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1.发明授权PROCESSES FOR MAKING SILANE, HYDROPHOBATED SILICA, SILICA MASTERBATCH AND RUBBER PRODUCTS 有权制备硅烷，疏水硅胶，硅胶母粒和橡胶制品的工艺
公开(公告)号：EP2303951B1
公开(公告)日：2018-03-07
申请号：EP09800698.4
申请日：2009-07-23
发明人： WALLEN, Peter J. , HARDIMAN, Christopher, J. , COLVIN, Howard, A. , BOWMAN, Gregory, C. , ROJAS REYNA, Jose, Eduardo
CPC分类号： C08J3/22 , C01P2006/80 , C08J3/2053 , C08J3/215 , C08J3/223 , C08K5/54 , C08K9/06 , C09C1/3081 , Y10T428/2995 , C08L21/00
摘要： The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide. Rubber products, particularly tires, compounded with the inventive silica masterbatch can be processed for a long time before scorching because the silica masterbatch provides a long scorch time.
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公开(公告)号：EP3191528A1
公开(公告)日：2017-07-19
申请号：EP15840937.5
申请日：2015-09-10
CPC分类号： C08C19/22 , B60C1/00 , C08C1/02 , C08C1/14 , C08K5/18 , C08K5/375 , C08L7/02 , C12N9/88 , C12Y402/01092
摘要： A method for stabilizing a natural rubber such as guayule. The method includes the step of introducing at least one of an Extraction Curves for Guayule Rubber Samples amine and a phenolic anti-oxidant, such as MADA, to a latex form of the rubber under conditions such that the anti-oxidant becomes chemically bound to the rubber. The method includes the further step of subsequently treating the rubber to remove at least a substantial portion of entrained resins. The method can yield a rubber composition of, for example, guayule rubber and including an anti-oxidant chemically bound thereto. The resultant rubber can be suitable for use in tire construction.
摘要翻译： 一种稳定天然橡胶如银胶菊的方法。 该方法包括在抗氧化剂与橡胶化学结合的条件下将胺和酚类抗氧化剂如MADA中的至少一种引入橡胶的胶乳形式的步骤。 该方法包括进一步处理橡胶以除去至少大部分夹带树脂的步骤。 该方法可以产生例如银胶菊橡胶的橡胶组合物并且包括化学结合于其上的抗氧化剂。 所得橡胶可适用于轮胎构造。
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3.发明公开PROCESSES FOR MAKING SILANE, HYDROPHOBATED SILICA, SILICA MASTERBATCH AND RUBBER PRODUCTS 有权用于生产硅烷，疏水二氧化硅，二氧化硅母粒和橡胶制品
公开(公告)号：EP2303951A1
公开(公告)日：2011-04-06
申请号：EP09800698.4
申请日：2009-07-23
发明人： WALLEN, Peter J. , HARDIMAN, Christopher, J. , COLVIN, Howard, A. , BOWMAN, Gregory, C. , ROJAS REYNA, Jose, Eduardo
IPC分类号： C08J3/20
CPC分类号： C08J3/22 , C01P2006/80 , C08J3/2053 , C08J3/215 , C08J3/223 , C08K5/54 , C08K9/06 , C09C1/3081 , Y10T428/2995 , C08L21/00
摘要： A process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3- trimethoxysilylpropyl)disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide. Long scorch time of the inventive silica masterbatch allows rubber products, particularly tires, to be compounded at length.
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