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    Pneumatic tire with depolymerized butyl rubber-based built-in sealant prepared with activated organoperoxide
    2.
    发明授权
    Pneumatic tire with depolymerized butyl rubber-based built-in sealant prepared with activated organoperoxide 有权
    气动轮胎采用解聚丁基橡胶为主的内置密封胶，用活性有机过氧化物制成

    公开(公告)号：US07674344B2

    公开(公告)日：2010-03-09

    申请号：US11212525

    申请日：2005-08-26

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

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

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

    CPC classification number: B29C73/22 ,  B29C73/163 ,  B29L2030/00 ,  Y10T152/10666 ,  Y10T152/10675 ,  Y10T152/10684

    Abstract: 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.

    Abstract translation: 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。

    Preparation of silica-rich rubber composition by sequential mixing with maximum mixing temperature limitations
    3.
    发明授权
    Preparation of silica-rich rubber composition by sequential mixing with maximum mixing temperature limitations 有权
    通过连续混合制备富含二氧化硅的橡胶组合物，具有最大混合温度限制

    公开(公告)号：US07122586B2

    公开(公告)日：2006-10-17

    申请号：US10389046

    申请日：2003-03-14

    Applicant: Paul Harry Sandstrom ,  John Eugene Varner ,  Bernard Matthew Bezilla, Jr.

    Inventor： Paul Harry Sandstrom ,  John Eugene Varner ,  Bernard Matthew Bezilla, Jr.

    IPC: C08J3/20 ,  C08K3/24 ,  C08K3/36 ,  C08C19/20

    CPC classification number: C08K3/36 ,  B29B7/005 ,  B29B7/7495 ,  B29C73/163 ,  B29K2021/00 ,  B29L2030/00 ,  B60C1/00 ,  C08J3/203 ,  C08J2321/00 ,  C08K5/548 ,  C08L21/00 ,  C08L15/00

    Abstract: The invention relates to preparation of silica-rich rubber compositions by a sequence of sequential mixing steps conducted in internal rubber mixer(s) with individual maximum temperature limitations. The mixing steps are comprised of at least two non-productive mixing steps followed by a productive mixing step. The non-productive mixing steps themselves are comprised of at least one preliminary non-productive mixing step followed by a final non-productive mixing step. Elastomer, silica and coupling agent are added in at least one of said preliminary non-productive mixing steps to the exclusion of said final non-productive mixing step and said productive mixing step. Sulfur and sulfur vulcanization accelerator(s) are added in said productive mixing step to the exclusion of said non-productive mixing steps. The preliminary non-productive mixing step(s) are individually conducted to a maximum mixing temperature in a range of from about 150° C. to about 180° followed by the final non-productive mixing step to a reduced maximum mixing temperature in a range of from about 90° C. to about 130° C. The maximum mixing temperature of said final non-productive mixing step is at least 20° C. lower than the maximum temperature for said preliminary non-productive mixing stage(s). The productive mixing step is conducted to a maximum temperature in a range of from about 90° C. to about 120° C. The rubber composition is removed from its respective internal rubber mixer and cooled to below 40° C. between said mixing steps. The invention is further intended to relate to a rubber composition prepared by such mixing process and to a tire having at least one component comprised of such rubber composition.

    Abstract translation: 本发明涉及通过在具有单独的最大温度限制的内部橡胶混合器中进行的连续混合步骤的顺序来制备富含二氧化硅的橡胶组合物。 混合步骤包括至少两个非生产性混合步骤，随后是生产性混合步骤。 非生产性混合步骤本身包括至少一个初步非生产性混合步骤，随后是最终的非生产性混合步骤。 在至少一个所述初步非生产性混合步骤中加入弹性体，二氧化硅和偶联剂，排除所述最终非生产性混合步骤和所述生产混合步骤。 在所述生产性混合步骤中加入硫和硫硫化促进剂以排除所述非生产性混合步骤。 初步的非生产性混合步骤分别进行至约150℃至约180℃的最大混合温度，随后进行最终的非生产性混合步骤，使得最大混合温度在一定范围内降低 约90℃至约130℃。所述最终非生产性混合步骤的最大混合温度比所述初步非生产性混合阶段的最高温度低至少20℃。 生产混合步骤进行到约90℃至约120℃范围内的最高温度。将橡胶组合物从其相应的内部橡胶混合器中除去并在所述混合步骤之间冷却至低于40℃。 本发明进一步旨在涉及通过这种混合方法制备的橡胶组合物和具有至少一种由这种橡胶组合物组成的组分的轮胎。

    Method for evaluating and controlling a mixing process
    4.
    发明授权
    Method for evaluating and controlling a mixing process 有权
    评估和控制混合过程的方法

    公开(公告)号：US06817748B2

    公开(公告)日：2004-11-16

    申请号：US10288179

    申请日：2002-11-05

    Applicant: John Richard Campanelli ,  Cigdem Gurer ,  Terry Lee Rose ,  John Eugene Varner

    Inventor： John Richard Campanelli ,  Cigdem Gurer ,  Terry Lee Rose ,  John Eugene Varner

    IPC: B29B772

    CPC classification number: B29B7/286 ,  B29B7/28 ,  B29B7/283

    Abstract: A method for evaluating and controlling a mixing process for polymer-based compounds includes the steps: obtaining initial starting conditions and values for viscosity dependent parameters; increasing batch temperature by a differential amount; calculating mixing parameters such as batch temperature, dispersion, viscosity, and torque based upon fundamental kinetic, thermodynamic, and theological models; determining whether an endpoint or end points of one or more mixing parameters has been achieved; and changing one or more conditions so as to achieve the desired endpoint(s).

    Abstract translation: 用于评价和控制聚合物类化合物的混合方法的方法包括以下步骤：获得初始起始条件和粘度依赖参数的值; 增加批量温度差异量; 根据基本动力学，热力学和神学模型计算混合参数，如批量温度，分散度，粘度和扭矩; 确定一个或多个混合参数的端点或终点是否已经实现; 并改变一个或多个条件以达到期望的终点。

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