Complexes of mid-transition metals and unsaturated nitrogenous ligands as single-site catalysts
    2.
    发明授权
    Complexes of mid-transition metals and unsaturated nitrogenous ligands as single-site catalysts 失效
    中间过渡金属和不饱和含氮配体的复合物作为单中心催化剂

    公开(公告)号:US06355746B1

    公开(公告)日:2002-03-12

    申请号:US09414132

    申请日:1999-10-06

    IPC分类号: C08F422

    摘要: Novel compounds are provided which are useful as catalysts, particularly in the polymerization of addition polymerizable monomers such as olefinic or vinyl monomers. The compounds are complexes of a mid-transition metal coordinated to at least two ligands, at least one of which is an unsaturated nitrogenous ligand. Depending on ligand substitution, stereospecific catalysts can be provided, including isospecific catalysts and syndiospecific catalysts. Catalyst systems containing the novel compounds in combination with a catalyst activator are provided as well, as are methods of using the novel compounds in the preparation of polyolefins.

    摘要翻译: 提供了可用作催化剂的新型化合物,特别是在可加聚单体如烯属或乙烯基单体的聚合中。 这些化合物是与至少两个配体配位的中间过渡金属的络合物,其中至少一个是不饱和含氮配体。 取决于配体取代,可以提供立体特异性催化剂,包括异相催化剂和间同立构催化剂。 还提供了含有新型化合物与催化剂活化剂组合的催化剂体系,以及在制备聚烯烃中使用新化合物的方法。

    Reinforced wallboard
    4.
    发明授权
    Reinforced wallboard 有权
    钢筋墙板

    公开(公告)号:US06841232B2

    公开(公告)日:2005-01-11

    申请号:US10351675

    申请日:2003-01-23

    摘要: A reinforced wallboard core is prepared from a slurry comprising a mixture of β-calcium sulfate hemihydrate, a cellulose ether additive other than CMC and an amount of water that is sufficient to form a slurry and resulting in a wallboard density of less than 0.8 g/cc. The β-calcium sulfate hemihydrate is hydrated by the water forming a wallboard core reinforced by the cellulose ether additive. The cellulose ether, having a molecular weight of at least about 20,000 and a viscosity grade of at least about 100 cps, is selected to give the reinforced wallboard core improved nail pull resistance and greater flexural strength than unreinforced wallboard of the same density. The reinforced wallboard core may be used for reduced-paper wallboard and/or for lightweight wallboard, for example.

    摘要翻译: 由包含β-硫酸钙半水合物,除CMC以外的纤维素醚添加剂的混合物和足以形成浆料的水的量的浆料制备增强的墙板芯,并导致壁板密度小于0.8g / cc。 β-硫酸钙半水合物通过水形成由纤维素醚添加剂增强的墙板芯水合。 选择具有至少约20,000的分子量和至少约100cps的粘度等级的纤维素醚,以使得增强的墙板芯能够提高相对于相同密度的非增强墙板的拔甲力和抗弯强度。 例如,加强墙板芯可用于减薄纸墙板和/或用于轻质墙板。

    Transition metal complexes in the controlled synthesis of polyolefins substituted with functional groups
    6.
    发明授权
    Transition metal complexes in the controlled synthesis of polyolefins substituted with functional groups 失效
    过渡金属络合物在被官能团取代的聚烯烃的控制合成中

    公开(公告)号:US07037990B2

    公开(公告)日:2006-05-02

    申请号:US10336666

    申请日:2003-01-03

    摘要: A method is provided for the polymerization of olefins substituted with a functional group using a transition metal catalyst that, by virtue of one or more stabilizing groups incorporated within the catalyst structure, “fixes” the stereoconfiguration of each olefinic monomer relative to the transition metal complex during each successive reaction in the polymerization process. The invention substantially reduces the likelihood of olefin rearrangement at the active site of the catalyst during polymerization. In one particular embodiment, the functional group is a polar, electron-donating group and the stabilizing group is a Lewis acid substituent; examples of polymers that can be prepared with such a system include poly(vinyl acetate), poly(vinyl alcohol), and poly(vinyl ethers). Novel complexes and catalyst systems useful in the polymerization method are also provided.

    摘要翻译: 提供了一种使用过渡金属催化剂聚合由官能团取代的烯烃的方法,其通过引入催化剂结构内的一个或多个稳定基团“固定”每个烯属单体相对于过渡金属络合物的立体构型 在聚合过程中的每个连续反应期间。 本发明基本上降低了聚合过程中催化剂活性位点烯烃重排的可能性。 在一个具体实施方案中,官能团是极性的给电子基团,稳定基团是路易斯酸取代基; 可以用这种体系制备的聚合物的实例包括聚(乙酸乙烯酯),聚(乙烯醇)和聚(乙烯基醚)。 还提供了可用于聚合方法的新型络合物和催化剂体系。

    Construction board materials with engineered microstructures
    8.
    发明授权
    Construction board materials with engineered microstructures 失效
    具有工程微结构的建筑材料

    公开(公告)号:US06743830B2

    公开(公告)日:2004-06-01

    申请号:US10094572

    申请日:2002-03-07

    IPC分类号: C08J906

    摘要: The present invention discloses a composition of matter for use in wallboard in the construction that has a morphology of pores and a network of interconnected inorganic particles that are coated with a thin layer of organic binder. The process used to produce the wallboard can use either hydrophobic or hydrophilic prepolymers or preferably both to create the desired network of coated inorganic particles. A preferred embodiment uses at least one hydrophobic constituent and a decomposition reaction that produces a gas to form one or more layers or a gradient of the morphology in one or more layers to create wallboard products with superior properties to those wallboard products now known.

    摘要翻译: 本发明公开了一种在该结构中用于墙板的物质组合物,其具有孔的形态以及涂覆有薄层有机粘合剂的互连的无机颗粒的网络。 用于生产墙板的方法可以使用疏水性或亲水性预聚物,或优选两者以产生所需的包覆无机颗粒网络。 优选的实施方案使用至少一种疏水组分和分解反应,其产生气体以在一层或多层中形成一层或多层形态梯度,以产生具有与现在已知的壁板产品相比优异性能的壁板产品。

    Viscosity and mass sensor for the high-throughput synthesis, screening and characterization of combinatorial libraries
    9.
    发明授权
    Viscosity and mass sensor for the high-throughput synthesis, screening and characterization of combinatorial libraries 失效
    用于高通量合成,筛选和表征组合文库的粘度和质量传感器

    公开(公告)号:US06602714B1

    公开(公告)日:2003-08-05

    申请号:US09708688

    申请日:2000-11-09

    IPC分类号: G01N3100

    摘要: Workstation, apparatuses and methods for the high-throughput synthesis, screening and/or characterization of combinatorial libraries. The invention relates to an array, which permits various high-throughput methods for synthesis, screening and/or characterization in the same array, without requiring sample transfer from the array. In a preferred embodiment, the synthesis, screening, and/or characterization steps are carried out in a highly parallel fashion, where more than one compound is synthesized, screened, and/or characterized at the same time. The invention may be practiced at the microscale. The array may comprise thermal channels, for regulating the temperature of the wells in the array. The wells of the array may comprise a membrane, which is used in various screening and characterization methods. The invention also relates to a covered array, comprising the array and an array cover, as well as an apparatus comprising the array, which comprises the array, an array cover and a stage. The array, array cover, and the stage may be modified as required for a variety of synthesis and/or analysis techniques. The array is easily interchangeable between different analytical instruments, and in an embodiment, the invention relates to an automated workstation, where the array is transferred between different synthesis, screening, and characterization stations. The invention also relates to a variety of methods for synthesis, screening, and characterization, which are adapted for combinatorial chemistry. Any of the embodiments of the invention may be used either alone or taken in various combinations.

    摘要翻译: 组合库的高通量合成,筛选和/或表征的工作站,设备和方法。 本发明涉及阵列,其允许在相同阵列中进行合成,筛选和/或表征的各种高通量方法,而不需要从阵列转移样品。 在优选实施方案中,合成,筛选和/或表征步骤以高度平行的方式进行,其中多于一种化合物被同时合成,筛选和/或表征。 本发明可以在微尺度下实施。 阵列可以包括用于调节阵列中的阱的温度的热通道。 阵列的孔可以包括膜,其用于各种筛选和表征方法。 本发明还涉及包括阵列和阵列盖的覆盖阵列,以及包括阵列的装置,其包括阵列,阵列盖和台。 可以根据各种合成和/或分析技术的要求来修改阵列,阵列覆盖物和载物台。 该阵列在不同的分析仪器之间易于互换,并且在一个实施例中,本发明涉及自动化工作站,其中阵列在不同的合成,筛选和表征台之间传送。 本发明还涉及适用于组合化学的各种合成,筛选和表征的方法。 本发明的任何实施方案可以单独使用或以各种组合使用。