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公开(公告)号：EP3875268A1
公开(公告)日：2021-09-08
申请号：EP19880437.9
申请日：2019-10-28
发明人： URATA Tomohiro
摘要： Provided is a tire that prevents a polyurethane foam layer from discoloring to brown. A tire comprises: a polyurethane foam layer laminated on an outer layer of the tire with a barrier layer therebetween, wherein the polyurethane foam layer contains a polyurethane foam, and the barrier layer is formed from a rubber composition containing butyl rubber as a rubber component.
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公开(公告)号：EP4428187A1
公开(公告)日：2024-09-11
申请号：EP22889682.5
申请日：2022-09-22
发明人： URATA Tomohiro
摘要： To solve a problem of providing a conductive rubber composition for sensing that when adopted in a rubber product, enables high-accuracy detection of the magnitude of strain of the rubber product without the use of a sensor, a conductive rubber composition for sensing contains a diene rubber, carbon black, and an antioxidant, wherein the antioxidant satisfies a relationship in formula (i): HeavyAtomCount/MolWt ≤ 5.46 × MaxPartialCharge/MolWt + 0.071. In formula (i), HeavyAtomCount indicates a number of non-hydrogen atoms in the antioxidant, MolWt indicates molecular weight of the antioxidant, and MaxPartialCharge indicates partial charge (value of +δ) of an atom that is most positively charged in the antioxidant.
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3.发明公开
公开(公告)号：EP3985084A1
公开(公告)日：2022-04-20
申请号：EP20822556.5
申请日：2020-06-11
IPC分类号： C09K15/18 , C08K5/18 , C08L27/12 , C08L83/04 , C08L101/00
摘要： Provided is an anti oxidant supply composition that enables replenishment of a rubber article with anti oxidant without taking a long time. An anti oxidant supply composition comprises: a base material and 5 mass% or more of anti oxidant, wherein a solubility parameter (SP value) of the base material is less than 7.8 (cal/cm 3 ) 1/2 .
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公开(公告)号：EP3530691A1
公开(公告)日：2019-08-28
申请号：EP17861218.0
申请日：2017-10-12
发明人： URATA Tomohiro , TAHARA Seiichi
摘要： Provided is a rubber composition in which static ozone resistance, dynamic ozone resistance and discoloration resistance are highly balanced. Also provided is a tire in which static ozone resistance, dynamic ozone resistance and discoloration resistance are highly balanced. The rubber composition comprises a rubber component, a petroleum wax, and an antidegradant, wherein the petroleum wax comprises a C20-C34 hydrocarbon component and a C35 or higher hydrocarbon component, and a proportion of the C20-C34 hydrocarbon component is 15% by mass to 30% by mass and a proportion of the C35 or higher hydrocarbon component is 70% by mass to 85% by mass, based on a total mass of the C20-C34 hydrocarbon component and the C35 or higher hydrocarbon component.
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