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    Preparation of thermoplastic elastomers by dynamic vulcanization in multi-screw extruders
    1.
    发明授权
    Preparation of thermoplastic elastomers by dynamic vulcanization in multi-screw extruders 有权
    通过动态硫化在多螺杆挤出机中制备热塑性弹性体

    公开(公告)号：US07655728B2

    公开(公告)日：2010-02-02

    申请号：US11167339

    申请日：2005-06-27

    申请人： Hari P. Nadella ,  Jianya Cheng ,  Ronald DeYoung ,  Kuo-Shein Shen

    发明人： Hari P. Nadella ,  Jianya Cheng ,  Ronald DeYoung ,  Kuo-Shein Shen

    IPC分类号： C08L23/00 ,  C08L23/10 ,  C08F8/00

    CPC分类号： B29C47/38 ,  B29C47/0009 ,  B29C47/402 ,  B29C47/42 ,  B29C47/6031 ,  B29C47/605 ,  B29C47/6056 ,  C08L23/10 ,  C08L23/16 ,  C08L2312/08 ,  C08L2666/06

    摘要： The invention relates to a method of preparing a thermoplastic vulcanizate comprising: a) melt processing a blend of thermoplastic polymer and vulcanizable elastomer in a multi-screw extruder having at least three intermeshing screws, wherein said screws have 3-170 mixing zones, and said extruder having a L/D ratio of 15-100, and a screw profile that has 3 to 17 meshes per L/D; b) adding at least one curing agent to the melt-processed blend of a) in at least one location in the first 46% of the length of said extruder, or adding at least one curing agent to the melt-processed blend of a) in a second extruder, so as to initiate curing of the blend: and, curing at least partially said elastomer by reactive melt processing. Improved processing, reaction kinetics and efficiencies are achieved, as well as thermoplastic vulcanizate products having decreased weight gain when placed in mineral oils.

    摘要翻译： 本发明涉及一种制备热塑性硫化橡胶的方法，包括：a）在具有至少三个啮合螺钉的多螺杆挤出机中熔融加工热塑性聚合物和可硫化弹性体的共混物，其中所述螺杆具有3-170个混合区，并且所述 L / D比为15-100的挤出机和每L / D具有3至17目的螺杆型材; b）在所述挤出机的长度的前46％的至少一个位置向a）的熔融加工混合物中加入至少一种固化剂，或向熔融加工的混合物中加入至少一种固化剂，a） 在第二挤出机中，以引发共混物的固化;以及通过反应性熔体加工至少部分地固化所述弹性体。 实现了改进的加工，反应动力学和效率，以及当放置在矿物油中时具有降低的重量增加的热塑性硫化产品。

    Preparation of thermoplastic elastomers by dynamic vulcanization in multi-screw extruders
    2.
    发明申请
    Preparation of thermoplastic elastomers by dynamic vulcanization in multi-screw extruders 有权
    通过动态硫化在多螺杆挤出机中制备热塑性弹性体

    公开(公告)号：US20060293457A1

    公开(公告)日：2006-12-28

    申请号：US11167339

    申请日：2005-06-27

    申请人： Hari Nadella ,  Jianya Cheng ,  Ronald DeYoung ,  Kuo-Shein Shen

    发明人： Hari Nadella ,  Jianya Cheng ,  Ronald DeYoung ,  Kuo-Shein Shen

    IPC分类号： C08F8/00

    CPC分类号： B29C47/38 ,  B29C47/0009 ,  B29C47/402 ,  B29C47/42 ,  B29C47/6031 ,  B29C47/605 ,  B29C47/6056 ,  C08L23/10 ,  C08L23/16 ,  C08L2312/08 ,  C08L2666/06

    摘要： The invention relates to a method of preparing a thermoplastic vulcanizate comprising: a) melt processing a blend of thermoplastic polymer and vulcanizable elastomer in a multi-screw extruder having at least three intermeshing screws, wherein said screws have 3-170 mixing zones, and said extruder having a L/D ratio of 15-100, and a screw profile that has 3 to 17 meshes per L/D; b) adding at least one curing agent to the melt-processed blend of a) in at least one location in the first 46% of the length of said extruder, or adding at least one curing agent to the melt-processed blend of a) in a second extruder, so as to initiate curing of the blend: and, curing at least partially said elastomer by reactive melt processing. Improved processing, reaction kinetics and efficiencies are achieved, as well as thermoplastic vulcanizate products having decreased weight gain when placed in mineral oils.

    摘要翻译： 本发明涉及一种制备热塑性硫化橡胶的方法，包括：a）在具有至少三个啮合螺钉的多螺杆挤出机中熔融加工热塑性聚合物和可硫化弹性体的共混物，其中所述螺杆具有3-170个混合区，并且所述 L / D比为15-100的挤出机和每L / D具有3至17目的螺杆型材; b）在所述挤出机的长度的前46％的至少一个位置向a）的熔融加工混合物中加入至少一种固化剂，或向熔融加工的混合物中加入至少一种固化剂，a） 在第二挤出机中，以引发共混物的固化;以及通过反应性熔体加工至少部分地固化所述弹性体。 实现了改进的加工，反应动力学和效率，以及当放置在矿物油中时具有降低的重量增加的热塑性硫化产品。

    Dynamic vulcanization process for preparing thermoplastic elastomers
    3.
    发明申请
    Dynamic vulcanization process for preparing thermoplastic elastomers 有权
    制备热塑性弹性体的动态硫化工艺

    公开(公告)号：US20060293454A1

    公开(公告)日：2006-12-28

    申请号：US11375737

    申请日：2006-03-15

    申请人： Hari Nadella ,  Ronald DeYoung ,  Jianya Cheng

    发明人： Hari Nadella ,  Ronald DeYoung ,  Jianya Cheng

    IPC分类号： C08F8/00

    CPC分类号： C08L23/16 ,  C08L23/10 ,  C08L91/06 ,  C08L2312/00 ,  C08L2666/06

    摘要： Described in one aspect is a process for preparing a low durometer thermoplastic vulcanizate composition comprising melt blending one or more thermoplastic polymer(s) with a cross-linkable elastomer under conditions of dynamic vulcanization; adding at or after the start of the melt blending at least one curative agent for the elastomer so as to cross-link the elastomer during the melt blending; introducing process oil into the melt blending before, during and/or after the addition of the curative agent; and, extruding a fully crosslinked thermoplastic vulcanizate having a Shore A Hardness of less than 25.

    摘要翻译： 一方面描述了一种制备低硬度热塑性硫化橡胶组合物的方法，其包括在动态硫化条件下将一种或多种热塑性聚合物与可交联弹性体熔融共混; 在熔融共混开始时或之后添加至少一种用于弹性体的固化剂，以便在熔融共混期间使弹性体交联; 在加入治疗剂之前，期间和/或之后将加工油引入熔融共混中; 并且挤出具有小于25的肖氏A硬度的完全交联的热塑性硫化橡胶。

    Dynamic vulcanization process for preparing thermoplastic elastomers
    4.
    发明授权
    Dynamic vulcanization process for preparing thermoplastic elastomers 有权
    制备热塑性弹性体的动态硫化工艺

    公开(公告)号：US08653170B2

    公开(公告)日：2014-02-18

    申请号：US11375737

    申请日：2006-03-15

    申请人： Hari Prasad Nadella ,  Ronald DeYoung ,  Jianya Cheng

    发明人： Hari Prasad Nadella ,  Ronald DeYoung ,  Jianya Cheng

    IPC分类号： C08F8/00

    CPC分类号： C08L23/16 ,  C08L23/10 ,  C08L91/06 ,  C08L2312/00 ,  C08L2666/06

    摘要： Described in one aspect is a process for preparing a low durometer thermoplastic vulcanizate composition comprising melt blending one or more thermoplastic polymer(s) with a cross-linkable elastomer under conditions of dynamic vulcanization; adding at or after the start of the melt blending at least one curative agent for the elastomer so as to cross-link the elastomer during the melt blending; introducing process oil into the melt blending before, during and/or after the addition of the curative agent; and, extruding a fully crosslinked thermoplastic vulcanizate having a Shore A Hardness of less than 25.

    摘要翻译： 一方面描述了一种制备低硬度热塑性硫化橡胶组合物的方法，其包括在动态硫化条件下将一种或多种热塑性聚合物与可交联弹性体熔融共混; 在熔融共混开始时或之后添加至少一种用于弹性体的固化剂，以便在熔融共混期间使弹性体交联; 在加入治疗剂之前，期间和/或之后将加工油引入熔融共混中; 并且挤出具有小于25的肖氏A硬度的完全交联的热塑性硫化橡胶。