Molecular self-assembly of electrically conductive polymers
    2.
    发明授权
    Molecular self-assembly of electrically conductive polymers 失效
    导电聚合物的分子自组装

    公开(公告)号:US5536573A

    公开(公告)日:1996-07-16

    申请号:US271085

    申请日:1994-07-06

    摘要: A thin-film heterostructure bilayer is formed on a substrate by a molecular self-assembly process based on the alternating deposition of a p-type doped electrically conductive polycationic polymer and a conjugated or nonconjugated polyanion or water soluble, non-ionic polymer has been developed. In this process, monolayers of electrically conductive polymers are spontaneously adsorbed onto a substrate from dilute solutions and subsequently built-up into multilayer thin films by alternating deposition with a soluble polyanion or water soluble, non-ionic polymer. In contrast to a deposition process involving the alternate self-assembly of polycations and polyanions, this process is driven by non-covalent bonded attractions (for example, ionic and hydrogen bonds) developed between a p-type doped conducting polymer and a polymer capable of forming strong secondary bonds. The net positive charge of the conducting polymer can be systematically adjusted by simply varying its doping level. Thus, with suitable choice of doping agent, doping level and solvent, it is possible to manipulate a wide variety of conducting polymers into uniform multilayer thin films with layer thicknesses ranging from a single monolayer to multiple layers.

    摘要翻译: 基于交联沉积p型掺杂导电聚阳离子聚合物和共轭或非共轭聚阴离子或水溶性非离子聚合物的分子自组装工艺,在基底上形成薄膜异质结双层膜 。 在此过程中,导电聚合物的单层自稀释溶液自发吸附到基底上,随后通过与可溶性聚阴离子或水溶性非离子聚合物交替沉积而形成多层薄膜。 与涉及聚阳离子和聚阴离子的交替自组装的沉积方法相反,该方法由在p型掺杂的导电聚合物和能够形成p型掺杂的导电聚合物的聚合物之间形成的非共价键合的吸引力(例如,离子和氢键) 形成强大的二级债券。 可以通过简单地改变其掺杂水平来系统地调节导电聚合物的净正电荷。 因此,通过适当选择掺杂剂,掺杂水平和溶剂,可以将各种导电聚合物操纵成均匀的多层薄膜,层厚度范围从单层到多层。

    Processing additives for hydraulic cements
    4.
    发明授权
    Processing additives for hydraulic cements 失效
    液压水泥加工助剂

    公开(公告)号:US6048393A

    公开(公告)日:2000-04-11

    申请号:US85379

    申请日:1998-05-26

    IPC分类号: C04B24/12 C04B28/04

    摘要: This invention relates to enhancing the compressive strength of cements after 1, 3, 7 and 28 days following hydration and to improving porosity and finished surfaces of the hardened cements and concretes made therefrom. The improved cements are prepared using certain hydroxylamine additives in amounts of up to 0.1% which preferably are added during grinding of the cement in which case the amines further act as grinding aids.

    摘要翻译: 本发明涉及提高水合后1,3,7和28天之后水泥的抗压强度,以及改善由其制成的硬化水泥和混凝土的孔隙率和最终表面。 使用某些羟胺添加剂的量可高达0.1%,优选在水泥研磨过程中加入改进的水泥,在这种情况下胺还可作为助磨剂。