利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

225 条记录 (耗时 0.026 秒)

    Processes for the manufacture of lactones
    74.
    发明申请
    Processes for the manufacture of lactones 失效
    制造内酯的方法

    公开(公告)号：US20040034238A1

    公开(公告)日：2004-02-19

    申请号：US10344641

    申请日：2003-06-13

    发明人： Richard A. Galley

    IPC分类号： C07D305/00

    CPC分类号： C07D315/00

    摘要： Processes are disclosed for the manufacture of lactones, e.g., caprolactone, from hydoxy acids, e.g., 6-hydroxycaproic acid. The reaction is conducted over a suitable catalyst in the presence of water.

    摘要翻译： 公开了用于由羟基酸例如6-羟基己酸制造内酯例如己内酯的方法。 该反应在水存在下通过合适的催化剂进行。

    Polymerizable liquid crystalline dioxetanes, their preparation and use
    75.
    发明申请
    Polymerizable liquid crystalline dioxetanes, their preparation and use 失效
    可聚合的液晶二氧杂环丁烷，其制备和用途

    公开(公告)号：US20030111640A1

    公开(公告)日：2003-06-19

    申请号：US09969700

    申请日：2001-10-03

    申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V.

    发明人： Johan Lub

    IPC分类号： C09K019/34 ,  C09K019/52 ,  C07D305/00

    CPC分类号： C07D305/06 ,  C09K19/38 ,  C09K19/3876 ,  C09K2019/3416 ,  Y10T428/10

    摘要： New photopolymerizable liquid crystalline dioxetane compounds are provided. having the general formula I: 1 wherein R1 and R2 are independently selected from straight or branched C1-C4 alkyl and hydrogen; X and Xnull are independently selected from oxygen, sulfur, a single covalent bond, nullOnullCOnull, nullCOnullOnull, and nullOnullCOnullOnull; Y and Ynull are spacer groups having each independently 1 to 30 carbon atoms (linear or branched), in which the carbon chain may be interrupted by oxygen in the ether function or by sulfur in the thioether function; Z and Znull are independently selected from oxygen, sulfur, a single covalent bond, nullOnullCOnull, nullCOnullOnull, and nullOnullCOnullOnull; and M is any suitable mesogenic group. Also, compositions are provided containing one or more compounds of formula I, as well as methods of preparing said compounds and compositions. These compounds and compositions show excellent characteristics upon polymerization, such as improved non-shrinking properties, and are useful in a variety of applications, in particular in liquid crystal devices, sensors, and optical precision instruments. null

    摘要翻译： 提供了新的可光聚合的液晶二氧杂环丁烷化合物。 具有通式I：其中R 1和R 2独立地选自直链或支链C 1 -C 4烷基和氢; X和X'独立地选自氧，硫，单个共价键，-O-CO-，-CO-O-和-O-CO-O-; Y和Y'是具有各自独立的1至30个碳原子（直链或支链）的间隔基，其中碳链可以被醚功能中的氧或硫醚官能团中的硫中断; Z和Z'独立地选自氧，硫，单个共价键，-O-CO-，-CO-O-和-O-CO-O-; M是任何合适的介晶组。 此外，提供含有一种或多种式I化合物的组合物，以及制备所述化合物和组合物的方法。 这些化合物和组合物在聚合时显示出优异的特性，例如改进的非收缩性能，并且可用于各种应用，特别是在液晶装置，传感器和光学精密仪器中。 ½

    Monomers mono-substituted fluorinated oxetane
    80.
    发明授权
    Monomers mono-substituted fluorinated oxetane 失效
    单取代的氟代氧杂环丁烷单体

    公开(公告)号：US5654450A

    公开(公告)日：1997-08-05

    申请号：US539696

    申请日：1995-10-05

    申请人： Aslam A. Malik ,  Thomas G. Archibald

    发明人： Aslam A. Malik ,  Thomas G. Archibald

    IPC分类号： C07B61/00 ,  C07D305/06 ,  C08G18/10 ,  C08G18/50 ,  C08G18/66 ,  C08G65/00 ,  C08G65/18 ,  C08G65/20 ,  C08G65/22 ,  C09D175/06 ,  C07D305/00

    CPC分类号： C08G65/226 ,  C07D305/06 ,  C08G18/10 ,  C08G18/5015 ,  C08G18/6677 ,  C08G65/00 ,  C08G65/18 ,  C08G65/20

    摘要： This application is directed to novel fluorinated polymers and prepolymers derived from mono-substituted oxetane monomers having fluorinated alkoxymethylene side-chains and the method of making these compositions. The mono-substituted fluorinated oxetane monomers having fluorinated alkoxymethylene side-chains are prepared in high yield by the reaction of a fluorinated alkoxides with either 3-halomethyl-3-methyloxetane premonomers or aryl sulfonate derivative of 3-hydroxymethyl-3-methyloxetane premonomers. Preparation of a mono-substituted 3-bromomethyl-3-methyloxetane premonomer via a simple, high yield process amenable to commercial scaleup is also disclosed. The fluorinated oxetane monomers of this invention can be readily homo/co-polymerized in the presence of a Lewis acid and polyhydroxy compounds to obtain hydroxy-terminated polyether prepolymers having fluorinated alkoxymethylene side chains. Additionally, the fluorinated oxetane monomers can be copolymerized with non-fluorinated monomers such as tetrahydrofuran to give polyether prepolymers with improved hydrocarbon compatibility. These prepolymers are polydisperse and exhibit number average molecular weights from 5,000 to about 50,000. These prepolymers are amorphous oils with primary hydroxy end-groups and thus function efficiently as the soft block for the synthesis of a variety of thermoset/thermoplastic elastomers and plastics having the characteristics of very low surface energy, high hydrophobicity, low glass transition temperature and low coefficient of friction. The polyurethanes derived from the prepolymers of this invention are elastomeric and, in addition to the above characteristics, exhibit high moisture resistance, high tear strength and excellent adhesion to a variety of substrates.

    摘要翻译： 本申请涉及由具有氟化烷氧基亚甲基侧链的单取代的氧杂环丁烷单体衍生的新的氟化聚合物和预聚物以及制备这些组合物的方法。 具有氟化烷氧基亚甲基侧链的单取代氟化氧杂环丁烷单体通过氟化烷氧化物与3-卤代甲基-3-甲基氧杂环丁烷预先单体或3-羟甲基-3-甲基氧杂环丁烷预先单体的芳基磺酸酯衍生物的反应以高收率制备。 还公开了通过易于商业化的简单高产率工艺制备单取代的3-溴甲基-3-甲基环氧乙烷预先单体。 本发明的氟化氧杂环丁烷单体可以在路易斯酸和多羟基化合物的存在下容易地均相/共聚，得到具有氟化烷氧基亚甲基侧链的羟基封端的聚醚预聚物。 此外，氟化氧杂环丁烷单体可以与非氟化单体如四氢呋喃共聚，得到具有改进的烃相容性的聚醚预聚物。 这些预聚物是多分散体，其数均分子量为5,000至约50,000。 这些预聚物是具有主要羟基端基的无定形油，因此作为用于合成各种具有非常低的表面能，高疏水性，低玻璃化转变温度和低的特性的各种热固性/热塑性弹性体和塑料的软块有效地起作用 摩擦系数。 衍生自本发明的预聚物的聚氨酯是弹性体的，并且除了上述特征之外，还显示出高耐湿性，高撕裂强度和对各种基材的优异粘合性。