Biodegradable polyurethane/urea compositions
    1.
    发明申请
    Biodegradable polyurethane/urea compositions 有权
    生物降解聚氨酯/尿素组合物

    公开(公告)号:US20050238683A1

    公开(公告)日:2005-10-27

    申请号:US10520414

    申请日:2003-07-23

    摘要: The present invention relates to biocompatible, biodegradable polyurethane/urea polymeric compositions that are capable of in-vivo curing with low heat generation to form materials suitable for use in scaffolds in tissue engineering applications such as bone and cartilage repair. The polymers are desirably flowable and injectable and can support living biological components to aid in the healing process. They may be cured ex-vivo for invasive surgical repair methods, or alternatively utilized for relatively non-invasive surgical repair methods such as by arthroscope. The invention also relates to prepolymers useful in the preparation of the polymeric compositions, and to methods of treatment of damaged tissue using the polymers of the invention.

    摘要翻译: 本发明涉及生物相容的,可生物降解的聚氨酯/尿素聚合物组合物,其能够在低发热下体内固化以形成适用于组织工程应用如骨和软骨修复中的支架的材料。 聚合物理想地是可流动和可注射的,并且可以支持活的生物组分以帮助愈合过程。 它们可以用于侵入性外科手术修复方法离体固化,或者替代地用于相对非侵入性的手术修复方法,例如通过关节镜。 本发明还涉及可用于制备聚合物组合物的预聚物,以及使用本发明的聚合物处理受损组织的方法。

    Methods for producing and using catalytic substrates for carbon nanotube growth
    3.
    发明申请
    Methods for producing and using catalytic substrates for carbon nanotube growth 失效
    生产和使用碳纳米管生长催化底物的方法

    公开(公告)号:US20050112052A1

    公开(公告)日:2005-05-26

    申请号:US10943321

    申请日:2004-09-16

    摘要: A catalyst material for carbon nanotube synthesis includes a uniform dispersion of host particles on a substrate. The host particles themselves include catalyst nanoparticles that are effective to catalyze nanotube syntheses reactions and provide nucleation sites. Methods for preparing catalyst materials include co-sputtering a catalytic species and a host species to form a precursor thin film on a substrate, followed by an oxidation reaction of the precursor thin film in air. The precursor thin film can be patterned on the substrate to limit the locations of the catalyst material to well-defined areas. Methods for nanotube synthesis employ CVD in conjunction with the catalyst materials of the invention. During the synthesis, the catalyst nanoparticles catalyze carbon nanotubes to grown from a carbon-containing gas.

    摘要翻译: 用于碳纳米管合成的催化剂材料包括主体颗粒在基底上的均匀分散。 主体颗粒本身包括有效催化纳米管合成反应并提供成核位点的催化剂纳米颗粒。 制备催化剂材料的方法包括共催化催化物质和主体物质,以在基底上形成前体薄膜,随后在空气中氧化前体薄膜。 可以在衬底上图案化前体薄膜,以将催化剂材料的位置限制到明确界定的区域。 纳米管合成方法与本发明的催化剂材料结合使用CVD。 在合成过程中,催化剂纳米粒子催化从含碳气体生长的碳纳米管。

    Method of forming ion transport membrane composite structure
    6.
    发明申请
    Method of forming ion transport membrane composite structure 审中-公开
    形成离子迁移膜复合结构的方法

    公开(公告)号:US20050013933A1

    公开(公告)日:2005-01-20

    申请号:US10864582

    申请日:2004-06-10

    摘要: A method of forming a composite structure for an ion transport membrane in which a filler substance is applied to one surface of a porous support layer in order to plug pores and prevent coated ion conducting material from penetrating the pores to reduce the amount of gas diffusion. Prior to coating of the surface with layers that may be oxygen ion conducting layers, excess filler substance is removed. After the coating of the one surface, the filler substance is removed from pores.

    摘要翻译: 一种形成用于离子迁移膜的复合结构的方法,其中将填料物质施加到多孔载体层的一个表面以堵塞孔,并防止涂覆的离子传导材料穿透孔以减少气体扩散量。 在用可能是氧离子传导层的层涂覆表面之前,除去过量的填料。 在一个表面涂覆之后,从孔中除去填充物质。

    Process for preparing ferrierite
    7.
    发明授权
    Process for preparing ferrierite 失效
    制备镁碱沸石的方法

    公开(公告)号:US5985238A

    公开(公告)日:1999-11-16

    申请号:US885628

    申请日:1997-06-30

    摘要: Ferrierite is prepared by a method that provides extremely pure crystalline material. The method consists of preparing a mixture of silica, alumina, alkali metal and pyridine of a certain composition and heating said mixture to form the crystals. The SiO.sub.2 /Al.sub.2 O.sub.3 and OH.sup.- /SiO.sub.2 are controlled to insure preparation of high SiO.sub.2 /Al.sub.2 O.sub.3 ratio, high surface area and high purity ferrierite. An improved olefin skeletal isomerization catalyst is prepared from a high silica to alumina ratio, high surface area and high purity ferrierite.

    摘要翻译: 镁镁沸石通过提供极纯的结晶材料的方法制备。 该方法包括制备具有一定组成的二氧化硅,氧化铝,碱金属和吡啶的混合物,并加热所述混合物以形成晶体。 控制SiO 2 / Al 2 O 3和OH- / SiO 2以确保制备高SiO 2 / Al 2 O 3比例,高表面积和高纯度镁碱沸石。 改进的烯烃骨架异构化催化剂由高二氧化硅与氧化铝比,高表面积和高纯度镁碱沸石制备。

    Refinements in air-quality protection and seal control, in a
particulate-material gun usable with silica fume
    8.
    发明授权
    Refinements in air-quality protection and seal control, in a particulate-material gun usable with silica fume 失效
    在可用于硅粉的颗粒材料枪中,优化空气质量保护和密封控制

    公开(公告)号:US5915887A

    公开(公告)日:1999-06-29

    申请号:US802628

    申请日:1997-02-19

    CPC分类号: B65G53/4616 B65G53/4641

    摘要: Dust emission is controlled by a preferably short fill at the expulsion end of each chamber, and selective venting of residual pressure through the air-inlet end. This selective venting is accomplished through use of a novel seal or "pad" that has an extension for tightly covering and sealing the material-exhaust end of each chamber while the chamber is in a dust-control plenum. The pad extension is notched so that it leaves the air-inlet end uncovered, permitting pressure venting through the notch and the air-inlet end. To provide truly effective sealing of the pad extension against the wear plate above the chamber that is in the plenum, the extension is reinforced by a strong metal plate which is embedded in the pad. Careful contouring of the main material-conveying ports in the pad optimizes the performance. A new all-pneumatic pad-clamping pressure-control system has been found to provide excellent control of pressure and uniformity of wear, with a minimum of working parts and adjustments.

    摘要翻译: 排气通过在每个室的排出端处的优选短填料控制,并且通过进气端选择性排出残留压力。 这种选择性排气通过使用新颖的密封件或“垫”来实现,该密封件或“垫”具有用于在室处于防尘室中时紧密地覆盖和密封每个室的材料排气端的延伸部。 垫片延长部分被切掉,使得它没有覆盖空气入口端,允许压力通过凹口和空气入口端排出。 为了提供垫片延伸部对于位于通风室中的室上方的耐磨板的真正有效的密封,延伸部被嵌入垫中的强金属板加强。 衬垫中主要材料输送端口的精细轮廓优化了性能。 已经发现了一种全新的全气压式夹紧压力控制系统,可以极好地控制压力和均匀性,同时还能减少工作部件的调整。

    Method of creating a pillared layered clay (PILC)
    10.
    发明授权
    Method of creating a pillared layered clay (PILC) 失效
    创建柱状分层粘土(PILC)的方法

    公开(公告)号:US5384295A

    公开(公告)日:1995-01-24

    申请号:US94076

    申请日:1993-08-30

    CPC分类号: B01J29/049

    摘要: The method enables the creation of a pillared layered clay (a PILC) by contacting the clay with a pillaring precursor and delivering energy to the reaction mixture to intercalate the precursor into the clay. The pillaring precursor is an electrically neutral organometallic molecule with a carbon-metal bond which is susceptible to proton attack whereby protons donated from sites of Bronsted acidity in the clay cleave the carbon-metal bond to yield an organic fragment of the precursor and a metal-containing pillaring fragment. A preferred precursor is Ph.sub.2 SnCl.sub.2.

    摘要翻译: PCT No.PCT / GB92 / 00082 Sec。 371日期:1993年8月30日 102(e)日期1993年8月30日PCT提交1992年1月15日PCT公布。 第WO92 / 12793号公报 日期为1992年8月6日。该方法通过使粘土与柱状前体接触并将能量输送到反应混合物以将前体插入粘土中,从而形成柱状分层粘土(PILC)。 柱状前体是具有碳 - 金属键的电中性有机金属分子,其易于质子攻击,从而在粘土中从布朗斯台德酸性位置提供的质子切割碳 - 金属键以产生前体的有机片段, 含有支柱片段。 优选的前体是Ph 2 SnCl 2。