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201 条记录 (耗时 0.061 秒)

    Products resulting from polymerizing or curing polycyanates containing mesogenic moieties as lateral substituents
    43.
    发明授权
    Products resulting from polymerizing or curing polycyanates containing mesogenic moieties as lateral substituents 失效
    聚合或固化含有介晶部分作为侧向取代基的聚氰酸酯产生的产物

    公开(公告)号：US5470946A

    公开(公告)日：1995-11-28

    申请号：US291962

    申请日：1994-10-12

    申请人： Robert E. Hefner, Jr. ,  Jimmy D. Earls

    发明人： Robert E. Hefner, Jr. ,  Jimmy D. Earls

    IPC分类号： C07C69/773 ,  C08G73/06 ,  C08L79/04 ,  C08G73/00

    CPC分类号： C08L79/04 ,  C08G73/0655

    摘要： Novel polycyanate compositions containing one or more mesogenic moieties as lateral substituents are disclosed which provide improved processability relative to polycyanates containing one or more mesogenic moieties in the main chain of the molecule. Molecular level ordering of the resulting thermosets is maintained much similar to that found thermosets of polycyanates which have one or more mesogenic moieties in the main chain.

    摘要翻译： 公开了含有一个或多个介晶部分作为侧向取代基的新型聚氰酸酯组合物，其相对于在分子主链中含有一个或多个介晶部分的聚氰酸酯提供了改进的加工性能。 所得热固性材料的分子水平排列保持非常类似于在主链中具有一个或多个介晶部分的聚氰化物的热固性物质。

    Amines from nitro group terminated mesogenic epoxy resin adducts with reduced hydroxyl group functionality
    44.
    发明授权
    Amines from nitro group terminated mesogenic epoxy resin adducts with reduced hydroxyl group functionality 失效
    来自硝基的胺封端的中等环氧树脂加合物具有降低的羟基官能度

    公开(公告)号：US5464912A

    公开(公告)日：1995-11-07

    申请号：US377070

    申请日：1995-01-23

    申请人： Robert E. Hefner, Jr. ,  Jimmy D. Earls

    发明人： Robert E. Hefner, Jr. ,  Jimmy D. Earls

    IPC分类号： C08G59/14 ,  C08G59/20 ,  C08G59/22 ,  C08G59/28 ,  C09K19/38 ,  C08F283/00

    CPC分类号： C08G59/1477 ,  C08G59/20 ,  C08G59/22 ,  C09K19/3814 ,  C09K19/3823

    摘要： Adducts containing terminating nitro (nitroso) groups and one or more mesogenic moleties are prepared by reacting (A) at least one compound containing an average of more than one vicinal epoxide group per molecule with (B) at least one compound containing one or more nitro (nitroso) groups and an average of one reactive hydrogen atom per molecule; with the proviso that at least one member of components (A) and (B) contains a mesogenic moiety. Reaction of part or all of the aliphatic hydroxyl backbone groups by etherification, conversion to a halide, urethanation, oxidation to a ketone, or reduction of said ketone to an alkane, decreases the amount of hydroxyl group functionality. Reduction of these adducts provides amines which are useful as curing agents for epoxy resins.

    摘要翻译： 含有终止硝基（亚硝基）基团和一种或多种介晶摩尔的加合物通过使（A）至少一种含有平均每分子多个邻位环氧基团的化合物与（B）至少一种含有一个或多个硝基 （亚硝基）基团，每个分子平均有一个反应性氢原子; 条件是组分（A）和（B）的至少一个成员含有介晶部分。 通过醚化，转化成卤化物，氨基甲酸酯化，氧化成酮或将所述酮还原成烷烃，部分或全部脂族羟基骨架基团的反应减少羟基官能度的量。 这些加合物的还原提供了可用作环氧树脂固化剂的胺。

    Oriented compositions derived from nitro group terminated mesogenic epoxy resin adducts
    46.
    发明授权
    Oriented compositions derived from nitro group terminated mesogenic epoxy resin adducts 失效
    衍生自硝基封端的中间环氧树脂加合物的定向组合物

    公开(公告)号：US5344898A

    公开(公告)日：1994-09-06

    申请号：US154805

    申请日：1993-11-18

    申请人： Robert E. Hefner, Jr. ,  Jimmy D. Earls

    发明人： Robert E. Hefner, Jr. ,  Jimmy D. Earls

    IPC分类号： C08G59/14 ,  C08G59/20 ,  C08G59/22 ,  C08G59/28 ,  C09K19/38 ,  C08G59/50 ,  C08G75/32

    CPC分类号： C08G59/1477 ,  C08G59/20 ,  C08G59/22 ,  C09K19/3814 ,  C09K19/3823

    摘要： Adducts containing terminating nitro (nitroso) groups and one or more mesogenic moieties are prepared by reacting (A) at least one compound containing an average of more than one vicinal epoxide group per molecule with (B) at least one compound containing one or more nitro (nitroso) groups and an average of one reactive hydrogen atom per molecule; with the proviso that at least one member of components (A) and (B) contains a mesogenic moiety. Reduction of these adducts provides amines which are useful as curing agents for epoxy resins. Curable compositions comprising an epoxy resin and the adducts can be oriented before, during or prior to curing.

    摘要翻译： 含有末端硝基（亚硝基）基团和一个或多个介晶部分的加合物通过使（A）至少一种每分子含有多于一个邻位环氧基团的化合物与（B）至少一种含有一个或多个硝基 （亚硝基）基团，每个分子平均有一个反应性氢原子; 条件是组分（A）和（B）的至少一个成员含有介晶部分。 这些加合物的还原提供了可用作环氧树脂固化剂的胺。 包含环氧树脂和加合物的可固化组合物可以在固化之前，期间或之前取向。

    Epoxy resins containing thiadiazole and/or oxadiazole moieties
    50.
    发明授权
    Epoxy resins containing thiadiazole and/or oxadiazole moieties 失效
    含有噻二唑和/或恶二唑部分的环氧树脂

    公开(公告)号：US5290887A

    公开(公告)日：1994-03-01

    申请号：US56699

    申请日：1993-04-30

    申请人： Robert E. Hefner, Jr. ,  Joseph A. Schomaker ,  Jimmy D. Earls

    发明人： Robert E. Hefner, Jr. ,  Joseph A. Schomaker ,  Jimmy D. Earls

    IPC分类号： C07D413/14 ,  C07D417/14 ,  C08G59/20 ,  C08G59/26 ,  C08G59/30 ,  C09K19/38 ,  C08G59/00 ,  C08G65/08 ,  C08G65/14

    CPC分类号： C07D413/14 ,  C07D417/14 ,  C08G59/20 ,  C08G59/26 ,  C08G59/302 ,  C09K19/3823

    摘要： Epoxy resins containing more than one vicinal epoxide group per molecule and at least one thiadiazole, oxadiazole or both thiadiazole and oxadiazole moiety per molecule are disclosed, as well as curable and cured compositions thereof. Certain of these epoxy resins possess enantiotropic liquid crystallinity. These enantiotropic epoxy resins are useful in preparing copolymers with high glass transition temperatures and liquid crystalline morphology, which can result in enhanced unidirectional mechanical properties. These epoxy resins are useful in coating, casting, encapsulation, electronic or structural laminate or composite, filament winding or molding applications.

    摘要翻译： 公开了每分子含有多于一个邻位环氧基团的环氧树脂以及每个分子至少一个噻二唑，恶二唑或噻二唑和恶二唑部分，以及其可固化和固化的组合物。 这些环氧树脂中的某些具有对映体液晶性。 这些对映性环氧树脂可用于制备具有高玻璃化转变温度和液晶形态的共聚物，这可导致增强的单向力学性能。 这些环氧树脂可用于涂料，浇铸，封装，电子或结构层压板或复合材料，长丝缠绕或模塑应用。