WO2023276929A1 - シーラント材組成物およびそれを用いたタイヤ - Google Patents
シーラント材組成物およびそれを用いたタイヤ Download PDFInfo
- Publication number
- WO2023276929A1 WO2023276929A1 PCT/JP2022/025519 JP2022025519W WO2023276929A1 WO 2023276929 A1 WO2023276929 A1 WO 2023276929A1 JP 2022025519 W JP2022025519 W JP 2022025519W WO 2023276929 A1 WO2023276929 A1 WO 2023276929A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- material composition
- sealant material
- sealant
- composition according
- mass
- Prior art date
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 62
- 239000012812 sealant material Substances 0.000 title claims abstract description 51
- 239000000565 sealant Substances 0.000 claims abstract description 44
- 229920001971 elastomer Polymers 0.000 claims abstract description 34
- 239000005060 rubber Substances 0.000 claims abstract description 34
- 239000004014 plasticizer Substances 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 238000004132 cross linking Methods 0.000 claims abstract description 13
- 239000000853 adhesive Substances 0.000 claims description 17
- 230000001070 adhesive effect Effects 0.000 claims description 17
- 238000004073 vulcanization Methods 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 9
- 239000011593 sulfur Substances 0.000 claims description 9
- 244000043261 Hevea brasiliensis Species 0.000 claims description 6
- 239000005062 Polybutadiene Substances 0.000 claims description 6
- 229920003052 natural elastomer Polymers 0.000 claims description 6
- 229920001194 natural rubber Polymers 0.000 claims description 6
- 229920002857 polybutadiene Polymers 0.000 claims description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 6
- 229920003049 isoprene rubber Polymers 0.000 claims description 5
- 239000013032 Hydrocarbon resin Substances 0.000 claims description 4
- 230000009477 glass transition Effects 0.000 claims description 4
- 229920006270 hydrocarbon resin Polymers 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 33
- 239000003795 chemical substances by application Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 9
- 239000003208 petroleum Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 6
- 229920001296 polysiloxane Polymers 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- -1 phosphate ester Chemical class 0.000 description 5
- 239000010734 process oil Substances 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 4
- 239000002174 Styrene-butadiene Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000002788 crimping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000379 polymerizing effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 2
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 150000001733 carboxylic acid esters Chemical class 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 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 2
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 2
- 229960002447 thiram Drugs 0.000 description 2
- PMJHHCWVYXUKFD-SNAWJCMRSA-N (E)-1,3-pentadiene Chemical compound C\C=C\C=C PMJHHCWVYXUKFD-SNAWJCMRSA-N 0.000 description 1
- NVZWEEGUWXZOKI-UHFFFAOYSA-N 1-ethenyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C=C NVZWEEGUWXZOKI-UHFFFAOYSA-N 0.000 description 1
- JZHGRUMIRATHIU-UHFFFAOYSA-N 1-ethenyl-3-methylbenzene Chemical compound CC1=CC=CC(C=C)=C1 JZHGRUMIRATHIU-UHFFFAOYSA-N 0.000 description 1
- LIAWCKFOFPPVGF-UHFFFAOYSA-N 2-ethyladamantane Chemical compound C1C(C2)CC3CC1C(CC)C2C3 LIAWCKFOFPPVGF-UHFFFAOYSA-N 0.000 description 1
- YCMLQMDWSXFTIF-UHFFFAOYSA-N 2-methylbenzenesulfonimidic acid Chemical compound CC1=CC=CC=C1S(N)(=O)=O YCMLQMDWSXFTIF-UHFFFAOYSA-N 0.000 description 1
- BKOOMYPCSUNDGP-UHFFFAOYSA-N 2-methylbut-2-ene Chemical compound CC=C(C)C BKOOMYPCSUNDGP-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- RYUJRXVZSJCHDZ-UHFFFAOYSA-N 8-methylnonyl diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(=O)(OCCCCCCCC(C)C)OC1=CC=CC=C1 RYUJRXVZSJCHDZ-UHFFFAOYSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VHOQXEIFYTTXJU-UHFFFAOYSA-N Isobutylene-isoprene copolymer Chemical compound CC(C)=C.CC(=C)C=C VHOQXEIFYTTXJU-UHFFFAOYSA-N 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- CGSLYBDCEGBZCG-UHFFFAOYSA-N Octicizer Chemical compound C=1C=CC=CC=1OP(=O)(OCC(CC)CCCC)OC1=CC=CC=C1 CGSLYBDCEGBZCG-UHFFFAOYSA-N 0.000 description 1
- GTVWRXDRKAHEAD-UHFFFAOYSA-N Tris(2-ethylhexyl) phosphate Chemical compound CCCCC(CC)COP(=O)(OCC(CC)CCCC)OCC(CC)CCCC GTVWRXDRKAHEAD-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical class OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229920006271 aliphatic hydrocarbon resin Polymers 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 229920006272 aromatic hydrocarbon resin Polymers 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical class [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- IFDVQVHZEKPUSC-UHFFFAOYSA-N cyclohex-3-ene-1,2-dicarboxylic acid Chemical class OC(=O)C1CCC=CC1C(O)=O IFDVQVHZEKPUSC-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920003244 diene elastomer Polymers 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- QARIOUOTENZTDH-UHFFFAOYSA-N diphenyl (2-phenylphenyl) phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C(=CC=CC=1)C=1C=CC=CC=1)(=O)OC1=CC=CC=C1 QARIOUOTENZTDH-UHFFFAOYSA-N 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- VZCYOOQTPOCHFL-OWOJBTEDSA-L fumarate(2-) Chemical class [O-]C(=O)\C=C\C([O-])=O VZCYOOQTPOCHFL-OWOJBTEDSA-L 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 229920005555 halobutyl Polymers 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical class OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
- 150000002688 maleic acid derivatives Chemical class 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- DKYVVNLWACXMDW-UHFFFAOYSA-N n-cyclohexyl-4-methylbenzenesulfonamide Chemical compound C1=CC(C)=CC=C1S(=O)(=O)NC1CCCCC1 DKYVVNLWACXMDW-UHFFFAOYSA-N 0.000 description 1
- FGTVYMTUTYLLQR-UHFFFAOYSA-N n-ethyl-1-phenylmethanesulfonamide Chemical compound CCNS(=O)(=O)CC1=CC=CC=C1 FGTVYMTUTYLLQR-UHFFFAOYSA-N 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- PMJHHCWVYXUKFD-UHFFFAOYSA-N piperylene Natural products CC=CC=C PMJHHCWVYXUKFD-UHFFFAOYSA-N 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical class CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000003459 sulfonic acid esters Chemical class 0.000 description 1
- 238000001757 thermogravimetry curve Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 description 1
- 125000005591 trimellitate group Chemical group 0.000 description 1
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- KOWVWXQNQNCRRS-UHFFFAOYSA-N tris(2,4-dimethylphenyl) phosphate Chemical compound CC1=CC(C)=CC=C1OP(=O)(OC=1C(=CC(C)=CC=1)C)OC1=CC=C(C)C=C1C KOWVWXQNQNCRRS-UHFFFAOYSA-N 0.000 description 1
- WTLBZVNBAKMVDP-UHFFFAOYSA-N tris(2-butoxyethyl) phosphate Chemical compound CCCCOCCOP(=O)(OCCOCCCC)OCCOCCCC WTLBZVNBAKMVDP-UHFFFAOYSA-N 0.000 description 1
- HQUQLFOMPYWACS-UHFFFAOYSA-N tris(2-chloroethyl) phosphate Chemical compound ClCCOP(=O)(OCCCl)OCCCl HQUQLFOMPYWACS-UHFFFAOYSA-N 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/16—Auto-repairing or self-sealing arrangements or agents
- B29C73/163—Sealing compositions or agents, e.g. combined with propellant agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J107/00—Adhesives based on natural rubber
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Definitions
- the present invention relates to a sealant material composition and a tire using the same.
- a pneumatic tire in which a sealant layer is provided radially inward of an inner liner layer in a tread portion.
- the sealant material flows into the through-hole to exhibit sealing performance, suppress a decrease in air pressure, and maintain running. becomes possible.
- the improvement of the sealing performance can generally be achieved by using butyl rubber as the rubber component and blending a large amount of plasticizer to lower the viscosity of the sealant material, thereby facilitating the flow of the sealant material into the through holes.
- the following patent document describes a sealant material composition that constitutes the sealant layer of a pneumatic tire having a sealant layer on the inner surface of the tire, wherein 1 part by mass of a cross-linking aid is added to 100 parts by mass of halogenated butyl rubber.
- An object of the present invention is to provide a sealant material composition that can sufficiently improve the sealing performance for through-holes formed when a foreign object such as a nail pierces the tread portion, compared to the prior art.
- a sealant material composition containing a rubber component, a tackifier, a plasticizer and a cross-linking component and having an adhesive force to steel materials set to a specific value or more can solve the above problems. and was able to complete the present invention.
- the present invention provides a sealant material composition that constitutes the sealant layer of a pneumatic tire having a sealant layer on the inner surface of the tire, the sealant composition comprising a rubber component, a tackifier, a plasticizer and a cross-linking component, and having adhesion to steel materials.
- the sealant composition comprising a rubber component, a tackifier, a plasticizer and a cross-linking component, and having adhesion to steel materials.
- a sealant composition characterized by having a force of 12 N or more.
- the sealant material composition of the present invention contains a rubber component, a tackifier, a plasticizer and a cross-linking component, and is characterized by having an adhesive strength to steel materials of 12 N or more. According to the above configuration, for example, even when the viscosity of the sealant material composition is high, it is possible to sufficiently improve the sealing performance with respect to the through hole formed when a foreign object such as a nail pierces the tread portion as compared with the conventional technology. can.
- FIG. 1 is a perspective sectional view showing a pneumatic tire according to an embodiment of the invention.
- FIG. 2 is an equatorial cross-sectional view showing a pneumatic tire according to an embodiment of the present invention.
- FIG. 3 is a sectional view showing an enlarged part of the pneumatic tire according to the embodiment of the invention.
- Rubber components used in the present invention include, for example, natural rubber (NR), synthetic isoprene rubber (IR), butadiene rubber (BR), styrene-butadiene copolymer rubber (SBR), acrylonitrile-butadiene copolymer rubber ( NBR), diene rubber such as ethylene-propylene-diene terpolymer (EPDM), and butyl rubber. These may be used alone or in combination of two or more.
- the rubber component is preferably NR, IR, SBR, BR or a blend thereof from the viewpoint of improving the effects of the present invention.
- Tackifiers used in the present invention include, for example, hydrocarbon resins.
- Hydrocarbon resins include aromatic hydrocarbon resins or saturated or unsaturated aliphatic hydrocarbon resins produced by polymerizing components obtained by distilling, cracking, or reforming crude oil. A petroleum-based resin is mentioned.
- Examples of petroleum resins include C5 petroleum resins (aliphatic petroleum resins obtained by polymerizing fractions such as isoprene, 1,3-pentadiene, cyclopentadiene, methylbutene, and pentene), C9 petroleum resins ( ⁇ -methylstyrene, Aromatic petroleum resins obtained by polymerizing fractions such as o-vinyltoluene, m-vinyltoluene and p-vinyltoluene), C5C9 copolymer petroleum resins, and the like are exemplified.
- C5 petroleum resins aliphatic petroleum resins obtained by polymerizing fractions such as isoprene, 1,3-pentadiene, cyclopentadiene, methylbutene, and pentene
- C9 petroleum resins ⁇ -methylstyrene
- Aromatic petroleum resins obtained by polymerizing fractions such as o-vinyltoluene, m-vinyl
- the glass transition temperature (Tg) of the tackifier is preferably higher than 0°C. By defining Tg in this way, flowability is improved.
- the glass transition temperature (Tg) referred to in the present invention refers to the temperature at the midpoint of the transition region measured by differential scanning calorimetry (DSC) under the conditions of a temperature increase rate of 20° C./min and measuring a thermogram. More preferably, the Tg is 30°C or higher and 90°C or lower.
- the number average molecular weight of the tackifier is preferably 400-2000. By having a number average molecular weight within this range, adhesive strength is improved.
- plasticizers used in the present invention include carboxylic acid ester plasticizers, phosphate ester plasticizers, sulfonate ester plasticizers, oils, liquid rubbers, and the like.
- Carboxylic acid ester plasticizers include known phthalates, isophthalates, tetrahydrophthalates, adipates, maleates, fumarates, trimellitates, linoleates, oleates, and stearates. There are esters, ricinoleic acid esters, and the like.
- Phosphate ester plasticizers include known trimethyl phosphate, triethyl phosphate, tributyl phosphate, tri-(2-ethylhexyl) phosphate, 2-ethylhexyldiphenyl phosphate, tributoxyethyl phosphate, triphenyl phosphate, cresyl diphenyl phosphate, isodecyl Diphenyl phosphate, tricresyl phosphate, tritolyl phosphate, trixylenyl phosphate, tris(chloroethyl) phosphate, diphenyl mono-o-xenyl phosphate and the like.
- Sulfonic acid ester plasticizers include known benzenesulfonbutyramide, toluenesulfonamide, N-ethyl-toluenesulfonamide, N-cyclohexyl-p-toluenesulfonamide and the like.
- Oils include mineral oils such as known paraffinic process oils, naphthenic process oils, and aromatic process oils.
- the liquid rubber include liquid polyisoprene, liquid polybutadiene, liquid polystyrene butadiene, and the like.
- the average molecular weight said by this invention means the number or weight average molecular weight of polystyrene conversion analyzed by a gel permeation chromatography (GPC).
- the liquid rubber used in the present invention is liquid at 23°C. Therefore, it is distinguished from the rubber component, which is solid at this temperature.
- oil or liquid rubber is preferable as the plasticizer from the viewpoint of improving the effects of the present invention.
- cross-linking component examples include sulfur, vulcanization accelerators, and the like as components that improve sealing properties.
- the vulcanization accelerator used in the present invention includes, for example, known guanidine-based, thiazole-based, sulfenamide-based, thiourea-based, dithiocarbamate-based, xanthate-based, and thiuram-based vulcanization accelerators. Among them, one or more selected from thiazole-based vulcanization accelerators, sulfenamide-based vulcanization accelerators, thiourea-based vulcanization accelerators and thiuram-based vulcanization accelerators are preferable.
- the sealant material composition of the present invention contains less than 30 parts by mass of a tackifier, 20 to 150 parts by mass of a plasticizer, 0.1 to 10 parts by mass of sulfur, and 100 parts by mass of a rubber component. 0.1 to 10 parts by mass of a vulcanization accelerator is blended.
- the content of the tackifier is preferably 1 to 29 parts by mass, more preferably 10 to 29 parts by mass.
- the tackifier can be blended in an amount exceeding 90 parts by mass with respect to 100 parts by mass of the rubber component, from the viewpoint of improving the adhesive strength between the nail and the like and the tackifier.
- the content of the tackifier is preferably more than 90 parts by mass and 150 parts by mass or less.
- the amount of the plasticizer compounded is 20 parts by mass or more with respect to 100 parts by mass of the rubber component, the sealing performance is further improved.
- the blending amount of the plasticizer is 150 parts by mass or less, the adhesive strength to steel materials increases. More preferably, the blending amount of the plasticizer is 30 to 90 parts by mass.
- the sealant material composition of the present invention can also be dynamically crosslinked when sulfur is blended as a crosslinkable component.
- the sealant material composition of the present invention may contain various additives such as vulcanizing or cross-linking agents; vulcanizing or cross-linking accelerators; zinc oxide; anti-aging agents; Such additives can be kneaded by a general method to form a composition, and the blending amount of these additives can also be a conventional general blending amount as long as it does not contradict the purpose of the present invention. .
- the sealant material composition of the present invention preferably has a complex viscosity of 1000 Pa ⁇ s or more at 30°C.
- the complex viscosity at 30° C. is 1000 Pa ⁇ s or more, the sealant material composition does not flow excessively, exhibits excellent flowability, and can prevent deterioration of sealability.
- the complex viscosity at 30° C. is preferably 3,000 to 15,000 Pa ⁇ s, more preferably 5,000 to 10,000 Pa ⁇ s.
- the complex viscosity is measured with respect to the sealant material composition after vulcanization, and can be measured by the method described in ASTM D4440.
- the sealant material composition in the present invention needs to have an adhesive strength of 12 N or more to steel materials. Since the adhesive strength to steel materials is 12 N or more, for example, even when the complex viscosity of the sealant material composition is as high as described above, it is possible to seal through holes formed when a foreign object such as a nail penetrates the tread portion. can be significantly improved over the prior art. On the other hand, if the adhesive strength is less than 12 N, sufficient sealing properties cannot be exhibited.
- the adhesive strength of the sealant material composition to steel materials referred to in the present invention means the adhesive strength of the vulcanized sealant material composition to steel materials.
- the adhesive strength to the steel material is preferably 12 to 25N, more preferably 15 to 20N.
- the adhesive strength can be measured by a Picmatack tester manufactured by Toyo Seiki Seisakusho Co., Ltd.
- the measurement conditions are as follows. Contact crimping force: 4.9N Crimping time: 10 seconds Crimping speed: 50 cm/min Peeling speed: 125cm/min
- Other side steel material (carbon concentration can be in the normal range, such as 0.0218-2.14%)
- the sealant material composition of the present invention can be provided as a sealant layer inside the inner liner layer in the tread portion in the tire radial direction in a pneumatic tire.
- the sealant layer can be formed by vulcanizing the sealant material composed of the sealant material composition of the present invention, molding it into a sheet, and applying it over the entire circumference of the inner surface of the tire.
- the sealant layer can also be formed by vulcanizing the sealant material, molding it into a string or strip, and spirally attaching it to the inner surface of the tire.
- the sealant layer has a thickness of, for example, 0.5 mm to 5.0 mm.
- the pneumatic tire of this embodiment includes a tread portion 1 extending in the tire circumferential direction and forming an annular shape, a pair of sidewall portions 2 arranged on both sides of the tread portion 1, and these side walls.
- a pair of bead portions 3 are arranged inside the wall portion 2 in the tire radial direction.
- a sealant layer 6 is adhered to a hollow portion 4 surrounded by the tread portion 1, the sidewall portion 2, and the bead portion 3. As shown in FIG. This sealant layer 6 is arranged in a region corresponding to the tread portion 1 of the tire inner surface 5 .
- the sealant layer 6 is made of the sealant material composition of the present invention.
- the sealant layer 6 can adhere to the tire inner surface 5 due to its stickiness.
- a sealant layer 6 and a release agent transfer layer 7 are laminated on the tire inner surface 5 in this order from the inner side in the tire radial direction.
- the release agent transfer layer 7 was transferred to the tire inner surface 5 of the vulcanized pneumatic tire by vulcanizing the green tire using a bladder having a coating layer of the release agent. It is. The release agent thus transferred is scattered over the entire tire inner surface 5 without being transferred.
- the amount of silicon is preferably 10.0% by mass or less at least in the region where the sealant layer 6 is arranged on the tire inner surface 5.
- the amount of silicon which is the main component of general release agents, is used as an index.
- the amount of silicon can be detected using a fluorescent X-ray analysis method.
- the fluorescent X-ray analysis method includes the FP method (fundamental parameter method) and the calibration curve method, but the FP method is used in the present invention. adopt.
- the carcass layer and the inner liner layer were measured at a plurality of locations (for example, 4 locations in the tire circumferential direction and 3 locations in the tire width direction, 7 locations in total) of the pneumatic tire.
- locations for example, 4 locations in the tire circumferential direction and 3 locations in the tire width direction, 7 locations in total
- a sheet sample (dimensions: width 70 mm, length 100 mm) obtained by peeling
- a total of 5 measurement samples (dimensions: width 13 mm to 15 mm, width 13 mm to 15 mm, A length of 35 mm to 40 mm) is extracted, and the amount of release agent is measured for each measurement sample using a fluorescent X-ray spectrometer.
- the release agent amount for each sheet sample is calculated, and each calculated value is included in the range of 10.0% by mass or less.
- fluorescent X-ray particles have specific energy proportional to their atomic number, and by measuring this specific energy, it becomes possible to specify the element. Specifically, the intrinsic energy of silicon is 1.74 ⁇ 0.05 keV.
- the number of fluorescent X-ray particles (X-ray intensity) of the release agent (silicon) is in the range of 0.1 cps/ ⁇ A to 1.5 cps/ ⁇ A.
- components constituting the transfer layer 7 made of a release agent include those containing a silicone component as an active ingredient.
- silicone components include organopolysiloxanes such as dialkylpolysiloxane, alkylphenylpolysiloxane, alkylaralkylpolysiloxane, and 3,3,3-trifluoropropylmethylpolysiloxane.
- Dialkylpolysiloxanes are, for example, dimethylpolysiloxane, diethylpolysiloxane, methylisopropylpolysiloxane, methyldodecylpolysiloxane.
- alkylphenylpolysiloxane examples include methylphenylpolysiloxane, dimethylsiloxane/methylphenylsiloxane copolymer, and dimethylsiloxane/diphenylsiloxane copolymer.
- Alkylaralkylpolysiloxanes are, for example, methyl(phenylethyl)polysiloxane and methyl(phenylpropyl)polysiloxane. These organopolysiloxanes may be used alone or in combination of two or more.
- the amount of silicon in the release agent transferred to the arrangement region of the sealant layer 6 is 10.0% by mass or less. It becomes possible to Thereby, the adhesiveness between the tire inner surface 5 and the sealant layer 6 can be sufficiently secured.
- the amount of silicon in the release agent in the arrangement region of the sealant layer 6 is 10.0% by mass or less, the adhesiveness of the sealant layer 6 is improved and sufficient durability is obtained.
- Examples 1-5 and Comparative Example 1 The formulation (parts by weight) shown in Table 1 was kneaded for 40 minutes in a 1.7-liter internal Banbury mixer to obtain a sealant composition. Next, the obtained sealant material composition was press vulcanized in a predetermined mold at 180° C. for 10 minutes to obtain a sealant material having a thickness of 3 mm.
- the adhesive strength of the sealant composition obtained above was measured by the method described above. Moreover, the complex viscosity at 30° C. of the sealant composition obtained above was measured by the method described above.
- a test tire was manufactured by affixing the above sealant material as a layer. The following physical properties were measured for the obtained test tire.
- the test tire was mounted on a wheel with a rim size of 17 ⁇ 7J, and the initial air pressure was set to 250 kPa. Nails with a diameter of 4 mm were hammered into the tread, removed, left for 1 hour, and then the air pressure was measured.
- the evaluation results are indicated by " ⁇ " when the air pressure after standing is 230 kPa or more and 250 kPa or less, " ⁇ " when the air pressure after standing is 200 kPa or more and less than 230 kPa, and the air pressure after standing is 200 kPa. A case of less than that is indicated by "x".
- the sealant composition of each example contains a rubber component, a tackifier, a plasticizer, and a cross-linking component, and has an adhesive strength of 12 N or more to steel materials, thus exhibiting excellent sealability.
- the adhesive strength to steel materials was 9.4 N, which is less than the lower limit specified in the present invention, so the sealing performance deteriorated.
- Embodiment 1 A sealant material composition constituting the sealant layer of a pneumatic tire having a sealant layer on the inner surface of the tire, including rubber components, tackifiers, plasticizers and cross-linking components, A sealant material composition characterized by having an adhesive strength to steel materials of 12 N or more.
- Embodiment 2 The sealant material composition according to Embodiment 1, wherein the complex viscosity at 30°C is 1000 Pa ⁇ s or more.
- Embodiment 3 3. The sealant composition of embodiment 1 or 2, wherein the rubber component is natural rubber, synthetic isoprene rubber, styrene-butadiene copolymer rubber, butadiene rubber, or blends thereof.
- Embodiment 4 4. The sealant composition of any of embodiments 1-3, wherein the tackifier is a hydrocarbon resin.
- Embodiment 5 5. The sealant composition according to any one of embodiments 1 to 4, wherein the tackifier has a glass transition temperature (Tg) higher than 0°C.
- Embodiment 6 The sealant composition according to any one of Embodiments 1 to 5, wherein the tackifier has a number average molecular weight of 400-2000.
- Embodiment 7 The sealant material composition according to any one of Embodiments 1 to 6, wherein the amount of the tackifier is less than 30 parts by mass with respect to 100 parts by mass of the rubber component.
- Embodiment 8 8.
- Embodiment 9 The sealant material composition according to any one of Embodiments 1 to 8, wherein the amount of the plasticizer compounded is 20 to 150 parts by mass with respect to 100 parts by mass of the rubber component.
- Embodiment 10 10. The sealant composition of any of embodiments 1-9, wherein the cross-linking component comprises sulfur and a vulcanization accelerator.
- Embodiment 11 10. The sealant material composition according to Embodiment 10, wherein the amount of sulfur compounded is 0.1 to 10 parts by mass with respect to 100 parts by mass of the rubber component.
- Embodiment 12 A tire using the sealant composition according to any one of Embodiments 1-11.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
- Sealing Material Composition (AREA)
Abstract
Description
(ゴム成分)
本発明で使用されるゴム成分は、例えば、天然ゴム(NR)、合成イソプレンゴム(IR)、ブタジエンゴム(BR)、スチレン-ブタジエン共重合体ゴム(SBR)、アクリロニトリル-ブタジエン共重合体ゴム(NBR)、エチレン-プロピレン-ジエンターポリマー(EPDM)等のジエン系ゴムや、ブチルゴム等が挙げられる。これらは、単独で用いてもよく、2種以上を併用してもよい。
中でも、本発明の効果向上の観点から、ゴム成分はNR、IR、SBR、BRまたはこれらのブレンドであることが好ましい。
本発明で使用される粘着付与剤としては、例えば炭化水素樹脂が挙げられる。
炭化水素樹脂としては、原油を蒸留、分解、改質などの処理をして得られた成分を重合して製造される芳香族系炭化水素樹脂あるいは飽和または不飽和脂肪族系炭化水素樹脂等の石油系樹脂が挙げられる。石油系樹脂としては、例えばC5系石油樹脂(イソプレン、1,3-ペンタジエン、シクロペンタジエン、メチルブテン、ペンテンなどの留分を重合した脂肪族系石油樹脂)、C9系石油樹脂(α-メチルスチレン、o-ビニルトルエン、m-ビニルトルエン、p-ビニルトルエンなどの留分を重合した芳香族系石油樹脂)、C5C9共重合石油樹脂などが例示される。
さらに好ましい前記Tgは、30℃以上90℃以下である。
また、粘着付与剤の数平均分子量は、400~2000であることが好ましい。この範囲の数平均分子量を有することにより、粘着力が向上する。
本発明で使用される可塑剤としては、例えば、カルボン酸エステル可塑剤、リン酸エステル可塑剤、スルホン酸エステル可塑剤、オイル、液状ゴム等が挙げられる。
カルボン酸エステル可塑剤としては、公知のフタル酸エステル、イソフタル酸エステル、テトラヒドロフタル酸エステル、アジピン酸エステル、マレイン酸エステル、フマル酸エステル、トリメリット酸エステル、リノール酸エステル、オレイン酸エステル、ステアリン酸エステル、リシノール酸エステル等がある。
リン酸エステル可塑剤としては、公知のトリメチルホスフェート、トリエチルホスフェート、トリブチルホスフェート、トリ-(2-エチルヘキシル)ホスフェート、2-エチルヘキシルジフェニルホスフェート、トリブトキシエチルホスフェート、トリフェニルホスフェート、クレジルジフェニルホスフェート、イソデシルジフェニルホスフェート、トリクレジルホスフェート、トリトリルホスフェート、トリキシレニルホスフェート、トリス(クロロエチル)ホスフェート、ジフェニルモノ-o-キセニルホスフェート等がある。
スルホン酸エステル可塑剤としては、公知のベンゼンスルホンブチルアミド、トルエン
スルホンアミド、N-エチル-トルエンスルホンアミド、N-シクロヘキシル-p-トルエンスルホンアミド等がある。
オイルとしては、公知のパラフィン系プロセスオイル、ナフテン系プロセスオイル、芳香族系プロセスオイル等の鉱物油系オイルが挙げられる。
液状ゴムとしては、液状ポリイソプレン、液状ポリブタジエンおよび液状ポリスチレンブタジエン等が挙げられ、その重量平均分子量は1000~100000が好ましく、1500~75000がさらに好ましい。なお、本発明で言う平均分子量は、ゲルパーミエーションクロマトグラフィー(GPC)で分析されるポリスチレン換算の数または重量平均分子量を意味する。なお本発明で使用される液状ゴムは、23℃で液体である。したがって、この温度では固体である前記のゴム成分とは区別される。
上記の中でも、本発明の効果向上の観点から、可塑剤としてはオイルまたは液状ゴムが好ましい。
本発明で使用される架橋成分としては、例えばシール性を向上させる成分として硫黄、加硫促進剤等が挙げられる。
本発明で使用される加硫促進剤としては、例えば、公知のグアジニン系、チアゾール系、スルフェンアミド系、チオウレア系、ジチオカルバミン酸塩系、キサントゲン酸塩系、チウラム系の加硫促進剤等が挙げられ、中でもチアゾール系加硫促進剤、スルフェンアミド系加硫促進剤、チオウレア系加硫促進剤およびチウラム系加硫促進剤から選択された1種以上が好ましい。
本発明のシーラント材組成物は、好適な形態において、ゴム成分100質量部に対し、粘着付与剤を30質量部未満、可塑剤を20~150質量部、硫黄を0.1~10質量部、加硫促進剤を0.1~10質量部配合してなる。
ゴム成分100質量部に対し、粘着付与剤の前記配合量が30質量部未満であることにより、本発明の効果が高まるとともに、シーラント材組成物の粘度温度依存性および保管性が良好となる。粘着付与剤の前記配合量は、1~29質量部が好ましく、10~29質量部がさらに好ましい。なお、上記とは別の形態において、釘等と粘着付与剤との粘着力の向上の観点から、粘着付与剤はゴム成分100質量部に対し90質量部を超えて配合することもできる。この形態において、粘着付与剤の前記配合量は、90質量部超150質量部以下が好ましい。
ゴム成分100質量部に対し、可塑剤の前記配合量が20質量部以上であることにより、シール性がさらに向上する。一方、可塑剤の前記配合量が150質量部以下であることにより、鉄鋼材に対する粘着力が増大する。可塑剤の前記配合量は、30~90質量部がさらに好ましい。
また、硫黄または加硫促進剤の前記配合量が0.1~10質量部の範囲であることにより、シール性が向上する。本発明におけるシーラント材組成物は、架橋成分として硫黄を配合する場合、動的架橋することも可能である。
本発明におけるシーラント材組成物には、前記した成分以外の、加硫又は架橋剤;加硫又は架橋促進剤;酸化亜鉛;老化防止剤;カーボンブラック等の各種添加剤を配合することができ、かかる添加剤は一般的な方法で混練して組成物とすることができ、これらの添加剤の配合量も、本発明の目的に反しない限り、従来の一般的な配合量とすることができる。
なお複素粘度は、加硫後のシーラント材組成物に対して測定され、ASTM D4440に記載の方法により測定できる。
なお本発明で言う、シーラント材組成物の鉄鋼材に対する粘着力とは、加硫後のシーラント材組成物の、鉄鋼材に対する粘着力を意味する。
前記鉄鋼材に対する粘着力は、12~25Nが好ましく、15~20Nがさらに好ましい。
該粘着力は、株式会社東洋精機製作所製ピクマタックテスタにより測定できる。測定条件は以下の通りである。
接触子圧着力:4.9N
圧着時間:10秒
圧着速度:50cm/min
剥離速度:125cm/min
他着側:鉄鋼材(炭素濃度は通常範囲であることができ、例えば0.0218~2.14%である)
表1に示す配合(質量部)において、1.7リットルの密閉式バンバリーミキサーで40分間混練し、シーラント材組成物を得た。次に得られたシーラント材組成物を所定の金型中で180℃、10分間プレス加硫して厚さ3mmのシーラント材を得た。
また、上記で得られたシーラント材組成物の30℃での複素粘度を、上記記載の方法で測定した。
試験タイヤをリムサイズ17×7Jのホイールに組み付けて、初期空気圧を250kPaとし、直径4mmの釘をトレッド部に打ち、抜いてから1時間放置した後、空気圧を測定した。評価結果は、放置後の空気圧が230kPa以上かつ250kPa以下である場合を「〇」で示し、放置後の空気圧が200kPa以上かつ230kPa未満である場合を「△」で示し、放置後の空気圧が200kPa未満である場合を「×」で示した。
*2:SBR(日本ゼオン株式会社製Nipol 1502)
*3:粘着付与剤(ENEOS株式会社製T-REZ RC115、C5石油樹脂)
*4:可塑剤(出光興産株式会社社製ダイアナプロセスオイルNP250(ナフテン系プロセスオイル))
*5:硫黄(鶴見化学工業株式会社製金華印油入微粉硫黄)
*6:加硫促進剤DM-PO(三新化学工業株式会社製サンセラーDM-PO)
これに対し、比較例1は鉄鋼材に対する粘着力が9.4Nであり、本発明で規定する下限未満であるので、シール性が悪化した。
実施形態1:
タイヤ内表面にシーラント層を備えた空気入りタイヤの前記シーラント層を構成するシーラント材組成物であって、
ゴム成分、粘着付与剤、可塑剤および架橋成分を含み、
鉄鋼材に対する粘着力が12N以上である
ことを特徴とするシーラント材組成物。
実施形態2:
30℃での複素粘度が、1000Pa・s以上であることを特徴とする実施形態1に記載のシーラント材組成物。
実施形態3:
前記ゴム成分が、天然ゴム、合成イソプレンゴム、スチレン-ブタジエン共重合体ゴム、ブタジエンゴムまたはこれらのブレンドであることを特徴とする実施形態1または2に記載のシーラント材組成物。
実施形態4:
前記粘着付与剤が、炭化水素樹脂であることを特徴とする実施形態1~3のいずれかに記載のシーラント材組成物。
実施形態5:
前記粘着付与剤のガラス転移温度(Tg)が、0℃よりも高いことを特徴とする実施形態1~4のいずれかに記載のシーラント材組成物。
実施形態6:
前記粘着付与剤の数平均分子量が400~2000であることを特徴とする実施形態1~5のいずれかに記載のシーラント材組成物。
実施形態7:
前記粘着付与剤の配合量が、前記ゴム成分100質量部に対し30質量部未満であることを特徴とする実施形態1~6のいずれかに記載のシーラント材組成物。
実施形態8:
前記可塑剤が、オイルまたは液状ゴムであることを特徴とする実施形態1~7のいずれかに記載のシーラント材組成物。
実施形態9:
前記可塑剤の配合量が、前記ゴム成分100質量部に対し20~150質量部であることを特徴とする実施形態1~8のいずれかに記載のシーラント材組成物。
実施形態10:
前記架橋成分が、硫黄および加硫促進剤を含むことを特徴とする実施形態1~9のいずれかに記載のシーラント材組成物。
実施形態11:
前記硫黄の配合量が、前記ゴム成分100質量部に対し、0.1~10質量部であることを特徴とする実施形態10に記載のシーラント材組成物。
実施形態12:
実施形態1~11のいずれかに記載のシーラント材組成物を使用したタイヤ。
Claims (12)
- タイヤ内表面にシーラント層を備えた空気入りタイヤの前記シーラント層を構成するシーラント材組成物であって、
ゴム成分、粘着付与剤、可塑剤および架橋成分を含み、
鉄鋼材に対する粘着力が12N以上である
ことを特徴とするシーラント材組成物。 - 30℃での複素粘度が、1000Pa・s以上であることを特徴とする請求項1に記載のシーラント材組成物。
- 前記ゴム成分が、天然ゴム、合成イソプレンゴム、スチレン-ブタジエン共重合体ゴム、ブタジエンゴムまたはこれらのブレンドであることを特徴とする請求項1に記載のシーラント材組成物。
- 前記粘着付与剤が、炭化水素樹脂であることを特徴とする請求項1に記載のシーラント材組成物。
- 前記粘着付与剤のガラス転移温度(Tg)が、0℃よりも高いことを特徴とする請求項1に記載のシーラント材組成物。
- 前記粘着付与剤の数平均分子量が400~2000であることを特徴とする請求項1に記載のシーラント材組成物。
- 前記粘着付与剤の配合量が、前記ゴム成分100質量部に対し30質量部未満であることを特徴とする請求項1に記載のシーラント材組成物。
- 前記可塑剤が、オイルまたは液状ゴムであることを特徴とする請求項1に記載のシーラント材組成物。
- 前記可塑剤の配合量が、前記ゴム成分100質量部に対し20~150質量部であることを特徴とする請求項1に記載のシーラント材組成物。
- 前記架橋成分が、硫黄および加硫促進剤を含むことを特徴とする請求項1に記載のシーラント材組成物。
- 前記硫黄の配合量が、前記ゴム成分100質量部に対し、0.1~10質量部であることを特徴とする請求項10に記載のシーラント材組成物。
- 請求項1に記載のシーラント材組成物を使用したタイヤ。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/571,930 US20240278514A1 (en) | 2021-07-01 | 2021-07-01 | Sealant composition and tire using the same |
EP22833076.7A EP4365259A1 (en) | 2021-07-01 | 2022-06-27 | Sealant material composition and tire using same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-110041 | 2021-07-01 | ||
JP2021110041A JP2023007054A (ja) | 2021-07-01 | 2021-07-01 | シーラント材組成物およびそれを用いたタイヤ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023276929A1 true WO2023276929A1 (ja) | 2023-01-05 |
Family
ID=84691409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/025519 WO2023276929A1 (ja) | 2021-07-01 | 2022-06-27 | シーラント材組成物およびそれを用いたタイヤ |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240278514A1 (ja) |
EP (1) | EP4365259A1 (ja) |
JP (1) | JP2023007054A (ja) |
WO (1) | WO2023276929A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5742753A (en) * | 1980-08-29 | 1982-03-10 | Rockcor Inc | Sealant composition |
JPS57190069A (en) * | 1981-05-07 | 1982-11-22 | Firestone Tire & Rubber Co | Sealant composition and air tire |
JPS5915442A (ja) * | 1982-04-14 | 1984-01-26 | ロツクコ−・インコ−ポレ−テツド | 接着組成物 |
JPS60115647A (ja) * | 1983-11-09 | 1985-06-22 | ザ・フアイヤーストーン・タイヤ・アンド・ラバー・カンパニー | Epdmに基づくシーラント組成物及びそれを含有するパンク封止タイヤ |
JP2854981B2 (ja) * | 1992-06-22 | 1999-02-10 | ミシュラン ルシェルシュ エ テクニク ソシエテ アノニム | パンク密封材配合物 |
JP6583456B2 (ja) | 2018-03-20 | 2019-10-02 | 横浜ゴム株式会社 | シーラント材組成物および空気入りタイヤ |
-
2021
- 2021-07-01 US US18/571,930 patent/US20240278514A1/en active Pending
- 2021-07-01 JP JP2021110041A patent/JP2023007054A/ja active Pending
-
2022
- 2022-06-27 WO PCT/JP2022/025519 patent/WO2023276929A1/ja active Application Filing
- 2022-06-27 EP EP22833076.7A patent/EP4365259A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5742753A (en) * | 1980-08-29 | 1982-03-10 | Rockcor Inc | Sealant composition |
JPS57190069A (en) * | 1981-05-07 | 1982-11-22 | Firestone Tire & Rubber Co | Sealant composition and air tire |
JPS5915442A (ja) * | 1982-04-14 | 1984-01-26 | ロツクコ−・インコ−ポレ−テツド | 接着組成物 |
JPS60115647A (ja) * | 1983-11-09 | 1985-06-22 | ザ・フアイヤーストーン・タイヤ・アンド・ラバー・カンパニー | Epdmに基づくシーラント組成物及びそれを含有するパンク封止タイヤ |
JP2854981B2 (ja) * | 1992-06-22 | 1999-02-10 | ミシュラン ルシェルシュ エ テクニク ソシエテ アノニム | パンク密封材配合物 |
JP6583456B2 (ja) | 2018-03-20 | 2019-10-02 | 横浜ゴム株式会社 | シーラント材組成物および空気入りタイヤ |
Also Published As
Publication number | Publication date |
---|---|
US20240278514A1 (en) | 2024-08-22 |
EP4365259A1 (en) | 2024-05-08 |
JP2023007054A (ja) | 2023-01-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR0152437B1 (ko) | 공기 보유 내부라이너를 갖는 공기 타이어 | |
WO2013047356A1 (ja) | タイヤ用ゴム組成物及びこれを用いる空気入りタイヤ | |
JP2008297493A (ja) | タイヤ用ゴム組成物 | |
US20200001651A1 (en) | Pneumatic Tire | |
JP2005213486A (ja) | アンダートレッド用ゴム組成物及びそれを使用する空気入りタイヤ | |
CN105377978A (zh) | 轮胎 | |
JPWO2019111546A1 (ja) | ゴム組成物及び空気入りタイヤ | |
WO2023276929A1 (ja) | シーラント材組成物およびそれを用いたタイヤ | |
CN114867812B (zh) | 密封剂材料组合物 | |
JP7124698B2 (ja) | インナーライナー用ゴム組成物及び空気入りタイヤ | |
JP2016098296A (ja) | インナーライナー用未加硫ゴム組成物および空気入りタイヤ | |
WO2023042524A1 (ja) | シーラント材組成物およびそれを用いたタイヤ | |
JP7188468B2 (ja) | シーラント材組成物およびそれを用いたタイヤ | |
JP7168012B2 (ja) | シーラント材組成物およびそれを用いたタイヤ | |
JP2018012818A (ja) | タイヤ用ゴム組成物 | |
JP7464878B2 (ja) | シーラント材組成物およびそれを用いたタイヤ | |
RU2699673C1 (ru) | Пневматическая шина | |
CN116745355A (zh) | 密封剂材料组合物及使用了该密封剂材料组合物的轮胎 | |
US20230191729A1 (en) | Sealant composition and pneumatic tire using same | |
WO2022074989A1 (ja) | 空気入りタイヤ | |
JP2018002872A (ja) | インナーライナー用ゴム組成物 | |
JP2022029223A (ja) | シーラント材組成物 | |
JP2022167463A (ja) | タイヤ用シーラント材の製造方法 | |
JP2021066762A (ja) | タイヤ用ゴム組成物およびそれを用いた空気入りタイヤ | |
JP2016016825A (ja) | ランフラットタイヤ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22833076 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18571930 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022833076 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022833076 Country of ref document: EP Effective date: 20240201 |