JP6856797B2 - エラストマー組成物及びその使用 - Google Patents
エラストマー組成物及びその使用 Download PDFInfo
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- JP6856797B2 JP6856797B2 JP2020048035A JP2020048035A JP6856797B2 JP 6856797 B2 JP6856797 B2 JP 6856797B2 JP 2020048035 A JP2020048035 A JP 2020048035A JP 2020048035 A JP2020048035 A JP 2020048035A JP 6856797 B2 JP6856797 B2 JP 6856797B2
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- GRJISGHXMUQUMC-UHFFFAOYSA-N silyl prop-2-enoate Chemical compound [SiH3]OC(=O)C=C GRJISGHXMUQUMC-UHFFFAOYSA-N 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 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
- 229910000018 strontium carbonate Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- 125000004205 trifluoroethyl group Chemical group [H]C([H])(*)C(F)(F)F 0.000 description 1
- 125000000725 trifluoropropyl group Chemical group [H]C([H])(*)C([H])([H])C(F)(F)F 0.000 description 1
- JLGNHOJUQFHYEZ-UHFFFAOYSA-N trimethoxy(3,3,3-trifluoropropyl)silane Chemical compound CO[Si](OC)(OC)CCC(F)(F)F JLGNHOJUQFHYEZ-UHFFFAOYSA-N 0.000 description 1
- GFKCWAROGHMSTC-UHFFFAOYSA-N trimethoxy(6-trimethoxysilylhexyl)silane Chemical compound CO[Si](OC)(OC)CCCCCC[Si](OC)(OC)OC GFKCWAROGHMSTC-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- PZJJKWKADRNWSW-UHFFFAOYSA-N trimethoxysilicon Chemical group CO[Si](OC)OC PZJJKWKADRNWSW-UHFFFAOYSA-N 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical class [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
- B60C19/12—Puncture preventing arrangements
- B60C19/122—Puncture preventing arrangements disposed inside of the inner liner
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
- C08G77/08—Preparatory processes characterised by the catalysts used
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/02—Elements
- C08K3/04—Carbon
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/56—Organo-metallic compounds, i.e. organic compounds containing a metal-to-carbon bond
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- C08K5/00—Use of organic ingredients
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- C08K5/57—Organo-tin compounds
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- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
- C09K3/1018—Macromolecular compounds having one or more carbon-to-silicon linkages
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
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- 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
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/068—Containing also other elements than carbon, oxygen or nitrogen in the polymer main chain
- C09K2200/0685—Containing silicon
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Nanotechnology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
- Tires In General (AREA)
Description
(i)1分子当たり少なくとも1個、典型的には少なくとも2個のヒドロキシル官能基を有する、少なくとも1種の縮合硬化性シリル末端ポリマーと、
(ii)
1分子団当たり少なくとも2個の加水分解性基、あるいは少なくとも3個の加水分解性基を有するシラン、及び/又は
少なくとも2個のシリル基を有するシリル官能性分子であって、各シリル基が少なくとも1個の加水分解性基を含有するシリル官能性分子
の群から選択される架橋剤と、
(iii)チタネート及び/又はジルコネートの群から選択される縮合触媒と、
を含み、
(i)、(ii)及び(iii)は単一の部に保存されておらず、
全ケイ素結合ヒドロキシル(Si−OH)基の全加水分解性基に対するモル比が、シリル含有架橋剤を使用する場合0.5:1〜2:1、又はシリル官能性分子含有架橋剤を使用する場合、0.5:1〜10:1、あるいは0.5:1〜4:1であり、触媒M−OR官能基[式中、Mはチタン又はジルコニウムである]の、ISO787−2:1981に従って決定した組成物中に存在する水分及び全ケイ素結合ヒドロキシル基の合計に対するモル比が、0.01:1〜0.6:1であることを特徴とする、2部型水分硬化性シリコーンタイヤシーラント組成物が提供される。
X3−A−X1(1)
[式中、X3及びX1は、末端がヒドロキシル含有基であるシロキサン基から独立して選択され、Aは、シロキサン及び/又は有機含有ポリマー鎖、あるいはシロキサンポリマー鎖である]を有する。
上記定義による−Si(OH)3、−(Ra)Si(OH)2、−(Ra)2Si(OH)、又は−(Ra)2Si−Rc−Si(Rd)p(OH)3−pが挙げられる。好ましくは、X3及び/又はX1末端基は、ヒドロキシジアルキルシリル基、例えば、ヒドロキシジメチルシリル基である。
−(R5 sSiO(4−s)/2)− (2)
[式中、各R5は、独立して、1〜10個の炭素原子を有するヒドロカルビル基などの有機基で、任意選択で、塩素又はフッ素などの1個以上のハロゲン基で置換されており、sは0、1、又は2であり、典型的にはsは約2である]のシロキサン単位を含む。基R5の具体例としては、メチル基、エチル基、プロピル基、ブチル基、ビニル基、シクロヘキシル基、フェニル基、トリル基、塩素又はフッ素で置換されたプロピル基、例えば3,3,3−トリフルオロプロピル、クロロフェニル、β−(ペルフルオロブチル)エチル若しくはクロロシクロヘキシル基が挙げられる。好適には、基R5のうちの少なくともいくつか、好ましくは実質的に全てが、メチルである。
(−C3H6−O−);若しくはオキシブチレン単位(−C4H8−O−)、又はこれらの混合物から構成され得る。
−[−Re−O−(−Rf−O−)w−Pn−CRg 2−Pn−O−(−Rf−O−)q−Re]−
[式中、Pnは1,4−フェニレン基であり、Reはそれぞれ同一であるか又は異なり、2〜8個の炭素原子を有する二価炭化水素基であり、Rfはそれぞれ同一であるか又は異なり、エチレン基又はプロピレン基であり、Rgはそれぞれ同一であるか又は異なり、水素原子又はメチル基であり、下付文字w及びqのそれぞれは3〜30の範囲の正の整数である]を挙げることができる。
1分子当たり少なくとも2個の加水分解性基、あるいは少なくとも3個の加水分解性基を有するシラン、及び/又は
少なくとも2個のシリル基を有するシリル官能性分子であって、各シリル基が少なくとも1個の加水分解性基を含有するシリル官能性分子
である。
R”4−rSi(OR5)r(3)
[式中、R5は、上記のとおりであり、rは2、3又は4の値を有する]によって記載することができる。典型的なシランは、R”がメチル、エチル又はビニル又はイソブチルを表すものである。R”は、直鎖及び分枝状のアルキル、アリル、フェニル及び置換フェニル、アセトキシ、オキシムから選択される有機基である。場合によっては、R5はメチル又はエチルを表し、rは3である。
(R4O)m(Y1)3−m−Si(CH2)x−((NHCH2CH2)t−Q(CH2)x)n−Si(OR4)m(Y1)3−m(4)
[式中、R4は、C1〜10アルキル基であり、Y1は、1〜8個の炭素を含有するアルキル基であり、
Qは、孤立電子対を有するヘテロ原子を含有する化学基、例えば、アミン、N−アルキルアミン又は尿素であり、各xは、1〜6の整数であり、tは0又は1であり、各mは、独立して1、2又は3であり、nは0又は1である]
により記載されるものなどの加水分解性基を少なくとも1個含有するポリマーであってもよい。
a)1つの部にポリマー(i)及び架橋剤(ii)、もう1つの部にポリマー(i)及び触媒(iii)、
b)1つの部に架橋剤(ii)、もう1つの部にポリマー(i)及び触媒(iii)、又は
c)1種よりも多くのポリマー(i)を使用する場合、1つの部に第1のポリマー(i)及び架橋剤(ii)、もう1つの部に第2のポリマー(i)及び触媒(iii)、
d)1つの部にポリマー(i)、もう1つの部に架橋剤(ii)及び触媒(iii)。
2部型水分硬化性シリコーンタイヤシーラント組成物は、充填剤、例えば、補強及び/若しくは非補強無機充填剤、熱及び/若しくは電気伝導性充填剤、例えば、金属充填剤及び溶融性充填剤、又はこれらの組み合わせを組み込んでもよい。
熱伝導性充填剤、並びに/又は無水補強及び/若しくは増量充填剤は、存在する場合、任意選択で、処理剤で表面処理されてもよい。処理剤及び処理方法は当該技術分野において公知である。充填剤の表面処理は、典型的に、例えば、脂肪酸若しくはステアレートなどの脂肪酸エステルを用いて、又はオルガノシラン、オルガノシロキサン、若しくはオルガノシラザン、例えばヘキサアルキルジシラザン若しくは短鎖シロキサンジオールを用いて行われる。一般に、表面処理は充填剤を疎水性にし、したがって、組成物中の他の成分との均質混合物の取り扱い及び入手を容易にする。
R5 eSi(OR6)4−e
[式中、R5は、6〜20個の炭素原子を有する置換又は非置換の一価炭化水素基、例えば、へキシル、オクチル、ドデシル、テトラデシル、ヘキサデシル、及びオクタデシルなどのアルキル基、ベンジル及びフェニルエチルなどのアラルキル基であり、6〜20個の炭素原子を有すアルキル基が好ましく、R6は、1〜6個の炭素原子を有するアルキルであり、文字eは、1、2又は3である]などのシランも、充填剤の処理剤として使用できる。
好適な接着促進剤は、式R14 hSi(OR15)(4−h)[式中、下付き文字hは、1、2、又は3であり、あるいはhは3である]のアルコキシシランを含んでもよい。各R14は独立して一価の有機官能基である。R14は、グリシドキシプロピル若しくは(エポキシシクロヘキシル)エチルなどのエポキシ官能基、アミノエチルアミノプロピル若しくはアミノプロピルなどのアミノ官能基、メタクリルオキシプロピル、メルカプトプロピルなどのメルカプト官能基、又は不飽和有機基であり得る。各R15は独立して、少なくとも1個の炭素原子を有する非置換飽和炭化水素基である。R15は、1〜4個の炭素原子、あるいは1〜2個の炭素原子を有してよい。R15の例としては、メチル、エチル、n−プロピル、及びイソプロピルが挙げられる。
好適な界面活性剤としては、シリコーンポリエーテル、エチレンオキサイドポリマー、プロピレンオキサイドポリマー、エチレンオキサイドとプロピレンオキサイドとのコポリマー、その他のノニオン性界面活性剤、並びにこれらの組み合わせが挙げられる。組成物は、組成物の重量に基づいて最大0.05%の界面活性剤を含んでもよい。
組成物は、組成物の重量に基づいて最大2%の融剤を含んでもよい。カルボン酸及びアミンなどの化学活性官能基を含有する分子を融剤として使用することができる。そのような融剤としては、コハク酸、アビエチン酸、オレイン酸、及びアジピン酸などの脂肪族酸;安息香酸などの芳香族酸;脂肪族アミン及びそれらの誘導体、例えばトリエタノールアミン、アミンの塩酸塩、並びにアミンの臭化水素酸塩を挙げることができる。融剤は当該技術分野において既知であり、市販されている。
好適な酸受容体としては、酸化マグネシウム、酸化カルシウム、及びこれらの組み合わせが挙げられる。組成物は、適切であれば、組成物の重量に基づいて最大2%の酸受容体を含んでもよい。
ブリヂストンTuranza ER300 205/55/16 91H、
Continental Conti Premium Contact 5 205/55/16 91W、
Goodyear Efficient Grip 205/55/16 91H、
Michelin Energy Saver 205/55/16 91V、及び
Pirelli Cinturato P7 205/55/16 91V。
73.01gのNanocyl(登録商標)NC7000カーボンナノチューブ、3544.2gのOH末端ポリジメチルシロキサン(約50,000mPa・sの粘度及び63,000g/molの数平均分子量(Mn)を示す)及び382.8gのトリメトキシシリル末端ポリジメチルシロキサン(約56,000mPa・sの粘度及び62,000g/molの数平均分子量(Mn)を示す)を、Neulinger5リットルミキサーに加えた。これらを最初に遊星ミキサーを用いて50rpmで2分間混合し、その後遊星ミキサーで50rpm及びディスクで700rpmで更に15分間、最後に遊星ミキサーで100rpm及びディスクで700rpmで更に30分間混合した。得られたベース生成物を、次いで、バケツに取り出した。
1500gのEvonik Printex Aカーボンブラック、8825gのOH末端ポリジメチルシロキサン(約50,000mPa・sの粘度及び63,000g/molの数平均分子量(Mn)を示す)及び973gのトリメトキシシリル末端ポリジメチルシロキサン(約56,000mPa・sの粘度及び62,000g/molの数平均分子量(Mn)を示す)を、20リットルのバケツに加え、Collomix Biaxペールミキサーで60分間混合した。
実施例1
24.87gのトリメトキシシリル末端ポリジメチルシロキサン(約56,000mPa・sの粘度及び62,000g/molの数平均分子量(Mn)を示す)及び0.133gのテトラn−ブチルチタネートを合わせて、デンタルミキサーにより2300rpmで30秒間混合した。250gのベースAをプラスチック容器に導入した。トリメトキシシリル末端ポリジメチルシロキサン(56,000mPa・sの粘度)とテトラn−ブチルチタネートとの上記予備混合物を、容器に加え、スピードミキサーにて2300rpmで30秒間を4回、混合した。
28.85gのトリメトキシシリル末端ポリジメチルシロキサン(約56,000mPa・sの粘度及び62,000g/molの数平均分子量(Mn)を示す)及び0.155gのテトラn−ブチルチタネートを、合わせてデンタルミキサーにより2300rpmで30秒間混合した。290gのベース2をプラスチック容器に導入した。トリメトキシシリル末端ポリジメチルシロキサン(56,000mPa・sの粘度)とテトラn−ブチルチタネートとの上記予備混合物を、容器に加え、スピードミキサーにて2300rpmで30秒間を4回、混合した。
40.85gのトリメトキシシリル末端ポリジメチルシロキサン(約56,000mPa・sの粘度及び62,000g/molの数平均分子量(Mn)を示す)を、0.133gのテトラn−ブチルチタネートと予備混合した。250gのベースAをプラスチック容器に加えた。トリメトキシシリル末端ポリジメチルシロキサン(56,000mPa・sの粘度)とテトラn−ブチルチタネートとの上記予備混合物を、容器に加え、スピードミキサーにて2300rpmで30秒間を4回、混合した。
15.89gのトリメトキシシリル末端ポリジメチルシロキサン(約56,000mPa・sの粘度及び62,000g/molの数平均分子量(Mn)を示す)を、0.133gのテトラn−ブチルチタネートと予備混合した。250gのベースAをプラスチック容器に加えた。トリメトキシシリル末端ポリジメチルシロキサン(56,000mPa・sの粘度)とテトラn−ブチルチタネートとの上記予備混合物を、容器に加え、スピードミキサーにて2300rpmで30秒間を4回、混合した。
TA XT plusテクスチャーアナライザーを使用して、硬化エラストマーの硬度を観測した。使用したプローブは、球形端部で終端されたポリカーボネートシリンダである。プローブと球体の直径は、1/2インチ(1.27cm)である。スタートに戻る(return to start)プログラムを使用した。プレテストスピードは5mm/sで、トリガー力は0.1gである。テストスピードは1mm/sである。プローブは、生成物中に5mmの距離で挿入され、その後、有意な力が測定されない距離まで移される。最大の正及び負の力を測定し、本明細書に報告する。より高い正の力は、より高い硬度のエラストマーを表す。より高い負の力は、より粘着性のエラストマーを表す。
プレス及びカッティングシリンダーを使って、タイヤの回転バンド上に直径3mmの孔を切り取った。実施例1、2並びに比較例1及び2で得られた生成物を、それぞれ310mLのカートリッジに充填し、タイヤ内部に塗布し、ルーラーを用いて、設計厚さで平滑化した。
Claims (16)
- (i)ヒドロキシル末端ポリジメチルシロキサンである、少なくとも1種の縮合硬化性シリル末端ポリマーと、
(ii)
トリメチルシリル末端ポリジメチルシロキサンである、架橋剤と、
(iii)チタネート及び/又はジルコネートの群から選択される、縮合触媒と、
− 追加的に含まれていてもよい充填剤と、
を含み、
(i)、(ii)及び(iii)は単一の部に保存されておらず、
全ケイ素結合ヒドロキシル基の全加水分解性基に対するモル比が、1.10:1超〜1.79:1未満であり、触媒M−OR官能基[式中、Mはチタン又はジルコニウムである]の、ISO787−2:1981に従って決定した前記組成物中に存在する水分及び全ケイ素結合ヒドロキシル基の合計に対するモル比が0.01:1〜0.6:1であることを特徴とする、
タイヤをシールする生成物を得るための、多部型セルフシーリング水分硬化性シリコーンシーラント組成物。 - 前記ポリマー(i)及び前記架橋剤(ii)の粘度が、23℃で混合したときに少なくとも40,000mPa.sである、請求項1に記載の多部型セルフシーリング水分硬化性シリコーンシーラント組成物。
- 前記充填剤が、ヒュームドシリカ及び沈降シリカ、炭酸カルシウム、カーボンブラック、中空ガラスビーズ及び/又はカーボンナノチューブから選択される、請求項1に記載の多部型セルフシーリング水分硬化性シリコーンシーラント組成物。
- 前記充填剤が、多層カーボンナノチューブ及び/又はカーボンブラックである、請求項3に記載の多部型セルフシーリング水分硬化性シリコーンシーラント組成物。
- 組成物が、ポリマー(i)及び存在する場合は充填剤を含むベース部と、架橋剤(ii)及び触媒(iii)を含む硬化性の部と、の2つの部に保存される、請求項1、3、及び4のいずれか一項に記載の多部型セルフシーリング水分硬化性シリコーンシーラント組成物。
- 請求項1に記載の組成物の縮合反応生成物である、膨張式物品のための水分硬化セルフシーリングシリコーンシーラント。
- 請求項6に記載の水分硬化セルフシーリングシリコーンシーラントを含む、セルフシーリング膨張式物品。
- タイヤの形態である、請求項7に記載のセルフシーリング膨張式物品。
- a)可撓性かつ気密性の材料から製造され、リムを用いて組立てられるように適合されたタイヤボディと、
b)前記タイヤボディのパンクをシールするように適合された請求項6に記載のシーラントと、
を含むセルフシーリングタイヤである、請求項8に記載のセルフシーリング膨張式物品。 - 耐パンク層を有し、前記耐パンク層は、請求項1〜5のいずれか一項に記載の組成物の硬化から形成されたシーラントの層である、請求項7〜9のいずれか一項に記載のセルフシーリング膨張式物品。
- 前記耐パンク層が、0.3mmを超える厚さを有する、請求項10に記載のセルフシーリング膨張式物品。
- 前記耐パンク層が、0.5mm〜10mmの厚さを有する、請求項10又は11に記載のセルフシーリング膨張式物品。
- 前記耐パンク層が、前記膨張式物品の内壁上に配置されている、請求項10、11、又は12に記載のセルフシーリング膨張式物品。
- 請求項1〜5のいずれか一項に記載の多部型セルフシーリング水分硬化性シリコーンシーラント組成物の、タイヤを修理するための使用。
- 液密及び気密用途における、請求項1〜5のいずれか一項に記載の多部型セルフシーリング水分硬化性シリコーンシーラント組成物の使用。
- 請求項1〜5のいずれか一項に記載の多部型セルフシーリング水分硬化性シリコーンシーラント組成物を用いて製造されたセルフシーリングタイヤ。
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ES2799718T3 (es) | 2020-12-21 |
JP2019524932A (ja) | 2019-09-05 |
KR102041101B1 (ko) | 2019-11-07 |
US10844177B2 (en) | 2020-11-24 |
EP3494176B1 (en) | 2020-05-20 |
JP2020109185A (ja) | 2020-07-16 |
GB201613412D0 (en) | 2016-09-14 |
CN109563345A (zh) | 2019-04-02 |
WO2018024857A1 (en) | 2018-02-08 |
EP3494176A1 (en) | 2019-06-12 |
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