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    • 14. 发明授权
    • Pneumatic tire having built-in sealant layer and preparation thereof
    • 具有内置密封剂层的气动轮胎及其制备方法
    • US08316903B2
    • 2012-11-27
    • US11865167
    • 2007-10-01
    • Ramendra Nath MajumdarAaron Scott Puhala
    • Ramendra Nath MajumdarAaron Scott Puhala
    • B60C19/12B29C73/22
    • B60C19/12B29D30/0685B29D30/20B29D2030/069B60C5/14Y10T152/10666Y10T152/10675Y10T152/10684
    • The present invention is directed to a pneumatic tire having a built-in sealant layer and its preparation. In one embodiment, the pneumatic tire includes an outer circumferential rubber tread and a supporting carcass. An optional rubber inner liner is disposed inwardly from the supporting carcass. A built-in sealant layer is disposed inwardly from the rubber inner liner. The built-in sealant layer provides self-sealing properties to the pneumatic tire. A gas permeable layer is situated adjacent an innermost rubber inner liner and the built-in sealant layer. The innermost rubber inner liner has a plurality of spaced apart openings extending therethrough, which are covered by the gas permeable layer. The tire, with its innermost inner liner with holes and the gas permeable layer, allows for elimination or reduction in blister formation in the tire by permitting gas from the built-in sealant layer to escape.
    • 本发明涉及一种具有内置密封剂层的充气轮胎及其制备方法。 在一个实施例中,充气轮胎包括外周橡胶胎面和支撑胎体。 可选的橡胶内衬从支撑体向内设置。 内置的密封剂层从橡胶内衬内侧设置。 内置的密封剂层为充气轮胎提供自密封性能。 透气层位于最内侧的橡胶内衬和内置的密封层附近。 最里面的橡胶内衬具有多个间隔开的开口,这些开口被透气层覆盖。 具有孔的最内侧内衬和透气层的轮胎允许通过允许来自内置密封剂层的气体逸出来消除或减少轮胎中的气泡形成。
    • 19. 发明授权
    • Pneumatic tire having built-in sealant layer and preparation thereof
    • 具有内置密封剂层的气动轮胎及其制备方法
    • US08617333B2
    • 2013-12-31
    • US11858491
    • 2007-09-20
    • Ramendra Nath MajumdarAaron Scott Puhala
    • Ramendra Nath MajumdarAaron Scott Puhala
    • B60C19/12B29C73/22
    • B29C73/163B29C73/20B29D30/0685B29D2030/069B29D2030/0691B29D2030/0695B29L2030/00B60C19/12
    • In one embodiment, a pneumatic tire having a built-in sealant layer, before cure, includes an unvulcanized pneumatic tire assembly having an outer circumferential rubber tread and a supporting carcass. A precursor sealant layer is situated between the supporting carcass and an innermost rubber inner liner. The precursor sealant layer includes a non-flowing polyurethane composition that is neither gel-like nor tacky and is self-supporting. The precursor sealant layer, during curing of the unvulcanized pneumatic tire assembly, thermally degrades so as to provide a gel-like and tacky, self-healing polyurethane composition which defines the built-in sealant layer. The resulting tire, with its innermost polyurethane composition, allows for elimination or reduction in blister formation by reducing or elimination the amount of gases typically given off by organoperoxide-butyl based sealant layers, such as when the tire is at its running temperature. Consequently, the thickness of the inner liner may be reduced.
    • 在一个实施例中,具有内置密封剂层的充气轮胎在固化之前包括具有外周橡胶胎面和支撑胎体的未硫化充气轮胎组件。 前体密封剂层位于支撑胎体和最内侧的橡胶内衬之间。 前体密封剂层包括非流动性聚氨酯组合物,其既不凝胶也不发粘并且是自支撑的。 前体密封剂层在未硫化充气轮胎组件的固化期间热降解,以提供限定内置密封剂层的凝胶状和粘性的自愈合聚氨酯组合物。 所得到的具有其最内层聚氨酯组合物的轮胎允许通过减少或消除通常由有机过氧化物 - 丁基基密封剂层(例如当轮胎处于其运行温度)时排出的气体量来消除或减少气泡形成。 因此,可以减小内衬的厚度。