682 results about "Tertiary amine" patented technology

The invention belongs to the technical field of pharmaceutical chemical processes, and particularly relates to a preparation method of a penem antibiotic intermediate 4-BMA, which comprises the following steps: adding Zn powder, chlorosilane, aliphatic tertiary amine, zinc salt and 4-AA in a formula (I) into THF (tetrahydrofuran), uniformly stirring, dropwise adding a THF solution of alpha-haloamide with an induction group in a formula (II) for reaction, filtering the reaction solution, removing the zinc powder, and drying to obtain the penem antibiotic intermediate 4-BMA. Extracting the filtrate to obtain a THF phase, washing with an aqueous solution of potassium oxalate, and recovering THF to obtain a formula (III); and carrying out oxidative hydrolysis, sulfur dioxide quenching, sulfur dioxide acid regulation crystallization and recrystallization on the formula (III) to obtain the intermediate 4-BMA. According to the preparation method disclosed by the invention, a zinc salt is used as a catalyst during preparation of the formula (III), potassium oxalate is used for removing residual Zn (II) in a THF phase, SO2 is used for quenching hydrogen peroxide and acid regulation and crystallization of 4-BMA, the oxygenolysis problem of 4-BMA is solved, and the preparation method has the characteristics of greenness, safety and high efficiency, is strong in product competitive advantage and is suitable for industrial production.

The invention relates to the technical field of dry films, in particular to a photosensitive resin composition, a photosensitive dry film and a preparation method of the photosensitive dry film. Comprising alkali-soluble resin, a photopolymerizable monomer with at least one vinyl unsaturated group, a photosensitizer and other additives, and the alkali-soluble resin at least comprises a nitrogen-containing heterochain or nitrogen heterocyclic ring monomer chain segment group; the alkali-soluble adhesive resin containing aza-chain or azacyclo-containing monomer chain segment groups is prepared by introducing an aza-chain or azacyclo-containing monomer, such as a monomer containing primary amine, secondary amine, tertiary amine, quaternary ammonium salt, pyridines, imidazoles and other groups, into alkali-soluble resin, and is used for improving the adhesive force and binding force between the resin and the surfaces of metals such as copper and the like; therefore, the resolution and adhesion capability of the photosensitive resin composition or the photosensitive dry film is improved.

The invention relates to an alkyl tertiary amine quaternization reaction preparation process based on a micro-channel reactor, which comprises the following steps: mixing aliphatic tertiary amine and an alkylating agent, adding into a solvent, diluting into a mixed diluent, conveying to the micro-channel reactor, controlling the reaction temperature at 70-120 DEG C, and carrying out quaternization reaction to generate a reaction mixture containing target alkyl tertiary amine quaternary ammonium salt. The alkyl tertiary amine quaternary ammonium salt is synthesized by utilizing the micro-channel reactor, and compared with a traditional reaction kettle method production process, efficient mass and heat transfer and process enhancement in the reaction process can be realized, and continuity and accurate control of the reaction process can be realized, so that the reaction efficiency and the product quality of alkyl tertiary amine quaternization reaction are improved.

The invention relates to a cationic hydrophilic softener for chinlon dyeing in one bath as well as a preparation method and application of the cationic hydrophilic softener. The method comprises the following steps: S1, carrying out hydrosilylation reaction on end hydrogen-containing silicone oil and allyl epoxy polyether under the action of a platinum catalyst; s2, polyol containing hydroxyl and polyisocyanate are subjected to a reaction under the action of a first catalyst, and a-NCO-terminated polyurethane prepolymer is generated; a chain extender containing a tertiary amine group is added into the polyurethane prepolymer for a reaction; adding the epoxy-terminated polyether silicone oil obtained in the step S1 for reaction, and then adding acid for neutralization to obtain cationic polyurethane modified silicone oil; and S3, emulsifying. The softening agent prepared by the invention has excellent stability in a high-temperature acid dye bath, and does not demulsify and stick to a vat; the compatibility with acid dyes is good, and color spots and color spots can be effectively avoided; and after use, the chinlon fabric can be endowed with lasting, smooth and soft hand feeling and good hydrophilicity, and meanwhile, the original whiteness of the fabric is kept.

The invention discloses a photosensitive polyimide, a negative photoresist and an application of the photosensitive polyimide in preparation of a film, the structure of the photosensitive polyimide is shown in the specification, X is a tetravalent organic group and is a residue X of a polyimide polymerization monomer tetracarboxylic dianhydride; y is a divalent organic group and is a residue Y of a polyimide polymerization monomer diamine; r1 and R2 are monovalent organic groups and are residues of primary alcohol forming side chain ester bonds of side chain polyamic acid ester; side chains R1 and R2 at least contain tertiary amine structures, and at least one of the side chains R1 and R2 containing the tertiary amine structures can form ammonium salt with phosphate containing an allyl structure; and n is an integer from 2 to 150. The invention provides a photosensitive polyimide which can be developed by adopting an alkaline aqueous solution, can be cured at low temperature and can form a negative pattern, a preparation method of a photoresist composition of the photosensitive polyimide, and a photoetching curing film, which can be applied to display industry or semiconductor industry as an insulating layer, a passivation layer or an interlayer dielectric layer and the like.

The invention relates to the technical field of fibers, and particularly discloses a skin-friendly fiber, a preparation method of the skin-friendly fiber and a hygienic product with the skin-friendly fiber. The skin-friendly fiber comprises a fiber matrix and a coating layer coating the fiber matrix, and the fiber matrix comprises a core layer and a skin layer coating the core layer; the core layer is prepared from the following raw materials: PET resin, whitening master batch, a flexibilizer, a compatilizer and an antioxidant; the skin layer comprises the following raw materials: PE resin, an initiator, glycidyl methacrylate and tertiary amine; the coating layer comprises the following raw materials: red camellia oil microcapsules and polylysine; the capsule core of the red camellia oil microcapsule is red camellia oil, and the capsule wall of the red camellia oil microcapsule is prepared from the following raw materials: chitosan, hyaluronic acid and a glutaraldehyde solution in a mass ratio of 1: (2-3): (1.5-2). The skin-friendly fiber can be used for manufacturing non-woven fabrics of hygienic products, and has the advantages of being skin-friendly, soft, breathable and high in moisture penetrability.

The invention discloses a ketoazine-based polymer, an anion exchange membrane and a preparation method and application of the ketoazine-based polymer and the anion exchange membrane. A first linking group and a second linking group are mixed and then mixed with an aryl monomer A in an aprotic solvent of halogen atoms; slowly adding a super acid mixture; performing polymerization reaction in an environment of-5 to 3 DEG C to obtain a reaction solution; pouring the reaction liquid into a first mixed solvent to obtain PAAz; carrying out primary quaternization reaction on PAAz through carbonate, bicarbonate or hydroxide salt of alkali metal, and adding an organic base catalyst to assist the primary quaternization reaction; in the first quaternization reaction, a quaternization reagent is added; and pouring into a second mixed solvent, and precipitating to obtain purified PAAz. Under the condition of super acid catalysis, two or more alicyclic amine derivatives containing ketone groups react with one or more aromatic fused rings to generate a polymer containing secondary or tertiary amine. And carrying out quaternization treatment to finally form the cationic polymer.

The invention relates to the technical field of antistatic materials, and relates to an antistatic styrene copolymer for producing a carrier tape and a preparation method thereof, and the antistatic styrene copolymer comprises the following components by mass: 45%-60% of HIPS, 6%-10% of HIPS / PPO alloy, 15%-25% of conductive carbon black, 5%-15% of a compatilizer, 6%-15% of a flexibilizer, 2%-5% of a carbon black dispersant, 0.3%-0.8% of an antioxidant, and 0.5%-1% of a lubricant. The carbon black dispersing agent comprises a coupling agent and medium-chain and long-chain aliphatic tertiary amine. Through the collaborative design of the tertiary amine-coupling agent binary carbon black dispersing agent and the HIPS / PPO heat-resistant alloy, the styrene system filled with 15%-25% high carbon black has no crystal point, no carbon deposit, no melting in 225 DEG C heat sealing and no black falling in tape tearing, and the industrial-grade requirement of continuous high-speed production of carrier tapes is met.

The invention belongs to the field of electronic device protective coatings, and particularly relates to a water-based polyimide / POSS-GO composite coating and a preparation method and application thereof.The method comprises the steps that firstly, dianhydride and diamine monomers react to prepare polyamic acid, then tertiary amine is made into a salt agent to prepare water-soluble polyamic acid salt, and then the water-soluble polyamic acid salt is prepared into a water-soluble polyimide / POSS-GO composite coating; the preparation method comprises the following steps: modifying graphene oxide with aminated polyhedral oligomeric silsesquioxane to prepare a POSS-GO filler, uniformly dispersing the filler and water-based polyamic acid salt, spraying on the surface of a base material, and then carrying out thermal imidization treatment to prepare the water-based polyimide / POSS-GO composite coating. The composite coating prepared by the method is a novel coating material with excellent corrosion resistance and low dielectric property, not only provides a new thought for the design of a high-performance anticorrosive coating, but also provides a potential material strategy for a multifunctional protective coating of an electronic device.

A resin for grayscale digital light processing 3D printing includes a donor moiety, an acceptor moiety, a rigid moiety, a photoinitiator, and a photoabsorber. The donor moiety is an acrylate monomer with a side group of a free carbonyl, a primary amine on an acrylate, a secondary amine on an acrylate, and / or a tertiary amine on an acrylate. The acceptor moiety is different than the donor moiety and is an acrylate monomer with a side group of a free hydroxy, a primary amine, secondary amine, and / or an imine. And the rigid moiety is acrylate monomer with a side group of a cyclohexyl, a substituted cyclohexyl, or a bicyclic structure. A monolithic structure formed from the resin using grayscale digital light processing 3D printing can have a Young's modulus ranging from 0.1 MPa to 100 MPa.

A diesel fuel composition including (a) a quaternary ammonium salt additive; and (b) one or more nitrogen-free detergents; wherein the quaternary ammonium salt additive includes the quaternised reaction product of a hydrocarbyl substituted succinic acid derived acylating agent and a compound able to react with said acylating agent and which includes a tertiary amine group; wherein each molecule of the hydrocarbyl substituted succinic acid derived acylating agent includes on average at least 1.2 succinic acid moieties.

The application relates to the technical field of pharmaceutical chemistry, and particularly discloses a key impurity of netupitant and a preparation method thereof. The preparation method of the key impurity of netupitant is as follows: netupitant is placed in a dichloromethane medium, stirred, heated and refluxed, and the netupitant and the dichloromethane are reacted. The structure of the netupitant contains an N-methyl piperazine ring, and a chloromethyl group is connected to a tertiary amine nitrogen of the ring. The reaction generates a chloromethylated quaternary ammonium salt, which is the key impurity of the netupitant. The impurity belongs to an impurity possibly generated in a preparation route of the netupitant. The application discloses reaction conditions for generating the key impurity of the netupitant, and provides a reference for quality control of the netupitant.

The application belongs to the technical field of polymer medicine synthesis, and particularly relates to a polymer for inducing tumor immunogenic cell death, a preparation method and application. The polymer for inducing tumor immunogenic cell death provided by the application has a structure as shown in formula I: in formula I, m is an integer of 110-120; n is an integer of 70-75; p is an integer of 21-79; and R is one of a tertiary amine group, a sulfide group and a tertiary amine sulfide group. The polymer provided by the application has pH responsiveness, can be self-assembled to obtain a polymer nanovesicle, can load drugs, can induce tumor immunogenic cell death (ICD) after application to form an in-situ tumor vaccine, can realize controllable release of a hydrophobic immunoadjuvant, can polarize tumor-associated macrophages (TAMs), and is suitable for tumor immunotherapy application.

The application belongs to the technical field of electrophoretic paint, and provides a polyurethane modified epoxy resin cathode electrophoretic paint and a preparation method thereof.The cathode electrophoretic paint comprises a cationic water-based resin emulsion, a blocked isocyanate crosslinking agent, a pigment paste, an additive and deionized water.The solid resin in the cationic water-based resin emulsion comprises polyurethane modified epoxy resin, the polyurethane modified epoxy resin comprises a bisphenol A type epoxy resin skeleton and polyurethane segments connected to the skeleton, the polyurethane segments contain tertiary amine groups introduced by N,N-dimethyl ethanolamine, and the tertiary amine groups are connected to the epoxy resin skeleton through urethane bonds formed by reaction of isocyanate groups with hydroxyl groups in the bisphenol A type epoxy resin skeleton.The application can reduce local enrichment of polyurethane soft segments and cationic hydrophilic groups in the deposited film, and reduce formation of low crosslinking density penetration channels in the cured paint film.

This application relates to electrolytes and electrochemical devices. The electrolyte comprises an active material and a solvent; the active material comprises a polytert-amine-substituted biphenylquinone compound with an oxidation state as shown in Formula I; in Formula I, each R1 is independently a C2-C10 branched or straight-chain alkyl group, and each R2 is independently a C1-C5 straight-chain alkylene group. The active material in the above electrolyte, including a polytert-amine-substituted biphenylquinone compound with a specific structure, possesses high potential, structural stability, and two-electron transfer characteristics, making it less prone to cross-membrane crosstalk leading to battery capacity decay. When the electrolyte containing this active material is used in electrochemical devices such as flow batteries, long-term stable operation can be achieved. Furthermore, the preparation process of this type of biphenylquinone compound is green, simple, low-cost, and easily industrialized, facilitating widespread use. Formula I

The application discloses a modified polyurethane water-based functional coating and a preparation process thereof, and belongs to the technical field of water-based functional coatings. In the application, N,N-dimethylethanolamine is used as a blocking agent to block the isocyanate prepolymer, so that a latent type blocked isocyanate water-based polyurethane emulsion is prepared; lactide monomers, epoxy group grafted modified nano silicon dioxide and amino functionalized light stabilizer microcapsules are added into the emulsion; curing is carried out by using a two-stage process, that is, after preheating and water removal and film formation, 130-150 DEG C baking is carried out to trigger the deblocking of the DMEA blocked isocyanate, and the tertiary amine groups in the deblocked DMEA molecules immediately initiate the ring-opening polymerization of the premixed lactide monomers in the system in situ to generate polylactic acid segments which are chemically grafted to the crosslinked network. The application realizes the synchronous linkage of crosslinking and curing and polymer toughening, and the obtained coating has the characteristics of high crosslinking density, excellent flexibility and low internal stress.

To provide a sealing agent for a liquid crystal device which is excellent in storage stability, low temperature curability, insertion prevention, and low liquid crystal contamination.SOLUTION: A sealing agent for a liquid crystal device contains a curable resin, an acid anhydride, and a base generator, wherein the base generator generates a tertiary amine compound by heating or irradiation with active energy rays.SELECTED DRAWING: None

The application provides a high-efficiency catalyst for cyclic carbonates, a preparation method and application thereof, and compared with the prior art, the catalyst is prepared from a monoamine-based polyether, a polyamine, a phenolic monomer and formaldehyde, an aminated intermediate is synthesized through a chemical grafting reaction, and then is reacted with an epoxy group quaternary ammonium salt to obtain a supported quaternary ammonium salt catalyst. The catalyst molecular structure comprises a quaternary ammonium salt group, a tertiary amine group, a hydroxyl group and an ether bond structure, can not only play a catalytic effect of the quaternary ammonium salt, but also has a certain complexing effect of oxygen atoms in the tertiary amine group, the hydroxyl group and the ether bond structure, can stabilize the ion pair of the quaternary ammonium salt catalyst, and ensure the catalytic effect of the catalyst. Moreover, the catalyst prepared in the application can be independently used for catalyzing preparation of cyclic carbonates, does not need a cocatalyst, and has high catalytic efficiency and good stability.

The invention provides a preparation method of a phosphoramidite compound. The preparation method comprises the following steps: (1) mixing a nitrogen-containing compound and an acid-binding agent with a first solvent to obtain a first mixed solution; mixing phosphorus trichloride with a second solvent to obtain a second mixed solution; mixing aromatic diphenol with a third solvent to obtain a third mixed solution; (2) pumping the first mixed solution and the second mixed solution obtained in the step (1) into a first micro-mixer, and then enabling the first mixed solution and the second mixed solution to enter a first micro-channel reactor for reaction to obtain a reaction solution containing monochlorophosphoramidite; (3) enabling the reaction solution containing the monochlorophosphoramidite obtained in the step (2) and the third mixed solution obtained in the step (1) to enter a second micro-mixer, and then enabling the mixture to enter a second micro-channel reactor for reaction to obtain a phosphoramidite compound; the acid-binding agent is a polyether tertiary amine compound. The preparation method is short in reaction time and high in product yield.

The invention relates to an inhibitor for efficiently separating copper and sulfur under a low-alkalinity condition, a flotation reagent and a flotation method. The inhibitor is a compound as shown in a formula I (formula I), wherein R1, R2, R3 and R4 are respectively and independently selected from one of-R5X,-X,-H and-N + R6, R5 is alkyl of C1-C10, naphthenic base of C3-C10 or heterocyclic group of C3-C10, and the ring of the heterocyclic group is provided with or not provided with a substituent group; x is one of F, Cl, Br, I, tertiary amine positive ions, nitro, cyano, sulfo, formyl, acyl and carboxyl; r6 is a C1-C5 alkyl group or a C3-C5 cycloalkyl group; the inhibitor is low in viscosity and good in fluidity, pyrite and chalcopyrite in complex copper sulfide ore copper-sulfur ore can be effectively separated under the low-alkalinity condition, and the separation effect is remarkable.

This invention provides an organosilicon sealant composition for anti-fog automotive lights and its preparation method. The organosilicon sealant composition for anti-fog automotive lights comprises the following components: α,ω-dihydroxy polydimethylsiloxane, a first crosslinking agent, a second crosslinking agent, a catalyst, a filler, a coupling agent, and a plasticizer. The first crosslinking agent has 3 alkoxy functional groups, the second crosslinking agent has ≥4 alkoxy functional groups, and the D3-D10 content of α,ω-dihydroxy polydimethylsiloxane is 0.01-0.05 wt%. This invention utilizes a polyalkyloxysilane derivative prepared from a tertiary amine polyol and an isocyanate-based silane coupling agent as a non-volatile second crosslinking agent, which has high activity, does not reduce the reaction rate, and can reduce the amount of the volatile first crosslinking agent. Furthermore, using α,ω-dihydroxy polydimethylsiloxane with a low D3-D10 content as the base adhesive can further reduce volatile components, making the automotive lights less prone to fogging.

The invention discloses washable modified rosin resin, a preparation method thereof and washable mark pen ink. Wherein the washable modified rosin resin is prepared from the following components in parts by weight: 40 to 60 parts of natural rosin and 15 to 30 parts of maleic anhydride; 5 to 15 parts of polyol; 15 to 38 parts of an acrylic ester monomer; 3 to 10 parts of a pH responsive monomer; wherein the pH (Potential of Hydrogen) responsive monomer is dimethylaminoethyl methacrylate. Natural rosin is modified by adopting maleic anhydride and polyhydric alcohol, so that a molecular structure contains a large number of polar groups such as carboxyl, hydroxyl, ester groups and ether bonds, good stability is achieved, sedimentation and layering of pigments in ink can be effectively prevented when the rosin is prepared into the ink, and uniformity and consistency of writing colors are guaranteed. By adding the pH responsive monomer, in a cleaning state, tertiary amine groups are protonized, molecular chains are curled, the hydrophilicity is remarkably enhanced, the adhesive force is greatly reduced, and super-easy cleaning is realized.

The invention discloses a preparation method and application of hyperbranched polymer toughened epoxy resin and a secondary recycling method of the epoxy resin, and relates to the technical field of epoxy resin. The invention aims to solve the problems that the traditional thermosetting epoxy resin is difficult to recover and the toughness of the recovered thermosetting epoxy resin does not reach the standard. The method comprises the following steps: mixing the epoxy resin degradation product, the bisphenol A epoxy resin, the anhydride curing agent and the hyperbranched siloxane polymer, and stirring for 30-45 minutes at the temperature of 80-100 DEG C; adding a tertiary amine accelerant, uniformly mixing, and injecting into a mold; the mold is placed in a vacuum environment at the temperature of 60-80 DEG C for defoaming, curing is conducted for 1.8-2 h at the temperature of 120-130 DEG C, then the temperature is increased to 150-160 DEG C, and curing continues to be conducted for 1.8-2 h. The invention can obtain the preparation method and the application of the hyperbranched polymer toughened epoxy resin and the secondary recycling method of the epoxy resin.

The invention relates to the technical field of cathode electrophoretic paint, and discloses an asymmetric double-blocked isocyanate curing agent as well as a preparation method and application thereof. Based on the reaction activity difference of primary carbon and secondary carbon NCO groups in isophorone diisocyanate molecules, a step-by-step asymmetric sealing strategy is adopted: in the first stage, a hydrophilic chain extender containing a tertiary amine structure is utilized to preferentially react with high-activity primary carbon NCO, and an internal catalytic center and a hydrophilic group are anchored in a molecular skeleton; and in the second stage, the active methylene compound and the bio-based long-chain phenol are used for carrying out hybrid dual-sealing on the residual secondary carbon NCO with relatively large steric hindrance. According to the preparation of the curing agent, the curing agent integrates internal catalysis, stepped curing and self-emulsifying functions, the deblocking energy barrier is effectively reduced, and 140-DEG C low-temperature curing or high-temperature high-performance curing can be realized under the tin-free catalysis condition.

The application provides an asynchronous flotation enrichment method and application based on quartz and feldspar. The asynchronous flotation enrichment method comprises the following steps: S1, providing a to-be-processed ore material containing quartz and feldspar; S2, adding a tertiary amine cationic collector and then adding an anionic collector in the presence of a feldspar depressant, and then performing quartz flotation on the ore material to obtain a first feldspar and quartz rough concentrate; and S3, performing feldspar flotation on the quartz rough concentrate by using a feldspar combined collector in the presence of a feldspar activator and a quartz depressant to obtain a second feldspar and quartz concentrate. In the quartz flotation, the combination of the tertiary amine cationic collector and the anionic collector can realize the pre-enrichment of the quartz under neutral conditions; meanwhile, the pre-enrichment of the quartz reduces the feldspar content of the to-be-processed ore slurry in the feldspar flotation, and the use amount of the feldspar activator can be effectively reduced, so that the feldspar flotation under weakly acidic or neutral conditions is realized.

A method of preparing an ionic liquid includes the following steps. A halogen-containing compound is reacted with a first compound to form a second compound. The halogen-containing compound includes a halohydrocarbon, a sulfonyl halide, or a combination thereof. The first compound includes an amine compound having a tertiary amine group, a phosphine compound, or a combination thereof. The second compound includes a first quaternary ammonium salt, a first quaternary phosphonium salt, or a combination thereof. The second compound and a lithium salt are reacted in a microwave device to form a third compound. The third compound includes a second quaternary ammonium salt, a second quaternary phosphonium salt, or a combination thereof. Anions of the second compound and the third compound are different. A microwave power of the microwave device is 700 watts to 1400 watts.

This invention provides a thiourea-tertiary amine bifunctional chitosan microsphere and its preparation method, belonging to the field of adsorption material technology. Through a stepwise functionalization and sequential crosslinking method, thiourea groups are first introduced onto the chitosan microspheres, followed by the introduction of tertiary amine groups and secondary crosslinking, successfully preparing chitosan microspheres possessing both thiourea and tertiary amine bifunctional groups. The thiourea and tertiary amine groups in the microspheres of this invention exhibit a synergistic adsorption effect on noble metal chloride anions, significantly improving the selective adsorption capacity and adsorption rate for noble metals such as palladium, platinum, and rhodium. Simultaneously, the dense three-dimensional network structure constructed through stepwise crosslinking greatly enhances the chemical stability and mechanical strength of the microspheres under strongly acidic environments, extending their service life. This preparation method is simple, mild, and environmentally friendly. The prepared adsorbent is particularly suitable for the efficient and selective recovery of noble metals from complex acidic wastewater or electronic waste leachates.

A wet etching chemistry to selectively remove a polymer residue on an opening embedded in a low-k dielectric layer and an underlying stop layer in a process of forming an interconnect structure is provided. The wet etching chemistry includes: two type of organic solvents, wherein a concentration of the two type of organic solvents is greater than or equal to 70%; an Alkali source amine, at least comprising a tertiary amine; an inhibitor; and water. In some embodiment, the wet etching chemistry is free of a peroxide to avoid damage to the WdC hard mask.

We provide a water-based resin. [Solution] The aqueous resin is an ammonium salt formed by reacting an aromatic acid with an alkaline compound neutralization ring-opening intermediate compound. The alkaline compound neutralization ring-opening intermediate compound is formed by neutralizing the ring-opening intermediate compound with an alkaline compound, and the ring-opening intermediate compound is formed by carrying out a ring-opening reaction of a copolymer containing maleic anhydride using a tertiary amino alcohol. The chemical structures of the copolymer containing maleic anhydride, the tertiary amino alcohol, and the aromatic acid are as follows (wherein the formulas, the symbols are as defined in the specification). TIFF2026092659000036.tif25129

The application relates to the technical field of photovoltaic cells, in particular to a solvent composition, a perovskite thin film and a preparation method thereof and a solar cell. The solvent composition comprises: a main solvent with a boiling point greater than 150 DEG C, the main solvent being selected from at least one of a perfluoroalkane compound and a perfluoro tertiary amine compound; an extraction solvent with a boiling point greater than 150 DEG C, the extraction solvent being selected from at least one of an aromatic ether compound, a halogenated aromatic hydrocarbon compound and an ester compound; and an adjusting solvent with a polarity between the polarities of the main solvent and the extraction solvent. The solvent composition provided by the application realizes mild and controllable extraction through the synergistic effect of the main solvent, the extraction solvent and the adjusting solvent, improves the crystallization quality of the thin film, the temperature of solvent bath annealing treatment can reach above the conversion temperature of the photoactive phase of the perovskite thin film, the phase transition is sufficient, and the photoelectric performance of the device is improved.