57 results about "Sulfenamide" patented technology

The present invention discloses a high thermal conductivity rubber material and a preparation method thereof, and relates to the technical field of rubber production, the high thermal conductivity rubber material comprises a rubber matrix, modified carbon black, a vulcanizing agent, a composite accelerator, an anti-aging agent, zinc oxide, stearic acid, white carbon black, montmorillonite and aramid pulp according to a weight ratio of 100: (40-60): (1.5-3): (2-4): (1-3): (3-8): (1-3): (10-20): (5-15): (3-8); the modified carbon black is prepared by reacting a composite modifier solution prepared from a silane coupling agent, sodium alginate, ammonium polyacrylate, tea polyphenol, polyethyleneimine, nano aluminum oxide and deionized water with carbon black; the composite accelerant is prepared by carrying out pre-dispersion treatment on N-cyclohexyl-2-benzothiazole sulfenamide, tetramethylthiuram disulfide, a rare earth complex and nano zinc oxide. The prepared high-thermal-conductivity rubber material is good in mechanical property and thermal conductivity.

The invention relates to the technical field of preparation of compounds, in particular to a sulfenamide compound and a preparation method thereof. Compared with the prior art, a mild electrochemical method is adopted for preparing the sulfenamide compound forming the N-S bond, in the reaction process, halide salt serving as electrolyte is subjected to oxidation reaction at an anode to obtain free radicals, and after decarburization of an amine compound is promoted by the free radicals and alkali together, the free radicals react with disulfide or mercaptan to form the sulfenamide compound forming the N-S bond; the method disclosed by the invention has the advantages of good substrate compatibility and functional group tolerance, no need of additional addition of an oxidizing agent and a transition metal catalyst, simple reaction post-treatment operation and the like, is convenient to operate, high in atom utilization rate and mild in reaction condition, meets related requirements of green chemistry, and has a good development prospect.

The invention relates to the technical field of tire rubber manufacturing, and discloses a low-odor low-VOC sidewall rubber composition, a mixing method thereof and a tire, a brominated copolymer (BIMS) of isobutene and p-methylstyrene is adopted, and the use of an amine anti-aging agent is canceled; according to the invention, tetrabenzylthiuram disulfide (TBzTD) is adopted as a main accelerant, and a traditional sulfenamide accelerant is replaced; the softening and reinforcing resin is adopted to replace an oil softener, so that small molecular substances in aromatic hydrocarbon oil or naphthenic oil are prevented from being separated out, and phenol possibly generated by using phenolic resin is avoided; carbon black is matched with a small amount of white carbon black, so that odor molecules are effectively adsorbed; and the steps of lifting an upper top peg and opening a charging door for exhausting are added in the plastifying and mixing sections. The synergistic effect of the optimized formula raw materials effectively avoids the generation of odor molecules, the escape of a large number of VOC molecules is improved, and the exhaust step further reduces the residual quantity of the VOC molecules in the final mixed rubber, so that the odor grade of the tire is improved.

This invention discloses an analytical method for benzothiazole contaminants, comprising the following steps: detection by high performance liquid chromatography (HPLC), with the following chromatographic conditions: a phenylhexyl column as the stationary phase, mobile phase A being water, mobile phase B being acetonitrile, and gradient elution; wherein the benzothiazole contaminants are at least one of 2-aminobenzothiazole, 2-hydroxybenzothiazole, benzothiazole, 2-methylbenzothiazole, 2-mercaptobenzothiazole, 2,5-dimethylbenzothiazole, 2-cyanobenzothiazole, ethyl 2-carboxylate benzothiazole, 2-chlorobenzothiazole, 2-bromobenzothiazole, 2-methylthiobenzothiazole, phenylthiocyanate, N-tert-butyl-2-benzothiazole sulfenamide, 2-(2-hydroxyphenyl)-benzothiazole, N-cyclohexyl-2-benzothiazole sulfinamide, dibenzothiazole disulfide, and N,N-dicyclohexyl-2-benzothiazole sulfonamide.

The invention relates to the technical field of rubber, in particular to an off-road tire base rubber composition. Based on 100 parts by weight of natural rubber components, the natural rubber composition further comprises the following components in parts by weight: 20-40 parts of carbon black, 5-15 parts of silicon dioxide hydrate, 5-20 parts of nano zinc oxide, 1-3 parts of stearic acid, 1-3 parts of p-phenylenediamine, 1-3 parts of a ketoamine anti-aging agent, 1-3 parts of bis (triethoxysilyl) propyl tetrasulfide, 1-5 parts of carbon nanotubes CNT, 1-4 parts of N, N '-m-phenylene bismaleimide, 0.5-2 parts of sulfur and 0.5-2 parts of a sulfenamide accelerant. The modulus of the rubber material is improved by adding the CNT, so that the consumption of carbon black is reduced, and heat generation is reduced; by adding nano zinc oxide and carbon nanotubes, the heat conductivity of the rubber material is improved; and by adding the N, N '-m-phenylene bismaleimide, the heat resistance of the rubber material is improved.

A process for manufacturing a rubber composition which comprises more than 50 phr of a diene elastomer rich in ethylene units, a reinforcing filler comprising a carbon black and a vulcanization system comprising sulfur, a sulfenamide as primary accelerator and a thiuram polysulfide or a mixture of a thiuram polysulfide and a guanidine as secondary accelerator is provided. The process comprises mixing the highly saturated diene elastomer, the reinforcing filler and the secondary accelerator by kneading at a temperature above 110° C., in the absence of the sulfur and the primary accelerator, and incorporating the sulfur and the primary accelerator into the rubber composition by kneading at a temperature below 110° C. The process makes it possible to reduce the hysteresis of the vulcanized rubber compositions.

The invention relates to the technical field of NBR composite materials, in particular to a low-temperature-resistant wear-resistant NBR composite material and a preparation method and application thereof. The invention provides a low-temperature-resistant wear-resistant NBR (nitrile-butadiene rubber) composite material, which is prepared from the following components in parts by mass: 100 parts of NBR raw rubber, 2 to 6 parts of zinc oxide, 0.5 to 2 parts of stearic acid, 30 to 80 parts of carbon black, 1 to 3 parts of 2-mercaptobenzimidazole, 2 to 12 parts of oleylamine grafted halloysite nanotubes, 0.5 to 2 parts of sulfur and 0.5 to 4 parts of N-cyclohexyl-2-benzothiazole sulfenamide. According to the low-temperature-resistant wear-resistant NBR composite material, the compatibility of the additive and the NBR raw rubber is good, and the blooming phenomenon is avoided.

The invention relates to the technical field of polymer foam materials, in particular to a rubber-based composite foam material for a middle layer of a shoe sole and a preparation method of the rubber-based composite foam material for the middle layer of the shoe sole. Adding a foaming agent, sulfur, an accelerant N-cyclohexyl-2-benzothiazole sulfenamide and tetrabenzylthiuram disulfide, and carrying out secondary internal mixing to obtain a uniformly mixed styrene butadiene rubber / natural rubber-based rubber compound; putting the rubber compound into an open mill, and discharging bubbles; and finally, carrying out high-temperature curing foaming on the rolled rubber compound by using a plate vulcanizer. The rubber-based composite foam material obtained by the invention has the characteristics of simple process, light weight, uniform foam holes, high elasticity and high tensile strength, and is suitable for middle-layer materials of soles.

The invention discloses a preparation method of (R)-(+)-tert-butyl sulfinamide. The preparation method comprises the following steps: 1, chlorinating a compound I to obtain a compound II; 2, substituting the compound II to obtain a compound III; 3, carrying out chiral oxidation on the compound III to obtain a compound IV; and 4, carrying out N-deprotection on the compound IV to obtain a compound V. According to the method, tert-butyl mercaptan is taken as a raw material, and the target product (R)-(+)-tert-butyl sulfinamide is obtained through four-step reaction of chlorination, substitution, chiral oxidation and deprotection. The safety risk of materials used in the reaction is low, compared with a traditional route, liquid ammonia is not needed to serve as a solvent for cryogenic reaction, the equipment requirement is low, operation is easy, the three-waste amount is small, the yield is high, the product quality is high, and the method is suitable for industrial production.

The invention belongs to the technical field of high polymer materials, and particularly relates to an elastomer composite material and application thereof in shoulder cushion rubber of a tire. The elastomer composite material is prepared from 85 to 100 parts of high-end natural rubber, 0 to 15 parts of 1, 4-polybutadiene polymer, 6 to 12 parts of zinc oxide, 2 to 5 parts of stearic acid, 25 to 45 parts of carbon black, 5 to 15 parts of white carbon black, 1.1 to 1.9 parts of silane coupling agent, 3 to 10 parts of aromatic oil, 1.7 to 5.2 parts of anti-aging agent, 0.4 to 1 part of low rolling resistance modifier, 1.3 to 1.9 parts of insoluble sulfur, 0.2 to 1.2 parts of sulfenamide accelerant, 0.3 to 1.5 parts of anti-vulcanization reducing agent and 0.1 to 0.6 part of scorch retarder. The elastomer composite material provided by the invention can transfer and absorb stress concentrated on a tire shoulder part under a dynamic condition, has the performance characteristics of high tear strength and relatively low heat generation, and is suitable for tire shoulder cushion rubber of an aircraft tire.

The invention discloses a rubber-based high-wear-resistance composite groove belt and a preparation method thereof, and relates to the technical field of wear-resistant materials. Modified ethylene propylene diene monomer and modified polytetrafluoroethylene are internally mixed for 3-5 min, and a rubber matrix is obtained; the preparation method comprises the following steps: sequentially adding modified carbon black, white carbon black, modified nano zinc oxide, stearic acid and paraffin oil into a rubber matrix, uniformly mixing, standing for 16-24 hours, adding sulfur, dicumyl peroxide and N-cyclohexyl-2-benzothiazole sulfenamide, uniformly mixing, and carrying out thin passing for 3-5 times to obtain a rubber compound; and carrying out extrusion molding on the rubber compound, vulcanizing, cooling and sizing to obtain the composite groove belt.

The invention belongs to the technical field of organic synthesis, and particularly relates to a synthetic method of a methionine NH-thioimine derivative and a polypeptide compound thereof. According to the invention, methionine ester or polypeptide molecules containing methionine ester are used as raw materials, and the methionine NH-thioimine derivative stably existing in an inner salt form or a polypeptide compound containing a methionine NH-thioimine structure is obtained through oxidative amination and one-time removal of a trifluoroacetyl protecting group and ester, so as to solve the problem of S, S-dimethyl sulfoxide. The method solves the problem that methionine thioimine cannot be widely applied due to instability of an S, S '-dialkyl thioimine structure in the prior art, realizes stable preparation of an unstable thioimine structure, is simple to operate, mild in condition and good in functional group compatibility, is suitable for preparation of various polypeptide molecules containing methionine NH-thioimine, and has wide application prospects. And a key technical support is provided for construction of a pharmacophore library containing methionine NH-thioimine.

A rubber composition for a base tread according to an embodiment includes a rubber component containing 70 mass % or more of natural rubber, a first filler that is carbon black having an N2SA of less than 60 m2 / g, a second filler that is carbon black having an N2SA of 60 m2 / g or more and / or silica, sulfur, and a sulfenamide-based vulcanization accelerator. Per 100 parts by mass of the rubber component, the amount of the first filler is 10 to 45 parts by mass, the amount of the second filler is 15 to 30 parts by mass, the total amount of the first filler and the second filler is 35 to 60 parts by mass, the amount of the sulfur is 1.6 to 3.0 parts by mass, and the amount of the sulfenamide-based vulcanization accelerator is 1.6 to 3.0 parts by mass.

The present invention addresses the problem of providing a rubber composition having improved heat resistance while suppressing blooming and ensuring tackiness. The means for solving the problem is a rubber composition containing a rubber component, two or more sulfenamide-based vulcanization accelerators, and one or more thiuram-based vulcanization accelerators, wherein the content of each of the two or more sulfenamide-based vulcanization accelerators is 3.7 parts by mass or less per 100 parts by mass of the rubber component, and the total content of the two or more sulfenamide-based vulcanization accelerators is 4 parts by mass or more per 100 parts by mass of the rubber component.

The application discloses a chiral thioimine lipid compound and a preparation method and application thereof, and the preparation method comprises the following steps: stirring sulfenamide, isobutyl alcohol, MS, a metal center chiral cobalt (III) complex anion and super-dry tetrahydrofuran at-40 DEG C for 30 minutes, then adding N-iodosuccinimide, and reacting at the same temperature for 36 hours; after the reaction is completed, the reaction is quenched by using an aqueous Na2S2O3 solution, and the chiral thioimine lipid compound is obtained through separation and purification; the chiral thioimine lipid compound prepared by the application provides a robust and practical method for solving the challenging asymmetric problem in sulfur stereochemistry, and opens up a road for a new type of chiral sulfur-containing compound which has a wide application in the fields of medicine and pesticides.

The invention belongs to the field of rubber materials, and particularly relates to a durable high-resilience rubber composite material and a preparation method thereof. The rubber composite material provided by the invention is prepared from the following raw materials: natural rubber, high trans-1, 4-butadiene-isoprene copolymer rubber, high butadiene rubber, epoxy natural rubber grafted lignosulfonate, tetrapod-like zinc oxide whiskers, nano spherical zinc oxide, stearic acid, an anti-aging agent, a flame retardant, a vulcanizing agent, a first accelerant and a second accelerant. The first accelerant is selected from sulfoxide diethyldithiocarbamate, sulfoxide dibenzyl dithiocarbamate, sulfone dithiocarbamate and sulfone dibenzyl dithiocarbamate, and the second accelerant is selected from sulfoxide diethyldithiocarbamate, sulfoxide dibenzyl dithiocarbamate, sulfone dithiocarbamate and sulfone dibenzyl dithiocarbamate; the second accelerant is 4, 4 '-dithio-dimorpholine, 2-morpholinyl dithio-benzothiazole, N-oxydiethylene-2-benzothiazole sulfenamide, and dibenzoyl morpholine. The invention further discloses a preparation method of the flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame-retardant flame retardant. The rubber composite material provided by the invention has excellent high resilience and use durability.

The object of this invention is to provide a rubber composition that suppresses bloom and maintains tack while improving heat resistance. [Solution] A rubber composition comprising a rubber component, two or more sulfenamide-based vulcanization accelerators, and one or more thiram-based vulcanization accelerators, wherein the content of each of the two or more sulfenamide-based vulcanization accelerators is 3.7 parts by mass or less per 100 parts by mass of the rubber component, and the total content of the two or more sulfenamide-based vulcanization accelerators is 4 parts by mass or more per 100 parts by mass of the rubber component.

The application discloses a kind of tumor in situ catalytic production of hydrogen sulfide nano-drug and its preparation and application, belong to medical technology field.The application is with nano covalent organic framework TfpPA as main body structure, then bond hydrogen sulfide donor small molecule S-benzoyl sulfenamide is prepared to obtain nano-drug, realizes tumor in situ catalytic production H2S.Nano-drug of the application can be delivered H2S to tumor site, induces tumor ICD, while down-regulating IDO1 expression and inhibiting IDO1 activity, to trigger specific anti-tumor immune response to kill tumor, and reverse the immunosuppressive environment of tumor Sensitization immunotherapy effect, finally reach the effect of inhibiting tumor metastasis and recurrence.

The invention discloses a preparation method of a chiral thioimine compound, and belongs to the technical field of visible light catalysis and organic synthesis.The preparation method comprises the steps that a compound containing inert carbon-hydrogen bonds and a sulfenamide compound serve as raw materials, N-[(9R)-6 '-methoxyl cinchonin-9-yl]-8-quinoline sulfonamide serves as a chiral ligand, fluorobenzene serves as a solvent, and the chiral thioimine compound is prepared through a one-step reaction; under the action of a copper salt and an oxidizing agent, the copper salt, a sulfenamide compound and N-[(9R)-6 '-methoxyoctann-9-yl]-8-quinoline sulfonamide form a copper complex under the irradiation of visible light at room temperature in a protective atmosphere, the copper complex enters an excited state under the irradiation of the visible light, and the oxidizing agent is cracked through an energy transfer or single electron transfer process, so that the copper complex is obtained. The free radicals activate inert carbon-hydrogen bonds to generate alkyl free radicals, the alkyl free radicals react with sulfenamide in the copper complex, asymmetric vulcanization of the inert carbon-hydrogen bonds is achieved, and the chiral thioimine compound is obtained.

The invention discloses a rubber product low-temperature vulcanization accelerator and a preparation method thereof. The rubber product low-temperature vulcanization accelerator is prepared from ethylene-propylene diene monomer, ethylene-vinyl acetate copolymer, auxiliaries, 2-mercaptobenzothiazole zinc salt powder, sulfenamide accelerator powder, tetrabenzylthiuram disulfide accelerator powder and accelerator BG powder. According to the low-temperature vulcanization accelerator for the rubber product, various accelerators are combined and used according to corresponding proportions, the problems existing in the using process of a single accelerator are solved, proper processing parameters are adjusted according to the proportions, the production efficiency is improved, the production quality is improved, and the low-temperature vulcanization accelerator is environmentally friendly.

The present invention relates to the field of high polymer material processing, and discloses a rubber in-mold foaming lightweight sports shoe material and a preparation method thereof, the rubber in-mold foaming lightweight sports shoe material comprises the following raw material components by weight: 60-100 parts of a rubber base material, the rubber base material comprises butadiene rubber, styrene butadiene rubber and at least one special synthetic rubber; 30 to 40 parts of a reinforcing filler; 3-8 parts of a vulcanization system comprising sulfur and a sulfenamide accelerator; 5-12 parts of a composite foaming system which comprises an organic foaming agent, a foaming promoter and a nucleating agent; and 3-8 parts of an activation system comprising zinc oxide and fatty acid. A traditional multi-section type processing flow is replaced by an in-mold one-step foaming forming process, and plastifying, foaming, vulcanizing and shaping of a rubber compound are integrated and completed in a single mold procedure through sectional temperature control, pressure coupling regulation and a foaming-vulcanizing rate matching technology, so that the production period is greatly shortened, the energy consumption and equipment occupation are reduced, and the production cost is reduced. Meanwhile, a uniform and fine closed pore structure is formed by utilizing accurate foaming window control and nucleating agent induction effect.

The invention discloses anti-cutting low-heat engineering tire tread rubber based on a composite reinforcing system and a preparation method thereof, and relates to the technical field of tread rubber. According to the technical scheme, the rubber material is prepared from the following components in parts by weight: 0 to 40 parts of natural rubber, 60 to 100 parts of tear-resistant modified rubber NRX-N1, 10 to 20 parts of HT carbon silicon enhancer, 40 to 50 parts of carbon black, 3 to 5 parts of zinc oxide, 1 to 2 parts of stearic acid, 2 to 4 parts of anti-aging agent, 1 to 2 parts of microcrystalline wax, 1.5 to 2.5 parts of sulfur, 0.5 to 1 part of accelerant 833 and 0.5 to 1.5 parts of sulfenamide accelerant. According to the invention, the tear-resistant modified glue NRX-N1, the HT carbon silicon reinforcing agent and the specific alkaline accelerant 833 are innovatively and synergistically compounded, a unique'fiber reinforcement-nano reinforcement-vulcanization network optimization 'composite system is constructed, and a remarkable breakthrough in performance is realized.

The invention discloses a rubber accelerator 3-methylpiperidinyl dithio sulfenamide piperazine as well as a preparation method and application of the rubber accelerator 3-methylpiperidinyl dithio sulfenamide piperazine. The method comprises the following steps: dissolving anhydrous piperazine in absolute ethyl alcohol under a stirring condition, adding an aqueous solution containing sodium hydroxide, stirring at room temperature, cooling, adding carbon disulfide stored in absolute ethyl alcohol, stirring, adding a proper amount of 4-methylpiperidine into the system, standing, dropwise adding iodine and potassium iodide which are dissolved in deionized water, continuing to react after the addition is completed, filtering, washing, and drying to obtain the 4-methylpiperidine. And filtering with deionized water, drying and crushing. The accelerator 3-methylpiperidyl dithiosulfenamide piperazine prepared by the invention has the characteristics of high vulcanization rate of a dithiocarbamate accelerator and moderate scorch period of a sulfenamide accelerator, and can solve the problem of rapid vulcanization of ethylene propylene diene monomer.

Provided is a tire including a reinforcement layer (6a), (6b) composed of a reinforcing material and vulcanized rubber covering the reinforcing material, in which: the vulcanized rubber is composed of a rubber composition including N-cyclohexyl-2-benzothiazyl sulfenamide; the reinforcing material includes a steel cord surface coated with a ternary plating layer of copper, zinc, and iron; the reinforcement layer (6a), (6b) is disposed radially inside a tread surface of the tire; and a ratio (a / b) of a modulus (a) at an elongation of 50% of the vulcanized rubber covering the reinforcing material in a tire width direction central portion (6C) of the reinforcement layer (6a), (6b) to a modulus (b) at an elongation of 50% of the vulcanized rubber covering the reinforcing material in tire width direction end portions (6E) of the reinforcement layer (6a), (6b) is 0.94 to 1.06. The tire has a high modulus and excellent productivity.

The present application belongs to the technical field of conveying belt, and particularly relates to a flame-retardant heat-resistant conveying belt and a preparation method thereof. The flame-retardant heat-resistant conveying belt provided by the present application comprises a framework layer and a covering rubber layer, and the covering rubber layer comprises the following components: ethylene-propylene-diene rubber, nitrile rubber, flame-retardant resin, reinforcing agent, nano flame-retardant agent, accelerator, antioxidant and sulfur. In the present application, the flame-retardant resin is used as part of the flame-retardant agent instead of the traditional flame-retardant agent to be added into the covering rubber, so as to reduce the influence of the amount of the flame-retardant agent on the mechanical properties of the covering rubber; the bisphenol A-bis(diphenyl phosphate) modified nano aluminum hydroxide is used as the nano flame-retardant agent to be added into the covering rubber, so as to improve the compatibility of the nano aluminum hydroxide with the covering rubber and the flame-retardant heat-resistant properties of the covering rubber; and the 2-mercaptobenzothiazole and N-cyclohexyl-2-benzothiazole sulfenamide are used to form the accelerator together, so as to improve the vulcanization efficiency and improve the mechanical properties and aging resistance of the covering rubber.

The invention discloses vulcanization accelerator CBS master batch particles for low-dust rubber and a preparation method of the vulcanization accelerator CBS master batch particles, and belongs to the technical field of rubber auxiliaries. The master batch particle is prepared from N-cyclohexyl-dibenzothiazole sulfenamide, natural rubber, a core-shell structure polymer grafting type dispersing agent, a hyperbranched polymer interface reinforcing agent, zinc oxide, stearic acid, N-isopropyl-N '-phenyl p-phenylenediamine and gamma-mercaptopropyltriethoxysilane according to a specific weight part ratio. The preparation process comprises the following steps: plastifying the natural rubber to obtain the roller coating rubber; mixing the two modified dispersants with the accelerant, adding the roll-coating rubber, adding other auxiliaries for mixing, and finally performing extrusion granulation and drying to obtain a master batch particle finished product. Wherein the two key modifiers are prepared through atom transfer radical polymerization and hyperbranched polymerization grafting technologies respectively, and the dispersity and interface bonding force of the master batch particles in a rubber matrix can be remarkably improved. The high activity of the accelerant and the excellent mechanical property of a rubber product are kept.

The application discloses a preparation method of a chiral sulfimine compound and belongs to the technical fields of visible light catalysis and organic synthesis. N -[(9 R )-6'-methoxyoctanosyl]-8-quinolinesulfonamide as a chiral ligand, fluorobenzene as a solvent, under the action of a copper salt and an oxidant, under visible light irradiation at room temperature in a protective atmosphere, the copper salt, the sulfenamide compound and N -[(9 R )-6'-methoxyoctanosyl]-8-quinolinesulfonamide form a copper complex, the copper complex enters an excited state under visible light irradiation, cleaves the oxidant through an energy transfer or single electron transfer process, generates a highly active free radical, the free radical activates an inert carbon-hydrogen bond to generate an alkyl free radical and reacts with the sulfenamide in the copper complex, asymmetric sulfuration of the inert carbon-hydrogen bond is realized, and the chiral sulfimine compound is obtained.

The invention discloses a PMMA (polymethyl methacrylate) migration prevention rubber material which is prepared by mixing ethylene propylene diene monomer, zinc oxide, zinc stearate, carbon black, calcium carbonate, paraffin oil, polyethylene glycol, sulfur, benzothiazyl disulfide and N-cyclohexyl-2-benzothiazole sulfenamide. The rubber material has good physical and mechanical properties such as material strength, tensile strength, elongation and tearing strength; the invention also discloses a preparation method of the PMMA migration prevention rubber material. The rubber material prepared by the method has good physical and mechanical properties.

To provide a rubber composition and a conveyor belt which can adjust the vulcanization rate in an appropriate range while achieving both excellent abrasion resistance and flame retardancy and have excellent processability.SOLUTION: There are provided: a rubber composition comprising a diene-based rubber containing a natural rubber and a butadiene rubber, a flame retardant containing chlorinated paraffin and antimony trioxide, carbon black, sulfur and a vulcanization accelerator including a sulfenamide-based vulcanization accelerator and a guanidine-based vulcanization accelerator, wherein the content of natural rubber in the total amount of the diene-based rubber is 20 to 50 mass%, the content of the butadiene-based rubber is 50 to 80 mass%, the content of the chlorinated paraffin is 20 to 35 pts.mass based on 100 pts.mass of the diene-based rubber, the content of the antimony trioxide is 5 to 12 pts.mass, the mass ratio of (the total content of the sulfenamide-based vulcanization accelerator and the guanidine-based vulcanization accelerator) / (the content of the sulfur) is 1.00 or more and the mass ratio of (the content of the guanidine-based vulcanization accelerator) / (the content of the sulfenamide-based vulcanization accelerator) is 0.20 to 0.60; and a conveyor belt produced using the rubber composition.SELECTED DRAWING: None