130 results about "Cyclic hydrocarbon" patented technology

The lithium ion battery comprises a positive electrode, a negative electrode and a non-aqueous electrolyte, the negative electrode comprises a negative electrode active material, the negative electrode active material comprises graphite and an amorphous carbon layer coating the surface of the graphite, the thickness of the amorphous carbon layer is X [mu] m, and the non-aqueous electrolyte comprises a first additive, the first additive comprises a compound A with a structure of a chemical formula 1, R1 and R2 are independently selected from hydrogen, a nitrile group, a carbonyl group, a C1-C12 alkyl group, a C2-C12 alkenyl group, a C2-C12 alkynyl group and a C3-C12 cyclic alkyl group, the mass percent of the compound A in the non-aqueous electrolyte is a%, 0.1 < a < 20, and X and a meet the condition that X / a is more than 1 and less than 10. According to the invention, the compound A is introduced into the non-aqueous electrolyte as an additive, and the fast charge cycle performance of the lithium ion battery can be effectively improved by regulating and controlling the relationship between the thickness of the amorphous carbon layer and the content of the compound A. # imgabs0 #

To provide an acid generator, a resist composition and the like which allow a resist pattern having a good pattern collapse margin to be produced.SOLUTION: The acid generator contains a salt represented by formula (I) [where Lb1 and Lb2 each represent a single bond or a substituted / unsubstituted hydrocarbon group; R3 represents a halogen atom, a haloalkyl group or a substituted / unsubstituted hydrocarbon group; m3 represents an integer of 0-4; nb1 represents an integer of 1-6; R4-R7 each represent an H atom or a substituted / unsubstituted hydrocarbon group, -CH2- contained in the group may be substituted with -O-, -S- or the like, R3 and R4, or R3, R4 and R5 may be bonded together to form a cyclic hydrocarbon group which may have a double bond, the cyclic hydrocarbon group may have double bonds between one or more pairs of two adjacent carbon atoms, and -CH= contained in the cyclic hydrocarbon group may be substituted with -N=; and Z+ represents an organic cation].SELECTED DRAWING: None

The invention belongs to the technical field of materials, and particularly relates to high-temperature-resistant resin, a light-cured composition and application of the light-cured composition. The high-temperature-resistant resin is at least polymerized from the following raw materials: a hydrocarbon compound with an olefinic unsaturated double-bond chain segment at the tail end; a terminal unsaturated carboxylic acid; and a substituted maleimide compound, in which a substituent group is a substituted or unsubstituted polynuclear cyclic hydrocarbon group, and a substitution site is hydrogen on N. The photocuring composition comprises high-temperature-resistant resin, a resin monomer, a photopolymerization initiator, an auxiliary agent and a solvent. The photocuring composition provided by the invention is applied to the fields of preparation of organic display light-emitting devices, liquid crystal displays and the like, and has the advantages of good heat resistance, high bonding strength, good chemical resistance and the like.

To provide an acid generator, a resist composition and the like which allow a resist pattern having good line edge roughness to be produced.SOLUTION: The acid generator contains a salt represented by formula (I), and the resist composition contains the acid generator. [In the formula, Q1, Q2, R1 and R2 each represent an H atom, an F atom or the like; z represents an integer of 0-6; X1 and X2 each represent -CO-O-, -O-CO- or the like; L1 and L2 each represent a single bond or a substituted / unsubstituted hydrocarbon group; W1 represents a cyclic hydrocarbon group; X represents a halogen atom or a haloalkyl group; R3 and R4 each represent a halogen atom, a haloalkyl group or the like; R5 represents a hydrogen atom or a group forming an acetal structure or the like; m3 and m4 represent integers of 0-3, m5 represents an integer of 0-4, and m6 represents 2 or 3; Z+ represents an organic cation; L10 represents a single bond or an alkanediyl group; Raa1 and Raa2 each represent an H atom or a hydrocarbon group; Xa represents a single bond, an O atom or the like; Raa3 represents a hydrocarbon group; and m51 and m52 each represent 0 or 1.]SELECTED DRAWING: None

The present invention discloses a hydrocracking method for producing chemical raw materials. The method includes: (1) in the presence of hydrogen, a hydrocarbon oil raw material enters a first hydrocracking reaction zone to selectively crack the n-alkanes in the hydrocarbon oil raw material to obtain a first hydrocracking product; wherein, in the first hydrocracking product, the mass content of C7 + n-alkanes is controlled below 5.0%; (2) in the presence of hydrogen, the first hydrocracking product enters a second hydrocracking reaction zone to obtain a second hydrocracking product containing monocyclic cyclic hydrocarbons; (3) the second hydrocracking product is separated and fractionated to obtain a gas fraction, light naphtha, and heavy naphtha. When using the hydrocarbon oil as a raw material to produce chemical raw materials, this method can significantly improve the yield and quality of chemical raw materials.

A curable composition for spray coating contains 100 parts by weight of a polyalkylene oxide-based polymer (A) having a reactive silicon group, 10 to 50 parts by weight of a hydrocarbon-based diluent (B), 30 to 90 parts by weight of a plasticizer (C) which is a dicarboxylic acid ester containing a cyclic hydrocarbon group, and 0.6 to 7 parts by weight of a polyamide-based rheology modifier (D). A cured film is produced by spraying the above curable composition on the surface of a substrate and curing it.

The present invention relates to catalyst composition for cyclic carbonate production from CO2 and epoxides under mild conditions, which can effectively catalyze the cyclic carbonate synthesis and provides good selectivity to cyclic carbonate, wherein said catalyst composition comprising:a) the metal complex as shown in structure (I):wherein,M represents transition metal atom;R1, R2, and R3 represent independent group selected from hydrogen atom, halogen atom, alkyl group, alkenyl group, alkynyl group, alkoxy group, amine group, phenyl group, benzyl group, cyclic hydrocarbon group comprising hetero atom, perfluoroalkyl group, or nitro group;R4 represents group selected from alkylene group, cycloalkylene group, or phenylene group;X represents group selected from hydrogen atom, acetate group, or triflate group; andb) the organic compound as the co-catalyst selected from compound containing nitrogen, compound of quaternary ammonium salts, or compound of iminium salts.

There is provided a compound represented by general formula (1) or an ionized form thereof for use in the preparation of lipid nanoparticles encapsulating therapeutic, prophylactic and / or biological agents: wherein NR1R2 is a group ionizable at pH from 3 to physiological pH; a comprises a linear aliphatic hydrocarbon, a branched aliphatic hydrocarbon and / or a cyclic hydrocarbon, optionally comprising one or more groups selected from the group consisting of-OH,-NR-,-O-,-O-CxH2x-O-, where x > = 1; and wherein R is H, an optionally substituted alkyl group, an optionally substituted alkenyl group, or an optionally substituted alkynyl group; r3, R4, R5, R6 and R7 are each independently H, an optionally substituted alkyl group, an optionally substituted alkenyl group or an optionally substituted alkynyl group; and R8 and R9 are each independently a hydrophobic group.

The present invention provides a process for preparing a 2-(3-alkenyl)-1,3-butadiene compound of the following general formula (A), wherein R1 and R2 represent, independently of each other, a hydrogen atom or a linear, branched, or cyclic hydrocarbon group having 1 to 20 carbon atoms and optionally having an unsaturated bond(s), the process comprising the step of subjecting a secondary allylsulfone compound of the following general formula (G), wherein R1 and R2 represent, independently of each other, a hydrogen atom or a linear, branched, or cyclic hydrocarbon group having 1 to 20 carbon atoms and optionally having an unsaturated bond(s), W represents an arenesulfonyl group, and Z represents a halogen atom, to a reductive removal of an arenesulfonyl group, W, at an allyl position, and then subjecting the secondary allylsulfone compound (G) to an elimination reaction of a hydrogen halide, HZ, in this order or in reverse order, to form the 2-(3-alkenyl)-1,3-butadiene compound (A).

The invention relates to a method for preparing an at least partially acetal-protected sugar, involving the step of reacting a sugar or a sugar derivative selected from the group consisting of valeraldoses, hexanoses, valeraldoglycosides and hexanoglycosides with an aldehyde or a source of aldehyde in the presence of a heterogeneous acidic catalyst, forming an at least partially acetal-protected sugar selected from the group consisting of compounds of formulae (I), (II), (III), (IV), (V), (VI,) (VII), (VIII), (IX), (X), (XI) and (XII), # imgabs0, r1, R1 ', R2, R2', R3, R3 ', R4, R5, R6, R7, R8, R9, R10, R11, R12 and R12' are Y or Z-E, where R1 and R1 ', R2 and R2', R3 and R3 ', R12 and R12' are equal to or different from each other and Y is hydrogen or a linear, branched or cyclic hydrocarbon moiety having 1 to 20 carbon atoms, Z is a linear, branched or cyclic hydrocarbon moiety having 0 to 12 carbon atoms, optionally substituted with 1 to 4 C1 to C4 alkyl groups, 1 to 4 halogen atoms or benzyl groups, e is-COOH,-CH (COOH) 2,-COOR19,-CH (COOR20) (COOR21),-CHO,-CH (CHO) 2,-C2H3, CH (C2H3) 2,-CHCHR22,-CHCR23R24,-C2H,-C2R25,-N3,-NH2,-CH (NH2) 2,-NHR26,-CH (NHR27) (NHR28),-NR29R30,-CH (NR36OH),-OH,-OR35,-CH (R36OH), and R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R32, R33, R34 and R37OH and R13, R14, R15, R16, R17 and R18 are each independently hydrogen or a linear, branched or cyclic hydrocarbon moiety having 1 to 20 carbon atoms.

To provide a carboxylate, a carboxylic acid generator, and a resist composition which allow a resist pattern having good CD uniformity to be produced.SOLUTION: There are provided: a carboxylic acid generator containing a carboxylate represented by formula (I); and a resist composition. [In the formula, W1 represents a substituted / unsubstituted cyclic hydrocarbon group; L1 represents a single bond or a substituted / unsubstituted hydrocarbon group, L2 represents a substituted / unsubstituted hydrocarbon group, and -CH2- in the groups may be substituted with -O-, -S-, -SO2-, -NR11-, -CO- or the like; R1 and R11 each represent a hydrogen atom or an alkyl group; L3 represents a single bond or an alkanediyl group, and -CH2- in the group may be substituted with -O- or -CO-; R5 represents -X51-R10 or -X52-L11-X51-R10, X51 and X52 each represent -CO-O-, -O-CO- or the like, L11 represents a substituted / unsubstituted hydrocarbon group, and R10 represents an acid-labile group; and Z+ represents an organic cation.]SELECTED DRAWING: None

A composition comprising an oily medium system and an active ingredient, and a method of increasing the bioavailable rate of an active ingredient, where the method comprises incorporating the active ingredient into an oily medium system, and where the oily medium system contains a vegetable oil and / or a component of a vegetable oil, the liquid does not contain the following substances: a phosphate buffer solution, polyethylene glycol, dimethyl sulfoxide, ethanol, polypropylene glycol, polysorbate, ethyl acetate, 12-hydroxystearic acid hydroxyethyl ester and tocopherol polyethylene glycol succinate; the active ingredient is selected from the group consisting of compounds of formula (I) wherein T1 is a C6 cyclic hydrocarbon and R1 is a C1-C8 aliphatic hydrocarbon group, pharmaceutically acceptable salts thereof, and combinations thereof.

The application discloses a kind of bivalent ligand molecules for targeting BCL6 protein degradation and application thereof, it is related to the technical field of drug development;The structure general formula of the bivalent ligand molecules for targeting BCL6 protein degradation is as follows: M1-L-M2;Wherein, M1 and M2 are independent structure same or different BCL6 protein ligand;L is any chain or cyclic hydrocarbon fragment capable of forming covalent bond with BCL6 ligand.The application also provides the application of the bivalent ligand molecules in the preparation of anti-tumor and / or immune disease drugs.The bivalent ligand molecules can exert good anti-tumor activity on a variety of BCL6-dependent tumors by selectively inducing BCL6 protein degradation, and are also related to the occurrence of a variety of immune diseases, and can be used in related tumor and immune disease drugs.

Provided is a method for preparing a regenerated polymer, comprising: (S1) supplying a mixed solvent of a first solvent comprising a C3-8 alkyl acetate and a second solvent of a non-aromatic cyclic hydrocarbon to a dissolving tank and a precipitation tank, respectively; (S2) supplying a composite resin to the dissolving tank, heating to a dissolving temperature, and dissolving a polymer contained in the composite resin while maintaining the dissolving tank at the dissolving temperature to obtain a polymer solution; (S3) supplying the polymer solution into the precipitation tank, maintaining the mixed solvent in the precipitation tank at a precipitation temperature, and precipitating the polymer contained in the polymer solution to obtain a solution containing a polymer precipitate having a spherical shape; and (S4) press-filtering the solution containing the polymer precipitate having a spherical shape to obtain the polymer precipitate.

The purpose of the present invention is to provide: a compound capable of forming a surface layer having excellent oil repellency; a surface treatment agent; an article having a surface layer formed from the compound; and a method for producing the article.　This compound is represented by the formula: (Rf)n-L3-L4-L1-(T1)x1. Rf is -OCF3 or the like; n is an integer of 2 or more; L3 is an (n+1)-valent group having no fluorine atom and no organosiloxane residue, or an (n+1)-valent group having no organosiloxane residue, and including a cyclic hydrocarbon group that may contain an oxygen atom or a nitrogen atom as a ring member atom, in which at least one hydrogen atom is substituted with a fluorine atom; L4 is a divalent hydrocarbon group which may have a group such as -O-; L1 is a single bond or a trivalent or higher (1+x1)-valent group; T1 is a reactive group excluding a specific group; and x1 is an integer of 1-10.

A purpose of the present invention is to provide a pressure-sensitive adhesive tape that has excellent level-difference conformability and excellent bending resistance, and that is capable of maintaining adhesion reliability even in a high-temperature and high-humidity environment. Another purpose of the present invention is to provide an electronic device including said pressure-sensitive adhesive tape. The present invention pertains to a pressure-sensitive adhesive tape that has a pressure-sensitive adhesive agent layer having a foamed structure. The pressure-sensitive adhesive agent layer contains an acrylic copolymer that has structural units derived from a (meth)acrylic acid ester having a hydrocarbon group. The structural units derived from a (meth)acrylic acid ester having a hydrocarbon group are represented by formula (1), and include a structural unit derived from a (meth)acrylic acid ester that, when being formed into a homopolymer, exhibits a glass transition temperature of 120°C or more. In the formula, R1 represents a hydrogen atom or a methyl group, R2 represents a hydrogen atom or a hydrocarbon group, and R3 and R4 each independently represent a hydrocarbon group or are bonded as R3-C-R4 to form a cyclic hydrocarbon group.

A layered optical film in which at least an iodine-based polarizer and an optical film are laminated with an adhesive layer therebetween, wherein the adhesive layer is a cured product layer of an adhesive composition containing at least a (meth)acrylate compound and a photopolymerization initiator, and the adhesive composition contains 70 parts by mass or more of a (meth)acrylate (A) having a cyclic hydrocarbon skeleton in the molecule on the basis of 100 parts by mass in total of the (meth)acrylate compound. The (meth)acrylate (A) is preferably a compound having 5-12 carbon atoms constituting the cyclic hydrocarbon skeleton in the molecule.

Provided is a silicone-containing copolymer that is capable of reducing an environmental burden and gives an effect of suppressing the occurrence of foreign substances due to the sublimation of a pigment on the surface of a coated film. Specifically, the silicone-containing copolymer contains: a polymerizable monomer (A) having a group represented by General Formula (a) described below; and a polymerizable monomer (B) having a group including a cyclic hydrocarbon skeleton, as at least a polymerization component.

The invention discloses environment-friendly organic silicon resin and a preparation method thereof. The structural formula of the environment-friendly organic silicon resin is (R1SiO1.5) a (R2R3SiO) b (SiO2) cR4, wherein R1, R2 and R3 are at least one of cyclic hydrocarbon groups, chain hydrocarbon groups, aromatic hydrocarbon groups and hydrogen groups; r4 is an active group in the environment-friendly organic silicon resin and is alkoxy or hydroxyl; a, b and c represent the molar ratio of each chain link and are numbers which are less than 1, greater than or equal to 0 but not all 0, and a + b + c = 1. The invention also provides a preparation method of the environment-friendly organic silicon resin, and the preparation method comprises the following steps: carrying out partial hydrolysis reaction on alkoxy silane under the protection of alcohol, neutralizing, filtering, and carrying out catalytic polymerization under the protection of a solvent to finally obtain the environment-friendly organic silicon resin. According to the preparation method, acid water and acid gas which are difficult to treat cannot be generated in the process, corrosion to equipment is avoided, the process is relatively simple and environment-friendly, the reaction is easy to control, an environment-friendly solvent is selected, and harm to a human body is small.

Novel anion receptor; and a nonaqueous liquid electrolyte and a gel type or solid polymer electrolyte, which contain same. The receptor is composed of a compound formed from silicon-nitrogen bond structures, such as a novel silazane in which an amine group substituted with an electron withdrawing group is introduced to a silicon atom or in which an electron withdrawing group is introduced to a nitrogen atom, or being composed of a mixture of the compound formed from silicon-nitrogen bond structures, such as the novel silazane, and a composition selected from among linear hydrocarbon, cyclic hydrocarbon, polyalkylene oxide and siloxane compounds in which an amine group substituted with an electron withdrawing group is introduced or an electron withdrawing group is introduced to the nitrogen atom in a ring; improving the ion conductivity and cation transport rate of an electrolyte containing same; and increasing the electrochemical stability of an alkali metal battery.

Provided is a silicone-containing copolymer that is capable of reducing an environmental burden and gives an effect of suppressing the occurrence of foreign substances due to the sublimation of a pigment on the surface of a coated film. Specifically, the silicone-containing copolymer contains: a polymerizable monomer (A) having a group represented by General Formula (a) described below; and a polymerizable monomer (B) having a group including a cyclic hydrocarbon skeleton, as at least a polymerization component.

Provided are ion exchange resins comprising an insoluble matrix having functional groups bonded thereto, the functional groups comprising a quaternary alkylphosphonium salt represented by the formula: - P(R1R2R3)+ X- wherein X- is an anionic counterion; and R1, R2 and R3 are independently acyclic hydrocarbon groups having a carbon chain length of C4 to C18. Systems for PFAS removal from water and methods of PFAS removal from water are also provided.

The invention relates to a green catalysis method for preparing propyl cyclohexane through hydrodeoxygenation reaction of 4-propyl guaiacol, in particular to a method for preparing propyl cyclohexane through one-pot reduction of sodium lignin sulfonate in a water phase and catalysis of complete hydrodeoxygenation reaction of 4-propyl guaiacol through stable Pt nanoparticles. Belongs to the technical field of catalytic preparation of biomass-based high-value chemicals. According to the method, the derivatization product sodium lignin sulfonate of the byproduct black liquor in the papermaking industry is used as a reducing agent and a stabilizing agent, chloroplatinic acid is subjected to in-situ reduction in a water phase and generated metal Pt nano particles are stabilized under the condition that no other auxiliary reagents are needed, and a clean water-phase catalytic system is obtained; and the catalyst is directly used for the hydrodeoxygenation reaction of 4-propyl guaiacol to prepare the propyl cyclohexane. The method provided by the invention has the characteristics of simple preparation of a catalytic system, high activity, mild reaction conditions and the like, and provides a simple and green new way for preparing the saturated cyclic hydrocarbon by taking the lignin platform compound as a raw material through complete hydrodeoxygenation.

The present invention discloses a method for producing chemical raw materials by two-stage hydrocracking of wax oil. The method comprises: hydrocracking the wax oil raw material in the presence of hydrogen to first obtain a first hydrocracking product with a low polycyclic alkane content; then selectively cracking the normal paraffins in the first hydrocracking product to obtain a second hydrocracking product; separating and fractionating the second hydrocracking product to obtain gas, light naphtha, heavy naphtha, and tail oil; finally, mixing the tail oil with hydrogen and hydrocracking it to convert it into a third hydrocracking product containing monocyclic cyclic hydrocarbons; separating and fractionating the third hydrocracking product to obtain a gas fraction, light naphtha, and heavy naphtha; wherein the reaction pressure of the first hydrocracking reaction zone is 2.0 to 5.0 MPa higher than the reaction pressure of the third hydrocracking reaction zone. This method can significantly improve the yield and quality of chemical raw materials when using wax oil as a raw material for two-stage hydrocracking production of chemical raw materials.

The invention relates to a process for extracting rare earths from an aqueous solution A1, comprising contacting A1 with an organic solution and then separating the aqueous and organic solutions, the organic solution comprising an HDES consisting of: - a first compound of formula (I) or (II): in which: R1 to R4 = alkyl group in C1 to C18; R5 to R8 = H or alkyl group in C1 to C18; R9 to R12 = alkyl group in C1 to C18; R13 and R14 = H, alkyl group in C1 to C18 or –(CH2)nOR group in which n is an integer from 1 to 8 and R = alkyl group in C1 to C8; and the total number of carbon atoms is at least 24; and- a second compound of formula R'-OH or R'-COOH, in which R' = acyclic or cyclic hydrocarbon group, saturated or unsaturated, possibly comprising one or more branches and whose total number of carbon atoms ranges from 6 to 28.The invention also relates to a method for recovering rare earths by implementing this extraction process.

The present application provides a photopolymer printing original plate for relief printing, which has excellent resistance to swelling of an oily ink containing an ester compound. A photopolymer printing original plate for relief printing, which has a photosensitive resin layer formed from a photosensitive resin composition containing at least a high molecular compound (A), a dibasic acid diester (B) represented by the following general formula (I), a photopolymerizable compound (C), and a photopolymerization initiator (D), characterized in that the content of the dibasic acid diester (B) in the photosensitive resin composition is 2.5 to 15 mass %.(In the formula, R 1 represents a divalent aliphatic hydrocarbon group having 2 to 8 carbon atoms, a divalent aromatic hydrocarbon group having 6 to 14 carbon atoms, or a divalent aliphatic cyclic hydrocarbon group having 4 to 14 carbon atoms; R 2 and R 3 may be the same as or different from each other, and represent a linear or branched aliphatic hydrocarbon group having 1 to 12 carbon atoms.)

A method for manufacturing a β-lactam compound includes the following steps: introducing a reaction solution (i), a solution of an acid halide (ii), and a solution (iii) of a β-lactam compound (a) having an amino group into different flow paths, allowing each solution to flow within its respective flow path. The reaction solution (i) is a reaction solution obtained by dissolving a metal salt (y) of formula (2) obtained by introducing a protecting group onto the amino group of the metal salt (x) in a solution of formula (1); generating a mixed acid anhydride by merging the reaction solution (i) and solution (ii); and generating a β-lactam compound (b) having an amide bond by merging the merged liquid (M1) and solution (iii). In the formulas, R represents a cyclic hydrocarbon group, M represents an alkali metal, and X represents a protecting group.

The present invention discloses a method for pre-oxidizing cyclic hydrocarbons to promote cracking. In the present invention, oxygen or air is used to partially pre-oxidize and convert cyclic hydrocarbons at a temperature lower than the boiling point of the cyclic hydrocarbons under pressurized conditions, and the conversion rate of the cyclic hydrocarbon raw material after the pre-oxidation operation does not exceed 15%; the liquid-phase product obtained after the pre-oxidation operation is used for cracking. The present invention adopts a method of pre-oxidizing cyclic hydrocarbons to convert part of the cyclic hydrocarbons into cyclic hydrocarbon derivatives with oxygen-containing functional groups. The cyclic hydrocarbon derivatives with oxygen-containing functional groups can be cracked first to generate active free radicals during the cracking process due to their lower bond energy C-O or O-O chemical bonds, thereby promoting the ring-opening cracking of the remaining cyclic hydrocarbons and greatly improving the conversion rate of cyclic hydrocarbons; the present invention has the advantages of strong production capacity, low use cost, long operation cycle, low energy consumption, and less carbon deposition.

An object of the present invention is to provide a polymerizable composition which has excellent wettability to various substrates having a wide range of polarity from low polarity to high polarity, such as an organic substrate, an inorganic substrate, and a substrate formed of an organic-inorganic composite material, has high transparency and curability, and can provide a cured product having excellent water resistance by being cured, a polymer of the polymerizable composition, and a coating agent composition using the same.SOLUTION: The coating agent composition comprises a polymerizable composition containing an N-substituted (meth) acrylamide (A) represented by general formula [1] and / or a polymer thereof. (In the formula, R1 represents hydrogen or methyl, one of R2 and R3 represents a chain hydrocarbyl group having 6 or more carbon atoms or a cyclic hydrocarbyl group having 6 or more carbon atoms, and the other represents hydrogen, a chain hydrocarbyl group having 1 or more carbon atoms, or a cyclic hydrocarbyl group having 3 or more carbon atoms.). )

An object is to provide a carboxylate, a carboxylic acid generator, and a resist composition capable of producing a resist pattern having good line edge roughness. 【Solution means】A carboxylic acid generator and a resist composition containing the carboxylate represented by formula (I). TIFF2026048054000182.tif33157 [In the formula, W 4 , 4 , 4 , 1 , 2 , 1 , 1 , 10 , + is a substituted / unsubstituted cyclic hydrocarbon group; L 10 is a single bond or a substituted / unsubstituted hydrocarbon group; A 1 is a hydrocarbon group; R 1 is a hydrogen atom or a hydrocarbon group; L 1 is a single bond or an alkanediyl group; L 2 is an alkanediyl group; Ar is an aromatic hydrocarbon ring; R 4 is a halogen atom, a cyano group, a hydrocarbon group, etc., and two Rs 4 may combine together to form a ring having another R 4 ; m4 is an integer from 0 to 6; mm2 is an integer from 1 to 5, Z + represents an organic cation. ]