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8 条记录 (耗时 0.017 秒)

    Synthesis of siloxane resins
    1.
    发明申请
    Synthesis of siloxane resins 审中-公开
    硅氧烷树脂的合成

    公开(公告)号：US20050003215A1

    公开(公告)日：2005-01-06

    申请号：US10830465

    申请日：2004-04-21

    申请人： Nigel Hacker ,  Lisa Figge ,  Scott Lefferts

    发明人： Nigel Hacker ,  Lisa Figge ,  Scott Lefferts

    IPC分类号： C08G77/08 ,  C08G77/12 ,  B32B9/04 ,  C08G77/04 ,  C08L83/00

    CPC分类号： C08G77/08 ,  C08G77/12 ,  Y10T428/31663

    摘要： Novel processes for preparing hydridosiloxane and organohydridosiloxane resins are disclosed. The processes of the invention broadly provide for the steps of contacting a silane monomer with a phase transfer catalyst in the presence of a reaction mixture that includes a nonpolar, e.g., hydrocarbon, solvent, and a polar solvent, e.g., alcohol and water. The process is conducted under conditions effective to catalytically convert said silane monomer into hydridosiloxane and organohydridosiloxane resins. Recovery of the products is advantageously aided by the ease of separating the phase transfer catalyst from the dual phase reaction mixture by separating the immiscible polar solvent carrying the catalyst from the nonpolar solvent that carries the product. Hydridosiloxane and organohydridosiloxane resins produced by the processes of the invention are also provided.

    摘要翻译： 公开了制备氢硅氧烷和有机氢硅氧烷树脂的新方法。 本发明的方法广泛地提供了在包含非极性例如烃，溶剂和极性溶剂如醇和水的反应混合物存在下使硅烷单体与相转移催化剂接触的步骤。 该方法在有效地将所述硅烷单体催化转化成氢硅氧烷和有机氢硅氧烷树脂的条件下进行。 通过将携带催化剂的不混溶的极性溶剂与携带产物的非极性溶剂分离，可有利地辅助相分离催化剂与双相反应混合物的分离。 还提供了通过本发明的方法制备的氢硅氧烷和有机氢硅氧烷树脂。

    Nanoporous materials and methods of formation thereof
    2.
    发明申请
    Nanoporous materials and methods of formation thereof 审中-公开
    纳米材料及其形成方法

    公开(公告)号：US20070100109A1

    公开(公告)日：2007-05-03

    申请号：US10520252

    申请日：2002-08-15

    申请人： Nigel Hacker ,  Scott Leffert ,  Lisa Figge ,  Richard Spear ,  William Bedwell ,  Teresa Ramos

    发明人： Nigel Hacker ,  Scott Leffert ,  Lisa Figge ,  Richard Spear ,  William Bedwell ,  Teresa Ramos

    IPC分类号： C08G77/12

    CPC分类号： H01L21/02126 ,  C08G77/12 ,  C08G77/20 ,  H01B3/46 ,  H01L21/02203 ,  H01L21/02216 ,  H01L21/02282 ,  H01L21/31695

    摘要： Low dielectric materials are described herein that comprise a plurality of pores or nanopores in addition to the ultrananopores. It is further contemplated that the low dielectric materials described herein will have a dielectric constant of less than about 3. The dielectric materials are fromed from polymer compositions, wherein the polymer compositions comprise a plurality of monomers and wherein at least one monomer comprises a radical precursor bonded to a structural precursor. Further, methods of forming dielectric materials from polymer compositions are presented. The figure shows the chemical structure for a methyl/t-butyl Low organic Content/Low Organic Siloxane Polymer.

    摘要翻译： 本文描述的低电介质材料除了超极子纳米孔之外还包含多个孔或纳米孔。 进一步预期，本文所述的低电介质材料将具有小于约3的介电常数。介电材料来自聚合物组合物，其中聚合物组合物包含多个单体，并且其中至少一个单体包含自由基前体 结合到结构前体。 此外，提出了从聚合物组合物形成电介质材料的方法。 该图显示了甲基/叔丁基低有机含量/低有机硅氧烷聚合物的化学结构。

    Organohydridosiloxane resins with low organic content
    3.
    发明授权
    Organohydridosiloxane resins with low organic content 失效
    有机硅含量低的有机硅硅氧烷树脂

    公开(公告)号：US06359099B1

    公开(公告)日：2002-03-19

    申请号：US09610567

    申请日：2000-07-03

    申请人： Nigel P. Hacker ,  Scott Lefferts ,  Lisa Figge

    发明人： Nigel P. Hacker ,  Scott Lefferts ,  Lisa Figge

    IPC分类号： C08G7712

    CPC分类号： C08G77/12 ,  C08G77/04

    摘要： An organohydridosiloxane polymer having a cage conformation, between approximately 0.1 to 40 mole percent carbon-containing substituent, and a dielectric constant of less than about 3.0 is disclosed. Each silicon atom of the cage polymer is bonded to at least three oxygen atoms and to either a hydrogen atom or an organic substituent. By providing such a caged structure having essentially no hydroxyl or alkoxy substituents, either on the polymer backbone or at terminal silicon atoms, essentially no chain lengthening polymerization can occur in solution. Such organohydridosiloxane resins having a molecular weight in the range from about 400 to about 200,000 atomic mass units were formed using a dual phase solvent system and either a solid phase or a phase transfer catalyst to assist the condensation of hydridotrihalosilane with at least one organotrihalosilane.

    摘要翻译： 公开了具有笼构象的有机氢硅氧烷聚合物，约0.1-40摩尔％的含碳取代基，介电常数小于约3.0。 笼状聚合物的每个硅原子与至少三个氧原子和氢原子或有机取代基结合。 通过提供这样一种基本上没有羟基或烷氧基取代基的笼式结构，无论是在聚合物主链上还是在末端硅原子上，基本上不会在溶液中发生链延长聚合。 使用双相溶剂系统和固相或相转移催化剂形成分子量在约400至约200,000原子质量单位范围内的这种有机氢硅氧烷树脂，以有助于氢三卤代硅烷与至少一种有机三卤代硅烷的缩合。

    Organohydridosiloxane resins with low organic content
    5.
    发明授权
    Organohydridosiloxane resins with low organic content 失效
    有机硅含量低的有机硅硅氧烷树脂

    公开(公告)号：US06218497B1

    公开(公告)日：2001-04-17

    申请号：US09044831

    申请日：1998-03-20

    申请人： Nigel P. Hacker ,  Scott Lefferts ,  Lisa Figge

    发明人： Nigel P. Hacker ,  Scott Lefferts ,  Lisa Figge

    IPC分类号： C08G7712

    CPC分类号： C08G77/12 ,  C08G77/04

    摘要： An organohydridosiloxane polymer having a cage conformation, between approximately 0.1 to 40 mole percent carbon-containing substituent, and a dielectric constant of less than about 3.0 is disclosed. Each silicon atom of the cage polymer is bonded to at least three oxygen atoms and to either a hydrogen atom or an organic substituent. By providing such a caged structure having essentially no hydroxyl or alkoxy substituents, either on the polymer backbone or at terminal silicon atoms, essentially no chain lengthening polymerization can occur in solution. Such organohydridosiloxane resins having a molecular weight in the range from about 400 to about 200,000 atomic mass units were formed using a dual phase solvent system and either a solid phase or a phase transfer catalyst to assist the condensation of hydridotrihalosilane with at least one organotrihalosilane.

    摘要翻译： 公开了具有笼构象的有机氢硅氧烷聚合物，约0.1-40摩尔％的含碳取代基，介电常数小于约3.0。 笼状聚合物的每个硅原子与至少三个氧原子和氢原子或有机取代基结合。 通过提供这样一种基本上没有羟基或烷氧基取代基的笼式结构，无论是在聚合物主链上还是在末端硅原子上，基本上不会在溶液中发生链延长聚合。 使用双相溶剂系统和固相或相转移催化剂形成分子量在约400至约200,000原子质量单位范围内的这种有机氢硅氧烷树脂，以有助于氢三卤代硅烷与至少一种有机三卤代硅烷的缩合。