32 results about "Tributyl phosphite" patented technology

The invention relates to a preparation method of an antibiotic plastic. The antibiotic plastic comprises, by weight, 100 parts of polyethylene glycol terephthalate, 0.4-0.6 parts of tributyl phosphite, 0.5-1 part of dibenzylidene sorbitol and 0.1-0.5 parts of silver-supported zirconium phosphate. The silver-supported zirconium phosphate is adopted as a bactericide, and dibenzylidene sorbitol is adopted as a nucleating agent, so polyethylene glycol terephthalate has a good antibiosis effect under high transparency.

The invention discloses a high-temperature compound corrosion inhibitor and a preparation method thereof. The high-temperature compound corrosion inhibitor comprises the following components in percentage by weight: 34-40% of tributyl phosphite, 8-15% of phosphate, 5-10% of isopropyl alcohol, 5-10% of thiourea, 1-5% of phenylamine, 4-8% of acetophenone, 0.5-3% of polysiloxane and the balance of water. According to the high-temperature compound corrosion inhibitor, tributyl phosphite and phosphate are taken as raw materials, the raw materials are synergistic, the stability of an adsorption layer is improved, and the working concentration of the corrosion inhibitor is reduced; and the high-temperature compound corrosion inhibitor prepared by the invention has better corrosion resistance under the conditions of high temperature and high pressure and has significance in reduction of loss of equipment and pipelines and increase of comprehensive economic benefit.

The invention relates to a preparation method of bottle production resin. The bottle production resin comprises, by weight, 60 parts of PET, 40 parts of PC, 0.4-0.6 parts of tributyl phosphite, 2-5 parts of polypropylene grafted maleic anhydride and 0.5-1 part of dibenzylidene sorbitol. Small amounts of tributyl phosphite and dibenzylidene sorbitol make the PET and the PC be uniformly mixed, crystals be pure and the transparency be increased.

The invention includes an improved process for producing tamsulosin comprising reacting 5-(2-aminopropyl)-2-methoxybenzenesulfonamide with 2-(o-ethoxyphenoxy)ethyl bromide in an organic phosphite solvent to obtain tamsulosin. Optically pure (R)-5-(2-aminopropyl)-2-methoxybenzenesulfonamide can be employed to produce optically pure (R)-tamsulosin product. The organic phosphite solvent utilized in the reaction can include tri-alkyl phosphites such as triethyl phosphite, trimethyl phosphite, and tributyl phosphite. Additionally, processes for producing tamsulosin having a low concentration of by-product contaminants, such as 5-((R)-2-{Bis-[2-(2-ethoxyphenoxy)ethyl]amino}-propyl)-2-methoxybenzenesulfonamide, and the use of such by-products to monitor the chemical purity of tamsulosin, are provided.

The invention relates to a phospho modified cellulose adsorbent, and a preparation method and application thereof. The technical scheme is as follows: the preparation method comprises the following steps: taking 1,3-dibromopropane and tributyl phosphite, carrying out reaction at 138-142 DEG C for 18-22 hours, and carrying out rotary evaporation at 115 DEG C under reduced pressure to obtain an intermediate product I; taking DMF (N,N-dimethylformamide), adding OCS and NaH in a nitrogen protective atmosphere, stirring in an ice water bath for 1 hour, removing the ice water bath, heating to 40-45 DEG C, reacting for 4 hours or so, adding the intermediate product I, mixing and stirring to react at room temperature for 24 hours, carrying out vacuum filtration, washing respectively with HCl and distilled water, and drying to obtain an intermediate product II; and in a nitrogen protective system, mixing the intermediate product II with ethanol, adding a KOH solution, stirring under reflux at 75 DEG C for 24-50 hours, carrying out vacuum filtration, washing respectively with HCl and distilled water to a neutral state, and drying. The adsorbent provided by the invention has high separation and enrichment efficiency, and can be used for selectively adsorbing scandium from a mixed rare earth ion solution.

The invention provides a strong-effect conductive oxidation-resistant cable and a preparation method thereof, which relate to the technical field of cable production. The cable is made of the following raw materials in parts by weight: copper 65-75 part, aluminum 15-25 part, graphene 14-16 part, carbon fiber 4-8 part, carbon black 2-4 part of zinc dialkyldithiophosphate, 25-35 part of tributyl phosphite, 8-12 part, styrene-diphenylamine 4-6 parts, O-Tert-alkyl benzotriazole 2-4 parts. The invention has the advantages of strong electric conductivity and oxidation resistance, adopts a pluralityof electric conductive fillers in the production process, so that the electric conductivity of the cable is better, the resistivity is small, and two kinds of anti-oxidation coating materials are prepared by adopting a plurality of antioxidants, so that the cable conductor is doubly protected, the cable and air contact are prevented from oxidizing and rusting, and the service life is long.

The invention relates to a bottle cap plastic master batch and a preparation method thereof. The bottle cap plastic master batch comprises, by weight, 100 parts of PET, 0.4-0.6 parts of tributyl phosphite, 0.5-1 part of dibenzylidene sorbitol, 0.1-0.5 parts of silver-supported zirconium phosphate, 1-2 parts of one of phthalocyanine red and phthalocyanine blue, and 1-2 parts of pearl essence. Compared with general bottle caps, bottle caps made of the bottle cap plastic master batch have the advantages of high coloring depth and difficult color fading.

The invention discloses a preparation method of a mixed flame retardant used for spinning. The mixed flame retardant is prepared through physical mixing at present. As cyclic phosphonate compounds generally have higher viscosity, and the lower the temperature is, the poorer the flow is, not only is the operation inconvenient to carry out during physical compounding but also the problems of poor mixing uniformity and difficulty in filtration also exist. Raw materials used in reaction include raw materials A, a raw material B and a raw material C, wherein the raw materials A are two or more of trimethylolethane, trimethylolpropane and dipentaerythritol; the raw material B is one of trimethyl phosphite, triethyl phosphite and tributyl phosphite; the raw material C is one of dimethyl methylphosphonate, trimethyl phosphate and triethyl phosphate; a mixture formed by at least two cyclic phosphonate compounds is directly obtained through reaction among the three kinds of raw materials. The preparation method has the beneficial effects that the mixed flame retardant with different components and ratios is directly prepared by controlling the ratio of the reactant raw materials and has the advantages of simple process, good mixing uniformity of the product, easiness in control of chemical components, and the like.

An antibiotic plastic comprises, by weight, 100 parts of polyethylene glycol terephthalate, 0.4-0.6 parts of tributyl phosphite, 0.5-1 part of dibenzylidene sorbitol and 0.1-0.5 parts of silver-supported zirconium phosphate. The silver-supported zirconium phosphate is adopted as a bactericide, and dibenzylidene sorbitol is adopted as a nucleating agent, so polyethylene glycol terephthalate has a good antibiosis effect under high transparency.

The invention provides an additive used for producing engine oil. The additive is composed of base oil, an antioxidant, a detergent, a dispersant, an extreme pressure additive, a rhenium-molybdenum alloy metal powdery material, polymethacrylate, a toluoyl triazole derivative and vulcanized dimeric butene, wherein the antioxidant is tri-n-butyl phosphite; the detergent is alkylsalicylate; the dispersant is polyisobutylene maleimide; and the extreme pressure antiwear agent is thioolefin. The invention has the following advantages: the preparation scheme is scientific; the manufacturing method is simple; and the prepared product has a price lower than the price of the product of a same kind in the market, has high cost performance, significantly improves and enhances antiwear and anti-extreme-pressure effects of mechanical equipment, reduces exhaust emission and noise, maximumly improves oxidation resistance of lubricating oil, has cleaning and dispersing effects, maintains good operation of the mechanical equipment for a long time, prolongs the oil changing period, and completely enhances comprehensive effects of the lubricating oil.

The invention discloses a nano-metal composite additive applied to turbine oil. The nano-metal composite additive is characterized by consisting of base oil, an antioxidant, a rusting inhibitor, a dispersant, a metal deactivator, an extreme pressure additive, a demulsification agent, metal molybdenum powder, metal rhenium powder and vitamin (E). The antioxidant is a mixture of diarylamine and tributyl phosphite; the rusting inhibitor is ethoxy phenol; the dispersant is polyisobutene maleimide; the metal deactivator is benzotriazole; the extreme pressure additive is a molybdenum salt of phosphate ester; and the demulsification agent is polyalkoxy polyol. The making method is simple, and the prepared product can effectively and comprehensively enhance various performance requirements of turbine lubricating oil. The service cycle of lubricating oil is extended, the anti-extreme pressure efficacy of lubricating oil is improved, and the oxidation tolerance, corrosion resistance, blistering resistance, oxidation resistance, oil sludge generation resistance and other efficacy of lubricating oil are comprehensively enhanced. And the comprehensive efficacy can be comprehensively improved.

A bottle-making resin, comprising the following components in parts by weight: 60 parts of PET, 40 parts of PC, 0.4-0.6 parts of tributyl phosphite, 2-5 parts of polypropylene grafted maleic anhydride, sorbitol dibenzaldehyde 0.5~1 part. The invention has the beneficial effects that: a small amount of tributyl phosphite and sorbitol benzaldehyde makes the mixing of PET and PC more uniform, the crystallization is more pure, and the transparency is increased.

The invention provides a corrosion-resistant pressure differential transmitter housing and a preparation method thereof and relates to the technical field of pressure differential transmitter production. The corrosion-resistant pressure differential transmitter housing is prepared, by weight, from the following raw materials of 55 to 65 parts of alumina, 25 to 35 parts of copper oxide, 12 to 16 parts of chromium trioxide, 16 to 20 parts of magnesium sulfate, 8 to 12 parts of chromium carbide, 8 to 12 parts of tungsten carbide, 14 to 18 parts of tributyl phosphite, 14 to 18 parts of triphenyl phosphite, 6 to 10 parts of N-benzylamine phenylenediamine, 6 to 10 parts of 2,4-diaminodiphenyl ether, 6 to 10 parts of 2-mercaptobenzothiazole , 6 to 10 parts of alkyl vinyl ester, 4 to 6 parts of coupling agents, 2 to 4 parts of toughening agents, 1 to 3 parts of dispersing agents, and 1 to 3 parts of antifoaming agents. The corrosion-resistant pressure differential transmitter housing has the advantages of overcoming the shortcomings of the prior art, effectively improving the corrosion resistance of the housing, preventing the housing from being in contact with various substances such as water for a long time and causing corrosion or even damage to thereby affect the measurement accuracy of internal components, providing high measurement accuracy and good use effect, effectively reducing the internal stress of the housing and preventing the housing from cracking, and guaranteeing superior performance and long service life.

The invention relates to a nano-metal composite additive used in turbine oil. The nano-metal composite additive is characterized by comprising: base oil; an antioxidant; a rusting inhibitor; a dispersant; a metal deactivator; an extreme pressure additive; a demulsification agent; metal molybdenum powder; metal rhenium powder; and vitamin (E). The antioxidant is a mixture of diarylamine and tributyl phosphite; the rusting inhibitor is ethoxy phenol; the dispersant is a Mannich base ashless dispersant; the metal deactivator is benzotriazole; the extreme pressure additive is a molybdenum salt of phosphate ester; and the demulsification agent is polyalkoxy polyol. The making method is simple, and the prepared product can effectively and comprehensively enhance various performance requirements of turbine lubricating oil. The service cycle of lubricating oil is extended, the anti-extreme pressure efficacy of lubricating oil is improved, and the oxidation tolerance, corrosion resistance, blistering resistance, oxidation resistance, oil sludge generation resistance and other efficacy of lubricating oil are comprehensively enhanced. And the comprehensive efficacy can be comprehensively improved.

The invention relates to a capacitor working electrolyte used for 8000V lightning stroke resistance, and a preparation method thereof. The capacitor working electrolyte comprises the following ingredients in parts by weight: 65-75 parts of ethylene glycol, 15-23 parts of iso-ammonium sebate, 2-2.5 parts of ammonium pentaborate, 2-2.5 parts of 1-6DDA (1-6 Ammonium dodecanedioate), 0.5-1 part of m-dinitrobenzene, 0.3-0.6 part of PVA(polyvinyl alcohol)-1179 and 0.1-0.2 part of tributyl hypophosphite. The preparation method comprises the following steps that: (1) firstly, mixing the ethylene glycol, the ammonium pentaborate, the iso-ammonium sebate and the 1-DDA, heating to 135DEG C, keeping the temperature for 25 minutes, and continuously stirring; (2) then, adding the tributyl hypophosphite,heating to 145DEG C, keeping the temperature for 10min, cooling to 70DEG C, and keeping for 210 minutes; and (3) finally, adding the PVA-1179 and the m-dinitrobenzene, heating to 85DEG C, and naturally cooling. The capacitor working electrolyte has the advantages of good electrochemical performance and high lightning stroke resistance.

The invention discloses a nano-metal composite agent applied to turbine oil. The nano-metal composite agent consists of base oil, an antioxidant, a rusting inhibitor, a dispersant, a metal deactivator, an extreme pressure additive, a demulsification agent, metal molybdenum powder, and metal rhenium powder. The antioxidant is a mixture of diarylamine and tributyl phosphite; the rusting inhibitor is ethoxy phenol; the dispersant is multiamides; the metal deactivator is benzotriazole; the extreme pressure additive is a molybdenum salt of phosphate ester; and the demulsification agent is polyalkoxy polyol. The making method is simple, and the prepared product can effectively and comprehensively enhance various performance requirements of turbine lubricating oil. The service cycle of lubricating oil is extended, the anti-extreme pressure efficacy of lubricating oil is improved, and the oxidation tolerance, corrosion resistance, blistering resistance, oxidation resistance, oil sludge generation resistance and other efficacy of lubricating oil are comprehensively enhanced. And the comprehensive efficacy can be comprehensively improved.

A tungsten molybdenum alloy anti-wear additive used in engine lubricating oil comprises base oil; tungsten molybdenum alloy; an antioxidant; a detergent; a dispersant; a metal passivator; an extreme pressure additive; and lecithin. The antioxidant is tributyl phosphite, the detergent is borate, the dispersant is succinate, the metal passivator is benzotriazole, and the extreme pressure additive is alkyl phosphorus containing acid ester and salt. The tungsten molybdenum alloy anti-wear additive is simple in manufacturing method, and can fully meet the requirements of environmental protection, the product use cycle is longer, lubricating oil antiwear and anti extreme pressure effects are improved, oxidation resistance, corrosion resistance, foaming resistance and other various effects of the lubricating oil can be improved, the detergency effect of the lubricating oil can be kept for a long time, and the comprehensive effects of engine lubricating oil can be fully enhanced.

The invention discloses a nano-metal composite additive applied to turbine oil. The nano-metal composite additive consists of base oil, an antioxidant, a rusting inhibitor, a dispersant, a metal deactivator, an extreme pressure additive, a demulsification agent, metal molybdenum powder, metal rhenium powder and vitamin (E). The antioxidant is a mixture of diarylamine and tributyl phosphite; the rusting inhibitor is ethoxy phenol; the dispersant is a Mannich base ashless dispersant; the metal deactivator is benzotriazole; the extreme pressure additive is a molybdenum salt of phosphate ester; and the demulsification agent is polyalkoxy polyol. The making method is simple, and the prepared product can effectively and comprehensively enhance various performance requirements of turbine lubricating oil. The service cycle of lubricating oil is extended, the anti-extreme pressure efficacy of lubricating oil is improved, and the oxidation tolerance, corrosion resistance, blistering resistance, oxidation resistance, oil sludge generation resistance and other efficacy of lubricating oil are comprehensively enhanced. And the comprehensive efficacy can be comprehensively improved.

The invention discloses a nano-metal composite additive applied to turbine oil. The nano-metal composite additive consists of base oil, an antioxidant, a rusting inhibitor, a dispersant, a metal deactivator, an extreme pressure additive, a demulsification agent, metal molybdenum powder, and metal rhenium powder. The antioxidant is a mixture of diarylamine and tributyl phosphite; the rusting inhibitor is ethoxy phenol; the dispersant is succinic ester; the metal deactivator is benzotriazole; the extreme pressure additive is a molybdenum salt of phosphate ester; and the demulsification agent is polyalkoxy polyol. The making method is simple, and the prepared product can effectively and comprehensively enhance various performance requirements of turbine lubricating oil. The service cycle of lubricating oil is extended, the anti-extreme pressure efficacy of lubricating oil is improved, and the oxidation tolerance, corrosion resistance, blistering resistance, oxidation resistance, oil sludge generation resistance and other efficacy of lubricating oil are comprehensively enhanced. And the comprehensive efficacy can be comprehensively improved.

The invention relates to a phospho modified cellulose adsorbent, and a preparation method and application thereof. The technical scheme is as follows: the preparation method comprises the following steps: taking 1,3-dibromopropane and tributyl phosphite, carrying out reaction at 138-142 DEG C for 18-22 hours, and carrying out rotary evaporation at 115 DEG C under reduced pressure to obtain an intermediate product I; taking DMF (N,N-dimethylformamide), adding OCS and NaH in a nitrogen protective atmosphere, stirring in an ice water bath for 1 hour, removing the ice water bath, heating to 40-45 DEG C, reacting for 4 hours or so, adding the intermediate product I, mixing and stirring to react at room temperature for 24 hours, carrying out vacuum filtration, washing respectively with HCl and distilled water, and drying to obtain an intermediate product II; and in a nitrogen protective system, mixing the intermediate product II with ethanol, adding a KOH solution, stirring under reflux at 75 DEG C for 24-50 hours, carrying out vacuum filtration, washing respectively with HCl and distilled water to a neutral state, and drying. The adsorbent provided by the invention has high separation and enrichment efficiency, and can be used for selectively adsorbing scandium from a mixed rare earth ion solution.

The invention discloses a nano-metal composite agent applied to turbine oil. The nano-metal composite agent consists of base oil, an antioxidant, a rusting inhibitor, a dispersant, a metal deactivator, an extreme pressure additive, a demulsification agent, metal molybdenum powder, metal rhenium powder and vitamin (E). The antioxidant is a mixture of diarylamine and tributyl phosphite; the rusting inhibitor is ethoxy phenol; the dispersant is ash-free phosphate ester; the metal deactivator is benzotriazole; the extreme pressure additive is a molybdenum salt of phosphate ester; and the demulsification agent is polyalkoxy polyol. The making method is simple, and the prepared product can effectively and comprehensively enhance various performance requirements of turbine lubricating oil. The service cycle of lubricating oil is extended, the anti-extreme pressure efficacy of lubricating oil is improved, and the oxidation tolerance, corrosion resistance, blistering resistance, oxidation resistance, oil sludge generation resistance and other efficacy of lubricating oil are comprehensively enhanced. And the comprehensive efficacy can be comprehensively improved.

The invention relates to a turbine oil nano-metal composite additive, which is characterized by comprising: base oil; an antioxidant; a rusting inhibitor; a dispersant; a metal deactivator; an extreme pressure additive; a demulsification agent; metal molybdenum powder; metal rhenium powder; and vitamin (E). The antioxidant is a mixture of diarylamine and tributyl phosphite; the rusting inhibitor is ethoxy phenol; the dispersant is succinate; the metal deactivator is benzotriazole; the extreme pressure additive is a molybdenum salt of phosphate ester; and the demulsification agent is polyalkoxy polyol. The making method is simple, and the prepared product can effectively and comprehensively enhance various performance requirements of turbine lubricating oil. The service cycle of lubricating oil is extended, the anti-extreme pressure efficacy of lubricating oil is improved, and the oxidation tolerance, corrosion resistance, blistering resistance, oxidation resistance, oil sludge generation resistance and other efficacy of lubricating oil are comprehensively enhanced. And the comprehensive efficacy can be comprehensively improved.

The invention discloses a novel rubber protective floor mat and a preparation method thereof, and the rubber protective floor mat comprises the following raw materials in parts: 40-60 parts of natural rubber, 30-70 parts of butadiene styrene rubber, 4-7 parts of white carbon black, 2-8 parts of an antioxidant, 1-5 parts of an anti-aging agent, 2-8 parts of a flexibilizer, 2-10 parts of a softening agent, 4-8 parts of a foaming agent and 1-4 parts of a coloring agent. The antioxidant is prepared by mixing tributyl phosphite, triphenyl phosphite and acidic dodecyl phosphite according to a ratio of (1-3):(1-5):(2-6), the anti-aging agent is specifically an anti-aging agent 4010NA, the toughening agent is prepared by mixing a styrol copolymer and styrene according to a ratio of (1-3):(4-8), the softening agent is prepared by mixing vegetable oil and fatty acid according to a ratio of (4-6):(5-10), and the foaming agent is prepared by mixing azodiisobutyronitrile and benzsulfophthalide boron in ratio of (1-4):(5-9). According to the present invention, various additives are reasonably prepared on the basis of the prior art, such that the produced rubber protection floor mat has high softness, and can effectively protect the fallen user.

The invention discloses a composite additive for turbine oil. The composite additive comprises base oil, an anti-oxidant, a rusting inhibitor, a foam inhibitor, a metal deactivator, an extreme pressure additive, a demulsification agent, copper oxide powder and magnesium metal powder. The anti-oxidant is a mixture of diarylamine and tributyl phosphate. The rusting inhibitor is an alkylsuccinic acid derivative. The foam inhibitor is polyacrylate. The metal deactivator is triazole. The extreme pressure additive comprises alkyl phosphate ester and salt. The demulsification agent is polyalkoxyphenol. The composite additive is prepared by the simple processes, has high quality, effectively and comprehensively improves performances of the turbine oil, prolongs a use period of the turbine oil, improves turbine oil extreme pressure resistance, comprehensively improves oxidation resistance, corrosion resistance, foam resistance and oily sludge resistance of the turbine oil, is biodegradable and completely satisfies environmental requirements on the same type of the existing products.

The invention relates to a nano-metal composite agent added in turbine oil. The nano-metal composite agent is composed of base oil, an antioxidant, a rusting inhibitor, a dispersant, a metal deactivating agent, an extreme pressure additive, a demulsification agent, metal molybdenum powder, metal rhenium powder, and vitamin (E). The antioxidant is a mixture of diarylamine and tributyl phosphate. The rusting inhibitor is ethoxy phenol; the dispersant is polyacrylic ester; the metal deactivating agent is benzotriazole; the extreme pressure additive is a molybdenum salt of phosphate; and the demulsification agent is polyalkoxy polyol. The making method is simple, and the prepared product can effectively and comprehensively enhance various performance requirements of turbine lubricating oil. The service cycle of lubricating oil is extended, the anti-extreme pressure efficacy of lubricating oil is improved, the oxidation tolerance, corrosion resistance, blistering resistance, oxidation resistance, oil sludge generation resistance and other efficacy of lubricating oil are comprehensively enhanced. And the comprehensive efficacy can be comprehensively improved.

The invention relates to an ultrahigh-voltage flame-retardant electrolyte which comprises the following components in parts by weight: 65-75 parts of ethylene glycol, 5-10 parts of diethylene glycol,1-3 parts of nanoscale silicon dioxide, 2-3 parts of ammonium dodecanedioate, 3-5 parts of ammonium isosebacate, 3-8 parts of ammonium pentaborate, 3-5 parts of PVA-1179, 1-2 parts of o-nitroanisole and and 0.15-0.20 part of tributyl hypophosphite. The preparation method comprises the following steps: (1) firstly, mixing the ethylene glycol, the diethylene glycol, the ammonium pentaborate, the ammonium isodecanedioate and the PVA-1179, heating to 60-75 DEG C, keeping the temperature for 25 minutes and continuously stirring; (2) adding the ammonium dodecanedioate, heating to 145 DEG C, keepingthe temperature for 10 minutes, cooling to 70 DEG C, and keeping the temperature for 210 minutes; and (3) finally adding nanoscale silicon dioxide, uniformly stirring until the solution is transparent, preserving heat for 60 minutes, naturally cooling to 75 DEG C, adding o-nitroanisole and tributyl hypophosphite, and naturally cooling to normal temperature to obtain the electrolyte. The electrolyte is resistant to high temperature and high pressure, the amount of hydrogen generated in the working process of the electrolytic capacitor can be reduced, the electrolyte vapor pressure is reduced, and the flame-retardant effect is good.

The invention discloses a high temperature resistant high-low cabinet and a preparation method thereof. The preparation method comprises the following steps: 1) a procedure of calcining medical stone, graphite, sago cycas and shell to prepare a calcined product; 2) a procedure of putting the calcined product into an acid liquor for soaking to prepare an activator; 3) a procedure of mixing styrene-acrylate emulsion, polyvinyl alcohol, propylene glycol, methylcellulose, lithium titanate, tributyl phosphite, melamine, graphene, sodium silicate, adenosine diphosphate with the activator to prepare a high temperature resistant coating; and 4) a procedure of coating the surface of the high-low cabinet with the high temperature resistant coating to form the coating layer so as to produce the high temperature resistant high-low cabinet. The high-low cabinet produced according to the method has excellent high temperature resistant performance.

Provided is a chloroprene rubber superior in the effectiveness of preventing mold staining.The chloroprene rubber contains at least one compound selected from phosphite ester compounds (such as tris(nonylphenyl)phosphite ester and tributyl phosphite ester) and phosphate ester compounds (such as tri(nonylphenyl)phosphate ester and tributyl phosphate ester) in a total amount of 0.1 to 5.0 mass % and additionally at least one compound selected from sulfonic acid compounds (such as benzenesulfonic acid and dodecylbenzenesulfonic acid) and fatty acid compounds in a total amount of 0.1 to 3.0 mass %.