the steps of obtaining a release film precursor by applying an aqueous dispersion of a non-silicone, non-fluorine release agent resin to the first surface 11a of a base film 11 having a first surface 11a and a second surface 11b, the first surface 11a of the base film 11 having a polyester resin on the first surface 11a, and drying the release film precursor, wherein the aqueous dispersion comprises water, a release agent resin which is a non-silicone, non-fluorine release agent resin and is an alkyl pendant polymer, and a surfactant, the surfactant comprising an acetylene glycol-based nonionic surfactant having an HLB value of 11 or more.

The invention provides a high-strength and high-toughness photocuring outer coating for a thin-diameter polarization-maintaining optical fiber. The coating comprises the following components: 60-80% of a modified acrylate oligomer; 20-40% of an acrylate monomer; 0.5 to 6% of a photoinitiator; 0.05-1% of an antioxidant; the modified acrylate oligomer is formed by polymerizing oligosaccharide, alkyl acid, (methyl) acrylic acid, an acid catalyst and a polymerization inhibitor, the main chain of the oligosaccharide has a continuous pyranoid ring structure and the polymerization degree is 2-10, and carboxyl in the alkyl acid and hydroxyl on a pyranoid ring are subjected to esterification reaction so as to be grafted on the oligosaccharide to form an alkyl side chain. The high-strength and high-toughness photocuring outer coating for the small-diameter polarization maintaining optical fiber has the advantages of high strength and high flexibility, the curing speed is high by adopting a photocuring mode, and the raw materials are cheap and easy to obtain.

The invention discloses a fluorine-free transparent polymer material with high oxygen permeability. The fluorine-free transparent polymeric material comprises at least one silicone cage compound having at least one polymerizable hanging group and up to seven side chains, at least one acrylic compound, at least one acrylate-functionalized compound, and a styryl tris (trimethylsiloxy) silane. Any compound of the transparent polymeric material does not contain elemental fluorine. The first polyhedral oligomeric silsesquioxane (POSS) monomeric silicone cage has one polymerizable methacrylate suspending group and seven isoalkyl side chains, and the second polyhedral oligomeric silsesquioxane (POSS) monomeric silicone cage has two polymerizable methacrylate suspending groups and six isoalkyl side chains. The transparent polymeric material has a Dk of about 150 and a Shore D hardness greater than 70.

The application discloses an alkyl side chain substituted aromatic hydrocarbon monomer, a polyaromatic alkane and a preparation method and application thereof. The alkyl side chain substituted aromatic hydrocarbon monomer has the structure shown in the following formula: wherein A is selected from aromatic monomers, Y is selected from F, Cl, Br, C n H 2n‑1 , OH, OC n H 2n‑1 , OC n F 2n‑1 , SH, SC n H 2n‑1 , SC n F 2n‑1 , N(C n H 2n‑1 )2 or N(C n H 2n‑1 )3, and n is an integer selected from 0-20. The method provided by the application has super-high reaction activity, good compatibility with various functional groups, mild reaction, high yield, and can be used for preparing various ion exchange membrane materials, organic photoelectric materials and other required substituted aromatic monomers, and the prepared membrane material has the advantages of high conductivity, excellent chemical stability and the like, and has obvious practical application and industrialization prospect.

A fluorene-based ionomer containing long alkyl side chains, its preparation method, and its application in anion exchange membranes. This invention belongs to the field of fluorene-based ionomers and their preparation. The purpose of this invention is to solve the technical problem that existing anion exchange membranes based on polymers constructed from ether-free polyfluorene backbones and quaternary ammonium salt cations cannot achieve an optimal balance between mechanical and ion conductivity. This invention introduces long alkyl side chains of a specific length onto a highly rigid fluorene-based polymer backbone, constructing a molecular structure that combines rigidity and flexibility, thereby significantly improving the overall performance of the anion exchange membrane. The resulting fluorene-based ionomer containing long alkyl side chains is applied as an anion exchange membrane component in the field of fuel cell alkaline batteries.

This invention relates to the field of fluorescent materials technology, disclosing near-infrared I-region photosensitizers, their preparation methods, and their applications in bioimaging. The near-infrared I-region photosensitizers include TPE-AT-DPTQ, TPE-EDOT-DPTQ, and TPE-HEXOT-DPTQ, possessing a D-π-A-π-D molecular structure. They utilize tetraphenylethylene as the electron donor, sterically hindered π-bridges (3-hexylthiophene, 3,4-ethylenedioxythiophene, and 3,4-dihexyloxythiophene) as bridging units, and DPTQ as the electron acceptor. By introducing long alkyl side chains, these near-infrared I-region photosensitizers significantly increase the intermolecular distance in the aggregated state, effectively preventing excessively dense molecular packing and further enhancing the AIE properties and fluorescence brightness of the molecules.

The invention discloses a preparation method of castor oil-based biomass lubricant base oil, and belongs to the technical field of base oil. The preparation method comprises the following steps: ester exchange reaction, esterification reaction, epoxidation reaction, ring-opening reaction and bridging esterification reaction. The prepared base oil constructs a macromolecular structure through bridging esterification, so that the base oil is endowed with high viscosity; unstable carbon-carbon double bonds in the raw materials are eliminated through the epoxidation step, the flash point of the base oil is increased, and the service life of the oil product is prolonged; the introduced long-chain alkyl side chain effectively prevents molecules from crystallizing at low temperature, and the pour point is reduced; castor oil is used as an initial raw material, and the source is renewable; the final ester structure is easily decomposed by microorganisms and is environment-friendly; in a word, the biomass raw material is successfully converted into the base oil with'high viscosity index, low pour point, high flash point and good biodegradability 'through an innovative synthesis route, and the base oil has important application value in the technical field of base oil.

The invention relates to a photocuring adhesive as well as a preparation method and application thereof. The photocuring adhesive is prepared from the following raw materials: an unsaturated polyether oligomer and a photoinitiator, the unsaturated polyether oligomer is prepared from the following raw materials: alkylene oxide and a carboxyl-containing unsaturated initiator; the molecular structure of the unsaturated polyether oligomer has a carbon-carbon double bond and an alkyl side chain; the molar ratio of the alkylene oxide to the carboxyl-containing unsaturated initiator is (1.5-4): 1. The photocuring adhesive provided by the invention can be directly coated in an underwater environment, in-situ cross-linking curing is realized through ultraviolet light triggering, and the photocuring adhesive has good bonding performance on various base materials; the photo-curing adhesive provided by the invention can keep adhesion stability in various complex solution environments, and can be suitable for ocean engineering maintenance, underwater precision packaging and in-situ repair under complex working conditions.

The invention relates to the technical field of flame-retardant resin, and provides polydivinylbenzene flame-retardant resin as well as a preparation method and a cured product thereof. The polydivinylbenzene flame-retardant resin provided by the invention is formed by copolymerization of divinyl benzene, ethyl vinyl benzene, a silicon-containing monomer and benzofuran, the divinyl benzene provides a side chain unsaturated group required by crosslinking, and the cured resin has an excellent rigid skeleton; flexible alkyl side chains are regularly inserted into a main chain of the ethyl styrene monomer, so that the impact resistance of the material is improved; by adding the silicon-containing monomer, the combustion performance of the material can be reduced, and the high-temperature resistance and tensile strength of the material are improved; the benzofuran can effectively control the molecular weight of the polymer and reduce the molecular weight distribution of the product. In conclusion, the polydivinylbenzene flame-retardant resin provided by the invention has the advantages of excellent flame retardance, high temperature resistance, high toughness and low dielectric loss, and can meet the use requirements in the fields of electronic packaging, high-end copper-clad plates and the like.

The application provides a binary ionic liquid fiber membrane, a preparation method and application in adsorption of palladium, and belongs to the technical field of adsorption materials, and comprises the following steps: mixing dichloromethane and acetic acid to obtain a first solution; dissolving cellulose acetate, a first ionic liquid and a second ionic liquid in the first solution to obtain a second solution; the first ionic liquid and the second ionic liquid are alkenyl imidazole salts with different length alkyl side chain molecular structures; adding N,N'-methylene bisacrylamide and benzoyl peroxide into the second solution, heating, stirring and warming to obtain a third solution; performing high-pressure electrospinning on the third solution to obtain a binary ionic liquid fiber membrane; or performing irradiation on the second solution after high-pressure electrospinning to obtain a binary ionic liquid fiber membrane. The binary ionic liquid fiber membrane prepared by the application can efficiently and selectively adsorb and recover palladium from a complex acidic solution, and has the advantages of faster adsorption speed, better selectivity and better salt resistance.

The application discloses a fluorescent dye based on a benzothiadiazole matrix and application thereof, and introduces a benzotriazole ring into a benzothiadiazole structure matrix to obtain a fluorescent probe in the NIR-II region, so that the fluorescent probe has a longer fluorescent emission wavelength; and the introduction of an alkyl side chain and a (trimethyl) propyl ammonium group into the benzotriazole ring can improve the stability of the three-ring structure of the benzothiadiazole-triazole and the water solubility of the benzothiadiazole-triazole, and the spacer thiophene between the electron donor and the electron acceptor can make the fluorescent dye have a higher quantum yield, so that the fluorescent dye can better recognize and detect ferric ions in an environment and a biological sample, and provides a new thought for the detection of Fe 3+ .

The invention relates to the field of textile auxiliaries, in particular to a preparation method of cardanol modified smooth and elastic silicone oil. The invention relates to a high-temperature-resistant and high-pressure-resistant silicone sealant which is prepared from the following raw materials: octamethylcyclotetrasiloxane, 1, 3-bis (3-aminopropyl)-1, 1, 3, 3-tetramethyldisiloxane, a basic catalyst, cardanol diglycidyl ether and the like. A long-chain alkyl side chain is introduced to a main chain of the structure, so that the interfacial adsorption capacity to fibers can be improved, and finished cotton and polyester-cotton fabrics are endowed with excellent smoothness, resilience, low yellowing and low color change.

The invention provides a release film manufacturing method, a release film and a laminated film. The present invention addresses the problem of forming a coating film and a release layer by applying an alkyl side-chain polymer-type non-silicone non-fluorine release agent resin to the surface of a substrate film without using an organic solvent and without repelling a coating liquid by the surface of the substrate film. The method for producing a release film comprises, in the following order: a step for obtaining a release film precursor by applying an aqueous dispersion of a non-silicone non-fluorine release agent resin on a first surface (11a) of a base film (11) having the first surface (11a) and a second surface (11b), the base film containing a polyester resin on the first surface (11a); and a step for drying the release film precursor, the aqueous dispersion containing water, a release agent resin, and a surfactant, the release agent resin being a non-silicone non-fluorine-based release agent resin and being an alkyl side-chain polymer, and the surfactant containing an acetylene glycol-based nonionic surfactant having an HLB value of 11 or more.

The invention provides application of alkyl hydroxyethyl ethylenediamine in carbon dioxide capture, and relates to the technical field of carbon dioxide capture. The alkyl hydroxyethyl ethylenediamine structure provided by the invention has one or more alkyl side chains, and the reaction path and action strength of amino and carbon dioxide can be regulated and controlled by changing the alkyl structure and number, so that the purpose of enhancing the degradation resistance is achieved while the desorption energy consumption is reduced and the desorption efficiency is improved. The alkyl hydroxyethyl ethylenediamine combined absorbent composed of alkyl hydroxyethyl ethylenediamine, water and an activator has the advantages of low reaction heat, high desorption efficiency and strong degradation resistance.

The invention discloses an asphaltene dispersant and a preparation method thereof, and belongs to the technical field of petrochemical industry. A plurality of ester polar functional groups exist in the asphaltene dispersant provided by the invention, so that asphaltene can be easily combined through intermolecular forces such as hydrogen bonds, and meanwhile, nitrogen atoms in the center of the asphaltene dispersant have a pair of lone pair electrons which can be used as acceptors of the hydrogen bonds to form the hydrogen bonds with hydrogen atoms in asphaltene molecules, so that the asphaltene dispersants are formed. Therefore, the adsorption force of the asphaltene lamellar structure is weakened; moreover, the long alkyl side chain can play a supporting role among asphaltenes, so that the asphaltenes are further prevented from being gathered, and large aggregates are not easy to form among the asphaltenes. Due to the characteristics, the addition amount of the asphaltene dispersant in the crude oil is less than or equal to 0.05%, and the addition amount is small, so that the preparation cost can be reduced. In addition, the addition amount is small, so that the influence of the addition of the asphaltene dispersant on the performance of the crude oil can be reduced.

The application provides a water-soluble expanded biphenyl[3]arene derivative and a preparation method and application thereof, and belongs to the technical field of chemical medicine manufacturing. The water-soluble (expanded) biphenyl[3]arene derivative is prepared by a nucleophilic substitution reaction of full-hydroxyl (expanded) biphenyl[3]arene as raw material and propane sulfonic acid lactone in a dioxane / water mixed solution. The (expanded) biphenyl[3]arene is suitable for capsaicin and is easy to be post-modified as a macrocyclic skeleton, the flexible alkyl side chain is introduced to prolong the cavity depth, expand the area of hydrophobic interaction and enhance the complexing capacity, and the terminal sodium sulfonate group is arranged to improve the water solubility and biocompatibility of the molecule, so that the capsaicin can be wiped and removed by the recognition and solubilization, and the stimulation of the capsaicin on cells can be inhibited by the smearing and blending, the cytotoxicity of the capsaicin on human immortalized epidermal cells is reduced, and the scratching behavior caused by the capsaicin stimulation is relieved.

This invention belongs to the field of polymer electrolyte membranes, specifically relating to a cross-linked hydrophilic-hydrophobic dual-comb sulfonated polybenzimidazole proton exchange membrane for water electrolysis and its preparation method. First, polybenzimidazole OPBI containing ether bonds is synthesized. Then, OPBI is reacted with bromoalkane and 1,3-propanesulfonate lactone to synthesize hydrophilic-hydrophobic dual-comb sulfonated polybenzimidazole OPBI-PS-C. Next, a small-molecule cross-linking agent sBI for sulfonated benzimidazole is designed and prepared. Finally, sBI is reacted with OPBI-PS-C to obtain the cross-linked hydrophilic-hydrophobic dual-comb sulfonated polybenzimidazole proton exchange membrane. The introduction of long alkyl side chains can form a microphase separation structure within the membrane, constructing continuous ion transport channels, thereby reducing ion migration impedance and increasing proton conductivity. The introduction of the cross-linked structure improves the membrane's oxidative stability, suppresses swelling under high humidity conditions, and improves the durability of the electrolyzed water.

The application discloses a polymer, an anion exchange membrane and a preparation method and application thereof. The skeleton of the polymer does not contain an ether bond and has a cationic piperidinium salt, so that the polymer has good alkali resistance. The skeleton of the polymer further contains a hydrophilic side chain, so that the polymer has good solubility and film-forming performance. The skeleton of the polymer further contains a hydrophobic alkene side chain, so that the polymer has a self-crosslinking characteristic, and the film-forming quality of the polymer can be further improved. The material of the anion exchange membrane contains the polymer and / or a crosslinked compound formed by self-crosslinking reaction of the unsaturated double bond of the polymer, and has good mechanical performance, electrical conductivity, alkali stability and low swelling rate, and can be applied to preparation of an alkaline fuel cell, an alkaline water electrolysis device, a separation device, a purification device and a supercapacitor.

The application provides a polymer, which comprises a main chain and a side chain. The main chain mainly comprises a water-soluble acrylonitrile copolymer, and the polymerized monomers of the acrylonitrile copolymer comprise acrylic monomers and acrylonitrile monomers. One end of the side chain is connected to the main chain, and the other end is connected to an organic silicon group X1, X2 and X3, which are independently selected from one of C1-C4 alkyl, hydroxyl, halogen atom and C1-C4 alkoxy, and X1, X2 and X3 are not alkyl at the same time. The number of chain atoms of the side chain is greater than or equal to 3. The application also provides a binder, a negative electrode and a secondary battery comprising the polymer, an application of the polymer and a preparation method of the negative electrode. The main chain of the polymer has high mechanical strength, can maintain the stability of the micro-skeleton structure of the electrode, and the side chain can be stretched and contracted while achieving multi-dimensional bonding of the silicon particles, and can buffer the volume and stress changes of the silicon particles in the charging and discharging process.

Polymers useful for associating therewith oligonucleotides and for delivering the oligonucleotides into a cell, conjugates comprising these polymers and an oligonucleotide associated therewith, and compositions comprising same are provided. Also provided are uses of these conjugates in, for example, gene therapy, and particularly gene silencing. The disclosed polymers feature a PGA backbone, and amine-terminated pendant groups attached to at least 40% of the backbone units, and optionally further comprise alkyl pendant groups and / or other nitrogen-containing pendant groups attached to other one or more portions of the backbone units. The disclosed polymers can be cross-linked or can form a part of a block-copolymer.

The present application relates to the technical fields of compound synthesis, and in particular to a compound, a preparation method and application thereof.The chemical structure of the compound is as follows: R1-(CH2) x -C(=O)-O-(CH2) y -R2 formula (I), wherein R1 is at least one cyano-substituted organic group, R2 is a fluorine-containing substituent group, x is an integer of 0-5, and y is an integer of 1-8.The compound provided by the present application is an ester substance with a cyano side chain and a fluorinated alkyl side chain, wherein the cyano group is located on the carboxylic acid side of the ester group, the fluorinated alkyl group is located on the alcohol side of the ester group, the cyano group and the fluorine atom synergistically act on the ester group, affect the electronic distribution of the compound, and make the ester compound stable, balanced in performance, simple in preparation method, and have good application prospects in multiple fields.

The invention belongs to the technical field of petrochemical engineering, and particularly discloses an asphaltene dispersant, a preparation method and application thereof, and a method for inhibiting separation of asphaltene in crude oil by using the asphaltene dispersant. The asphaltene dispersant comprises an amine compound with a plurality of acylamino and alkyl side chains, the molecular formula of the amine compound is shown in the specification, and n is greater than or equal to 3 and less than or equal to 30. The asphaltene dispersant can solve the problem of poor dispersibility of asphaltene in crude oil, and is beneficial to improving the stability of the crude oil.

The invention belongs to the field of anion exchange membranes, and particularly relates to an anion exchange membrane based on piperidine functionalized main-side chain dication and a preparation method of the anion exchange membrane. The preparation method comprises the following steps: carrying out a Friedel-Crafts polymerization reaction on p-terphenyl, N-methyl-4-piperidone and 2, 2, 2-trifluoroacetophenone, so as to synthesize the poly (terphenyl-piperidone-trifluoroacetophenone). The preparation method comprises the following steps: reacting 1, 6-dibromohexane with 1-methylpiperidine to synthesize a hydrophilic long alkyl piperidine cationic side chain; and then adopting a comb grafting strategy to act with main chain piperidine cations, and then carrying out quaternization to obtain the anion exchange membrane. A good hydrophilic / hydrophobic microphase separation structure is constructed, and the hydrophilic phase is beneficial to improvement of OH <-> transmission efficiency and provides an exclusive channel for ion transportation; the hydrophobic phase improves the mechanical property of the membrane; the conductivity is improved by increasing the number of cations, and the dimensional stability and alkali-resistant stability are improved by introducing an ether-free alkyl side chain in a grafting manner.

Disclosed in the present application are an alkyl-side-chain-substituted aromatic hydrocarbon monomer, poly(aryl alkane), and preparation methods therefor and the use thereof. The alkyl-side-chain substituted aromatic hydrocarbon monomer has a structure as represented by the formula below: formula (I), wherein A is selected from an aromatic monomer, and Y is selected from F, Cl, Br, CnH2n-1, OH, OCnH2n-1, OCnF2n-1, SH, SCnH2n-1, SCnF2n-1, N(CnH2n-1)2 or N(CnH2n-1)3, where n is an integer selected from 0 to 20. The method provided by the present application has ultrahigh reactivity, good compatibility with various functional groups, a mild reaction and a high yield, and can be used for preparing substituted aromatic monomers required by various ion exchange membrane materials, organic photoelectric materials, etc. Moreover, a prepared membrane material has the advantages of high conductivity, good chemical stability, etc., and has obvious practical use and industrialization prospects.

The invention discloses a method for removing alkyl side chains in polycyclic aromatic hydrocarbon containing the alkyl side chains and application, and relates to the technical field of organic chemistry. The method for removing the alkyl side chain in the polycyclic aromatic hydrocarbon containing the alkyl side chain comprises the following steps: S1, in the presence of a first catalyst, carrying out oxidation reaction on the polycyclic aromatic hydrocarbon containing the alkyl side chain to obtain polycyclic aromatic hydrocarbon containing a carboxylic acid group; s2, in the presence of a second catalyst, carrying out a decarboxylation reaction on the polycyclic aromatic hydrocarbon containing the carboxylic acid group to obtain the polycyclic aromatic hydrocarbon, wherein the first catalyst comprises an alumina carrier and a metal oxide loaded on the alumina carrier, and the metal oxide comprises a cobalt oxide and a manganese oxide; and the second catalyst comprises cuprous oxide, so that the alkyl side chain in the polycyclic aromatic hydrocarbon containing the alkyl side chain can be efficiently removed, the reaction selectivity and the product yield can be remarkably improved, and the generation of byproducts can be reduced, thereby reducing the production cost.

The application belongs to the technical field of polyurethane, and particularly relates to a phase change adaptive anti-infiltration hysteresis deformation foam material and a preparation method thereof. The material is prepared by the reaction of component A and component B, wherein the component A comprises polyether polyol A, polyether polyol B, polyether polyol C, a catalyst, a foam stabilizer and a foaming agent; and the component B is isocyanate modified by polyether polyol D and polyether polyol A. The ester bond, Si-O-Si segment, fluorosilicon hydrophobic group and long-chain alkyl side chain are introduced into the polyether molecular chain segment, the internal soft segment structure of the polyurethane foam is improved, the glass transition temperature and the surface tension are controlled, the prepared polyurethane foam has excellent phase change adaptability and anti-infiltration, the polyether structure and the foam formula are designed, the molecular chain entanglement degree and the chemical crosslinking density in the foam are controlled, and the foam is endowed with excellent properties such as hysteresis deformation and low compression permanent deformation.

The present invention relates to a colorant dispersion liquid having storage stability, comprising: a colorant, a dispersant, a benzene sulfonic acid compound having a fluoroalkyl side chain, and an organic solvent. When a photosensitive resin composition containing the colorant dispersion liquid is used, black pigment particle precipitates produced upon long-term storage can be avoided, and high light-blocking properties are maintained even upon long-term storage.

The invention relates to the technical field of adsorbent preparation, and particularly discloses a silica gel adsorbent for hexane refining as well as a preparation method and application of the silica gel adsorbent for hexane refining. A boron-tin dual-modified skeleton and a surface grafted polymer layer form a multi-stage synergistic purification system, a tin coordination center realizes selective strong adsorption on oxygen-containing compounds and water, a long-chain alkyl side chain of the surface grafted polymer layer has excellent adsorption capacity on low-molecular-weight wax, surface capture is carried out on water and polar impurities through hydroxyl, and efficient and synchronous removal of the low-molecular-weight wax, the oxygen-containing compounds and the water in cyclic cyclohexane is realized. The technical defects that an existing adsorbent cannot simultaneously remove multiple impurities and is poor in water resistance and difficult to regenerate are overcome, long-period stable operation of a polyethylene device is guaranteed, and the industrial application value is remarkable.

The application relates to a kind of automobile flame-retardant ABS materials and its preparation method, belong to flame-retardant material technical field.Flame-retardant ABS material includes the following weight parts components: ABS resin 100 parts, composite flame retardant 20-30 parts, toughening agent 10-15 parts, antioxidant 0.4-0.6 parts and lubricant 1.2-1.8 parts;Composite flame retardant is with magnesium hydroxide as core, surface chemical grafting phosphorus silicon modification layer, the compatibility and dispersibility of composite flame retardant in matrix are significantly improved by blending composite flame retardant with ABS, the compatibility and dispersibility of composite flame retardant in matrix are significantly improved by the long chain alkyl side chain uniformly distributed in modification layer molecule, migration segregation is inhibited, phosphorus catalytic alkyl chain is carbonized when burning, silicon is strengthened to form dense carbon-silicon composite layer, magnesium hydroxide decomposition gas is inhibited to escape and form closed heat insulation microstructure, the sustained spread of combustion is inhibited, and the stability of material strength is maintained.