High stability conductive polyacetylene material and process for the
production thereof
    3.
    发明授权
    High stability conductive polyacetylene material and process for the production thereof 失效
    高稳定性导电聚乙炔材料及其制备方法

    公开(公告)号:US4481132A

    公开(公告)日:1984-11-06

    申请号:US395294

    申请日:1982-07-06

    摘要: The invention relates to a doped polyacetylene film for forming an organic semiconductor or even a conductor of a metallic type. It serves to make the doping more homogeneous and improves the stability over a period of time. The process consists of using as the dopant a salt of an element such as chrome, nickel, iron, titanium, tungsten, or molybdenum belonging to the transition metals, or a salt of an element such as europium or ytterbium belonging to the lanthanides. Doping takes place by immersing the film in a solution having a low dopant concentration, e.g. in toluene, and maintaining the system at low pressure and ordinary temperature for a period of a few days, as a function of the desired doping level and conductivity.

    摘要翻译: 本发明涉及用于形成有机半导体或甚至金属型导体的掺杂聚乙炔膜。 它用于使掺杂更均匀,并且在一段时间内提高了稳定性。 该方法包括使用属于过渡金属的诸如铬,镍,铁,钛,钨或钼的元素的盐作为掺杂剂,或者属于镧系元素的元素如铕或镱的盐。 通过将膜浸入低掺杂剂浓度的溶液中来进行掺杂。 在甲苯中,并将系统保持在低压和常温下几天的时间,作为所需掺杂浓度和电导率的函数。

    Process for Preparing Copolymers by Anionic Solvent-Free Polymerization
    6.
    发明申请
    Process for Preparing Copolymers by Anionic Solvent-Free Polymerization 失效
    通过阴离子无溶剂聚合制备共聚物的方法

    公开(公告)号:US20080312376A1

    公开(公告)日:2008-12-18

    申请号:US12095248

    申请日:2006-11-28

    IPC分类号: C08L29/04 C08L71/02

    摘要: The invention concerns a process for preparing a block or comb copolymer comprising at least one hydrophilic portion and at least two hydrophobic portions, by anionic solvent-free polymerization of a prepolymer selected from a polyethylene glycol and a polyvinyl alcohol, and of a lactone or dilactone monomer. The process is carried out in the presence of an alkaline-earth metal hydride, in an inert atmosphere, and the polymerization step is not carried out under vacuum. The invention also concerns copolymers obtained by this process.

    摘要翻译: 本发明涉及一种制备包含至少一个亲水部分和至少两个疏水部分的嵌段或梳状共聚物的方法,通过阴离子无溶剂聚合选自聚乙二醇和聚乙烯醇的预聚物以及内酯或二烯丙基内酯 单体。 该方法在碱土金属氢化物的存在下,在惰性气氛中进行,聚合步骤不能在真空下进行。 本发明还涉及通过该方法获得的共聚物。