High-response electro-optic modulator based on an intrinsically acentric, layer-by-layer self-assembled molecular superlattice
    21.
    发明授权
    High-response electro-optic modulator based on an intrinsically acentric, layer-by-layer self-assembled molecular superlattice 失效
    基于本征中心,逐层自组装分子超晶格的高响应电光调制器

    公开(公告)号:US06549685B2

    公开(公告)日:2003-04-15

    申请号:US09773724

    申请日:2001-01-31

    CPC classification number: B82Y30/00 B82Y10/00 G02F1/065

    Abstract: A new electro-optic (EO) phase modulator constructed from a combination of a low-loss passive polymer waveguide and a self-assembled chromophore superlattice (SAS) with an intrinsically polar microstructure. In contrast to typical polymer-based modulators, the present invention utilizes a siloxane SA methodology that enables the acentric alignment of constituent chromophores during film growth without the need for post-deposition electric field poling. The guiding layer is constructed of the SAS and the glassy polymer Cyclotene™. The use of SiO2, Cytop™ and Cyclotene™ glassy polymers, results in a straightforward device fabrication process that is compatible with the thermally and photochemically robust SAS. Thus, nanoscale control of the film architecture results in greatly simplified macroscopic device fabrication. The present invention provides a SAS-based electro-optic modulator demonstrating excellent electro-optic response properties and a &pgr; phase shift.

    Abstract translation: 由低损耗无源聚合物波导和具有固有极性微结构的自组装发光团超晶格(SAS)的组合构成的新的电光(EO)相位调制器。 与典型的基于聚合物的调节剂相反,本发明使用硅氧烷SA方法,其能够在膜生长期间能够进行组分发色团的定向配位,而不需要后沉积电场极化。 引导层由SAS和玻璃状聚合物Cyclotene TM构成。 使用SiO 2,Cytop TM和Cyclotene TM玻璃状聚合物可形成与热和光化学稳健的SAS相容的简单的器件制造工艺。 因此,膜结构的纳米尺度控制导致宏观器件制造的大大简化。 本发明提供了一种基于SAS的电光调制器,其表现出优异的电光响应特性和pi相移。

    Treatment of a composition comprising a trimethylolalkane bis-monolinear formal
    23.
    发明授权
    Treatment of a composition comprising a trimethylolalkane bis-monolinear formal 有权
    包含三羟甲基烷烃双 - 单变体形式的组合物的处理

    公开(公告)号:US06316679B1

    公开(公告)日:2001-11-13

    申请号:US09579743

    申请日:2000-05-26

    CPC classification number: C07D319/06

    Abstract: A process for treating a composition containing a substantial proportion of trimethyflolpropane bis-monolinear formal (TMP-BMLF) or trimethylolethane bis-monolinear formal (TME-BMLF), e.g., a heavy ends residue obtained from the purification of a crude trimethylolpropane (TMP) or trimethylolethane (TME) product, wherein the composition is contacted at an elevated temperature with a strong acid catalyst, e.g., methanesulfonic acid, to produce a composition containing significantly increased amounts of TMP and trimethylolpropane monocyclic formal (TMP-MCF) or TME and trimethylolethane monocyclic formal (TME-MCF) respectively. Also disclosed is a process for reacting TMP-MCF or TME-MCF, either in substantially pure form or as present in the light ends overhead stream obtained in a finishing treatment of crude TMP or TME, with a monohydric or dihydric alcohol, e.g., ethylene glycol, in the presence of a strong acid catalyst to obtain additional TMP or TME and an acetal by-product, e.g., 1,3-dioxolane; and a process for directly reacting the TMP-BMLF or TME-BMLF present in a composition, e.g., the heavy ends residue obtained in the purification of TMP or TME, with a monohydric or dihydric alcohol, e.g., ethylene glycol, in the presence of a strong acid to obtain additional TMP or TME and an acetal by-product, e.g., 1,3-dioxolane.

    Abstract translation: 一种用于处理含有大量比例的三甲基十四烷丙基双 - 单体形式(TMP-BMLF)或三羟甲基乙烷双 - 单体形式(TME-BMLF)的组合物的方法,例如从纯化三羟甲基丙烷(TMP)得到的重馏分残余物, 或三羟甲基乙烷(TME)产物,其中组合物在高温下与强酸催化剂(例如甲磺酸)接触以产生含有显着增加量的TMP和三羟甲基丙烷单环形式(TMP-MCF)或TME和三羟甲基乙烷的组合物 单体形式(TME-MCF)。 还公开了一种使TMP-MCF或TME-MCF以基本纯的形式或存在于在粗TMP或TME的整理处理中获得的轻馏分塔顶馏出物与一元或二元醇(例如乙烯 乙二醇,在强酸催化剂存在下,得到另外的TMP或TME和缩醛副产物,例如1,3-二氧戊环; 以及将组合物中存在的TMP-BMLF或TME-BMLF直接反应的方法,例如在TMP或TME纯化中获得的重馏分残基与一元或二元醇(例如乙二醇)在存在下 强酸以获得额外的TMP或TME和缩醛副产物,例如1,3-二氧戊环。

    Ruthenium-containing catalyst composition for olefin metathesis
    24.
    发明授权
    Ruthenium-containing catalyst composition for olefin metathesis 失效
    用于烯烃复分解的含钌催化剂组合物

    公开(公告)号:US6156692A

    公开(公告)日:2000-12-05

    申请号:US842251

    申请日:1997-04-24

    Abstract: A ruthenium-containing metathesis catalyst system which contains a ruthenium compound (A), a phosphorus compound (B), and a compound (C) containing a carbon-to-carbon triple bond. The mole ratio of compounds A:B:C is typically in the range of about 1.0:0.01-100:0.01-100. The ruthenium compound (A) is a Ru(II), Ru(III), or Ru(IV) compound containing an anionic ligand (X) and optionally an arene ligand and optionally a phosphorus compound ligand. The phosphorus compound (B) is optional if the ruthenium compound (A) contains a phosphorus-containing ligand. The catalyst system is employed in processes to metathesize olefins, including ring-opening metathesis polymerization of cyclic olefins, metathesis of acyclic olefins, acyclic diene metathesis oligomerization or polymerization, cross-metathesis of cyclic and acyclic olefins, ring-closing metathesis, metathesis depolymerization of unsaturated polymers, and metathesis of functionalized olefins.

    Abstract translation: 含有钌化合物(A),磷化合物(B)和含有碳 - 碳三键的化合物(C)的含钌复分解催化剂体系。 化合物A:B:C的摩尔比通常在约1.0:0.01-100:0.01-100的范围内。 钌化合物(A)是含有阴离子配体(X)的Ru(II),Ru(III)或Ru(IV)化合物以及任选的芳族配体和任选的磷化合物配体。 如果钌化合物(A)含有含磷配体,磷化合物(B)是任选的。 催化剂体系用于将烯烃分离的方法,包括环烯烃的开环易位聚合,无环烯烃的复分解,无环二烯复分解低聚或聚合,环状和非环烯烃的交叉复分解,闭环复分解,复分解解聚 不饱和聚合物和官能化烯烃的复分解。

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