WO2012141020A1 - クロロスルホン化ポリエチレンラテックス - Google Patents
クロロスルホン化ポリエチレンラテックス Download PDFInfo
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- WO2012141020A1 WO2012141020A1 PCT/JP2012/058846 JP2012058846W WO2012141020A1 WO 2012141020 A1 WO2012141020 A1 WO 2012141020A1 JP 2012058846 W JP2012058846 W JP 2012058846W WO 2012141020 A1 WO2012141020 A1 WO 2012141020A1
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- ether sulfate
- chlorosulfonated polyethylene
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- alkyl ether
- polyoxyalkylene alkyl
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- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
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- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/26—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment
- C08L23/32—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with compounds containing phosphorus or sulfur
- C08L23/34—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers modified by chemical after-treatment by reaction with compounds containing phosphorus or sulfur by chlorosulfonation
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- C08L39/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions of derivatives of such polymers
- C08L39/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
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- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
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- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
- C09D123/32—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment by reaction with compounds containing phosphorus or sulfur
- C09D123/34—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment by reaction with compounds containing phosphorus or sulfur by chlorosulfonation
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/26—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment
- C09J123/32—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment by reaction with compounds containing phosphorus or sulfur
- C09J123/34—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment by reaction with compounds containing phosphorus or sulfur by chlorosulfonation
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J139/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Adhesives based on derivatives of such polymers
- C09J139/04—Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member
- C09J139/06—Homopolymers or copolymers of N-vinyl-pyrrolidones
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- C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2323/32—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with phosphorus- or sulfur-containing compounds
- C08J2323/34—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with phosphorus- or sulfur-containing compounds by chlorosulfonation
Definitions
- the present invention relates to latex, particularly chlorosulfonated polyethylene latex.
- Chlorosulfonated polyethylene can form a film with excellent heat resistance, weather resistance, ozone resistance, chemical resistance, abrasion resistance, flex fatigue resistance, etc., so it can be used as a coating material or adhesive material in the latex state.
- timing belts used in automobiles are strengthened by combining reinforcing fibers such as polyamide resin fibers and glass fibers with matrix rubbers such as ethylene-propylene-diene rubber (EPDM) and hydrogenated acrylonitrile butadiene rubber (HNBR).
- EPDM ethylene-propylene-diene rubber
- HNBR hydrogenated acrylonitrile butadiene rubber
- a resorcin-formalin-latex adhesive (hereinafter sometimes referred to as “RFL adhesive”) using chlorosulfonated polyethylene latex as a latex component for adhesion between the matrix rubber and the reinforcing fiber. It is used.
- Chlorosulfonated polyethylene latex used in RFL adhesives and the like has been used in the past by using polyoxyethylene alkylphenyl ether sulfate as an emulsifier from the standpoint of stability under standing and the adhesive strength of RFL adhesives. It is common to prepare (for example, patent documents 1 and 2). However, the latex prepared using the emulsifier has been regarded as a problem of remaining alkylphenol ether compounds that are suspected to be endocrine disruptors, and is now being regulated from the viewpoint of safety to the living body and the environment. .
- fatty acid salts such as oleic acid and stearic acid
- organic sulfate salts such as sodium lauryl sulfate and higher alcohol sodium sulfate, sodium dodecylbenzenesulfonate and alkylnaphthalenesulfonic acid
- Organic sulfonates such as sodium are also known (for example, Patent Document 3).
- chlorosulfonated polyethylene latices prepared with these emulsifiers are inferior in static stability and mechanical stability compared to those prepared with polyoxyethylene alkylphenyl ether sulfate, and RFL adhesives It is difficult to increase the adhesive force even if it is used for the above.
- the object of the present invention is to increase the safety to living organisms and the environment as well as the stationary stability and the mechanical stability of the chlorosulfonated polyethylene latex, and when the chlorosulfonated polyethylene latex is used as an RFL adhesive, It is to prevent the adhesive strength of the agent from being impaired.
- the present invention relates to a chlorosulfonated polyethylene latex, which comprises an aqueous dispersion medium, chlorosulfonated polyethylene, a polyoxyalkylene alkyl ether sulfate represented by the following formula (I), and a fatty acid salt. Including.
- R 1 represents an alkyl group having 6 to 20 carbon atoms
- R 2 represents hydrogen or a methyl group
- n represents an integer of 2 to 40
- M represents an alkali metal
- the chlorosulfonated polyethylene latex preferably contains 0.3 to 12 parts by mass of polyoxyalkylene alkyl ether sulfate and 0.1 to 2.5 parts by mass of fatty acid salt with respect to 100 parts by mass of chlorosulfonated polyethylene. .
- the chlorosulfonated polyethylene latex of the present invention may further contain polyvinyl pyrrolidone.
- the chlorosulfonated polyethylene latex is composed of 0.3 to 12 parts by mass of polyoxyalkylene alkyl ether sulfate, 0.1 to 2.5 parts by mass of fatty acid salt and 100 parts by mass of chlorosulfonated polyethylene. It is preferable to contain 0.01 to 10 parts by weight of pyrrolidone.
- polyoxyalkylene alkyl ether sulfate used in the present invention examples include sodium polyoxyethylene lauryl ether sulfate, sodium polyoxyethylene tridecyl ether sulfate, sodium polyoxyethylene myristyl ether sulfate, sodium polyoxypropylene lauryl ether sulfate, poly It is at least one selected from the group consisting of sodium oxypropylene tridecyl ether sulfate, polyoxyethylene polyoxypropylene sodium lauryl ether sulfate, and polyoxyethylene polyoxypropylene sodium tridecyl ether sulfate.
- polyoxyalkylene alkyl ether sulfate used in the present invention include polyoxyalkylene alkyl ether sulfate (A) in which n is an integer of 9 to 35 in formula (I), and n in formula (I). And polyoxyalkylene alkyl ether sulfate (B) having an integer of 2 to 8.
- the polyoxyalkylene alkyl ether sulfate contains 0.1 to 5 parts by mass of the polyoxyalkylene alkyl ether sulfate (B) with respect to 1 part by mass of the polyoxyalkylene alkyl ether sulfate (A). Is preferred.
- the fatty acid salt used in the present invention is, for example, oleate.
- the polyvinyl pyrrolidone used in the present invention preferably has a mass average molecular weight of 10,000 to 5,000,000.
- the chlorosulfonated polyethylene latex of the present invention contains a specific polyoxyalkylene alkyl ether sulfate and a fatty acid salt. For this reason, it is safer to the living body and the environment than the one using polyoxyethylene alkylphenyl ether sulfate ester salt, which is suspected of endocrine disrupting action, as an emulsifier, and at the same time, it has both stationary stability and mechanical stability. It is good. Further, even when used as a latex component of an RFL adhesive, the adhesive strength of the adhesive is difficult to be impaired.
- the present invention according to another aspect relates to a method for producing a chlorosulfonated polyethylene latex, which comprises the presence of a polyoxyalkylene alkyl ether sulfate represented by the above formula (I) and a fatty acid salt.
- the method includes a step of preparing an emulsion by dispersing chlorosulfonated polyethylene dissolved in an organic solvent in an aqueous dispersion medium, and a step of removing the organic solvent from the emulsion.
- This production method may further include a step of concentrating the emulsion after removing the organic solvent with a filtration membrane.
- the method for producing a chlorosulfonated polyethylene latex according to the present invention uses a specific polyoxyalkylene alkyl ether sulfate and a fatty acid salt, the chlorosulfonated polyethylene latex of the present invention can be produced.
- the present invention according to still another aspect relates to an emulsifier for chlorosulfonated polyethylene, the emulsifier comprising a first agent comprising a polyoxyalkylene alkyl ether sulfate represented by the above formula (I), and a fatty acid salt. And a second agent.
- the emulsifier for chlorosulfonated polyethylene of the present invention contains a first agent composed of a specific polyoxyalkylene alkyl ether sulfate and a second agent composed of a fatty acid salt, the chlorosulfonated polyethylene latex of the present invention is produced. Can be used to
- the present invention according to still another aspect relates to a resorcin-formalin-latex adhesive, which contains chlorosulfonated polyethylene latex as a latex component.
- the resorcin-formalin-latex adhesive of the present invention contains the chlorosulfonated polyethylene latex of the present invention as a latex component, so that it is safe for the living body and the environment, and at the same time, is stationary stability and mechanical stability. Good adhesion.
- the present invention according to still another aspect relates to a molded product, and this molded product is manufactured by using the chlorosulfonated polyethylene latex of the present invention as a material.
- the chlorosulfonated polyethylene latex of the present invention contains an aqueous dispersion medium, chlorosulfonated polyethylene, polyoxyalkylene alkyl ether sulfate and fatty acid salt.
- the aqueous dispersion medium used here is one normally used for latex, for example, tap water or deionized water.
- chlorosulfonated polyethylene can be used.
- examples of commercially available products include DuPont Dow Elastomer Japan Co., Ltd. trade name “Hypalon” and Tosoh Corporation trade name “TOSO-CSM”.
- the mass average molecular weight of the chlorosulfonated polyethylene is preferably 50,000 to 300,000, more preferably 100,000 to 180,000.
- the chlorine content of chlorosulfonated polyethylene is preferably 20 to 50% by mass, more preferably 20 to 30% by mass.
- the sulfur content of the chlorosulfonated polyethylene is preferably 0.5 to 2.0 mass%, more preferably 0.8 to 1.5 mass%. Two or more types of chlorosulfonated polyethylene having different mass average molecular weight, chlorine content or sulfur content may be used in combination.
- the above-mentioned preferable ranges of the mass average molecular weight, chlorine content and sulfur content of chlorosulfonated polyethylene are based on the assumption that the chlorosulfonated polyethylene latex of the present invention is used as the latex component of the RFL adhesive. And by setting each range as described above, an RFL adhesive having good adhesive strength can be obtained.
- polyoxyalkylene alkyl ether sulfate those represented by the following formula (I) are used.
- R 1 represents an alkyl group having 6 to 20 carbon atoms.
- R 1 has less than 6 carbon atoms, the hydrophilicity of the polyoxyalkylene alkyl ether sulfate becomes too strong.
- an adhesive is prepared, its adhesive strength is impaired.
- the number of carbon atoms in R 1 is more than 20, such polyoxyalkylene alkyl ether sulfates have poor water solubility, so that the dispersion stability of the latex is impaired.
- R 2 represents hydrogen or a methyl group.
- n is the number of added moles of alkylene oxide, and is an integer of 2 to 40, preferably an integer of 2 to 35.
- Polyoxyalkylene alkyl ether sulfates with n of less than 2 are difficult to handle because they tend to foam.
- an RFL adhesive is prepared from a chlorosulfonated polyethylene latex obtained by using a polyoxyalkylene alkyl ether sulfate having an n of more than 40, when the RFL adhesive is applied to a reinforcing fiber fabric or the like, There is a possibility that sliminess may occur and the quality of the product may be impaired.
- M represents an alkali metal, for example, sodium or potassium.
- the polyoxyalkylene unit represented by (CH 2 CHR 2 —O) n has two types of polyoxyalkylene having different R 2 , that is, polyoxyethylene ((CH 2 CH 2 —O) x) and polyoxypropylene ((CH 2 CH (CH 3 ) —O) y) may be included so that the sum of x and y is n.
- polyoxyalkylene alkyl ether sulfate represented by the formula (I) include sodium polyoxyethylene lauryl ether sulfate, sodium polyoxyethylene tridecyl ether sulfate, sodium polyoxyethylene myristyl ether sulfate and polyoxyethylene oleyl.
- Polyoxypropylenes such as polyoxyethylene alkyl ether sulfates such as sodium ether sulfate, sodium polyoxypropylene lauryl ether sulfate, sodium polyoxypropylene tridecyl ether sulfate, sodium polyoxypropylene myristyl ether sulfate and sodium polyoxypropylene oleyl ether sulfate Alkyl ether sulfate and polyoxyethylene polyoxypropylene lauryl ether sulfate sodium Arm and polyoxyethylene polyoxypropylene tridecyl ether, polyoxyethylene polyoxypropylene alkyl ether sulfates such as sodium sulfate.
- polyoxyethylene alkyl ether sulfates such as sodium ether sulfate, sodium polyoxypropylene lauryl ether sulfate, sodium polyoxypropylene tridecyl ether sulfates such as sodium sulfate.
- polyoxyalkylene alkyl ether sulfate represented by the formula (I) one type may be used alone, or two or more types may be used in combination.
- polyoxyalkylene alkyl ether sulfate it is particularly preferable that the polyoxyalkylene alkyl ether sulfate is an integer in which n is 2 to 20 in the formula (I).
- the polyoxyalkylene alkyl ether sulfate is composed of the polyoxyalkylene alkyl ether sulfate (A) in which n is an integer of 9 to 35 in the formula (I) and the formula (I ) And a polyoxyalkylene alkyl ether sulfate (B) in which n is an integer of 2 to 8 is preferably used.
- the polyoxyalkylene alkyl ether sulfate (A) and the polyoxyalkylene alkyl ether sulfate (B) are preferably selected so that the difference in n in the formula (I) is 8 to 30.
- n 8 or more and 30 or less
- the chlorosulfonated polyethylene latex can be further improved in static stability and mechanical stability, and at the same time, the adhesive strength of the RFL adhesive can be further increased.
- the polyoxyalkylene alkyl ether sulfate (A) and the polyoxyalkylene alkyl ether sulfate (B) are used in combination, the polyoxyalkylene alkyl ether sulfate is added to 1 part by mass of the polyoxyalkylene alkyl ether sulfate (A).
- the polyoxyalkylene alkyl ether sulfate (B) is preferably contained in an amount of 0.1 to 5 parts by mass, more preferably 0.3 to 3 parts by mass.
- the chlorosulfonated polyethylene latex has a higher static stability and mechanical stability.
- the adhesive strength of the RFL adhesive can be further increased.
- the polyoxyalkylene alkyl ether sulfate content is preferably set to 0.3 to 12 parts by mass with respect to 100 parts by mass of the chlorosulfonated polyethylene, and set to 3 to 8 parts by mass. More preferably.
- the usage-amount of polyoxyalkylene alkyl ether sulfate is less than 0.3 mass part, the stationary stability and mechanical stability of chlorosulfonated polyethylene latex may fall.
- it exceeds 12 parts by mass the adhesive strength of the RFL adhesive using the chlorosulfonated polyethylene latex may be reduced.
- R 3 represents an alkyl group having 5 to 24 carbon atoms
- M represents sodium, potassium, ammonia or an amine.
- preferable fatty acid salts include oleate, stearate, laurate, myristate and palmitate. Of these, oleate can be improved in the static stability and mechanical stability of chlorosulfonated polyethylene latex, and the adhesive strength of RFL adhesive using chlorosulfonated polyethylene latex can be increased. Is particularly preferred.
- the amount of fatty acid salt used is preferably set to 0.1 to 2.5 parts by mass, more preferably 0.4 to 1.5 parts by mass, with respect to 100 parts by mass of chlorosulfonated polyethylene.
- the usage-amount of fatty acid salt is less than 0.1 mass part, the stationary stability of chlorosulfonated polyethylene latex may fall. On the contrary, when it exceeds 2.5 mass parts, the adhesive force of the RFL adhesive using chlorosulfonated polyethylene latex may be reduced.
- the use ratio of the polyoxyalkylene alkyl ether sulfate and the fatty acid salt is not particularly limited, but the use amount of the polyoxyalkylene alkyl ether sulfate relative to the fatty acid salt is The ratio is preferably set to 3 to 15 times, and more preferably set to 3.5 to 12 times.
- the amount of polyoxyalkylene alkyl ether sulfate used is less than 3 times the mass of the fatty acid salt or more than 15 times the mass of the fatty acid salt, the static stability and mechanical stability of the chlorosulfonated polyethylene latex may be reduced.
- the adhesive strength of the RFL adhesive using chlorosulfonated polyethylene latex may be reduced.
- the average particle size of the chlorosulfonated polyethylene is preferably 5 ⁇ m or less, more preferably 0.1 to 1.5 ⁇ m.
- the average particle diameter of the chlorosulfonated polyethylene exceeds 5 ⁇ m, the sedimentation of the particles becomes fast and the static stability may be lowered.
- mechanical stability may be lowered, there is a possibility that problems in handling such as agglomeration and clogging may occur when transported using a pump.
- the average particle size is less than 0.1 ⁇ m, the viscosity becomes excessively large and handling may be difficult.
- the chlorosulfonated polyethylene latex of the present invention is usually prepared by dispersing chlorosulfonated polyethylene dissolved in an organic solvent in an aqueous dispersion medium in the presence of a polyoxyalkylene alkyl ether sulfate represented by the formula (I) and a fatty acid salt.
- a polyoxyalkylene alkyl ether sulfate represented by the formula (I) and a fatty acid salt represented by the formula (I) and a fatty acid salt.
- the organic solvent for dissolving the chlorosulfonated polyethylene is not particularly limited, but examples thereof include aliphatic hydrocarbon organic solvents such as hexane and heptane, and alicyclic hydrocarbons such as cyclohexane.
- Organic solvents aromatic hydrocarbon organic solvents such as benzene, toluene and xylene, chlorinated hydrocarbon organic solvents such as chloroform and 1,2-dichloroethane, alcohol organic solvents such as methanol, ethanol, isopropyl alcohol and t-butanol Etc. These organic solvents may be used alone or in combination of two or more.
- the amount of the organic solvent used is not particularly limited, but is preferably set so that the concentration of chlorosulfonated polyethylene in the organic solvent solution is 3 to 20% by mass, and 12 to 16% by mass. It is more preferable to set.
- concentration of the chlorosulfonated polyethylene in the organic solvent solution exceeds 20% by mass, the stability of the emulsion is lowered because the chlorosulfonated polyethylene is difficult to be uniformly dissolved.
- the particle size of the sulfonated polyethylene may increase due to aggregation. This possibility is so remarkable that the emulsion for removing the organic solvent in Step B is unstable.
- the concentration of chlorosulfonated polyethylene is less than 3% by mass, the stability of the emulsion cannot be increased only by increasing the amount of the organic solvent used, which is uneconomical.
- the concentration of chlorosulfonated polyethylene in the organic solvent solution is preferable to set as low as possible, but from the viewpoint of increasing the economics by reducing the amount of organic solvent used, In the above preferred range, it is preferable to set the concentration of chlorosulfonated polyethylene as high as possible.
- the temperature at which the organic solvent solution of chlorosulfonated polyethylene is prepared is not particularly limited, but is usually preferably controlled to 100 ° C. or lower.
- the polyoxyalkylene alkyl ether sulfate and fatty acid salt represented by the formula (I) are dissolved in an aqueous dispersion medium, and an organic solvent solution of chlorosulfonated polyethylene is dissolved in the aqueous dispersion medium.
- An emulsion is prepared by adding and dispersing.
- the aqueous dispersion medium used here is the tap water or deionized water described above.
- the polyoxyalkylene alkyl ether sulfate and fatty acid salt used in this form are usually prepared as an emulsifier containing a first agent comprising a polyoxyalkylene alkyl ether sulfate and a second agent comprising a fatty acid salt. In this emulsifier, the first agent and the second agent may be added separately to the aqueous dispersion medium, or the first agent and the second agent are mixed and then added to the aqueous dispersion medium. Also good.
- the fatty acid is dissolved together in an organic solvent solution of chlorosulfonated polyethylene, and this organic solvent solution is dissolved in the polyoxyalkylene alkyl ether sulfate represented by the formula (I) and the fatty acid.
- An emulsion is prepared by adding and dispersing in a water-based dispersion medium in which a compatibilizer is dissolved.
- the fatty acid used in this form corresponds to the fatty acid salt represented by the formula (II), and M in the formula is hydrogen.
- the neutralizing agent is capable of acting on a fatty acid to form a fatty acid salt represented by the formula (II).
- M in the formula (II) for example, sodium hydroxide, potassium hydroxide, It can be selected from aqueous ammonia, alkanolamine, alkylamine, morpholine, and the like.
- the amount of aqueous dispersion medium used in step A is not particularly limited, but in the case of the first embodiment, the total concentration of polyoxyalkylene alkyl ether sulfate and fatty acid salt in the aqueous dispersion medium is 0.1. It is preferable to set it to ⁇ 50 mass%.
- the total concentration of the polyoxyalkylene alkyl ether sulfate contained in the aqueous dispersion medium, the fatty acid salt formed by the fatty acid in the organic solvent solution and the neutralizing agent in the aqueous dispersion medium is an aqueous dispersion. It is preferably set to be 0.1 to 50% by mass with respect to the medium.
- the amount of polyoxyalkylene alkyl ether sulfate and fatty acid salt represented by the formula (I) is 0 for 100 parts by mass of chlorosulfonated polyethylene dissolved in an organic solvent. It is preferably set to 3 to 12 parts by mass and 0.1 to 2.5 parts by mass.
- the use amount of the polyoxyalkylene alkyl ether sulfate represented by the formula (I) is preferably set similarly to the case of the first form.
- a fatty acid and a neutralizing agent it is preferable to set the usage-amount of a fatty acid and a neutralizing agent so that the quantity of the fatty acid salt formed by adding an organic-solvent solution to an aqueous dispersion medium may become the same as that of the case of a 1st form.
- an emulsifier having an appropriate shearing force for example, a method of stirring and mixing using a homogenizer or a colloid mill, a method of dispersing and mixing using an ultrasonic disperser, etc. is adopted.
- a method of stirring and mixing is preferable.
- the temperature at the time of stirring and mixing is not particularly limited, but is preferably set to 5 to 70 ° C, and particularly preferably set to 35 to 60 ° C.
- the average particle diameter of the chlorosulfonated polyethylene in the target chlorosulfonated polyethylene latex can be adjusted by controlling stirring and mixing and ultrasonic dispersion during the preparation of the emulsion.
- Step B as a method for removing the organic solvent from the emulsion obtained in Step A, for example, a general method such as a method of heating the emulsion under reduced pressure can be employed.
- the emulsion after removing the organic solvent can be concentrated to a desired concentration as necessary.
- the concentration method is not particularly limited, and for example, a method such as heat concentration, centrifugation, filtration, or wet separation can be employed.
- a method of concentrating using a filtration membrane is preferable.
- a method of concentrating using an ultrafiltration membrane is preferable because it can be concentrated in a relatively short time, has a low capital investment, and can be easily reused after washing.
- the solid content concentration of the target chlorosulfonated polyethylene latex obtained through Step B is preferably 20 to 60% by mass.
- the solid content concentration is less than 20% by mass, not only is the use difficult due to excessive water content, but also the bulkiness increases, so that the efficiency of transfer and use is impaired, which is uneconomical.
- it exceeds 60 mass% since a viscosity becomes high, there exists a possibility that handling may become difficult.
- the resulting chlorosulfonated polyethylene latex has a pH of 2 to 7 and the dispersibility may be slightly unstable.
- the dispersibility can be improved by adjusting the pH to 7 to 10 by adding.
- the neutralizing agent for example, common ones such as sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium carbonate and calcium oxide can be used.
- the chlorosulfonated polyethylene latex of the present invention is a latex component of an adhesive such as an RFL adhesive, a binder material of various plastics, a material such as a coating material or a fiber treatment agent, for example, in addition to an automobile timing belt and a brake hose, although it can be used as a material for producing various molded products such as a coating film, a window frame and a fiber composite material, it is particularly suitable for the latex component of the RFL adhesive.
- the RFL adhesive containing the chlorosulfonated polyethylene latex of the present invention has a high static stability equivalent to or higher than that of a conventional product containing a chlorosulfonated polyethylene latex prepared using an alkylphenol ether compound suspected to be an endocrine disrupting substance. , Mechanical stability and adhesive strength, but safer to the living body and the environment than the conventional products.
- the RFL adhesive containing the chlorosulfonated polyethylene latex of the present invention as a latex component improves the coatability and stability, and increases the adhesive force, so that a thickener, a tackifier, a plasticizer, a stabilizer and the like are added.
- An agent can be added as appropriate.
- Such additives can be added to the prepared RFL adhesive, but can also be added in advance to the chlorosulfonated polyethylene latex. Moreover, depending on the kind of additive, it can also be added to the organic solvent solution or aqueous dispersion medium used in Step A when preparing the chlorosulfonated polyethylene latex. In general, the additive is preferably added as an aqueous solution or aqueous dispersion of individual or mixture.
- polyvinylpyrrolidone An example of a stabilizer used as an additive is polyvinylpyrrolidone.
- Polyvinylpyrrolidone is excellent in compatibility with chlorosulfonated polyethylene and exhibits a protective colloid action, so that the stationary stability and mechanical stability of the chlorosulfonated polyethylene latex can be improved.
- Polyvinylpyrrolidone is a polymer obtained by polymerizing vinylpyrrolidone as at least one monomer component, and commercially available products can be used.
- Various commercially available polymer materials containing polyvinyl pyrrolidone as a component can also be used as polyvinyl pyrrolidone.
- the mass average molecular weight of the polyvinylpyrrolidone used is not particularly limited, but it can effectively improve the stationary stability and mechanical stability of the chlorosulfonated polyethylene latex, and is 10,000 to 5 , 000,000 are preferable, 240,000 to 3,000,000 are more preferable, and 900,000 to 1,500,000 are particularly preferable.
- the amount of polyvinylpyrrolidone used (when the above polymer material containing polyvinylpyrrolidone is used as polyvinylpyrrolidone, the amount used in terms of polyvinylpyrrolidone) is 0.01 to 10 parts by mass with respect to 100 parts by mass of chlorosulfonated polyethylene.
- the amount is preferably set, and more preferably 0.1 to 1.5 parts by mass.
- the sodium polyoxyalkylene alkyl ether sulfate used in the following examples and comparative examples is as follows.
- Example 1 Chlorosulfonated polyethylene (trade name “Hypalon 45” from DuPont Dow Elastomer Japan Co., Ltd .: mass average molecular weight 142,000, chlorine content 23.5 mass%, sulfur content 1.0 mass%) 45 g, toluene 255 g and olein
- An organic solvent solution was prepared by charging 0.45 g of acid into a separable flask having an internal volume of 500 mL, and stirring and dissolving at 85 ° C. for 4 hours.
- 7.5 g of sodium polyoxyalkylene alkyl ether sulfate (1) and 0.188 g of potassium hydroxide were dissolved in 170 g of water to prepare an aqueous solution.
- Example 2 Instead of 7.5 g of sodium polyoxyalkylene alkyl ether sulfate (1), a mixture of 4.5 g of sodium polyoxyalkylene alkyl ether sulfate (1) and 3.6 g of sodium polyoxyalkylene alkyl ether sulfate (2) was used. A chlorosulfonated polyethylene latex was produced in the same manner as in Example 1 except for the above.
- Example 3 The same procedure as in Example 2 was carried out except that the amounts of sodium polyoxyalkylene alkyl ether sodium sulfate (1) and polyoxyalkylene alkyl ether sodium sulfate (2) used were changed to 1.5 g and 7.2 g, respectively. A sulfonated polyethylene latex was produced.
- Example 4 The procedure of Example 2 was repeated except that the amounts of sodium polyoxyalkylene alkyl ether sulfate (1) and sodium polyoxyalkylene alkyl ether sulfate (2) were changed to 6.0 g and 1.8 g, respectively. A sulfonated polyethylene latex was produced.
- Example 5 The point that the amount of oleic acid used was changed to 0.225 g, 7.5 g of sodium polyoxyalkylene alkyl ether sulfate (1) instead of 7.5 g of sodium polyoxyalkylene alkyl ether sulfate (1) and polyoxyalkylene alkyl ether sulfate A chlorosulfonated polyethylene latex was produced in the same manner as in Example 1 except that a mixture with 0.9 g of sodium (2) was used and that the amount of potassium hydroxide used was changed to 0.141 g. did.
- Example 6 Chlorosulfonated polyethylene was operated in the same manner as in Example 1 except that 7.5 g of sodium polyoxyalkylene alkyl ether sulfate (1) was replaced by 9.0 g of sodium polyoxyalkylene alkyl ether sulfate (2). A latex was produced.
- Example 7 In the preparation of the aqueous solution, instead of 7.5 g of sodium polyoxyalkylene alkyl ether sulfate (1), 4.5 g of sodium polyoxyalkylene alkyl ether sulfate (1) and 3.6 g of sodium polyoxyalkylene alkyl ether sulfate (2) In addition, 0.09 g of polyvinylpyrrolidone (trade name “PVP K-90” of ISP Japan Co., Ltd .: mass average molecular weight 900,000 to 1,500,000) was also dissolved in water. In the same manner as in Example 1, a chlorosulfonated polyethylene latex was produced.
- PVP K-90 of ISP Japan Co., Ltd .
- Example 8 A chlorosulfonated polyethylene latex was produced in the same manner as in Example 1 except that sodium polyoxyalkylene alkyl ether sulfate (3) was used instead of sodium polyoxyalkylene alkyl ether sulfate (1).
- Example 9 A chlorosulfonated polyethylene latex was produced in the same manner as in Example 1 except that sodium polyoxyalkylene alkyl ether sulfate (4) was used instead of sodium polyoxyalkylene alkyl ether sulfate (1).
- Example 10 A chlorosulfonated polyethylene latex was produced in the same manner as in Example 2 except that sodium polyoxyalkylene alkyl ether sulfate (5) was used instead of sodium polyoxyalkylene alkyl ether sulfate (2).
- Example 11 A chlorosulfonated polyethylene latex was prepared in the same manner as in Example 2 except that the solid content concentration was 40% by heating to 80 ° C. under reduced pressure without using an ultrafilter. Manufactured.
- Example 12 A chlorosulfonated polyethylene latex was produced in the same manner as in Example 7 except that the amount of polyvinylpyrrolidone used was changed to 0.025 g.
- Example 13 A chlorosulfonated polyethylene latex was produced in the same manner as in Example 7 except that the amount of polyvinylpyrrolidone used was changed to 0.45 g.
- Example 14 A chlorosulfonated polyethylene latex was produced in the same manner as in Example 7 except that the amount of polyvinylpyrrolidone used was changed to 0.9 g.
- Example 15 A chlorosulfonated polyethylene latex was produced in the same manner as in Example 7 except that the trade name “PVP K-30: mass average molecular weight 40,000 to 80,000” of ISP Japan Co., Ltd. was used as polyvinylpyrrolidone. did.
- Example 16 A chlorosulfonated polyethylene latex was produced in the same manner as in Example 7 except that the trade name “PVP K-60: mass average molecular weight 240,000 to 450,000” of ISP Japan Co., Ltd. was used as polyvinylpyrrolidone. did.
- Example 17 Chlorosulfonated by operating in the same manner as in Example 7 except that the trade name “PVP K-120: mass average molecular weight 2,000,000 to 3,000,000” of ISP Japan Co., Ltd. was used as polyvinylpyrrolidone. Polyethylene latex was produced.
- Example 18 Changed the amount of oleic acid to 1.35 g, changed the amount of polyoxyalkylene alkyl ether sodium sulfate (1) to 4.5 g, and changed the amount of potassium hydroxide to 0.376 g
- a chlorosulfonated polyethylene latex was produced in the same manner as in Example 1 except for the above.
- Comparative Example 2 Implemented except for changing the amount of oleic acid used to 2.7 g, not using sodium polyoxyalkylene alkyl ether sulfate (1), and changing the amount of potassium hydroxide used to 0.658 g.
- a chlorosulfonated polyethylene latex was produced.
- Comparative Example 3 In place of 7.5 g of sodium polyoxyalkylene alkyl ether sulfate (1), 2.81 g of sodium dioctyl sulfosuccinate (Nippon Yushi Co., Ltd., trade name “Lapisol A-80”: active ingredient concentration 80 mass%) was used. A chlorosulfonated polyethylene latex was produced in the same manner as in Example 1 except for the above.
- Example 1 the average particle size of the emulsion prepared in the process of producing the chlorosulfonated polyethylene latex and the finally obtained chlorosulfonated polyethylene latex was measured. Further, the mechanical stability of the obtained chlorosulfonated polyethylene latex was evaluated. Furthermore, an RFL adhesive was prepared using the chlorosulfonated polyethylene latex produced in each example and comparative example, and the adhesive strength was evaluated. The measurement method and evaluation method are as follows. The results are shown in Table 1.
- the average particle size of the emulsion and latex was measured using a laser diffraction particle size distribution analyzer (trade name “SALD-2000J” manufactured by Shimadzu Corporation).
- SALD-2000J laser diffraction particle size distribution analyzer
- the average particle diameter is a value calculated assuming that the particle to be measured showing the same diffraction and scattered light pattern as a sphere having a diameter of 1 ⁇ m has a particle diameter of 1 ⁇ m regardless of the shape.
- a nylon 66 woven fabric (10 cm ⁇ 10 cm ⁇ 0.2 mm) was immersed in the obtained RFL adhesive, and then heat treated at 150 ° C. for 3 minutes to fix, thereby obtaining a rubber reinforcing fiber fabric.
- the obtained fiber fabric for reinforcing rubber and an EPDM rubber sheet (10 cm ⁇ 10 cm ⁇ 2 mm) prepared by the composition shown in Table 2 were alternately laminated in 5 layers so that the EPDM rubber sheets are arranged on both surfaces.
- An EPDM rubber composite reinforced with a rubber reinforcing fiber fabric was obtained by pressing at 160 ° C. for 20 minutes and vulcanizing and bonding.
- the obtained EPDM rubber composite was cut into a width of 25 mm, and the peel strength was measured using a testing machine (trade name “AGS-J”, manufactured by Shimadzu Corporation) under conditions of a tensile speed of 50 mm / min and an angle of 180 degrees. . If the peel strength is 10 kgf / 25 mm or more, it can be determined that the adhesive strength is good, and if it is 20 kgf / 25 mm or more, it can be determined that the adhesive strength is particularly excellent.
- the chlorosulfonated polyethylene latex obtained in Examples 1 to 18 is excellent in static stability because of the small average particle diameter, and is also excellent in mechanical stability. It can also be seen that when used in an RFL adhesive, it exhibits good adhesion. In particular, when Examples 1 to 17 and Example 18 are compared, it can be seen that by adjusting the blending ratio in the latex, a remarkably excellent adhesive force is exhibited when used in an RFL adhesive.
- chlorosulfonated polyethylene latex obtained in Comparative Examples 1 to 3 had insufficient adhesive strength when used in an RFL adhesive.
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Abstract
Description
日本油脂株式会社の商品名「トラックスET-314」
これは、式(I)におけるR1が炭素数12のアルキル基でありかつnが16であるポリオキシエチレンポリオキシプロピレンラウリルエーテル硫酸ナトリウムと、同R1が炭素数13のアルキル基でありかつnが16であるポリオキシエチレンポリオキシプロピレントリデシルエーテル硫酸ナトリウムとの混合物であり、有効成分濃度が30質量%の水溶液である。
日本油脂株式会社の商品名「パーソフトEF」
これは、式(I)におけるR1が炭素数12のアルキル基でありかつnが3であるポリオキシエチレンラウリルエーテル硫酸ナトリウムと式(I)におけるR1が炭素数14のアルキル基でありかつnが3であるポリオキシエチレンミリスチルエーテル硫酸ナトリウムとの混合物であり、有効成分濃度が25質量%の水溶液である。
日本油脂株式会社の商品名「トラックスET-311」
これは、式(I)におけるR1が炭素数12のアルキル基でありかつnが11であるポリオキシエチレンポリオキシプロピレンラウリルエーテル硫酸ナトリウムと、同R1が炭素数13のアルキル基でありかつnが11であるポリオキシエチレンポリオキシプロピレントリデシルエーテル硫酸ナトリウムとの混合物であり、有効成分濃度が30質量%の水溶液である。
日本油脂株式会社の商品名「トラックスET-330」
これは、式(I)におけるR1が炭素数12のアルキル基でありかつnが30であるポリオキシエチレンポリオキシプロピレンラウリルエーテル硫酸ナトリウムと、同R1が炭素数13のアルキル基でありかつnが30であるポリオキシエチレンポリオキシプロピレントリデシルエーテル硫酸ナトリウムとの混合物であり、有効成分濃度が30質量%の水溶液である。
花王株式会社の商品名「エマール20CM」
これは、式(I)におけるR1が炭素数12のアルキル基でありかつnが3であるポリオキシエチレンラウリルエーテル硫酸ナトリウムと、式(I)におけるR1が炭素数13のアルキル基でありかつnが3であるポリオキシエチレントリデシルエーテル硫酸ナトリウムとの混合物であり、有効成分濃度が25質量%の水溶液である。
クロロスルホン化ポリエチレン(デュポンダウエラストマージャパン株式会社の商品名「ハイパロン45」:質量平均分子量142,000、塩素含有量23.5質量%、硫黄含有量1.0質量%)45g、トルエン255gおよびオレイン酸0.45gを内容積が500mLのセパラブルフラスコに仕込み、85℃で4時間撹拌して溶解することで有機溶媒溶液を調製した。また、ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)7.5gと水酸化カリウム0.188gとを170gの水に溶解し、水溶液を調製した。
ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)7.5gに替えて、ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)4.5gとポリオキシアルキレンアルキルエーテル硫酸ナトリウム(2)3.6gとの混合物を用いた点を除いて実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)およびポリオキシアルキレンアルキルエーテル硫酸ナトリウム(2)の使用量をそれぞれ1.5gおよび7.2gに変更した点を除いて実施例2と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)およびポリオキシアルキレンアルキルエーテル硫酸ナトリウム(2)の使用量をそれぞれ6.0gおよび1.8gに変更した点を除いて実施例2と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
オレイン酸の使用量を0.225gに変更した点、ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)7.5gに替えてポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)7.5gとポリオキシアルキレンアルキルエーテル硫酸ナトリウム(2)0.9gとの混合物を用いた点、および、水酸化カリウムの使用量を0.141gに変更した点を除いて実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)7.5gに替えて、ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(2)9.0gを用いた点を除いて実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
水溶液の調製において、ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)7.5gに替えて、ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)4.5gとポリオキシアルキレンアルキルエーテル硫酸ナトリウム(2)3.6gとの混合物を用い、また、ポリビニルピロリドン0.09g(ISPジャパン株式会社の商品名「PVP K-90」:質量平均分子量900,000~1,500,000)を併せて水に溶解した点を除いて実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)に替えてポリオキシアルキレンアルキルエーテル硫酸ナトリウム(3)を用いた以外は実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)に替えてポリオキシアルキレンアルキルエーテル硫酸ナトリウム(4)を用いた以外は実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(2)に替えてポリオキシアルキレンアルキルエーテル硫酸ナトリウム(5)を用いた以外は実施例2と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
限外ろ過器を用いずに、減圧下で80℃に加熱することで固形分濃度が40%になるように濃縮した点を除いて実施例2と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリビニルピロリドンの使用量を0.025gに変更した点を除いて実施例7と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリビニルピロリドンの使用量を0.45gに変更した点を除いて実施例7と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリビニルピロリドンの使用量を0.9gに変更した点を除いて実施例7と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリビニルピロリドンとしてISPジャパン株式会社の商品名「PVP K-30:質量平均分子量40,000~80,000」を用いた点を除いて実施例7と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリビニルピロリドンとしてISPジャパン株式会社の商品名「PVP K-60:質量平均分子量240,000~450,000」を用いた点を除いて実施例7と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリビニルピロリドンとしてISPジャパン株式会社の商品名「PVP K-120:質量平均分子量2,000,000~3,000,000」を用いた点を除いて実施例7と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
オレイン酸の使用量を1.35gに変更した点、ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)の使用量を4.5gに変更した点、および、水酸化カリウムの使用量を0.376gに変更した点を除いて実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
オレイン酸を使用しなかった点、ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)の使用量を9.0gに変更した点、および、水酸化カリウムの使用量を0.094gに変更した点を除いて実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
オレイン酸の使用量を2.7gに変更した点、ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)を用いなかった点、および、水酸化カリウムの使用量を0.658gに変更した点を除いて実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
ポリオキシアルキレンアルキルエーテル硫酸ナトリウム(1)7.5gに替えてジオクチルスルホコハク酸ナトリウム(日本油脂株式会社の商品名「ラピゾールA-80」:有効成分濃度80質量%)を2.81g用いた点を除いて実施例1と同様に操作し、クロロスルホン化ポリエチレンラテックスを製造した。
各実施例および比較例に関し、クロロスルホン化ポリエチレンラテックスを製造する過程において調製した乳濁液と最終的に得られたクロロスルホン化ポリエチレンラテックスの平均粒子径を測定した。また、得られたクロロスルホン化ポリエチレンラテックスの機械的安定性を評価した。さらに、各実施例および比較例において製造したクロロスルホン化ポリエチレンラテックスを用いてRFL接着剤を調製し、その接着力を評価した。測定方法および評価方法は次の通りである。結果を表1に示す。
レーザー回折式粒度分布測定装置(株式会社島津製作所の商品名「SALD-2000J」)を用い、乳濁液とラテックスの平均粒子径を測定した。なお、ここでの平均粒子径は、直径1μmの球と同じ回折、散乱光のパターンを示す被測定粒子は、その形状に関わらず粒子径が1μmであるものと見なして算出した値である。
マーロン安定度試験機(熊谷理機工業株式会社製)を用い、ラテックスに荷重と攪拌によるせん断応力を負荷させることで凝固物を発生させた。この際、荷重および攪拌回転数は、それぞれ30kgと1,000rpmに設定した。せん断応力を負荷させた後、10分後の凝固物量を測定し、ラテックスの全固形分重量に対しての比率を凝固率として算出した。ここで、凝固率は少なければ少ないほど機械的安定性が良好といえるが、凝固率が1%以下であれば、機械的安定性が優れていると判断できる。
水240gに水酸化ナトリウム0.5gを溶解した水溶液を調製し、これにレゾルシン11gと37%ホルマリン16gとを混合して溶解した。この溶液を30℃で5時間保持し、レゾルシン-ホルムアルデヒド樹脂水性液を得た。得られたレゾルシン-ホルムアルデヒド樹脂水性液25.2g、実施例または比較例で製造されたクロロスルホン化ポリエチレンラテックス25.2g、水20.8gおよび水酸化カリウム0.01gを混合し、30℃で2時間保持してRFL接着剤を製造した。
評価試験1で剥離強度を測定した後のゴム補強用繊維布帛の表面に付着しているゴムの面積を目視で測定し、布帛の面積に対する付着ゴムの面積の割合(%)をゴム付着量として評価した。ゴム付着量は、大きいほどEPDMゴムシートの破壊の程度が大きく、ゴム補強用繊維布帛とEPDMゴムシートとの接着力が大きいことを示しており、20%以上であれば良好な接着力と判断することができ、50%以上であれば特に優れた接着力と判断することができる。
*2:濃縮時に粒子が凝集
*2:ジ-n-ブチルジチオカルバミン酸亜鉛(住友化学工業株式会社の商品名「ソクシノールBZ」)
*3:テトラメチルチウラムジスルフィド(大内新興化学工業株式会社の商品名「ノクセラーTTP」)
*4:2-メルカプトベンゾチアゾール(住友化学工業株式会社の商品名「ソクシノールM」
Claims (15)
- 前記クロロスルホン化ポリエチレン100質量部に対し、前記ポリオキシアルキレンアルキルエーテル硫酸塩を0.3~12質量部および前記脂肪酸塩を0.1~2.5質量部含む、請求項1に記載のクロロスルホン化ポリエチレンラテックス。
- ポリビニルピロリドンをさらに含む、請求項1に記載のクロロスルホン化ポリエチレンラテックス。
- 前記クロロスルホン化ポリエチレン100質量部に対し、前記ポリオキシアルキレンアルキルエーテル硫酸塩を0.3~12質量部、前記脂肪酸塩を0.1~2.5質量部および前記ポリビニルピロリドンを0.01~10質量部含む、請求項3に記載のクロロスルホン化ポリエチレンラテックス。
- 前記ポリオキシアルキレンアルキルエーテル硫酸塩は、ポリオキシエチレンラウリルエーテル硫酸ナトリウム、ポリオキシエチレントリデシルエーテル硫酸ナトリウム、ポリオキシエチレンミリスチルエーテル硫酸ナトリウム、ポリオキシプロピレンラウリルエーテル硫酸ナトリウム、ポリオキシプロピレントリデシルエーテル硫酸ナトリウム、ポリオキシエチレンポリオキシプロピレンラウリルエーテル硫酸ナトリウムおよびポリオキシエチレンポリオキシプロピレントリデシルエーテル硫酸ナトリウムからなる群より選ばれた少なくとも1種である、請求項1から4のいずれかに記載のクロロスルホン化ポリエチレンラテックス。
- 前記ポリオキシアルキレンアルキルエーテル硫酸塩は、式(I)においてnが9~35の整数であるポリオキシアルキレンアルキルエーテル硫酸塩(A)と、式(I)においてnが2~8の整数であるポリオキシアルキレンアルキルエーテル硫酸塩(B)とを含む、請求項1から4のいずれかに記載のクロロスルホン化ポリエチレンラテックス。
- 前記ポリオキシアルキレンアルキルエーテル硫酸塩(A)1質量部に対して前記ポリオキシアルキレンアルキルエーテル硫酸塩(B)を0.1~5質量部含む、請求項6に記載のクロロスルホン化ポリエチレンラテックス。
- 前記脂肪酸塩がオレイン酸塩である、請求項1から4のいずれかに記載のクロロスルホン化ポリエチレンラテックス。
- 前記ポリビニルピロリドンは、質量平均分子量が10,000~5,000,000である、請求項3または4に記載のクロロスルホン化ポリエチレンラテックス。
- 前記有機溶媒を除去後の前記乳濁液をろ過膜により濃縮する工程をさらに含む、請求項10に記載のクロロスルホン化ポリエチレンラテックスの製造方法。
- 前記クロロスルホン化ポリエチレン100質量部に対し、前記ポリオキシアルキレンアルキルエーテル硫酸塩を0.3~12質量部および前記脂肪酸塩を0.1~2.5質量部用いる、請求項10または11に記載のクロロスルホン化ポリエチレンラテックスの製造方法。
- 請求項1から4のいずれかに記載のクロロスルホン化ポリエチレンラテックスをラテックス成分として含む、レゾルシン-ホルマリン-ラテックス接着剤。
- 請求項1から4のいずれかに記載のクロロスルホン化ポリエチレンラテックスを材料として用いることで製造された成型品。
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JP2017066401A (ja) * | 2015-09-30 | 2017-04-06 | 日本乳化剤株式会社 | 濡れ性向上剤およびこれを含む樹脂組成物、ならびに親水化コーティング剤 |
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WO2019103133A1 (ja) | 2017-11-27 | 2019-05-31 | 住友精化株式会社 | アニオン性水性分散体及びその製造方法、成形体、接着液、ゴム補強用繊維並びにゴム補強用繊維複合体 |
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JP6185690B1 (ja) * | 2017-02-13 | 2017-08-23 | 日本板硝子株式会社 | ゴム補強用コードの製造方法、ゴム補強用コード及びゴム製品 |
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WO2018146832A1 (ja) * | 2017-02-13 | 2018-08-16 | 日本板硝子株式会社 | ゴム補強用コードの製造方法、ゴム補強用コード及びゴム製品 |
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US20140031464A1 (en) | 2014-01-30 |
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CA2832701A1 (en) | 2012-10-18 |
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TW201247756A (en) | 2012-12-01 |
EP2698398B1 (en) | 2016-01-13 |
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