WO2020175404A1 - 補強繊維及びその製造方法、並びにそれを用いた成形体 - Google Patents
補強繊維及びその製造方法、並びにそれを用いた成形体 Download PDFInfo
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- WO2020175404A1 WO2020175404A1 PCT/JP2020/007220 JP2020007220W WO2020175404A1 WO 2020175404 A1 WO2020175404 A1 WO 2020175404A1 JP 2020007220 W JP2020007220 W JP 2020007220W WO 2020175404 A1 WO2020175404 A1 WO 2020175404A1
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- Prior art keywords
- rubber
- conjugated gen
- fiber
- mass
- reinforcing fiber
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- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 235000013875 sodium salts of fatty acid Nutrition 0.000 description 1
- JMHCCAYJTTWMCX-QWPJCUCISA-M sodium;(2s)-2-amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoate;pentahydrate Chemical compound O.O.O.O.O.[Na+].IC1=CC(C[C@H](N)C([O-])=O)=CC(I)=C1OC1=CC(I)=C(O)C(I)=C1 JMHCCAYJTTWMCX-QWPJCUCISA-M 0.000 description 1
- 239000012453 solvate Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- IHCDKJZZFOUARO-UHFFFAOYSA-M sulfacetamide sodium Chemical compound O.[Na+].CC(=O)[N-]S(=O)(=O)C1=CC=C(N)C=C1 IHCDKJZZFOUARO-UHFFFAOYSA-M 0.000 description 1
- QAZLUNIWYYOJPC-UHFFFAOYSA-M sulfenamide Chemical compound [Cl-].COC1=C(C)C=[N+]2C3=NC4=CC=C(OC)C=C4N3SCC2=C1C QAZLUNIWYYOJPC-UHFFFAOYSA-M 0.000 description 1
- 125000004089 sulfido group Chemical group [S-]* 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
- FEJQDYXPAQVBCA-UHFFFAOYSA-J tetrasodium;ethane-1,2-diamine;tetraacetate Chemical compound [Na+].[Na+].[Na+].[Na+].CC([O-])=O.CC([O-])=O.CC([O-])=O.CC([O-])=O.NCCN FEJQDYXPAQVBCA-UHFFFAOYSA-J 0.000 description 1
- 239000006234 thermal black Substances 0.000 description 1
- 238000001757 thermogravimetry curve Methods 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- XSIGLRIVXRKQRA-UHFFFAOYSA-N triethoxysilylmethanethiol Chemical compound CCO[Si](CS)(OCC)OCC XSIGLRIVXRKQRA-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 description 1
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 description 1
- 235000012141 vanillin Nutrition 0.000 description 1
- PJDFLNIOAUIZSL-UHFFFAOYSA-N vigabatrin Chemical compound C=CC(N)CCC(O)=O PJDFLNIOAUIZSL-UHFFFAOYSA-N 0.000 description 1
- 229960005318 vigabatrin Drugs 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/246—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs using polymer based synthetic fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/24—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
- C08J5/249—Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs characterised by the additives used in the prepolymer mixture
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/447—Yarns or threads for specific use in general industrial applications, e.g. as filters or reinforcement
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/48—Tyre cords
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/02—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2307/00—Characterised by the use of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/06—Copolymers with styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
Definitions
- the present invention relates to a reinforcing fiber having excellent adhesiveness to rubber, a method for producing the same, and a molded product using the same.
- Patent Document 3 proposes a technique using an adhesive containing an adhesive compound having an unsaturated carbon bond and an epoxy group which reacts with a vulcanizing agent used for vulcanizing rubber.
- Patent Document 4 discloses an adhesive composition for an organic fiber cord containing (blocked) isocyanate compound and/or amine curing agent, epoxy compound (Mitsumi), and rubber latex ( ⁇ ), and not containing resorcin and formaldehyde. Adhesion methods using objects have been proposed.
- Patent Document 5 proposes a technology for separating and reducing the diameter by a mechanical shearing force as a rubber-reinforcing fiber to which liquid rubber is attached.
- Patent Document 1 Japanese Patent Laid-Open No. 5 4-4 9 7 6
- Patent Document 2 Japanese Patent Laid-Open No. 5-8-2370
- Patent Document 3 Japanese Patent Laid-Open No. 20 1 1 — 1 1 1 5 6 3
- Patent Document 4 International Publication No. 2 0 1 0/1 2 5 9 9 2
- Patent Document 5 Japanese Patent Laid-Open No. 10-1950 5208
- the method using the adhesive described in Patent Document 4 has an adhesive force equal to or higher than that of the conventional method using [3 ⁇ 4!_], but forms an adhesive layer on the surface of the organic fiber cord. after, it is necessary to heat treatment substantially high temperature (1 8 0 ° ⁇ and 2 4 0 ° ⁇ below. when performing such process, the organic fibers such as eight fibers and Mihinoto fiber When used as a reinforcing fiber, there was a risk that the performance as a reinforcing fiber would deteriorate due to deterioration.
- Patent Document 5 improves the dispersibility of the reinforcing fiber when kneading with the rubber by adhering the liquid rubber to the short fiber for reinforcing the rubber, thereby improving the reinforcing property.
- a highly viscous liquid rubber is attached to the surface of the fiber, there is a problem that the holding mouth roller through which the fiber passes is easily contaminated, resulting in a decrease in productivity.
- An object of the present invention has been made in view of the above conventional problems, and ⁇ 0 2020/175 404 3 ⁇ (: 171? 2020 /007220
- a reinforcing fiber using an adhesive component containing neither syn nor formaldehyde which has excellent adhesiveness to rubber and can be efficiently produced while suppressing contamination of production equipment, and a production method thereof, and It is to provide a molded product using the same.
- the present invention relates to the following [1] to [18].
- At least a part of the surface of the fiber has an adhesive component containing a conjugated gen-based rubber and oil, and the vapor pressure of the oil at 20 ° is 10 3 or less. Reinforcing fiber.
- fibers are one or more hydrophilic fibers selected from polyvinyl alcohol fibers, regenerated cellulose fibers, and fibers obtained by hydrophilizing the surface of hydrophobic fibers. fiber.
- the conjugated gen-based rubber contains a monomer unit derived from at least one selected from butadiene, isoprene, and phenylene in the molecule, [1] to [4] Reinforcing fiber.
- the melt viscosity at 3 8 ° ⁇ of conjugated diene-based rubber is 4, 0 0 0 3 3 below, the reinforcing fiber according to any one of [1] to [5].
- the hydrogen-bonding functional group is a hydroxy group, an aldehyde group, an acetalization product of an aldehyde group, a carboxy group, a salt of a carboxy group, an esterification product of a carboxy group, an acid anhydride of a carboxy group,
- the adhesion amount of the adhesive component is 0.01 part by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the fibers, and [1] to [9] above. Reinforcement fiber.
- the molded product is a tire, a belt or a hose, [16] or
- the present invention is a reinforcing fiber that uses an adhesive component that does not contain resorcin and formaldehyde, and has excellent adhesiveness with rubber and can be efficiently produced while suppressing contamination of production equipment. It is possible to provide a possible reinforcing fiber, a method for producing the same, and a molded product using the same.
- the reinforcing fiber of the present invention has an adhesive component containing a conjugated gen rubber and an oil on at least a part of the surface of the fiber, and the vapor pressure of the oil at 20 ° is not more than 10 3. It is a feature.
- the present invention since a conjugated gen-based rubber is used as an adhesive component, it is possible to obtain a reinforcing fiber having excellent adhesiveness with rubber. Further, in the present invention, since the conjugated gen-based rubber and the oil having a vapor pressure at 20° ⁇ of 103 or less are used together, the fiber convergence is improved, and the adhesive component is added to the surface of the fiber. Since the oil does not volatilize for a long time even after being applied to, it has excellent abrasion resistance and further improves adhesion because it is less likely to cause uneven coating of the adhesive component. Further, since the passage of the manufacturing equipment is improved during the manufacturing, the pollution of the manufacturing equipment can be suppressed and the manufacturing efficiency is improved.
- the present invention does not require a heating step for resinification as compared with the conventional technique using !_, and further removes water etc. as compared with the conventional technique using a solvent such as water as a diluent.
- the evaporation step of is not required. Therefore, it is possible to efficiently manufacture with simple equipment compared to the conventional one, and it is environmentally friendly.
- “having at least a part of the surface of the fiber an adhesive component containing a conjugated gen rubber and oil” means that at least a part of the surface of the fiber, for example, as a film or layer. It may be an aspect in which an adhesive component is present, or an aspect in which the raw material of the fiber contains the adhesive component and the adhesive component is present on a part of the surface of the fiber itself.
- the adhesive component used in the present invention is formaldehyde, which is harmful to the human body. ⁇ 0 2020/175 404 6 ⁇ (: 171? 2020 /007220
- the adhesive component contains a resin made of formaldehyde as a raw material
- examples of the resin include resorcin/formaldehyde resin, phenol/formaldehyde resin, melamine/formaldehyde resin and derivatives thereof.
- the formaldehyde component is contained in the adhesive component, the content thereof is preferably 10 parts by mass or less, more preferably 5 parts by mass or less, and 3 parts by mass or less with respect to 100 parts by mass of the conjugated gen rubber.
- the content of formaldehyde is after extracting the adhesive component from the reinforcing fiber with a solvent such as toluene, It can be measured by using !_ ⁇ etc.
- the conjugated gen-based rubber used in the present invention contains at least a monomer unit derived from a conjugated gen (hereinafter also referred to as a “conjugated gen unit”) in the molecule. It is preferable that the monomer unit contains 50 mol% or more of the monomer unit derived from the conjugated gen.
- conjugated gen monomer examples include butadiene, 2-methyl-1,
- Examples include 7-octatriene, /3-farnesene (hereinafter also referred to as “farnesene”), myrcene, and chloroprene. These conjugated gens are
- the conjugated gen-based rubber more preferably has a monomer unit derived from at least one selected from butadiene, isoprene, and farnesene.
- the conjugated gen-based rubber used in the present invention may contain units derived from a monomer other than the above-mentioned conjugated gen monomer as long as it does not inhibit adhesion. ⁇ 0 2020/175 404 7 ⁇ (: 171-1? 2020/007220
- Other monomers include copolymerizable ethylenically unsaturated monomers and aromatic vinyl compounds.
- Examples of the ethylenically unsaturated monomer include olefins such as ethylene, 1-butene, and isoptylene.
- aromatic vinyl compound examples include styrene, ⁇ _methylstyrene, 2-methylstyrene, 3-methylstyrene, 4-methylstyrene, 4-propylstyrene, 4_1: _butylstyrene, 4-cyclohexylstyrene, 4-dodecylstyrene, 2,4-dimethylstyrene, 2,4-diisopropylstyrene, 2,4,6-trimethylstyrene, 2-ethyl-4-benzylstyrene, 4-(phenylputyl)styrene, 1-vinylnaphthalene, 2 —Vinylnaphthalene, vinylanthracene, 1 ⁇ 1, 1 ⁇ 1-diethyl-4-aminoethylstyrene, vinylpyridine, 4-methoxystyrene, monochlorostyrene, dichlorostyrene,
- the conjugated gen-based rubber contains a monomer unit derived from a monomer other than the conjugated gen monomer, its content is preferably 30 mol% or less, more preferably 10 mol% or less, It is more preferably 5 mol% or less.
- the conjugated gen-based rubber used in the present invention is preferably a modified conjugated gen-based rubber having a hydrogen-bonding functional group in a part of the conjugated gen-based rubber, and at least a part of the polymer chain is A modified conjugated gen-based rubber containing a conjugated gen unit and having a hydrogen-bonding functional group at the side chain or terminal of the polymer chain is more preferable.
- the modified conjugated gen-based rubber is used as the conjugated gen-based rubber
- the modified syngeneic gen-based rubber interacts with each of the adherend rubber and the fiber, so that both can be bonded.
- the modified conjugated gen rubber and the adhered rubber are vulcanized to form a covalent bond, a strong cohesive force is generated, and thus the adhesiveness is further improved.
- the hydrogen-bonding functional groups contained in the modified conjugated gen-based rubber form hydrogen bonds with the hydrophilic fibers to bond them. ⁇ 0 2020/175 404 8 ⁇ (: 171? 2020 /007220
- hydrogen bond refers to a hydrogen atom (donor) which is bonded to an atom having a high electronegativity ( ⁇ , 1 ⁇ 1, 3, etc.) and is electrically positively polarized.
- donor hydrogen atom
- acceptor Means a binding interaction formed between an electronegative atom having a lone pair of electrons (acceptor _).
- the "hydrogen-bonding functional group” is a functional group capable of functioning as a donor and an acceptor in the hydrogen bond. Specifically, hydroxy group, ether group, mercapto group, carboxy group, carbonyl group, aldehyde group, amino group, imino group, imidazole group, urethane group, amide group, urea group, isocyanate group, nitryl group, silanol. Groups and derivatives thereof. Examples of the aldehyde group derivative include its acetalized product. Derivatives of the carboxy group include salts thereof, esterified products thereof, amidated products thereof, and acid anhydrides thereof. Examples of the silanol group derivative include its esterified product.
- examples of the carboxy group include a group derived from monocarboxylic acid and a group derived from dicarboxylic acid.
- hydroxy group, carboxy group, carbonyl group, salt of carboxy group, ester of carboxy group, acid anhydride of carboxy group At least one selected from the group consisting of a carboxy group, a carboxy group esterified product and a carboxy group acid anhydride is more preferred, and a maleic anhydride esterified product and a maleic anhydride-derived functional group are preferred. More preferred are groups.
- the number of hydrogen-bonding functional groups in the modified conjugated gen-based rubber is preferably 2 or more, more preferably 3 or more, on average per molecule, from the viewpoint of obtaining a reinforcing fiber having excellent rubber adhesiveness. More preferably, it is 4 or more. Also, the hydrogen bond ⁇ 0 2020/175 404 9 ⁇ (: 171? 2020 /007220
- the number of functional groups is an average per molecule, preferably 80 or less, more preferably 40 or less, from the viewpoint of controlling the viscosity of the modified conjugated gen-based rubber in an appropriate range and improving handleability.
- the number is preferably 30 or less, more preferably 20 or less, still more preferably 10 or less.
- the average number of hydrogen-bonding functional groups per molecule of the modified conjugated gen-based rubber is the equivalent of the hydrogen-bonding functional groups of the modified co-functional gen-based rubber (9/69) and the number average molecular weight IV! n in terms of styrene. It is calculated from the following formula.
- the equivalent of the hydrogen-bonding functional group of the modified conjugated gen-based rubber is the mass of the synergistic gen bonded to one hydrogen-bonding functional group and the mass of other monomer other than the conjugated gen contained as necessary. means.
- Average number of hydrogen-bonding functional groups per molecule [(Number average molecular weight ( Mn )) / (Molecular weight of styrene unit) X (Conjugating gen and other monomer units other than conjugated gen, if necessary) Of the hydrogen-bonding functional group)
- the method of calculating the equivalent of the hydrogen-bonding functional group can be appropriately selected depending on the type of the hydrogen-bonding functional group.
- Examples of the method for obtaining the modified conjugated gen rubber include a method obtained by adding a modified compound to a polymerized product of a conjugated gen monomer (hereinafter, also referred to as "manufacturing method (1)”), a conjugated A method obtained by oxidizing a gen polymer (hereinafter, also referred to as “production method (2)”), a method obtained by copolymerizing a conjugated gen monomer and a radically polymerizable compound having a hydrogen-bonding functional group.
- Production Method (3) reacting with a polymerization active terminal before adding a polymerization terminator to a polymerized product of an unmodified conjugated diene monomer having a polymerization active terminal.
- a method of adding the modified compound to be obtained (hereinafter, also referred to as “production method (4)”) can be mentioned.
- the production method (1) is a method in which a modified compound is added to a polymerized product of a conjugated gen monomer, that is, an unmodified conjugated gen rubber (hereinafter, also referred to as “unmodified conjugated gen rubber”). ⁇ 0 2020/175 404 10 ⁇ (: 171? 2020 /007220
- the unmodified conjugated gen-based rubber can be obtained by polymerizing a conjugated gen and, if necessary, another monomer other than the conjugated gen by an emulsion polymerization method, a solution polymerization method or the like.
- a known method or a method similar to the known method can be applied.
- solvent examples include, butane, n-pentane, isopentane, n-hexane, _ Aliphatic hydrocarbons such as heptane and isooctane; alicyclic hydrocarbons such as cyclopentane, cyclohexane and methylcyclopentane; aromatic hydrocarbons such as benzene, toluene and xylene.
- anion-polymerizable active metal examples include alkali metals such as lithium, sodium and potassium; alkaline earth metals such as beryllium, magnesium, calcium, strontium and barium; lanthanide-based metals such as lanthanum and neodymium. Examples include rare earth metals and the like. Among these anionic polymerizable active metals, alkali metals and alkaline earth metals are preferable, and alkali metals are more preferable.
- the active metal compound capable of anionic polymerization is preferably an organic alkali metal compound.
- the organic alkali metal compound include, for example, methyllithium, ethyllithium, 1-1_butyllithium, 360-butyllithium, 1;-butyllithium, hexyllithium, phenyllithium, stilbenlithium, and other organic monolithium compounds; Dilithiomethane, dilithionaphthalene, 1, 4-dilithiobutane, 1, 4-dilithio _ 2 -ethylcyclohexane, 1, 3,
- Polyfunctional organic lithium compounds such as 5-trilithiobenzene; sodium naphthalenes, potassium naphthalenes and the like.
- organic alkali metal compounds organic lithium compounds are preferable, and organic monolithium compounds are more preferable.
- the amount of the above-mentioned organic alkali metal compound used is the target unmodified conjugated gen-based compound. ⁇ 0 2020/175 404 1 1 ⁇ (: 171? 2020 /007220
- the organic alkali metal compound may be used as an organic alkali metal amide by reacting with a secondary amine such as dibutylamine, dihexylamine or dibenzylamine.
- the polar compound is usually used in anionic polymerization for controlling the microstructure of the conjugated diene site without deactivating the reaction.
- polar compounds include ether compounds such as dibutylether, tetrahydrofuran, ethylenglycol ethylether, and 2,2-di(2-tetrahydrofuryl)propane; tertiary amines such as tetramethylethylenediamine and trimethylamine.
- the polar compound is usually used in an amount of 0.001 to 100 mol per mol of the organic alkali metal compound.
- the temperature of the solution polymerization is usually one 8 0 to 1 5 0 ° ⁇ range, preferably ⁇ _ ⁇ 1 0 0 ° ⁇ , more preferably in the range of 1 ⁇ _ ⁇ 9 0 ° ⁇ .
- the polymerization mode may be either batchwise or continuous.
- the polymerization reaction can be stopped by adding a polymerization terminator.
- the polymerization terminator include alcohols such as methanol and isopropanol.
- the unmodified conjugated gen-based rubber can be isolated by pouring the obtained polymerization reaction solution into a poor solvent such as methanol to precipitate a polymerized product, or washing the polymerization reaction solution with water, separating and drying. ..
- the solution superposition method is preferable as the method for producing the unmodified conjugated gen rubber.
- a known method or a method according to a known method can be applied.
- a monomer containing a predetermined amount of conjugated gen is emulsified and dispersed in the presence of an emulsifier, and emulsion-polymerized with a radial polymerization initiator.
- emulsifiers include long-chain fatty acid salts having 10 or more carbon atoms and rosin acid salts. ⁇ 0 2020/175 404 12 ⁇ (: 171? 2020 /007220
- long-chain fatty acid salts include potassium or sodium salts of fatty acids such as capric acid, lauric acid, myristic acid, palmitic acid, oleic acid and stearic acid.
- Water is usually used as the dispersion solvent, and may contain a water-soluble organic solvent such as methanol or ethanol, as long as the stability during polymerization is not impaired.
- a water-soluble organic solvent such as methanol or ethanol
- the radical polymerization initiator include persulfates such as ammonium persulfate and potassium persulfate, organic peroxides, hydrogen peroxide and the like.
- a chain transfer agent may be used to adjust the molecular weight of the resulting unmodified conjugated gen rubber.
- the chain transfer agent for example, Mercaptans such as dodecyl mercaptan and door dodecyl mercaptan; carbon tetrachloride, thioglycolic acid, diterpenes, evening pinolenes, a-terbinene, ⁇ methyl styrene dimer and the like can be mentioned.
- the temperature of the emulsion polymerization can be appropriately set depending on the kind of the radical polymerization initiator to be used, etc., but is usually in the range of 0 to 100 ° , preferably in the range of 0 to 60 ° .
- the polymerization mode may be either continuous polymerization or batch polymerization.
- the polymerization reaction can be stopped by adding a polymerization terminator.
- the polymerization terminator include amine compounds such as isopropylhydroxylamine, diethylhydroxylamine and hydroxylamine, quinone compounds such as hydroquinone and benzoquinone, and sodium nitrite.
- an antioxidant may be added if necessary.
- unreacted monomers are removed from the obtained latex as needed, and then salts such as sodium chloride, calcium chloride and potassium chloride are used as a coagulant, and nitric acid and sulfuric acid are added as necessary.
- the coagulation system 1 to 1 to a predetermined value by adding an acid such as the above, the polymerization product is solidified, and then the dispersion solvent is separated to recover the polymerization product. Then, after washing with water, dehydration and drying, an unmodified conjugated gen-based rubber is obtained.
- the latex and the extending oil made into an emulsion dispersion may be mixed in advance and recovered as an oil-extended unmodified conjugated gen rubber.
- the modified compound used in the production method (1) is not particularly limited, but those having a hydrogen-bonding functional group are preferable from the viewpoint of improving the adhesiveness of the reinforcing fiber.
- the hydrogen-bonding functional group are the same as those mentioned above. Among them, amino group, imidazole group, urea group, hydroxy group, mercapto group, silanol group, aldehyde group, carboxy group and derivatives thereof are preferable from the viewpoint of the strength of hydrogen bonding.
- As the derivative of the carboxy group its salt, its esterified product, its amidated product, or its acid anhydride is preferable.
- These modified compounds having a hydrogen-bonding functional group may be used alone or in combination of two or more.
- Examples of the modified compound include unsaturated carboxylic acids such as maleic acid, fumaric acid, citraconic acid, and itaconic acid; maleic anhydride, citraconic anhydride, 2,3-dimethylmaleic anhydride, and itaconic anhydride.
- unsaturated carboxylic acid anhydrides Esters of maleic acid esters, fumaric acid esters, citraconic acid esters, itaconic acid esters, etc.
- unsaturated carboxylic acid esters maleic acid amides, fumaric acid amides, citraconic acid amides, itacone Unsaturated carboxylic acid amides such as acid amides; maleic acid imides, fumaric acid imides, citraconic acid imides, itaconic acid imides and other unsaturated carboxylic acid amides; vinyltrimethoxysilane, amethacryloxypropyl Trimethoxysilane, mercaptomethylmethyl jetoxysilane, mercaptomethyltriethoxysilane, 2-mercaptoethyl trimethoxysilane, 2-mercaptoethyl triethyloxysilane, 2-mercaptoethylmethoxydimethylsilane, 2-mercaptoethylethyloxydimethysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltri
- the amount of the modified compound used is preferably 0.1 to 100 parts by mass, more preferably 0.5 to 50 parts by mass, relative to 100 parts by mass of the unmodified conjugated gen rubber. More preferably, it is 1 to 30 parts by mass.
- reaction temperature is preferably in the range of 0 to 200°°, more preferably in the range of 50 to 200°°.
- a modifying compound capable of reacting with the functional group is further added to add another hydrogen-bonding functional group in the polymer. May be introduced into.
- a compound having a hydroxyl group such as 2-hydroxyethyl methacrylate or methanol after grafting maleic anhydride to an unmodified conjugated gen rubber obtained by riving anion polymerization
- a method of reacting a compound such as water A method of reacting a compound such as water.
- the addition amount of the modifying compound in the modified conjugated gen rubber is preferably 0.5 to 40 parts by mass, and 1 to 30 parts by mass with respect to 100 parts by mass of the unmodified conjugated gen rubber. More preferably, 1.5 to 20 parts by mass is still more preferable.
- the amount of the modified compound added to the modified conjugated rubber can also be calculated based on the acid value of the modified compound, and various analytical instruments such as infrared spectroscopy and nuclear magnetic resonance spectroscopy can be used. You can also ask.
- the method of adding the modified compound to the unmodified conjugated gen-based rubber is not particularly limited, and examples thereof include liquid unmodified conjugated gen-based rubber, unsaturated carboxylic acid, unsaturated carboxylic acid derivative, and silane compound.
- One or more modified compounds selected from the above, and a radical generator, if necessary, are added, and the mixture is heated in the presence or absence of an organic solvent.
- the radical generator used is not particularly limited, and commercially available organic peroxides, azo compounds, hydrogen peroxide and the like can be used.
- organic solvent used in the above method generally, a hydrocarbon solvent and a halogenated hydrocarbon solvent are mentioned.
- a hydrocarbon solvent such as xylene (:171? 2020/007220) is preferable.
- an antioxidant when carrying out the reaction of adding the modified compound by the above method, an antioxidant may be added from the viewpoint of suppressing side reactions.
- an antioxidant may be added from the viewpoint of suppressing side reactions.
- the anti-aging agent a commercially available one can be used. For example, butylated hydroxytoluene (1 to 1)
- the amount of the antioxidant added is preferably 0.01 to 100 parts by mass, more preferably 0.05 to 5 parts by mass, based on 100 parts by mass of the unmodified conjugated gen rubber.
- the amount of the antioxidant added is within the above range, side reactions can be suppressed, and the modified conjugated gen-based rubber can be obtained with good yield.
- the production method (2) there is a method of obtaining an oxidized conjugated gen rubber having a functional group or a bond containing oxygen generated in the molecule by an oxidation reaction by oxidizing the conjugated gen rubber as a raw material.
- the functional group or bond include a hydroxy group, an aldehyde group, a carbonyl group, a carboxy group, and an ether bond.
- a method of oxidizing the raw material conjugated gen rubber As a method of oxidizing the raw material conjugated gen rubber, a method of heat treatment at a temperature equal to or higher than the oxidation temperature (hereinafter also referred to as “manufacturing method (2 _ 1) ”), and irradiation with light having an absorption wavelength of the raw material conjugated gen rubber is performed. Therefore, a method of activating it to react with oxygen (hereinafter also referred to as “production method (2-2)”) and the like can be mentioned. Among them, the method (manufacturing method (2 — 1)) obtained by heat-treating the raw material conjugated gen-based rubber at a temperature equal to or higher than the oxidation temperature is preferable.
- the step of carrying out the oxidation reaction of the conjugated gen-based rubber is not particularly limited, and may be performed before mixing the conjugated gen-based rubber and oil, or after mixing the conjugated gen-based rubber and oil. Alternatively, it may be carried out after the conjugated gen rubber and the oil are mixed and attached to the fiber.
- the manufacturing method (2 _ 1) is to heat the raw material conjugated gen rubber at a temperature higher than the oxidation temperature. ⁇ 0 2020/175 404 16 ⁇ (: 171? 2020 /007220
- the heat treatment is performed in an atmosphere containing oxygen, preferably in an air atmosphere.
- the temperature of the heat treatment is not particularly limited as long as it is a temperature at which the raw material conjugated gen rubber is oxidized, but from the viewpoint of increasing the reaction rate of oxidation and improving productivity, it is preferably 150 ° C. or higher, and 170 ° More than ° ⁇ is more preferable, and more than 190° is even more preferable. If oxidation of the raw material conjugated diene rubber as described later Ru place at the surface of the hydrophilic fiber, from the viewpoint of preventing the deterioration of the fibers, preferably 2 4 0 ° ⁇ less, more preferably 2 2 0 ° ⁇ less ..
- the heat treatment time is not particularly limited as long as it does not deteriorate the raw material conjugated gen rubber, but is preferably 30 minutes or less, more preferably 20 minutes or less.
- the temperature required for the oxidation reaction can be lowered by adding a heat radical generator to the raw material conjugated gen rubber.
- thermal radical generator examples include peroxides, azo compounds, and redox type initiators. Among them, peroxides are preferable from the viewpoint that the heat radical generator is bonded to the conjugated gen rubber and the structure containing oxygen is added to the conjugated gen rubber.
- peroxide examples include 1-butyl hydroperoxide, cumene hydroperoxide, butyl peroxyacetate, peroxybenzoic acid 1;-butyl, peroxyoctanoic acid 1; Butyrate 1:-Putyl, lauroyl peroxide, peroxypivalate 1:-amyl, peroxypivalate 1: _butyl, dicumyl peroxide, benzoyl peroxide, potassium persulfate, ammonium persulfate and the like.
- azo compound examples include, for example, azobisisoptyronitrile (Hachiro Minoru).
- thermal radical generator may be used alone or in combination of two or more.
- a redox-based initiator may be used as the thermal radical generator.
- the redox-based initiator include a combination of persulfated salt, sodium acid sulfite and ferrous sulfate, a combination of I-butyl hydrido peroxide, sodium acid sulfite and ferrous sulfate, Examples include combinations of dropoperoxide, ferrous sulfate, ethylenediamine sodium tetraacetate, and sodium formaldehyde sulfoxylate.
- the production method (2-2) is a method of activating by irradiation with light having the absorption wavelength of the raw material conjugated gen-based rubber to react with oxygen.
- the production method (2 — 2) is performed in an atmosphere containing oxygen, preferably in an air atmosphere.
- the wavelength of the light used is not particularly limited as long as it is a wavelength at which the raw material conjugated gen-based rubber absorbs and causes a radical reaction, but ultraviolet light which is strongly absorbed by the raw material conjugated gen-based rubber is preferable.
- the irradiation amount of light necessary for the oxidation reaction can be reduced.
- Examples of the photoradical generator include acetophenone, acetophenone benzyl ketal, 1-hydroxycyclohexyl phenyl ketone, 2,
- Examples of the production method (3) include a method in which a conjugated gen monomer and a radical-polymerizable compound having a hydrogen-bonding functional group are subjected to random copolymerization, block copolymerization or graft copolymerization by a known method.
- the radical-polymerizable compound having a hydrogen-bonding functional group used in the production method (3) is not particularly limited as long as it is a compound having both a hydrogen-bonding functional group and a reactive multiple bond in the molecule.
- aldehydes having multiple bonds examples of the aldehyde having a reactive carbon_carbon double bond include, for example, acrolein, methacrolein, and crotolein. ⁇ 0 2020/175 404 19 ⁇ (: 171-1? 2020 /007220
- Alkenal preferably alkenal having 3 to 25 carbon atoms; alkenalal having 5 to 30 carbon atoms such as 2,4-pentagenal, 2,4-hexagenal, 2,6-nonagenal, and citral Alkagenal with 5 to 25 carbon atoms; Alkatrienal with 7 to 30 carbon atoms, such as linolenic aldehyde and ereostearinaldehyde, preferably Alkatrienal with 7 to 25 carbon atoms; Stearidon aldehyde, Alkatetraenal having 9 to 30 carbon atoms, such as arachidon aldehyde, preferably alkatetraenal having 9 to 25 carbon atoms; alkapenta having 11 to 30 carbon atoms, such as eicosapentaenaldehyde Unsaturated aldehydes such as enar, preferably alkapentaenal having 11 to 25 carbon atoms; The aldehydes having
- the acetalized products of aldehydes having multiple bonds include: acetalized products of aldehydes, specifically 2-methyl-3. —Butenal acetalized form 3—(1 ,3—dioxalan-2-yl)-one 3-methyl-! one ⁇ 0 2020/175 404 20 ⁇ (: 17 2020/007220 Propene, 3-methyl-3-butenal acetalized form 3— (1,
- the aldehydes having a reactive carbon-carbon triple bond and the acetalized forms thereof include propiolaldehyde, 2-butyne-1-al, and Examples thereof include aldehydes having a carbon-carbon triple bond such as 2-pentyne-1-al, and acetalized products of the aldehyde.
- aldehydes having a reactive carbon-carbon double bond are preferable, and examples thereof include acrolein, methacrolein, crotonaldehyde, 3-butenal, 2 — Methyl-2-butenal, 2-methyl-3-butenal, 2,2-dimethylol 3-butenal, 3-methyl-2-butenal, 3-methyl-3-butenal, 2-pentenal, 2-methyl-2-pentenal, 3 —Pentenal, 3-Methyl-4-pentenal, 4-Pentenal, 4-Methyl-4-pentenal, 2-hexenal, 3-hexenal, 4-hexenal, 5-hexenal, 7-octenal, 2-ethylcrotonaldehyde,
- One or more selected from 3-(dimethylamino)acrolein and 2,4-pentagenal is preferable.
- at least one selected from acrolein, methacrolein, crotonaldehyde, and 3-butenal is more preferable because it has good reactivity during copolymerization.
- the monocarboxylic acid having multiple bonds, the salt of the monocarboxylic acid, the esterified product of the monocarboxylic acid, and the acid anhydride of the monocarboxylic acid include, for example, (meth)acrylic acid, ( (Meth) sodium salt of acrylic acid, (meth) potassium salt of acrylic acid, (meth) methyl acrylate, (meth) ethyl acrylate, (meth) butyl acrylate, (meth) propyl acrylate, (meth) 2-hydroxyethyl acrylate, (meth)acrylic acid 2-hydroxypropyl, (meth)acrylic acid 3-hydroxypropyl, (meth)acrylic ⁇ 0 2020/175404 21 acid (:171?2020/007220 acid 2-hydroxylbutyl, (meth)acrylic acid 3-hydroxylbutyl, (meth)acrylic acid 4-hydroxylbutyl, (meth)vinyl acrylate,
- Pentenoic anhydride 1 Decenoic anhydride, 3-methyl-3-butenoic anhydride, 4-pentenoic anhydride, 2-methyl-4-pentenoic anhydride, and 10-undecenoic anhydride
- Examples thereof include carboxylic acids having a reactive carbon-carbon triple bond and esterified products of the carboxylic acids such as chill, vinyl propiolate, tetrol acid, methyl tetrolate, ethyl tetrolate and vinyl tetrolate.
- (meth)acrylic acid means the generic term of "acrylic acid” and "methacrylic acid.”
- the dicarboxylic acid having a multiple bond, the salt of the dicarboxylic acid, the esterified product of the dicarboxylic acid, and the acid anhydride of the dicarboxylic acid include, for example, maleic acid, sodium maleate salt, and potassium maleate.
- Reactivity of salts methyl maleate, dimethyl maleate, maleic anhydride, itaconic acid, methyl itaconic acid, dimethyl itaconic acid, itaconic anhydride, hymic acid, methyl hymic acid, dimethyl hymic acid, and hymic acid anhydride
- examples thereof include a dicarboxylic acid having a carbon-carbon double bond, a salt of the dicarboxylic acid, an esterified product of the dicarboxylic acid, and an acid anhydride of the dicarboxylic acid.
- a compound having a reactive carbon-carbon double bond is preferable, and among them, since the reactivity at the time of copolymerization is good, (Meth) methyl acrylate, (meth) ethyl acrylate, (meth) acrylate acrylate, (meth) vinyl acrylate, (meth) acrylic anhydride, 2-(trifluoromethyl) acrylate anhydride, cinnamic acid More preferably, one or more selected from anhydrides, crotonic anhydride, methyl maleate, dimethyl maleate, maleic anhydride,
- examples of the amine compound having a reactive carbon_carbon double bond include, for example, allylamine, 3-butenylamine, 4-pentenylamine, 5-hexenylamine, 6-heptenylamine,
- Minostyrene 4-vinylbenzylamine, 2-allylglycine, 3-allylcysteine, Examples thereof include allylalanine, 2-allylaniline, geranylamine, vigabatrin, 4-vinylaniline, and 4-vinyloxyaniline.
- at least one selected from allylamine, 3-butenylamine, and 4-pentenylamine is preferable because it has good reactivity during copolymerization.
- the manufacturing method (4) is a method of reacting an unmodified conjugated gen monomer-containing compound (unmodified conjugated gen-based rubber) having a polymerization active terminal with the polymerization active terminal before adding a polymerization terminator. It is a method of adding a modified compound which can be added.
- the unmodified conjugated gen-based rubber having a polymerization active terminal can be prepared by the same method as in the production method (1), for example, by the emulsion polymerization method, the solution polymerization method, or the like, other than the conjugated gen monomer and, if necessary, other than the conjugated gen. It can be obtained by polymerizing the above monomer.
- Examples of the modified compound that can be used in the production method (4) include, for example, dimethylgetoxysilane, tetramethoxysilane, tetraethoxysilane, 3-aminopropyltriethoxysilane, and tetraglycidyl 1,3-bisaminomethylcyclohexane. , 2, 4-Tolylene diisocyanate, Carbon dioxide, Ethylene oxide, Succinic anhydride, 4, 4'-bis (Jetylamino) Benzophenone, 1 ⁇ !
- the amount of the modified compound used in the production method (4) is preferably, for example, 0.01-1 to 100 relative to the organic alkali metal compound when the polymerization is performed using the organic alkali metal compound. It is in the molar equivalent range.
- the reaction temperature is usually in the range of 180 to 150°, preferably in the range of 0 to 100°, more preferably in the range of 10 to 90°.
- the modified compound was added to the unmodified conjugated gel. ⁇ 02020/175 404 24 ⁇ (: 171? 2020 /007220
- a modifying compound capable of reacting with the functional group may be added to introduce another hydrogen-bonding functional group into the polymer.
- the modified conjugated gen-based rubber contains units derived from a monomer other than the above-mentioned conjugated gen monomer and the radical-polymerizable compound having a hydrogen-bonding functional group as long as it does not hinder the adhesion. You may stay.
- the other monomer include a copolymerizable ethylenically unsaturated monomer and an aromatic vinyl compound. Specific compounds and contents are the same as described above.
- the method for producing the modified conjugated gen-based rubber is not particularly limited, but from the viewpoint of productivity, the production method (1) or (2) or (3) is preferable, and the production method (1) Alternatively, it is more preferable to manufacture by (3), and it is more preferable to manufacture by the manufacturing method (1).
- Weight average molecular weight of conjugated gen rubber Is not particularly limited, but from the viewpoint of improving the adhesiveness, 2,000 or more is preferable, 5,000 or more is more preferable, 10 000 or more is further preferable, 1 5,000 or more is further preferable. , 20,000 or more is more preferable, 25,000 or more is particularly preferable, from the viewpoint of handleability, 150,000 or less is preferable, 120,000 or less is more preferable, 100,000 or less is further preferable, 75,
- 000 or less is more preferable, and 50,000 or less is even more preferable.
- the number average molecular weight (IV! n ) of the conjugated gen rubber is not particularly limited, but from the viewpoint of improving the adhesiveness, it is preferably 2,000 or more, more preferably 5,000 or more, 2,000 or more is more preferable, 15,000 or more is further preferable, 20,000 or more is still more preferable, 25,000 or more is particularly preferable, and from the viewpoint of handleability, 12,000 The following is preferable,
- the conjugated gen rubber and IV! n are the polystyrene-equivalent weight average molecular weight and the polystyrene-reduced weight average molecular weight obtained from the measurement of gel permeation chromatography ( ⁇ ). ⁇ 02020/175 404 25 ⁇ (: 171? 2020 /007220
- Molecular weight distribution of conjugated gen rubber Is preferably 1.0 to 5.0, more preferably 1.0 to 3.0, even more preferably 1.0 to 2.0, even more preferably 1.0 to 1.5, and! 0.0 to 1.3 is particularly preferable.
- Mn When Mn is within the above range, the viscosity of the conjugated gen-based rubber varies little, and the handling is easy.
- the molecular weight distribution (Mw/Mn) means the ratio of the weight average molecular weight (IV!%)/number average molecular weight (IV! II) in terms of standard polystyrene determined by the measurement of 3.
- the conjugated gen rubber is preferably liquid.
- liquid means that the melt viscosity of the conjugated gen-based rubber measured at 38 ° is not more than 4,000 to 33.
- the melt viscosity is ⁇ . 3 or more is preferable, 3 or more is more preferable, 10 3 3 or more is further preferable, 30 3 3 or more is further preferable, 50 3'3 or more is further preferable, and from the viewpoint of handleability, 2,000 3 3 or less is preferable. It is preferably 1,500 3 3 or less, more preferably 1 ,000 3 3 or less.
- the melt viscosity of the conjugated gen rubber means the viscosity measured at 38 ° using a Brookfield viscometer (Mitsumi viscometer).
- the glass transition temperature of the conjugated gen-based rubber (9) varies depending on the vinyl content of the conjugated gen unit, the type of conjugated gen, the content of units derived from monomers other than the conjugated gen, and the like. However, 1100 to 100° is preferred, 1100 to 110° is more preferred, and 100 to 120° is still more preferred.
- the tab 9 is in the above range, the increase in viscosity can be suppressed and the handling becomes easy.
- an oil whose vapor pressure at 20 ° is less than 103 is used. ⁇ 0 2020/175 404 26 ⁇ (: 171? 2020 /007220
- the vapor pressure of the oil at 20° is less than 103, the oil does not volatilize for a long time even after the adhesive component is applied to the surface of the fiber, so that the abrasion resistance of the reinforcing fiber is improved.
- the adhesiveness of the adhesive component can be improved because the coating unevenness of the adhesive component is unlikely to occur, and further, the contamination of the manufacturing equipment during manufacturing can be suppressed.
- the vapor pressure of oil at 200 ° is preferably 5 3 or less, more preferably 13 or less, further preferably 0.13 or less, still more preferably 0.013 or less. In the present invention, it is preferable to use a so-called non-volatile oil having a vapor pressure at 20° of 10 3 or less.
- the vapor pressure of oil at 20 ° is based on the measurement value measured by the gas flow method by Antoine (8 11 1: 0 ⁇ ). ⁇ ) The value calculated by the optimum curve obtained by applying the formula.
- the oil having a vapor pressure of 10 3 or less at 20°O that can be used in the present invention is not particularly limited as long as it is compatible with the conjugated gen-based rubber.
- Natural oils include, for example, mineral oils and vegetable oils.
- mineral oil paraffinic mineral oil, aromatic mineral oil and naphthenic mineral oil obtained by ordinary refining methods such as solvent refining, hydrogenation refining, and the Fischer-Tropche process are used.
- wax gas tree wax
- paraffin-based mineral oils include the “Diana Process Oil” series manufactured by Idemitsu Kosan Co., Ltd. Examples include the “Super Oil” series manufactured by Energy Co., Ltd.
- vegetable oils examples include flaxseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, southern oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, large oil. Soybean oil, peanut oil, cottonseed oil, coconut oil, palm kernel oil, rice bran oil, etc. ⁇ 0 2020/175 404 27 ⁇ (: 171? 2020 /007220
- Examples of synthetic oils include hydrocarbon synthetic oils, ester synthetic oils, ether synthetic oils and the like.
- Examples of the hydrocarbon synthetic oil include polybutene, polyisobutylene, 1-octene oligomer, 1-decene oligomer, and ethylene propylene oligomer such as _ _ olefin oligomer or hydride thereof, alkylbenzene, and alkylnaphthalene.
- Examples of the ester synthetic oil include triglycerin fatty acid ester, diglycerin fatty acid ester, monoglycerin fatty acid ester, monoalcohol fatty acid ester, polyhydric alcohol fatty acid ester and the like.
- ether synthetic oil examples include polyoxyalkylene glycol, and polyphenyl ether.
- Commercially available synthetic oils include the "Linearen” series manufactured by Idemitsu Kosan Co., Ltd., 8,000 Sumi [3 ⁇ 4 ⁇ !_, " ⁇ 032", “ ⁇ 46”, “ ⁇ 0.68”, etc. Are listed.
- the oil may be one or more kinds selected from the above-mentioned natural oil and synthetic oil, two or more kinds of natural oil, two or more kinds of synthetic oil, or one or more kinds of each of natural oil and synthetic oil. It may be a mixture of.
- mineral oil is preferable, and at least one selected from paraffinic mineral oil and naphthenic mineral oil is more preferable.
- the flash point of the oil used in the present invention is preferably 70° or higher from the viewpoint of safety.
- the flash point of the oil 1 0 0 ° ⁇ or more, and more preferably 1 3 0 ° ⁇ As, 1 4 0 ° ⁇ As still more preferably more.
- the upper limit of the flash point of the oil is not particularly limited, but it is preferably 320° or less, more preferably 260° or less, still more preferably 200° or less.
- the viscosity of the adhesive component measured at 500° is preferably 500 or less. When the viscosity is within the above range, the adhesive component can be efficiently attached to the fiber, and the adhesive component is less likely to be attached to the manufacturing equipment. ⁇ 0 2020/175 404 28 ⁇ (: 171? 2020 /007220
- the viscosity of the adhesive component measured at 50° is preferably 2503 or less, more preferably 1003 or less, and further preferably 8033. The lower the viscosity, the better the handling and the degree of process contamination.
- the viscosity of the adhesive component at 50° means the viscosity measured at 50° using a Brookfield viscometer (Mitsumi-type viscometer). Set the rotor and rotation speed for measurement so that they are close to full scale.
- the content of the conjugated gen rubber in the adhesive component is preferably 1% by mass or more, more preferably 5% by mass or more, and further preferably 10% by mass or more, from the viewpoint of improving the adhesive force with the rubber. And preferably not more than 80% by mass, more preferably not more than 60% by mass, further preferably not more than 50% by mass, still more preferably not more than 40% by mass.
- the content of the conjugated gen-based rubber in the adhesive component is within the above range, it is possible to prevent the viscosity of the adhesive component from becoming extremely high while obtaining a sufficient adhesive force.
- the content of oil in the adhesive component is preferably 20% by mass or more, more preferably 40% by mass or more, still more preferably 50% by mass or more, still more preferably 60% by mass or more. And, it is preferably 99% by mass or less, more preferably 95% by mass or less, and further preferably 90% by mass or less.
- the mass ratio [conjugated gen rubber ([3 ⁇ 4):oil ( ⁇ )] of the conjugated gen rubber and oil in the adhesive component is preferably ⁇ : 1: 9.9 to 8: 2, It is more preferably 0.5:9.5 to 6:4, still more preferably 1:9 to 5:5, and even more preferably 1:9 to 4:6. It is generally known that oil deteriorates the adhesiveness of rubber, but when conjugated gen rubber and oil are mixed in the above specified mass ratio and used, the adhesiveness is maintained. In addition, it is possible to reduce the viscosity, which improves the handling of the adhesive component and improves the workability of adhering to the fiber.
- the conjugated gen rubber may be used alone or in combination of two or more. ⁇ 0 2020/175 404 29 ⁇ (: 171? 2020 /007220
- the oils may be used alone or in combination of two or more.
- the adhesive component in the present invention may contain components other than the conjugated gen-based rubber and oil within a range that does not impair the adhesive force with rubber.
- Examples of the other components include other polymers (for example, unmodified conjugated gen rubber), acids, alkalis, antioxidants, curing agents, dispersants, pigments, dyes, adhesion aids, strength-bonding black and the like. ..
- the content thereof is preferably not more than 100,000 parts by mass relative to 100 parts by mass of the conjugated gen-based rubber, and more preferably 1, It is not more than 0.000 parts by mass, more preferably not more than 100 parts by mass, even more preferably not more than 50 parts by mass, even more preferably not more than 25 parts by mass, still more preferably 1 It is 0 parts by mass or less.
- the fiber used as the reinforcing fiber of the present invention is not particularly limited, but from the viewpoint of compatibility with the adhesive component, hydrophilic fiber is preferable.
- the term "fiber” includes not only single fibers and long fibers but also forms such as non-woven fabric, woven fabric, knitted fabric, felt and sponge.
- thermoplastic resin having a hydrophilic functional group such as a hydroxy group, a carboxy group, a sulfonic acid group, and an amino group, and/or a hydrophilic bond such as an amid bond
- a thermoplastic resin include polyvinyl alcohol resin, polyamide resin [polyamide 6, polyamide 6 6, polyamide 11 and polyamide 1 2.
- Aliphatic polyamides such as polyamide 610, polyamide 612, polyamide 90 (polyamide consisting of nonanediamine and cyclohexanedicarboxylic acid); polyamide 9 (from nonanediamine and terephthalic acid)
- Semi-aromatic polyamines synthesized from aromatic dicarboxylic acids such as polyamido) and aliphatic diamines; and aromatic dicarboxylic acids such as polyparaphenylene terephthalamide ⁇ 0 2020/175 404 30 ⁇ (: 171? 2020 /007220
- hydrophilic synthetic fiber one type may be used alone, or two or more types may be used in combination.
- these hydrophilic synthetic fibers may be further subjected to a hydrophilization treatment described later in order to further enhance the hydrophilicity.
- hydrophilic natural fibers examples include natural cellulose fibers such as wood pulp and cotton pulp such as kraft pulp, and non-wood pulp such as straw pulp.
- hydrophilic regenerated fibers include regenerated cellulose fibers such as rayon, lyocell, cupra, and polynosic.
- hydrophilic natural fibers and regenerated fibers may be further subjected to a hydrophilization treatment described later in order to further enhance hydrophilicity.
- the hydrophobic fiber may be a hydrophilic surface-treated fiber, or a hydrophobic resin may be used as a core portion and a sheath portion may be a hydrophilic resin.
- the core-sheath type composite fiber or the like may be used.
- the hydrophilic resin constituting the sheath the description on the hydrophilic synthetic fiber is cited.
- the hydrophobic fiber made of a hydrophobic resin include polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as polyethylene terephthalate, and wholly aromatic polyester fibers. Among these, polyester fibers Is preferred.
- the hydrophilization treatment is not particularly limited as long as it is a treatment that chemically or physically imparts a hydrophilic functional group to the fiber surface.
- a hydrophobic fiber made of the hydrophobic resin may be treated with an isocyanate group,
- the surface is modified by a method of modifying with a compound or a derivative thereof containing a hydrophilic functional group such as an epoxy group, a hydroxy group, an amino group, an ether group, an aldehyde group, a carbonyl group, a carboxy group and a urethane group, or electron irradiation. It can be done by a method of quality.
- the hydrophilic fiber used in the present invention may be used as a reinforcing fiber. ⁇ 0 2020/175 404 31 ⁇ (: 171? 2020 /007220
- synthetic fibers and regenerated fibers are preferable, and among them, one or more selected from polyvinyl alcohol fibers made from polyvinyl alcohol resin, regenerated cellulose fibers, and fibers obtained by hydrophilizing the surface of hydrophobic fibers are preferable.
- the hydrophilic fiber by using the hydrophilic fiber, the modified conjugated gen rubber and the hydrophilic fiber contained in the adhesive component exhibit a strong affinity effect, and the adhesive component and the hydrophilic fiber are strongly bound to each other.
- the adhesive strength to rubber can be improved.
- polyvinyl alcohol fiber from the viewpoint of suitably using the reinforcing fiber of the present invention in an automobile hose, particularly an automobile brake oil hose, it is commercially available from Kuraray Co., Ltd. under the product name “Vinylon”, and a single yarn A fineness of about 0.1 to 30 ⁇ 1 I 6 X can be preferably used.
- the fibers may be used alone or in combination of two or more.
- the method for producing the reinforcing fiber of the present invention is not particularly limited as long as it is a method including a step of attaching the conjugated gen-based rubber to the fiber in a state of being mixed with the oil.
- the reinforcing fiber of the present invention from the viewpoint of improving the adhesive force with rubber, a method of forming an adhesive layer made of the above-mentioned adhesive component on the surface of the fiber is preferred.
- the method () is not particularly limited as long as it is a method of forming an adhesive layer composed of the adhesive component on the surface of the fiber, but includes the following step _ 1 from the viewpoint of improving the adhesiveness with rubber.
- the method is preferred.
- step _1 there is no particular limitation on the method of attaching the adhesive component to the fiber. ⁇ 0 2020/175 404 32 ⁇ (: 171? 2020 /007220
- the adhesive component it is preferable to use at least one selected from dipping, mouth coater, oiling roller, oiling guide, nozzle (spray) coating, brush coating and the like.
- the amount of the adhesive component attached is preferably 0.01 part by mass or more based on 100 parts by mass of the fiber, and is 0.1 mass.
- the amount is preferably not less than 10 parts by mass, more preferably not more than 10 parts by mass, more preferably not more than 5 parts by mass, and not more than 3 parts by mass from the viewpoint of the balance between the manufacturing cost and the effect. Is more preferable.
- the adhesive component is adhered to the fiber at room temperature of about 20 ° C for 3 to 10 days.
- the reinforcing fiber of the present invention can be obtained by allowing it to adjust to some extent, but depending on the case, the following Step 12 may be carried out.
- Process _ 2 Process of heat-treating the fiber with the adhesive component obtained in Process I _ 1
- the heat treatment in step 12 is preferably carried out at a processing temperature of 100 to 200° and a processing time of 0.1 second to 2 minutes. Since the conjugated gen-based rubber contained in the adhesive component has a reactive multiple bond, the heat treatment in the presence of oxygen is preferably 200°C or less, and 1750°C or less. It's better to be there. When the heat treatment temperature is within the above range, the reactivity in the conjugated gen-based rubber does not decrease, the adhesive strength can be improved, the deterioration of the fiber can be suppressed, and the quality such as coloring can be improved. It will be good.
- the reinforcing fiber may contain a component other than the hydrophilic fiber and the adhesive component.
- Other components include cross-linking agents, acids, bases, inorganic salts, organic salts, pigments, dyes, antioxidants, polymerization initiators, plasticizers and the like.
- the total content of the hydrophilic fiber and the adhesive component in the reinforcing fiber is preferably 80% by mass or more from the viewpoint of improving the adhesive strength with rubber and reinforcing strength. ⁇ 02020/175 404 33 ⁇ (: 171? 2020 /007220
- it is 90% by mass or more, further preferably 95% by mass or more.
- the reinforcing fiber has a single yarn fineness of 0.1. ⁇ X or more 30 It is preferably a multifilament having a thickness of ⁇ X or less.
- the single yarn fineness may be less than 0.1 016 fathers, but it is preferably 0.1 I 6 fathers or more because industrial production is difficult. Further, when the single yarn fineness is 30 I 6 X or less, the surface area of the fiber when it is used as a reinforcing fiber is large, and thus the adhesiveness with rubber is improved. From this viewpoint, the reinforcing fiber of the present invention more preferably has a single yarn fineness of 0.3. I 6 X or more, more preferably 0.
- the rubber adhesion of the reinforcing fiber of the present invention is preferably 1 51 ⁇ 1/25.4 or more, 201 ⁇ 1/25.
- the above is more preferable, 251 ⁇ 1/25.
- the above is more preferable, 301 ⁇ 1/25.4 More preferred, usually 20
- the rubber adhesive strength of the reinforcing fiber is at least the lower limit value described above, it is possible to obtain a woven fabric, a knitted product, and a molded article having excellent reinforcing strength.
- the rubber adhesive strength of the reinforcing fiber can be measured by the method described in Examples.
- the reinforcing fiber of the present invention has an initial tensile resistance of 60 ⁇ measured according to "3 1 _ 1 01 3 :201 0". ⁇ X or more is preferable. If the initial tensile resistance degree before Symbol reinforcing fibers is 60_Rei 1 ⁇ 1/1 6 X or reinforcing strength when adhered to the reinforcing fiber and the rubber is improved. From this point of view, the initial tensile resistance is more preferably 100 00 1 ⁇ 1/I 6 X or more,
- the upper limit of the initial tensile resistance is not particularly limited, but it is usually 1,000 It is less than or equal to X.
- the reinforcing fiber of the present invention can be used in any shape. ⁇ 0 2020/175 404 34 ⁇ (: 171? 2020 /007220
- it is preferable to use it in the form of a fiber cord, a woven fabric, a knitted fabric, etc. containing at least a part thereof, and it is more preferable to use it as a woven fabric or a knitted fabric containing the reinforcing fiber in at least a part thereof.
- a fiber cord a woven fabric, a knitted fabric, etc.
- it can be used as a knitted fabric that adheres to rubber.
- It can also be used as a reinforcing fiber to be embedded in resin or cement.
- the molded product of the present invention is not particularly limited as long as it uses the reinforcing fiber.
- a molded body using the above-mentioned reinforcing fiber and a rubber component (hereinafter, also referred to as “rubber molded body”) is particularly preferable because the reinforcing fiber has excellent adhesion to rubber.
- the reinforcing fiber used in the rubber molded body is preferably used as a woven or knitted fabric containing at least a part of the reinforcing fiber from the viewpoint of maintaining the shape of the rubber, and contains at least a part of the reinforcing fiber. More preferably, it is used as a laminate in which a reinforcing layer made of a woven or knitted fabric and a rubber layer are laminated.
- the rubber molded product can be used, for example, as a tire such as an automobile tire, a belt such as a conveyor belt and a timing belt, a hose, and a member of a rubber product such as a vibration-proof rubber. More preferably, it is used as a tire, belt or hose.
- various members made of a composite material of a reinforcing fiber and a rubber component such as belt, force-ply, break force, and bead tape can be used.
- the hose can be used for the purpose of transporting various fluids in various applications.
- it is suitable for a fluid transportation hose for automobiles, and particularly for liquid fuel hoses for automobiles and automobiles. It is preferably used for a brake oil hose and a hose for a refrigerant, and more preferably used for a brake oil hose for an automobile.
- the rubber molded body is preferably molded using the reinforcing fiber and a rubber composition in which a rubber component is mixed with a compounding agent usually used in the rubber industry.
- a rubber component is not particularly limited, for example, NR (natural rubber),
- IR Polyisoprene Rubber
- BR Polybutadiene Rubber
- SBR Polyrene-Vadiene Rubber
- NBR Nirile Rubber
- EPM Ethylene Propylene Copolymer Rubber
- EP DM Ethylene-Propylene
- N R, R R, B R, S B R, E P DM and C R are preferably used, and E P DM is more preferably used.
- the natural rubber alone or to use the natural rubber in combination with SBR.
- the mass ratio of natural rubber and SBR is 50/50 to 90/ from the viewpoint of suppressing the deterioration of physical properties due to reversion of rubber.
- Examples of the natural rubber include TS R (Technically Specified Rubber) and RSS (Ribbed Smoked Sheet) such as S MR (Malaysia TSR), S ⁇ R (Indonesia TS R) and STR (Thailand TS R). ) And other natural rubbers commonly used in the tire industry, high-purity natural rubber, epoxidized natural rubber, hydroxylated natural rubber, hydrogenated natural rubber, grafted natural rubber and other modified natural rubber.
- SBR SBR
- SBR SBR
- those having a styrene content of 0.1 to 70 mass% are preferable, and those having 5 to 50 mass% are preferable. More preferably, and even more preferably 15 to 35% by mass.
- those having a vinyl content of 0.1 to 60 mass% are preferable, and those having a vinyl content of 0.1 to 55 mass% are more preferable.
- the weight average molecular weight (Mw) of the SBR is preferably 100,000 to 2,500,000, more preferably 150,000 to 2,000,000, and more preferably 200,000 to 1, More than 500,000 ⁇ 0 2020/175 404 36 ⁇ (: 17 2020 /007220
- the weight average molecular weight of 3 parts is the polystyrene equivalent weight average molecular weight obtained from the measurement of gel permeation chromatography ( ⁇ ).
- a modified 3 min in which a functional group is introduced into the 3 min may be used as long as the effect of the present invention is not impaired.
- the functional group include an amino group, an alkoxysilyl group, a hydroxy group, an epoxy group, a carboxy group and the like.
- the rubber composition may further contain a filler in addition to the rubber component.
- the fillers include organic fillers such as carbon black, silica, clay, mica, calcium carbonate, magnesium hydroxide, aluminum hydroxide, barium sulfate, titanium oxide, glass fibers, fibrous fillers and glass balloons; Organic fillers such as resin particles, wood powder, and cork powder are included.
- organic fillers such as carbon black, silica, clay, mica, calcium carbonate, magnesium hydroxide, aluminum hydroxide, barium sulfate, titanium oxide, glass fibers, fibrous fillers and glass balloons
- Organic fillers such as resin particles, wood powder, and cork powder are included.
- carbon black and silica are preferable from the viewpoint of improving physical properties such as improving mechanical strength.
- Examples of the force-black include furnace black, channel black, thermal black, acetylene black, and ketch emblac.
- furnace black is preferable from the viewpoint of improving the crosslinking speed and the mechanical strength.
- the average particle size of the carbon black is 5 to 100 n Is preferred,
- the average particle size of the force-bonded black can be determined by measuring the diameter of the particles with a transmission electron microscope and calculating the average value.
- silica examples include wet silica (hydrous silicic acid), dry silica (silicic anhydride), calcium silicate, and aluminum silicate.
- wet silica is preferable. ⁇ 0 2020/175 404 37 ⁇ (: 171-1? 2020 /007220
- the average particle size of the silica is preferably 0.5 to 200 nm, more preferably 5 to 150 n, Is more preferable.
- the average particle size of the silica can be determined by measuring the particle diameter with a transmission electron microscope and calculating the average value.
- the content of the filler 1 relative to 100 parts by mass of the rubber component is preferably 20 to 150 parts by mass, and more preferably 25 to 130 parts by mass. 25 to 110 parts by mass is more preferable.
- the content thereof is preferably 20 to 120 parts by mass with respect to 100 parts by mass of the rubber component, and 20 to 90 parts by mass is more preferable, and 20 to 80 parts by mass is further preferable.
- fillers may be used alone or in combination of two or more.
- the rubber composition may further contain a crosslinking agent in order to crosslink the rubber component.
- a crosslinking agent examples include sulfur, sulfur compounds, oxygen, organic peroxides, phenol resins, amino resins, quinone and quinone dioxime derivatives, halogen compounds, aldehyde compounds, alcohol compounds, epoxide compounds, metal halides. And organic metal halides and silane compounds.
- These cross-linking agents may be used alone or in combination of two or more.
- the crosslinking agent is usually from 0.1 to 10 parts by mass, preferably from 0.5 to 10 parts by mass, and more preferably from ⁇ to 100 parts by mass of the rubber component. . 8 to 5 parts by mass is contained.
- the rubber composition when it contains sulfur, a sulfur compound or the like as a crosslinking agent for crosslinking (vulcanizing) the rubber component, it may further contain a vulcanization accelerator.
- a vulcanization accelerator examples include guanidine-based compounds, sulfenamide-based compounds, thiazole-based compounds, thiuram-based compounds, thiourea-based compounds, dithiocarbamic acid-based compounds, aldehyde-amine-based compounds, aldehyde-ammonia-based compounds, Imidazoline compounds, and xanthes -Urban compounds and the like can be mentioned.
- These vulcanization accelerators may be used alone or in combination of two or more.
- the vulcanization accelerator is usually contained in an amount of 0.1 to 15 parts by mass, preferably 0.1 to 10 parts by mass, based on 100 parts by mass of the rubber component.
- the rubber composition when it contains sulfur, a sulfur compound or the like as a crosslinking agent for crosslinking (vulcanizing) the rubber component, it may further contain a vulcanization aid.
- a vulcanization aid examples include fatty acids such as stearic acid, metal oxides such as zinc oxide, and fatty acid metal salts such as zinc stearate. These vulcanization aids may be used alone or in combination of two or more.
- the aforementioned vulcanization aid is usually contained in an amount of 0.1 to 15 parts by mass, preferably 1 to 10 parts by mass, based on 100 parts by mass of the rubber component.
- the rubber composition contains silica as a filler, it is preferable to further contain a silane coupling agent.
- silane coupling agent include sulfido compounds, mercapto compounds, vinyl compounds, amino compounds, glycidoxy compounds, nitro compounds, chloro compounds, and the like.
- silane coupling agents may be used alone or in combination of two or more.
- the silane coupling agent is preferably contained in an amount of 0.1 to 30 parts by mass, more preferably 0.5 to 20 parts by mass, and still more preferably 1 to 15 parts by mass with respect to 100 parts by mass of silica. ..
- the content of the silane coupling agent is within the above range, the dispersibility, the coupling effect and the reinforcing property are improved.
- the rubber composition is used for the purpose of improving processability, fluidity, etc. within a range that does not impair the effects of the present invention, and if necessary, silicone oil, aromatic oil, TDAE (Treated Distilled Aromatic Extracts), MES (Mi Id Extracted Solvates), RAE (Residual Aromatic Extracts) Process oils such as paraffin oil and naphthene oil, aliphatic hydrocarbon resins, alicyclic hydrocarbon resins, C 9 resins, rosin resins, coumarone-indene resins A resin component such as a phenol resin may be contained as a softening agent.
- the rubber composition is ⁇ 0 2020/175 404 39 ⁇ (: 171? 2020 /007220
- the process oil When the process oil is contained as a softening agent, its content is preferably less than 50 parts by mass with respect to 100 parts by mass of the rubber component.
- the rubber composition is, if necessary, an antioxidant, a wax, an antioxidant, a lubricant, for the purpose of improving weather resistance, heat resistance, oxidation resistance, etc. within a range that does not impair the effects of the present invention.
- You may contain additives, such as an antifungal agent and a fragrance
- the antioxidant include hindered phenol compounds, phosphorus compounds, lactone compounds, hydroxyl compounds and the like.
- the antiaging agent include amine-ketone compounds, imidazole compounds, amine compounds, phenol compounds, sulfur compounds and phosphorus compounds. These additives may be used alone or in combination of two or more.
- Examples of the method for producing the rubber molded body include, for example, embedding the reinforcing fibers in the above-mentioned unvulcanized rubber composition, and subjecting the rubber composition to vulcanization treatment to obtain a hydrophilic fiber and a rubber. It is possible to obtain a molded product in which the components are bonded via the adhesive component.
- the brake oil hose for an automobile has, for example, an inner rubber layer and an outer rubber layer, and is composed of one or two layers of the reinforcing fiber between the inner rubber layer and the outer rubber layer.
- the thing which has a reinforcement layer is mentioned.
- the reinforcing layer can be formed by braiding reinforcing fibers.As a method of manufacturing the brake oil hose, a reinforcing layer (first reinforcing layer) in which the reinforcing fibers are braided is formed on the outer surface of the inner rubber layer. Form. When forming two reinforcing layers, an intermediate rubber layer is further formed on the outer surface of the first reinforcing layer, ⁇ 0 2020/175 404 40 ⁇ (: 171? 2020 /007220
- a reinforcing layer (second reinforcing layer) in which the reinforcing fibers are braided may be formed on the outer surface of the intermediate rubber layer. Then, the outer rubber layer is formed on the outer surface of the reinforcing layer (the first reinforcing layer or the second reinforcing layer) and vulcanized to produce the rubber composition.
- the vulcanization temperature can be appropriately selected according to the type of constituent material of each layer of the brake oil hose, etc., but from the viewpoint of suppressing the deterioration of rubber and reinforcing fibers and improving the adhesive force between rubber and reinforcing fibers, It is preferably ⁇ or less.
- the fully dried 5!_O_toclave was purged with nitrogen and charged with cyclohexane 600 and 3600-butyllithium (10.5 mass% cyclohexane solution) 2129, and the temperature was raised to 70°.
- isoprene 205 0 9 was sequentially added under stirring conditions while controlling the polymerization temperature to 70°C, and polymerization was carried out for 1 hour. Thereafter, methanol was added to stop the polymerization reaction, and a polymer solution was obtained. Water was added to the obtained polymer solution and stirred, and the polymer solution was washed with water. After stirring was completed and it was confirmed that the polymer solution phase and the water phase were separated, water was separated.
- the unmodified liquid polyisoprene ('-2) was obtained by vacuum-drying the polymer solution after washing for 24 hours at 70°.
- Production Example 3 Production of Modified Conjugated Gen Rubber (81) ⁇ 02020/175 404 42 ⁇ (: 171? 2020 /007220
- the obtained unmodified liquid polybutadiene (8'-3) 500 9 was charged into an autoclave having a volume of 1 !_ that had been replaced with nitrogen, and maleic anhydride 25 9 and 1 ⁇ 1_phenyl_1 ⁇ 1, _ (1 ,3—Dimethylpentyl) _ _Phenylenediamine (Product name "Nocrac 6 (3)" manufactured by Ouchi Shinko Kagaku Kogyo Co., Ltd.) 0.59 was added, and at 1 70 ° ⁇ 24 The reaction was carried out for a time to obtain maleic anhydride-modified liquid polybutadiene (8_3).
- Production Example 5 Production of modified conjugated gen rubber (8_5)
- liquid unmodified polyfarnesene polybutadiene diene copolymer (8''-6) 509 was charged into an autoclave with a volume of 1! Maleic acid 259 and ! ⁇ 1-phenyl! ⁇ 1,1, ((1,3-dimethyl) ⁇ 0 2020/175 404 45 ⁇ (:171? 2020/007220 butyl) 1-phenylenediamine (trade name "Nocrac 60", manufactured by Ouchi Shinko Chemical Industry Co., Ltd.)
- the reaction was carried out at a temperature of 24 ° C for 24 hours to obtain a maleic anhydride-modified liquid polyfarnesene polybutadiene copolymer (8'_6).
- liquid unmodified polyfarnesene polybutadiene copolymer (8′-7) 509 was charged into an autoclave having a volume of 1! Maleic acid 2 59 and 1 ⁇ 1-phenyl-1 ⁇ 1,1, 1 (1,3-dimethylbutyl) _ _phenylenediamine (trade name "Nocrac 60", Ouchi Shinko Kagaku Kogyo Co., Ltd.) 9 was added, and the mixture was reacted at 170° C. for 24 hours to obtain a maleic acid-free liquid polyfarnesene polybutadiene diene copolymer (817).
- the modified conjugated gen rubbers IV!, 1 ⁇ / ⁇ and 1 ⁇ /1 ⁇ «/1 ⁇ / ⁇ were calculated as standard polystyrene conversion values by ⁇ ⁇ (gel permeation chromatography).
- the measuring device and conditions are as follows.
- the melt viscosity of the modified conjugated gen rubber at 38 ° was measured with a Brookfield viscometer (manufactured by BROOKFIELD ENGINEERING LABS. INC.). ⁇ 0 2020/175 404 47 ⁇ (: 171? 2020 /007220
- the modified conjugated gen-based rubber 109 was sampled in an aluminum pan and the differential scanning calorimetry (measured by thermometer at 10 °C/min heating rate condition was used to measure the thermogram). The value was taken as the glass transition temperature.
- Average number of hydrogen-bonding functional groups per molecule [(Number average molecular weight ( Mn )) / (Molecular weight of styrene unit) X (Conjugating gen and other monomer units other than conjugated gen, if necessary) Of the hydrogen-bonding functional group)
- the method of calculating the equivalent of the hydrogen-bonding functional group can be appropriately selected depending on the type of the hydrogen-bonding functional group.
- the sample was washed four times with methanol (5!_ for sample 19) to remove impurities such as antioxidants, and then the sample was dried under reduced pressure at 80 ° for 12 hours.
- the sample 39 was added to toluene 801 0_, ethanol 20. After adding 1_ to dissolve it, neutralization titration was performed with a 0.11 ⁇ 1 potassium hydroxide solution in ethanol, and the acid value was determined from the following formula.
- the mass of the hydrogen-bonding functional group contained per maleic anhydride-modified conjugated gen rubber and monomethyl maleate-modified conjugated gen rubber was calculated by the following formula.
- the mass (polymer main chain mass) other than the functional groups contained in the acid-modified conjugated gen rubber and the monomethyl maleate-modified conjugated gen rubber 19 was calculated.
- the equivalent amount (/ ⁇ ) of the hydrogen-bonding functional group was calculated from the following formula.
- Example 1 a reinforcing fiber having an adhesive component on at least a part of the surface of the hydrophilic fiber was produced and evaluated as follows.
- the modified conjugated gen rubber (- ⁇ !) prepared as described above was mixed with mineral oil (purity 99.9% or more, flash point 158 ° ⁇ ) at a ratio of 3:7 to obtain an adhesive component.
- mineral oil purity 99.9% or more, flash point 158 ° ⁇
- Vinylon fiber which is a polyvinyl alcohol fiber from which oil has been previously removed with acetone (Kuraray Co., Ltd. “Kuraron 1 239 ”, total fineness 1 330 1 6 X, single yarn fineness 6. 65 1 6 X) was applied with an oiling guide and then wound up. The vinylon fiber to which the adhesive component was attached in this way was twisted at a twisting number of 80 to produce a fiber cord.
- a fiber cord was produced in the same manner as in Example 1 except that the adhesive component, the mixing ratio of the conjugated gen rubber and the oil, and the amount attached to the fiber were changed as shown in Table 2.
- Adhesion components, mixing ratio of conjugated gen-based rubber and oil, and amount of adhesion to fibers were changed as shown in Table 2, and it was carried out except that vinylon which was subjected to hydrophilic treatment described below was used as hydrophilic fiber.
- a fiber cord was produced in the same manner as in Example 1.
- Vinylon a polyvinyl alcohol fiber in an aqueous solution adjusted to the following composition (Kuraray Co., Ltd. "Klaron 1 239", total fineness 1 330 ⁇ 1 I 6 X, single yarn fineness 6. 65 ⁇ 1 I 6 X) was squeezed and squeezed with a mouth roller. Next, the obtained fiber was dried at 130°C for 20 seconds, further heat-treated at 240°C for 20 seconds and wound up to prepare a hydrophilized vinylon.
- a fiber cord was produced in the same manner as in Example 1 except that the mixed liquid was not attached to the vinylon.
- vinylon fiber (“Kuraron 1 239” manufactured by Kuraray Co., Ltd.), which is a polyvinyl alcohol fiber from which oil has been removed beforehand using acetone, Total fineness 1 330 ⁇ 1 I 6 X, Single yarn fineness 6. It was applied by using an oiling guide, then dried at 120 ° ⁇ for 30 seconds, heat-treated at 170 ° ⁇ for 30 seconds, and then wound. The vinylon to which the adhesive component was attached in this way was twisted with 80 twists / to produce a fiber cord.
- Kuraray Co., Ltd. which is a polyvinyl alcohol fiber from which oil has been removed beforehand using acetone, Total fineness 1 330 ⁇ 1 I 6 X, Single yarn fineness 6. It was applied by using an oiling guide, then dried at 120 ° ⁇ for 30 seconds, heat-treated at 170 ° ⁇ for 30 seconds, and then wound. The vinylon to which the adhesive component was attached in this way was twisted with 80 twists / to produce a fiber cord.
- Fiber code was obtained in the same manner as in Example 1 except that xylene, toluene, or undecane was used in place of the mineral oil, and the mixing ratio of the conjugated gen rubber and oil and the amount attached to the fiber were changed as shown in Table 2. Was produced.
- the solution B was mixed with the aged solution A and then aged at a temperature of 25° C. for 16 hours to produce an R FL solution.
- it was diluted twice with water after the above operation.
- Vapor pressures of toluene and xylene at 20 °C were measured directly by the static method.
- the flash points of mineral oils, synthetic oils, and fatty acid esters were measured by "3 ⁇ 2265 -4 Cleveland opening method.”
- the flash points of toluene, xylene, and undecane were measured by the "3 ⁇ 2265_1 tag closing method.”
- the viscosity of the adhesive component at 50° was measured with a rotary type viscometer (rotation number 100 “”) using a mixed solution that had been heated to 50° in advance using a water bath.
- the adhesion amount of the adhesive component was measured by the following measuring method.
- the adhesive component was extracted and the extraction mass Y was measured. Toluene was used as the solvent for extraction, and extraction was performed for 3 hours using a Soxhlet extractor.
- the adhesion amount of the adhesive component was calculated by the following formula.
- Amount of adhesive component adhering to the reinforcing fiber (Y / X) X 1 ⁇ ⁇
- the content of conjugated gen rubber in the adhesive component (mass %) is the conjugation of solid content in the adhesive component. It was calculated from the mass ratio of the gen rubber.
- the reinforcing fibers collected using a volatile material were air-dried in the draft, and after the remaining oil was volatilized, the amount of adhesion was measured, so all the extracted oil content was synergistic Gen rubber.
- the adhesive sheet was prepared as follows.
- the fiber cords produced in the above-mentioned examples, comparative examples and reference examples were arranged and fixed on the masking tape in a sloping shape so that the fiber cords do not overlap each other, and this was separately provided with the rubber 0 1 ⁇ /1 rubber ( Sumitomo Chemical Co., Ltd. "Espren 5 01 8") prepared with the following composition Unvulcanized rubber composition containing rubber as a main component (hereinafter, also referred to as "Mimi 0 IV! Unvulcanized rubber”) (width 25.4
- Length 2400 100 The length of the overlapped part with the unvulcanized rubber is 1 90 Met) . Then, an evaluation sheet was prepared by press vulcanizing for 30 minutes under the conditions of 150 ° and pressure of 201 ⁇ 9/ ⁇ 12 .
- Cross-linking agent (sulfur powder): 1.5 parts by mass
- Vulcanization aid (2 types of zinc oxide, stearic acid): 6 parts by mass ⁇ 0 2020/175 404 54 ⁇ (: 171? 2020 /007220
- a fiber cord was produced in the same manner as in Example 1 except that Mitsuko fiber, which is a polyester fiber subjected to a hydrophilization treatment described later, was used as the hydrophilic fiber. ⁇ 02020/175404 55 ⁇ (: 171? 2020 /007220
- a fiber cord was produced in the same manner as in Comparative Example 1 except that Mingo fiber, which was a polyester fiber subjected to a hydrophilization treatment described later, was used as the hydrophilic fiber.
- a fiber cord was produced in the same manner as in Reference Example 1 except that Mitsuko fiber, which was a polyester fiber subjected to a hydrophilic treatment described later, was used as the hydrophilic fiber.
- Mending fiber (“Toray Co., Ltd. “702 (3), total fineness 1 670 I 6 X, single yarn fineness 5.80 ⁇ 1 16 X”) in an aqueous solution adjusted to the following composition. After crushing, it was squeezed with a mouth roller, and then the obtained fiber was dried at 130 ° ⁇ for 60 seconds, further heat-treated at 240 ° ⁇ for 60 seconds and wound up to be hydrophilized. Mingko fibers were produced.
- the reinforcing fiber of the present invention has excellent adhesiveness to rubber without using an adhesive mainly composed of resorcinol-formaldehyde resin and rubber latex. An excellent reinforcing fiber can be obtained. Further, according to the present invention, it is possible to efficiently manufacture the reinforcing fiber while suppressing the contamination of the manufacturing equipment.
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Abstract
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CN202080016935.2A CN113454282B (zh) | 2019-02-27 | 2020-02-21 | 增强纤维及其制造方法、以及使用了其的成形体 |
EP20762349.7A EP3933101A4 (en) | 2019-02-27 | 2020-02-21 | REINFORCEMENT FIBER, PROCESS FOR PRODUCTION THEREOF AND MOLDED ELEMENTS MANUFACTURED FROM THEM |
US17/433,717 US11884788B2 (en) | 2019-02-27 | 2020-02-21 | Reinforcing fiber, method for manufacturing same, and molded body using same |
KR1020217027198A KR20210129076A (ko) | 2019-02-27 | 2020-02-21 | 보강 섬유 및 그 제조 방법, 그리고 그것을 사용한 성형체 |
JP2021502221A JP7458367B2 (ja) | 2019-02-27 | 2020-02-21 | 補強繊維及びその製造方法、並びにそれを用いた成形体 |
CA3131502A CA3131502A1 (en) | 2019-02-27 | 2020-02-21 | Reinforcing fiber, method for manufacturing same, and molded body using same |
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WO2023085413A1 (ja) * | 2021-11-15 | 2023-05-19 | 株式会社クラレ | 水系接着剤、それを用いた補強繊維、及び補強繊維を用いたエラストマー製品 |
WO2023085412A1 (ja) * | 2021-11-15 | 2023-05-19 | 株式会社クラレ | 補強繊維、その製造方法、及び補強繊維を用いたエラストマー製品 |
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CN112280113B (zh) * | 2020-10-28 | 2023-01-17 | 诺博橡胶制品有限公司 | 发动机悬置用橡胶材料及其制备方法和发动机悬置与汽车 |
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- 2020-02-21 US US17/433,717 patent/US11884788B2/en active Active
- 2020-02-21 EP EP20762349.7A patent/EP3933101A4/en active Pending
- 2020-02-21 KR KR1020217027198A patent/KR20210129076A/ko active Search and Examination
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2023085413A1 (ja) * | 2021-11-15 | 2023-05-19 | 株式会社クラレ | 水系接着剤、それを用いた補強繊維、及び補強繊維を用いたエラストマー製品 |
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Also Published As
Publication number | Publication date |
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TWI829877B (zh) | 2024-01-21 |
JPWO2020175404A1 (ja) | 2020-09-03 |
US11884788B2 (en) | 2024-01-30 |
EP3933101A4 (en) | 2022-11-30 |
CA3131502A1 (en) | 2020-09-03 |
CN113454282A (zh) | 2021-09-28 |
US20220049062A1 (en) | 2022-02-17 |
EP3933101A1 (en) | 2022-01-05 |
TW202100624A (zh) | 2021-01-01 |
KR20210129076A (ko) | 2021-10-27 |
JP7458367B2 (ja) | 2024-03-29 |
CN113454282B (zh) | 2024-02-13 |
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