PROBLEM TO BE SOLVED: To provide a method for measuring reaction amount of a silane coupling agent having a >CH-CH-O- bond, a rubber composition with defined reaction amount of the silane coupling agent using the method and a pneumatic tire manufactured by using the rubber composition.SOLUTION: This method for measuring the reaction amount of a silane coupling agent from an intensity ratio obtained by measuring solidC-NMR of a rubber composition by blending silica and the silane coupling agent containing a >CH-CH-O- bond and calculating the intensity ratio between a double bond carbon peak of a rubber molecule and a peak of methylene carbon neighboring oxygen in the >CH-CH-O- bond observed at 62 to 68 ppm from the obtainedC-NMR spectrum.SELECTED DRAWING: Figure 1
【課題】>CH−CH2−O−結合を有するシランカップリング剤の反応量を定量する方法、該方法を用いて該シランカップリング剤の反応量を規定したゴム組成物、及び該ゴム組成物を用いて作製した空気入りタイヤを提供する。【解決手段】シリカと、>CH−CH2−O−結合を有するシランカップリング剤とを配合したゴム組成物の固体13C−NMRを測定し、得られた13C−NMRスペクトルから、ゴム分子の二重結合炭素ピークと、62〜68ppmで観測される上記>CH−CH2−O−結合中の酸素に隣接したメチレン炭素ピークとの強度比を算出し、得られた強度比から、上記シランカップリング剤の反応量を定量する方法に関する。【選択図】図1
METHOD FOR MEASURING REACTION AMOUNT OF SILANE COUPLING HAVING >CH-CH2-O- BOND, RUBBER COMPOSITION WITH DEFINED REACTION AMOUNT OF THE SILANE COUPLING AGENT USING THE METHOD AND PNEUMATIC TIRE MANUFACTURED BY USING THE RUBBER COMPOSITION
>CH−CH2−O−結合を有するシランカップリング剤の反応量を定量する方法、該方法を用いて該シランカップリング剤の反応量を規定したゴム組成物、及び該ゴム組成物を用いて作製した空気入りタイヤ
2017-10-19
Patent
Electronic Resource
Japanese
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES |
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