公开(公告)号：US07674344B2

公开(公告)日：2010-03-09

申请号：US11212525

申请日：2005-08-26

申请人： Richard Michael D'Sidocky ,  Jennifer Elizabeth Wall ,  John Eugene Varner ,  Denise Jeannette Keith ,  Joseph Alan Incavo ,  Donald Ray Lay

发明人： Richard Michael D'Sidocky ,  Jennifer Elizabeth Wall ,  John Eugene Varner ,  Denise Jeannette Keith ,  Joseph Alan Incavo ,  Donald Ray Lay

IPC分类号： B60C5/00 ,  B60C5/12 ,  B60C5/14 ,  B29D30/00 ,  B29D30/06

CPC分类号： B29C73/22 ,  B29C73/163 ,  B29L2030/00 ,  Y10T152/10666 ,  Y10T152/10675 ,  Y10T152/10684

摘要： The present invention relates to a pneumatic tire with a built-in sealant layer comprised of a depolymerized butyl rubber based sealant precursor. The butyl rubber of the built-in sealant precursor composition is depolymerized in situ within the tire with an activated free radical generating organoperoxide. The organoperoxide is activated with a 2,2,6,6-tetra alkyl piperidine hindered amine. Representative of such hindered amines are, for example, a poly[[6-[1,1,3,3,-tetramethylbutyl)amino]-s-triazine-2,4-diyl][2,2,6,6,-tetramethyl-4-piperidyl)imino]hexamethylene[(2,2,6,6-tetramethyl-4-piperidyl)imino]] compound. The sealant layer, if desired, may be of a color which contrasts with black. For such purpose the sealant layer may contain a colorant of a non-black color to a substantial exclusion of carbon black. The butyl rubber-based sealant precursor is built into the tire as a layer to form a tire assembly wherein the butyl rubber-based composite portion of the sealant precursor layer is at least partially depolymerized by a said activated organoperoxide during a subsequent curing of the tire at an elevated temperature in a suitable mold to form the tire having the resultant built-in sealant layer. The sealant composition may additionally contain conventional clay, exfoliated intercalated clay platelets and/or calcium carbonate.

摘要翻译： 本发明涉及具有由解聚的丁基橡胶基密封剂前体构成的内置密封剂层的充气轮胎。 内置的密封剂前体组合物的丁基橡胶在轮胎内原位与活化的自由基产生有机过氧化物解聚。 有机过氧化物用2,2,6,6-四烷基哌啶受阻胺活化。 这种受阻胺的代表是例如聚[[6- [1,1,3,3 - 四甲基丁基]氨基] -s-三嗪-2,4-二基] [2,2,6,6， - 四甲基-4-哌啶基）亚氨基]六亚甲基[（2,2,6,6-四甲基-4-哌啶基）亚氨基]]化合物。 如果需要，密封剂层可以是与黑色相反的颜色。 为了这个目的，密封剂层可以包含非黑色的着色剂，实际上排除了炭黑。 将基于丁基橡胶的密封剂前体作为一层形成轮胎组件，其中密封剂前体层的基于丁基橡胶的复合部分在随后的轮胎固化期间被所述活化的有机过氧化物部分解聚 在合适的模具中在高温下形成具有所得内置密封剂层的轮胎。 密封剂组合物可以另外包含常规粘土，剥离的插层粘土片晶和/或碳酸钙。