Rubber compositions, coatings and adhesives

Abstract

Provided is a rubber composition capable of producing a coating material and an adhesive having excellent drying properties. More specifically, this rubber composition contains a diene-based rubber and a metallic soap. The metallic soap is at least one type selected from the group consisting of a metal salt of a fatty acid having 1-22 carbon atoms, a metal complex of a metal salt of a fatty acid having 1-22 carbon atoms and a nitrogen atom-containing ligand compound, and an aluminum chelate compound. The metal in said metal salt of a fatty acid is cobalt, manganese, iron, bismuth, zirconium, barium, calcium, strontium, nickel, copper, zinc, a rare earth metal or vanadium.

Description

[Technical field]

[0001] The present invention relates to a rubber composition, a coating and an adhesive. [Background technology]

[0002] In the tire manufacturing process, the unvulcanized tread before it is attached to the tire body has its surface marked with its specifications, etc. An operator checks the markings, wraps the unvulcanized tread around the tire body, places it in a molding die, and then heats it to integrate the tread with the tire body through a vulcanization reaction to manufacture the tire.

[0003] For the marking, for example, paints in which pigments have been added to latex are used. Latex is an emulsion in which rubber is dispersed in the form of fine particles in water or an aqueous solution, and paints containing this latex are paints that have the flexibility to produce coating films that can follow the expansion and contraction of rubber (Patent Document 1). The flexibility of the latex makes it also used as an adhesive (Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2004-231713 A [Patent Document 2] Patent Publication No. 2022-12608 Summary of the Invention [Problem to be solved by the invention]

[0005] Both paints and adhesives containing latex have the problem of not drying sufficiently. For example, in the case of paints used for marking during the tire manufacturing process, there is a problem that the markings transfer to other tires when they come into contact with each other during the manufacturing process.

[0006] An object of the present invention is to provide a rubber composition which can be used to produce coating materials and adhesives having excellent drying properties. The problem to be solved by the present invention is to provide a paint and adhesive that have excellent drying properties. [Means for solving the problem]

[0007] As a result of extensive investigations aimed at solving the above problems, the present inventors have found that the drying performance of a rubber composition can be improved by adding a specific metal soap, and have thus completed the present invention.

[0008] That is, the present invention relates to a rubber composition containing a diene rubber and a metal soap, wherein the metal soap is at least one selected from the group consisting of a fatty acid metal salt of a fatty acid having 1 to 22 carbon atoms, a metal complex of a fatty acid metal salt of a fatty acid having 1 to 22 carbon atoms and a nitrogen atom-containing ligand compound, and an aluminum chelate compound, and the metal of the fatty acid metal salt is cobalt, manganese, iron, bismuth, zirconium, barium, calcium, strontium, nickel, copper, zinc, rare earth or vanadium. Effect of the Invention

[0009] The present invention provides a rubber composition that can be used to produce coating materials and adhesives with excellent drying properties. The present invention can provide a coating material and an adhesive that have excellent drying properties. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] An embodiment of the present invention will be described below. The present invention is not limited to the following embodiment, and can be implemented by making appropriate modifications within the scope that does not impair the effects of the present invention.

[0011] [Rubber composition] The rubber composition of the present invention contains a diene rubber and a metal soap, and the inclusion of the metal soap can enhance drying properties. Each component will be described below.

[0012] (Metal soap) The metal soap contained in the rubber composition of the present invention is at least one selected from the group consisting of a fatty acid metal salt of a fatty acid having 1 to 22 carbon atoms, a metal complex of a fatty acid metal salt of a fatty acid having 1 to 22 carbon atoms and a nitrogen atom-containing ligand compound, and an aluminum chelate compound.

[0013] (Fatty acid metal salts) In the fatty acid metal salt of a fatty acid having 1 to 22 carbon atoms, the metal of the fatty acid metal salt is cobalt, manganese, iron, bismuth, zirconium, barium, calcium, strontium, nickel, copper, zinc, rare earth, or vanadium, and from the viewpoint of being free from concerns about toxicity, etc., is preferably manganese, iron, bismuth, zirconium, barium, calcium, strontium, copper, zinc, rare earth, or vanadium.

[0014] In the present invention, rare earth refers to one or more elements selected from scandium (Sc), yttrium (Y), lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and lutetium (Lu).

[0015] The fatty acid metal salt, which is a metal soap, is preferably a metal salt represented by the following general formula (A).

[0016] [ka] (In the general formula (A), R 1 is a hydrogen atom or an alkyl group having 1 to 21 carbon atoms, n is an integer ranging from 1 to 4; M is manganese, iron, bismuth, zirconium, barium, calcium, strontium, copper, zinc, rare earth, or vanadium.

[0017] In the general formula (A), when n is an integer of 2 or more, a plurality of R 1 may be the same as or different from each other.

[0018] R 1 The alkyl group having 1 to 21 carbon atoms may be a straight-chain alkyl group, a branched alkyl group, or may contain an alicyclic structure.

[0019] R 1 The alkyl group having 1 to 21 carbon atoms is R 1 It corresponds to a carboxylic acid residue obtained by removing a carboxyl group (COOH) from a carboxylic acid having 1 to 22 carbon atoms, represented by COOH. Examples of the carboxylic acid residue include acetic acid residue, propionic acid residue, butanoic acid residue, pentanoic acid residue, acrylic acid residue, methacrylic acid residue, octylic acid residue (2-ethylhexanoic acid residue), neodecanoic acid residue, naphthenic acid residue, isononanoic acid residue, tung oil acid residue, tall oil fatty acid residue, coconut oil fatty acid residue, soybean oil fatty acid residue, linseed oil fatty acid residue, safflower oil fatty acid residue, dehydrated castor oil fatty acid residue, tung oil fatty acid residue, lauric acid residue, myristic acid residue, palmitic acid residue, stearic acid residue, isostearic acid residue, and oleic acid residue.

[0020] R 1 The alkyl group having 1 to 21 carbon atoms is preferably an alkyl group having 1 to 15 carbon atoms, more preferably an alkyl group having 1 to 11 carbon atoms, and further preferably an acetic acid residue, a propionic acid residue, a butanoic acid residue, a pentanoic acid residue, a 2-ethylhexanoic acid residue, an isononanoic acid residue, a neodecanoic acid residue, or a naphthenic acid residue.

[0021] n is a number corresponding to the ionic valence of the metal atom of M. For example, if M is cobalt, n is 2.

[0022] When a fatty acid metal salt is used as the metal soap, one type of fatty acid metal salt may be used alone, or two or more types of fatty acid metal salts having mutually different structures may be used.

[0023] The fatty acid metal salt, which is a metal soap, can be produced by a known method, and a commercially available product may be used. Commercially available metallic soaps, which are fatty acid metal salts, include, for example, the OCTOATE series (manufactured by DIC Corporation).

[0024] (Metal Complexes) The metal complex of a nitrogen-containing ligand compound and a fatty acid metal salt of a fatty acid having 1 to 22 carbon atoms, which is a metal soap, is a compound in which a nitrogen-containing ligand compound is coordinated to the above-mentioned fatty acid metal salt. By further coordinating a nitrogen atom-containing ligand compound to the fatty acid metal salt, the stability of the metal soap can be improved and the generation of lumps during preparation of the rubber composition can be suppressed.

[0025] The nitrogen atom-containing ligand compound is preferably at least one selected from the group consisting of a compound represented by the following general formula (1), a compound represented by the following general formula (2), a compound represented by the following general formula (3), and a compound represented by the following general formula (4). [ka] (In the general formulas (1), (2), (3) and (4), R 11 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, R 12 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, X 11 is an alkylene group having 1 to 6 carbon atoms, X 12 is an alkylene group having 1 to 6 carbon atoms, Y is an ether bond or -N(R 13 A linking group represented by - (R 13 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; R21 represents a hydroxyl group, an amino group, a nitro group, a nitroso group, a sulfo group, a halogen atom, a hydrocarbon group which may have a substituent, a hydrocarbonoxy group which may have a substituent, or a hydrocarbonoxycarbonyl group which may have a substituent, p is an integer ranging from 0 to 6; R 22 is a hydrogen atom or an aliphatic hydrocarbon group, X 21 is a hydrogen atom, -R 21 or a group represented by -COOR 21 It is a group represented by the formula: R 31 represents a hydroxyl group, an amino group, a nitro group, a nitroso group, a sulfo group, a halogen atom, a hydrocarbon group which may have a substituent, a hydrocarbonoxy group which may have a substituent, or a hydrocarbonoxycarbonyl group which may have a substituent, R 32 is a hydrogen atom or an aliphatic hydrocarbon group, q is an integer ranging from 0 to 6; R 41 represents a hydroxyl group, an amino group, a nitro group, a nitroso group, a sulfo group, a halogen atom, a hydrocarbon group which may have a substituent, a hydrocarbonoxy group which may have a substituent, or a hydrocarbonoxycarbonyl group which may have a substituent, r is an integer ranging from 0 to 6.

[0026] R 11 , R 12 and R 13 The alkyl group having 1 to 6 carbon atoms may be a straight-chain alkyl group, a branched alkyl group, or may contain an alicyclic structure.

[0027] X 11 and X 12 The alkylene group having 1 to 6 carbon atoms is preferably an alkylene group having 2 to 3 carbon atoms.

[0028] R 21 , R 31 and R 41 The halogen atom is, for example, a fluorine atom, a chlorine atom, a bromine atom or an iodine atom.

[0029] R 21 , R 31 and R 41 The hydrocarbon group of the above, the hydrocarbonoxy group and the hydrocarbonoxycarbonyl group may be any of an aliphatic hydrocarbon group, an alicyclic structure-containing hydrocarbon group and an aromatic ring-containing hydrocarbon group. The aliphatic hydrocarbon group may have a straight-chain or branched structure and may have an unsaturated group in the structure.

[0030] R 21 , R 31 and R 41 When the hydrocarbon group, the hydrocarbonoxy group and the hydrocarbonoxycarbonyl group have a substituent, examples of the substituent include a hydroxyl group, an amino group, a nitro group, a nitroso group, a sulfo group, a halogen atom, an alkyl group, an alkoxy group and the like.

[0031] The aliphatic hydrocarbon group in the general formulae (2), (3) and (4) is, for example, an alkyl group having 1 to 6 carbon atoms.

[0032] Specific examples of nitrogen atom-containing ligand compounds include picolinic acid, N-methylmorpholine, pyridine, 1,8-diazabicyclo[5.4.0]undecene-7 (DBU), 1,5-diazabicyclo[4.3.0]nonene-5 (DBN), 1,4-diazabicyclo[2.2.2]octane (DABCO), 4-dimethylaminoamine (DMAP), dicyandiamide (DICY), tri-n-butylamine, dimethylbenzylamine, butylamine, 1,2-propanediamine, 1,2-cyclohexanediamine, octylamine, monoethanolamine, diethanolamine, triethanolamine, 2-[[(2-dimethylamino)ethyl]methylamino]ethanol, 2,2'-[propane-1,2-diylbis(azanylylidenemethanylylidene)]diphenol, imidazole, 1-methyl imidazole, 2-methylimidazole, 4-methylimidazole, 2,4-dimethylimidazole, 1,4-diethylimidazole, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-(N-phenyl)aminopropyltrimethoxysilane, 3-(2-aminoethyl)aminopropyltrimethoxysilane, 3-(2-aminoethyl)aminopropylmethyldimethoxysilane, tetramethylammonium hydroxide, 8-quinolinol, 5-chloro-8-quinolinol, 2,2'-bipyridyl and its derivatives, 2,2'-[propane-1,2-diylbis(azanylylidenemethanylylidene)]diphenol and its derivatives, 2,2'-methylenebis[6-(2h-benzotriazol-2-yl)-4-tert-octylphenol], and the like. These nitrogen atom-containing ligand compounds may be used alone or in combination of two or more.

[0033] The nitrogen atom-containing ligand compound is preferably one or more selected from picolinic acid, 2-[[(2-dimethylamino)ethyl]methylamino]ethanol, 1,2-propanediamine, 1,2-cyclohexanediamine, monoethanolamine, diethanolamine, triethanolamine, imidazole, 1-methylimidazole, 2-methylimidazole, 4-methylimidazole, 2,4-dimethylimidazole, 1,4-diethylimidazole, 8-quinolinol, 5-chloro-8-quinolinol, 2,2'-bipyridyl and its derivatives, and 2,2'-[propane-1,2-diylbis(azanylilidenemethanylilidene)]diphenol and its derivatives.

[0034] The amount of the nitrogen atom-containing ligand compound is, for example, in the range of 0.1 to 20 mol, preferably in the range of 0.2 to 15 mol, more preferably in the range of 0.5 to 12 mol, and even more preferably in the range of 0.5 to 10 mol, per 1 mol of the metal atom of the fatty acid metal salt.

[0035] The nitrogen-containing ligand compound can be produced by a known method, or a commercially available product may be used. Commercially available amine ligand metal complex compounds include, for example, the DICNATE series (manufactured by DIC Corporation).

[0036] (Aluminum chelate compounds) The aluminum chelate compound which is a metal soap is preferably at least one selected from the compounds represented by the following general formula (5-1) and the compounds represented by the following general formula (5-2).

[0037] [ka] (In the general formulas (5-1) and (5-2), R 511 ~R 516 and R 521 ~R 526 are each independently an alkyl group having 1 to 22 carbon atoms or an alkoxy group having 1 to 22 carbon atoms.

[0038] R 511 ~R 516 and R 521 ~R 526 The alkylene group portion of the alkyl group having 1 to 22 carbon atoms and the alkoxy group having 1 to 22 carbon atoms may be linear or branched, or may contain an alicyclic structure. 511 ~R 516 and R 521 ~R 526 The alkyl group and the alkylene group portion of the alkoxy group preferably have 1 to 9 carbon atoms.

[0039] R 511 ~R 516 and R 521 ~R 526 The alkyl group having 1 to 22 carbon atoms is preferably a methyl group or an ethyl group.

[0040] R 511 ~R 516 and R 521 ~R 526 The alkoxy group having 1 to 22 carbon atoms is preferably a methoxy group, an ethoxy group, or an oleyloxy group.

[0041] Specific examples of aluminum chelate compounds include aluminum tris(acetylacetonate), aluminum tris(ethylacetoacetate), aluminum monoacetylacetonate bis(ethylacetoacetate), aluminum monoacetylacetonate bisoleylacetoacetate, ethylacetoacetate aluminum diisopropylate, and alkylacetoacetate aluminum diisopropylate.

[0042] When an aluminum chelate compound is used as the metal soap, one type of aluminum chelate compound may be used alone, or two or more types of aluminum chelate compounds having mutually different structures may be used.

[0043] The aluminum chelate compound, which is a metal soap, can be produced by a known method, and a commercially available product, such as DICNATE AL-500 (manufactured by DIC Corporation), may be used.

[0044] The metal soap contained in the rubber composition of the present invention can be divided into two types: a main metal soap (main drier) and an auxiliary metal soap (auxiliary drier). When two or more kinds of metal soaps are used, it is preferable that the main dryer uses manganese soap and / or iron soap, and the auxiliary dryer uses a metal soap other than manganese soap and iron soap.

[0045] When an auxiliary dryer is used, the amount of the auxiliary dryer is, for example, 100 to 2,000 parts by mass relative to 100 parts by mass of the main dryer. The amount of the auxiliary dryer is, for example, in the range of 1 to 60 mol, and preferably in the range of 5 to 50 mol, per mol of metal atoms in the main dryer.

[0046] The content of the metal soap in the rubber composition of the present invention is, for example, 0.01 to 15 parts by mass, preferably 0.01 to 10 parts by mass, more preferably 0.05 to 5 parts by mass, and even more preferably 0.05 part by mass or more but less than 1 part by mass, per 100 parts by mass of diene rubber.

[0047] The metal soap contained in the rubber composition of the present invention may be of one type alone or in combination of two or more types.

[0048] (Diene rubber) Examples of diene rubbers include natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrene-butadiene rubber (SBR), styrene-isoprene copolymer rubber, butadiene-isoprene copolymer rubber, styrene-isoprene-butadiene copolymer rubber, and modified rubbers in which the ends or part of the main chain of these rubbers have been modified.

[0049] The diene rubber contained in the rubber composition of the present invention may be of one type alone or in combination of two or more types.

[0050] The diene rubber can be produced by a known method, and a commercially available product may be used. Commercially available diene rubbers include HPR350 (manufactured by JSR Corporation).

[0051] [paint] The rubber composition of the present invention can be made into a paint by further adding a pigment, and can be suitably used, for example, as a rubber paint used for marking rubber materials. The above rubber material may be either unvulcanized or vulcanized rubber, and the coating film of the rubber paint of the present invention can follow the expansion and contraction of the rubber material and has excellent drying properties, so it can also prevent paint transfer (color transfer).

[0052] The pigment contained in the coating material of the present invention may be either an organic pigment or an inorganic pigment.

[0053] Examples of organic pigments that can be used include organic pigments for printing inks listed in "Organic Pigment Handbook" (author: Hashimoto Isao, publisher: Color Office, first edition 2006). Examples of organic pigments that can be used include soluble azo pigments, insoluble azo pigments, condensed azo pigments, metal phthalocyanine pigments, metal-free phthalocyanine pigments, quinacridone pigments, perylene pigments, perinone pigments, isoindolinone pigments, isoindoline pigments, dioxazine pigments, thioindigo pigments, anthraquinone pigments, quinophthalone pigments, metal complex pigments, diketopyrrolopyrrole pigments, carbon black pigments, and other polycyclic pigments.

[0054] Examples of inorganic pigments include inorganic coloring pigments such as titanium oxide, graphite, zinc oxide, and barium sulfate, as well as inorganic body pigments such as lime carbonate powder, precipitated calcium carbonate, gypsum, clay (China clay), silica powder, diatomaceous earth, talc, kaolin, alumina white, barium sulfate, aluminum stearate, magnesium carbonate, barite powder, and abrasive powder, silicone, and glass beads.

[0055] When the coating composition of the present invention is used as a coating composition for rubber, the pigment is preferably an inorganic color pigment such as titanium oxide, zinc oxide, barium sulfate, or the like.

[0056] The pigments used may be one type alone or two or more types in combination.

[0057] The pigment content in the coating material of the present invention is, for example, in the range of 50 to 900 parts by mass, preferably 100 to 500 parts by mass, and more preferably 100 to 300 parts by mass, per 100 parts by mass of diene rubber.

[0058] The coating material of the present invention is usually used in a state where the diene rubber, metal soap and pigment are diluted with a diluent. The diluent may be any known one, and examples of the diluent include hydrocarbon solvents such as toluene, xylene, heptane, hexane, methylcyclohexane, cyclohexane, ethylcyclohexane, cyclopentane, methylcyclopentane, cycloheptane, and mineral spirits; methanol, ethanol, propanol, cyclohexanol, 1-methoxy-2-propanol, propylene glycol, 1,4-butylene glycol, 1,3-butylene glycol, glycerin, diethylene glycol, ethylene glycol, dipropylene glycol, 2-methyl-1,3-pentanediol, 3-methyl-1,5- Examples of suitable solvents include alcohol-based solvents such as pentanediol and benzyl alcohol; ketone-based solvents such as methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; ether-based solvents such as propyl ether, methyl cellosolve, cellosolve, butyl cellosolve, methyl carbitol, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, 1,3-dioxolane, 1,4-dioxolane and tetrahydrofuran; fatty acid esters such as methyl caproate, methyl caprate and methyl laurate; and vegetable oils and fats such as soybean oil, linseed oil, rapeseed oil and safflower oil.

[0059] The diluent used may be one type alone or two or more types may be used in combination. When the coating material of the present invention is used as a coating material for rubber, the diluent is preferably a mixed solvent of a hydrocarbon solvent and an ether solvent.

[0060] When the coating material of the present invention is used as a coating material for rubber, it is preferable to adjust the amount of diluent so that the content of diene rubber after dilution is in the range of 1 to 5 mass % and the content of pigment after dilution is in the range of 3 to 10 mass %.

[0061] When the coating material of the present invention is used as a coating material for rubber, the coating material for rubber may further contain additives such as a tackifier and a surface conditioner (surfactant). Examples of the tackifier include petroleum resin, hydrogenated petroleum resin, rosin ester, hydrogenated rosin ester, etc., and examples of the surface conditioner include silicone oil, etc.

[0062] The rubber coating material of the present invention may contain diene rubber, metal soap, pigment, optional diluent, optional tackifier, and optional surface conditioner, and may essentially consist of these components. Here, "essentially consist" means that the total proportion of the metal soap, pigment, optional diluent, optional tackifier, and optional surface conditioner in the rubber coating material of the present invention is, for example, 80 mass % or more, 90 mass % or more, or 95 mass % or more. The upper limit of the total mass of the diene rubber, metal soap, pigment, optional diluent, optional tackifier and optional surface conditioner is not particularly limited, but is, for example, 100 mass %. The rubber coating material of the present invention may contain other components within the range that does not impair the effect of the present invention.

[0063] [glue] The rubber composition of the present invention can also be suitably used as an adhesive (hereinafter, the adhesive of the rubber composition of the present invention may be referred to as the "adhesive of the present invention").

[0064] In the adhesive of the present invention, the upper limit of the diene rubber content is, for example, 90% by mass or less, preferably 80% by mass or less, of the solid content of the adhesive, and the lower limit of the diene rubber content is, for example, 20% by mass or more, preferably 30% by mass or more, of the solid content of the adhesive. The solids concentration of the diene rubber is determined in accordance with the method described in JIS K6387-2.

[0065] The adhesive of the present invention may contain a vulcanization accelerator, such as a sulfenamide-based vulcanization accelerator, a guanidine-based vulcanization accelerator, a thiazole-based vulcanization accelerator, a thiuram-based vulcanization accelerator, a thiourea-based vulcanization accelerator, a dithiocarbamate-based vulcanization accelerator, a morpholine-based vulcanization accelerator, an aldehyde-amine-based vulcanization accelerator, an aldehyde-ammonia-based vulcanization accelerator, an imidazoline-based vulcanization accelerator, or a xanthate-based vulcanization accelerator.

[0066] When the adhesive of the present invention contains a vulcanization accelerator, the content of the vulcanization accelerator is, for example, in the range of 0.01 to 5.0% by mass of the solid content of the adhesive.

[0067] The adhesive of the present invention may contain an inorganic filler, such as silica, carbon black, calcium carbonate, calcium hydroxide, magnesium hydroxide, talc, mica, diatomaceous earth, titanium oxide, zinc oxide, bismuth oxide, barium sulfate, magnesium carbonate, and alumina.

[0068] When the adhesive of the present invention contains an inorganic filler, the content of the inorganic filler is, for example, in the range of 0.1 to 40 mass % of the solid content of the adhesive.

[0069] The adhesive of the present invention may contain various additives such as thickeners, tackifiers, antiaging agents, antioxidants, light stabilizers, softeners, processing aids, and colorants, as long as the effects of the present invention are not impaired. EXAMPLES

[0070] The present invention will be specifically described below with reference to examples and comparative examples. However, the present invention is not limited to the following examples.

[0071] (Examples 1-15 and Comparative Examples 1-4: Preparation and Evaluation of Rubber Compositions) Distilled water was added to a commercially available latex liquid (a 98% by mass dispersion of natural rubber in water) to prepare a 60% by mass natural rubber latex liquid. A metal soap shown in Table 1 was added to the prepared latex liquid to prepare a rubber composition. The drying performance of the prepared rubber compositions was evaluated by the following method. The results are shown in Tables 1 and 2. Table 3 shows the metal soaps used in the examples.

[0072] (Drying performance test) The prepared rubber composition was applied to a glass substrate to form a coating film with a wet thickness of 152 μm. The glass substrate coated with the rubber composition was stored in a storage cabinet at a temperature of 30°C and a humidity of 60%, and the coating film was touched with a fingertip to confirm its dryness. The time when the paint for evaluation no longer adhered to the fingertip was evaluated as the drying time. This test was performed a total of three times.

[0073] [Table 1]

[0074] [Table 2]

[0075] [Table 3]

[0076] When manganese soap 2, manganese soap 3, and manganese soap 4 were used, no lumps were formed in the composition even immediately after the preparation of the rubber composition, and smooth coating was possible.

[0077] The results in Tables 1 and 2 show that adding metal soap to the latex liquid results in faster drying performance.

Claims

1. A rubber composition containing a diene rubber and a metal soap, the metal soap is a metal complex of a fatty acid metal salt of a fatty acid having 1 to 22 carbon atoms and a nitrogen atom-containing ligand compound, The rubber composition wherein the metal of the fatty acid metal salt is cobalt, manganese, iron, bismuth, zirconium, barium, calcium, strontium, nickel, copper, zinc, a rare earth or vanadium.

2. 2. The rubber composition according to claim 1, wherein the metal of the fatty acid metal salt is manganese, iron, bismuth, zirconium, barium, calcium, strontium, copper, zinc, a rare earth, or vanadium.

3. The rubber composition according to claim 1 or 2, wherein the nitrogen atom-containing ligand compound is at least one selected from the group consisting of a compound represented by the following general formula (1), a compound represented by the following general formula (2), a compound represented by the following general formula (3), and a compound represented by the following general formula (4): 【Chemistry 1】 (In the general formulas (1), (2), (3) and (4), R １１ is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, R １２ is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, X １１ is an alkylene group having 1 to 6 carbon atoms, X １２ is an alkylene group having 1 to 6 carbon atoms, Y is an ether bond or -N(R １３ )-, １３ is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; R ２１ represents a hydroxyl group, an amino group, a nitro group, a nitroso group, a sulfo group, a halogen atom, a hydrocarbon group which may have a substituent, a hydrocarbonoxy group which may have a substituent, or a hydrocarbonoxycarbonyl group which may have a substituent, p is an integer ranging from 0 to 6; R ２２ is a hydrogen atom or an aliphatic hydrocarbon group, X ２１ is a hydrogen atom, -R ２１ or a group represented by -COOR 22, R ３１ represents a hydroxyl group, an amino group, a nitro group, a nitroso group, a sulfo group, a halogen atom, a hydrocarbon group which may have a substituent, a hydrocarbonoxy group which may have a substituent, or a hydrocarbonoxycarbonyl group which may have a substituent, R ３２ is a hydrogen atom or an aliphatic hydrocarbon group, q is an integer ranging from 0 to 6; R ４１ represents a hydroxyl group, an amino group, a nitro group, a nitroso group, a sulfo group, a halogen atom, a hydrocarbon group which may have a substituent, a hydrocarbonoxy group which may have a substituent, or a hydrocarbonoxycarbonyl group which may have a substituent, r is an integer ranging from 0 to 6.

4. 3. The rubber composition according to claim 1, wherein the fatty acid having 1 to 22 carbon atoms is at least one selected from the group consisting of octylic acid, isononanoic acid, neodecanoic acid and naphthenic acid.

5. The rubber composition according to claim 1 or 2, wherein the diene rubber is at least one selected from the group consisting of natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, styrene-isoprene copolymer rubber, butadiene-isoprene copolymer rubber, and styrene-isoprene-butadiene copolymer rubber.

6. 3. The rubber composition according to claim 1, further comprising 0.01 to 10 parts by mass of the metal soap per 100 parts by mass of the diene rubber.

7. A paint comprising the rubber composition according to claim 1 or 2 and a pigment.

8. An adhesive comprising the rubber composition according to claim 1 or 2.

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