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64 条记录 (耗时 0.013 秒)

    Polymer-sand nanocomposite for water shutoff
    1.
    发明授权
    Polymer-sand nanocomposite for water shutoff 有权

    公开(公告)号：US11261367B2

    公开(公告)日：2022-03-01

    申请号：US16854274

    申请日：2020-04-21

    申请人： Saudi Arabian Oil Company ,  Alfaisal University

    发明人： Ayman Almohsin ,  Edreese Alsharaeh ,  Mohammed Abdullah Bataweel

    IPC分类号： C09K8/512 ,  E21B33/138 ,  C09K8/516 ,  C08K3/04 ,  C08K3/11 ,  B29C35/18

    摘要： A method of preparing a polymer-sand nanocomposite for water shutoff. The method includes applying a surface polymerization to sand particles. The surfaced polymerization formed by combining a polymerization initiator dissolved in a solvent with the sand particles to form a precursor sand mixture, combining a co-monomer and additional polymerization initiator in the presence of graphene, where the graphene is not functionalized, to form a precursor polymer mixture, and combining the precursor sand mixture and the precursor polymer mixture to form a sand-copolymer-graphene nanocomposite. The method further includes drying the sand-copolymer-graphene nanocomposite, preparing a polymer hydrogel, and combining the polymer hydrogel and the sand-copolymer-graphene nanocomposite to crosslink the components and form the polymer-sand nanocomposite. The associated method of forming a barrier to shut off or reduce unwanted production of water in a subterranean formation utilizing the polymer-sand nanocomposite is also provided.

    Arrangement applied to an envelope for retreading tyres
    2.
    发明授权
    Arrangement applied to an envelope for retreading tyres 有权

    公开(公告)号：US10994507B2

    公开(公告)日：2021-05-04

    申请号：US15738071

    申请日：2015-06-19

    申请人： BORRACHAS VIPAL S.A.

    发明人： Mauri Roque Ferreto ,  Eleno Rogrigues Vieira ,  Ismael Borges Vieira ,  Leandro Gustavo Guedes ,  Paulo Rampon

    IPC分类号： B29D30/54 ,  B29C35/18

    摘要： This invention provides an envelope configuration for retreading tires using a cold-retreading process. Envelopes formed by two parts are known in the prior art. However, the known sealing means between parts are not satisfactory, either due to sealing problems or due to decreasing the envelope useful life. In order to overcome these limitations, this invention provides an envelope (20) comprised of two parts (22, 24), in which an end region (224a) of a flap (224) of the first part (22) is covered by an end region (244a) of a flap (244) of the second part (24), or vice-versa, in order to form an overlapping joint, in which a free end of the flap (224) of the first part (22) has at least one differentiated cross section (224b) whose thickness is greater than that of the flap (224) of the first part (22), and in which the overlapping joint is covered by an elastic ring (26) that is wide enough to cover said differentiated cross section (224b).

    Shrink-controlled resin composition
    4.
    发明授权
    Shrink-controlled resin composition 失效
    收缩树脂组合物

    公开(公告)号：US5741448A

    公开(公告)日：1998-04-21

    申请号：US615456

    申请日：1996-03-14

    申请人： Dean H. Wiseman

    发明人： Dean H. Wiseman

    IPC分类号： C08L67/06 ,  B29C35/18

    CPC分类号： C08L67/06

    摘要： A shrink resistant resin composition which is curable at room temperature. The composition is (a) a curable unsaturated polyester resin, (b) an accelerator, (c) a low temperature free radical peroxide initiator, and (d) a low profile additive comprising polyolefin powder. The resin composition may be cured at room temperature to provide a molded article which exhibits improved shrink-resistance.

    摘要翻译： 在室温下可固化的抗收缩树脂组合物。 组合物是（a）可固化的不饱和聚酯树脂，（b）促进剂，（c）低温自由基过氧化物引发剂，和（d）包含聚烯烃粉末的低轮廓添加剂。 树脂组合物可以在室温下固化，从而提供一种具有改善的耐收缩性的模塑制品。

    ARRANGEMENT APPLIED TO AN ENVELOPE FOR RETREADING TYRES
    9.
    发明申请
    ARRANGEMENT APPLIED TO AN ENVELOPE FOR RETREADING TYRES 审中-公开

    公开(公告)号：US20180264764A1

    公开(公告)日：2018-09-20

    申请号：US15738071

    申请日：2015-06-19

    申请人： BORRACHAS VIPAL S.A.

    发明人： Mauri ROQUE FERRETO ,  Eleno ROGRIGUES VIEIRA ,  Ismael BORGES VIEIRA ,  Leandro GUSTAVO GUEDES ,  Paulo RAMPON

    IPC分类号： B29D30/54 ,  B29C35/18

    CPC分类号： B29D30/542 ,  B29C35/18 ,  B29D30/54

    摘要： This invention provides an envelope configuration for retreading tires using a cold-retreading process. Envelopes formed by two parts are known in the prior art. However, the known sealing means between parts are not satisfactory, either due to sealing problems or due to decreasing the envelope useful life. In order to overcome these limitations, this invention provides an envelope (20) comprised of two parts (22, 24), in which an end region (224a) of a flap (224) of the first part (22) is covered by an end region (244a) of a flap (244) of the second part (24), or vice-versa, in order to form an overlapping joint, in which a free end of the flap (224) of the first part (22) has at least one differentiated cross section (224b) whose thickness is greater than that of the flap (224) of the first part (22), and in which the overlapping joint is covered by an elastic ring (26) that is wide enough to cover said differentiated cross section (224b).

    Process for producing polymer-covered flexographic printing sleeves
    10.
    发明授权
    Process for producing polymer-covered flexographic printing sleeves 失效
    用于生产聚合物覆盖的柔版印刷套筒的方法

    公开(公告)号：US5544584A

    公开(公告)日：1996-08-13

    申请号：US352955

    申请日：1994-12-09

    申请人： William L. Thompson ,  Mark A. Borski

    发明人： William L. Thompson ,  Mark A. Borski

    IPC分类号： B29C35/18 ,  B29C39/02 ,  B29C39/10 ,  B29C70/72 ,  B41C1/18 ,  B41N1/12

    CPC分类号： B29C39/10 ,  B29C35/18 ,  B29C39/028 ,  B29C70/72 ,  B41C1/182 ,  B29K2075/00 ,  B29L2023/005 ,  B29L2031/324 ,  Y10T29/49563

    摘要： A process for producing a durable, readily-storable, cylindrically-shaped flexographic printing sleeve having inner and an outer cylindrically-shaped walls and a substantially constant cross-sectional inner and outer diameter is provided. The flexographic printing sleeve is readily axially mountable on and dismountable from a complementary cylindrically-shaped printing cylinder having an outer cylindrically shaped wall. The process comprises providing a sleeve body. A layer of a low temperature curable polymeric material is provided to the outer circumferential surface of the sleeve body. The low temperature curable polymeric material is then cured at a temperature not greater than about 150 degrees F. to form a hardened layer of the polymeric material having a substantially uniform degree of hardness without damaging or distorting the sleeve body. A portion of the hardened layer of the polymeric material is removed to produce a flexographic printing sleeve having a thickness of up to about 0.100" and an impression range comprising an engagement distance of at least about 0.375" without any substantial visible reduction in print performance. The print performance comprises a print dot distortion of not more than about 0.0005" in the machine direction and not more than about 0.0002" in the cross machine direction.

    摘要翻译： 提供了一种用于生产具有内圆柱形和外圆柱形壁以及基本上恒定的横截面内外直径的耐用且易于储存的圆柱形柔性版印刷套筒的方法。 柔性版印刷套筒易于轴向安装在具有外圆柱形壁的互补圆柱形印刷滚筒上并可拆卸。 该方法包括提供套筒主体。 将一层低温可固化的聚合物材料提供到套筒主体的外圆周表面。 然后将低温可固化聚合物材料在不大于约150°F的温度下固化，以形成具有基本上均匀程度的硬度的聚合材料的硬化层，而不损坏或扭曲套筒本体。 除去聚合物材料的硬化层的一部分以产生具有高达约0.100“的厚度的柔性版印刷套筒，以及包括至少约0.375”的接合距离的印模范围，而印刷品中没有任何明显的可见减少 性能。 打印性能包括在机器方向上不大于约0.0005“的打印点变形，并且在横向方向上不大于约0.0002”。