KATALYSATOR ZUR DEHYDRIERUNG VON 1,1-DIPHENYLETHAN UND SUBSTITUIERTEN 1,1-DIARYLETHANEN

    公开(公告)号:EP1069947A1

    公开(公告)日:2001-01-24

    申请号:EP99917880.9

    申请日:1999-03-26

    发明人: BAIER, Michael

    摘要: The invention relates to a catalyst for dehydrogenating 1,1-diphenylethane and substituted 1,1-diarylethanes, especially for non-oxidatively dehydrogenating 1,1-diarylethanes to 1,1-diarylethenes, based on iron, potassium and cerium. Said catalyst advantageously contains up to 90 wt. % iron, calculated as Fe2O3, 5 to 40 wt. % potassium, calculated as K2O, 0.01 to 30 wt. % cerium, calculated as Ce2O3, 0.01 to 10 wt. % magnesium, calculated as MgO, 0.01 to 10 wt. % vanadium, calculated as V2O5, 0.01 to 10 wt. % wolfram and/or molybdenum, calculated as WO3 or MoO3 and optionally, 0.01 to 5 wt. % aluminium, calculated as Al2O3 and/or 0.01 to 10 wt. % calcium, calculated as CaO. The invention also relates to a method for non-oxidatively dehydrogenating 1,1-diarylethanes, especially 1,1-diphenylethane to 1,1-diarylethenes or 1,1-diphenylethene in the presence of overheated water vapour, using a catalyst of this type.

    摘要翻译: 本发明涉及用于使1,1-二苯基乙烷和取代的1,1-二芳基乙烷脱氢的催化剂,尤其是用于将1,1-二芳基乙烷非氧化脱氢为1,1-二芳基乙烯的基于铁,钾和铈的催化剂。 所述催化剂有利地含有至多90wt。 %铁,以Fe2O3计算,5至40wt。 %钾,按K2O计算,0.01至30wt。 %Ce,以Ce 2 O 3计算,0.01至10wt。 %的镁,以MgO计算,0.01-10wt。 以V 2 O 5计算的钒%,0.01至10wt。 %wolfram和/或钼,以WO 3或MoO 3计算,并且任选地0.01至5wt。 %的铝,以Al 2 O 3计算和/或0.01-10wt。 %的钙,以CaO计算。 本发明还涉及使用这种类型的催化剂在过热水蒸气存在下使1,1-二芳基乙烷,特别是1,1-二苯基乙烷非氧化脱氢成1,1-二芳基乙烯或1,1-二苯基乙烯的方法 。

    Derivatives of 4-vinyl-4'-alpha-hydroxyethyl-biphenyl
    54.
    发明公开
    Derivatives of 4-vinyl-4'-alpha-hydroxyethyl-biphenyl 失效
    衍生von 4-Vinyl-4'-α-羟乙基 - 联苯

    公开(公告)号:EP0849246A2

    公开(公告)日:1998-06-24

    申请号:EP97810972.6

    申请日:1997-12-11

    摘要: The present invention provides compounds having the formula:
    in which R is hydrogen or C 1 -C 4 alkyl, preferably hydrogen and Y is hydrogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy, CF 3 , halogen (F, Cl, Br or I) or SO 3 M in which M is H, Na, K, Ca, Mg, ammonium, mono-, di-, tri- or tetra-C 1 -C 4 alkylammonium, mono-, di- or tri-hydroxyalkylammonium or ammonium that is di- or tri-substituted with a mixture of C 1 -C 4 alkyl and C 1 -C 4 hydroxyalkyl groups; a process for their production by partial dehydration of compounds having the formula:
    ; and their use as intermediates in the production of asymmetric or symmetric fluorescent whitening agents.

    摘要翻译: 本发明提供具有下式的化合物:其中R是氢或C 1 -C 4烷基,优选氢,Y是氢,C 1 -C 4烷基,C 1 -C 4烷氧基,CF 3,卤素(F,Cl,Br或I)或 其中M是H,Na,K,Ca,Mg,铵,一,二,三或四-C 1 -C 4烷基铵的二 - 或三 - 羟烷基铵或二 - 或三 - 被C1-C4烷基和C1-C4羟烷基的混合物取代; 通过部分脱水制备具有下式的化合物的方法:; 以及它们作为生产不对称或对称荧光增白剂的中间体的用途。

    Method of preparing unsaturated dimers of alpha-methylstyrenes
    57.
    发明公开
    Method of preparing unsaturated dimers of alpha-methylstyrenes 失效
    Verfahren zur Herstellung vonungesättigtenDimeren von alpha-Methylstyrolen。

    公开(公告)号:EP0641756A1

    公开(公告)日:1995-03-08

    申请号:EP94303125.2

    申请日:1994-04-29

    IPC分类号: C07C15/50 C07C2/04

    摘要: 1-pentene dimers of α -methylstyrenes are produced with high selectivity in good productivity by stirring 50 to 95 parts by weight of an α -methylstyrene in the presence of 50 to 5 parts by weight of an aqueous solution of a sulfonic acid, and a 1-pentene dimer having good preservative property is then collected by removing the sulfonic acid, adjusting the resulting reaction solution to pH 8 or higher and distilling the neutralized reaction solution.

    摘要翻译: 通过在50〜5重量份的磺酸水溶液的存在下搅拌50〜95重量份的α-甲基苯乙烯,以良好的生产率以高选择性生产α-甲基苯乙烯的1-戊烯二聚体, 然后通过除去磺酸收集具有良好防腐性能的1-戊烯二聚体,将所得反应溶液调节至pH8以上并蒸馏中和的反应溶液。

    Polycyclic diene derivatives
    59.
    发明公开
    Polycyclic diene derivatives 失效
    多环二烯衍生物

    公开(公告)号:EP0563982A3

    公开(公告)日:1994-01-19

    申请号:EP93105492.8

    申请日:1993-04-02

    摘要: A novel liquid crystal material having a carbon chain containing a conjugated diene as a terminal substituent of the molecule and exhibiting superior characteristics is provided, which is a diene derivative expressed by the formula (I)

    wherein R and R' each independently represent 1-5C alkyl; A and B each independently represent 1,4-cyclohexylene or 1,4-phenylene; n is 0 or 1; m is an integer of 0 to 2; X and X' each independently represent H atom or F atom when A is 1,4-phenylene or represent H atom when A is 1,4-cyclohexylene; Y is alkyl, halogen or CN, alkoxy, methyl group substituted by 1-3 halogen atoms or trihaloalkoxy when A is 1,4-phenylene, or represent alkyl, alkoxy, methyl group substituted by 1-3 halogen atoms or trihaloalkoxy when A is 1,4-cyclohexylene; and R and R' are not simultaneously alkyl chain of 4 or more carbon atoms. The compound of the present invention has a generally usable viscosity and a high NI point and a high elastic constant ratio; hence the liquid crystal composition, particularly the liquid crystal composition for STN, containing the compound of the present invention exhibits improved characteristics as compared with the conventional ones.

    摘要翻译: 本发明提供一种新型液晶材料,该液晶材料具有含共轭二烯作为分子末端取代基的碳链并显示出优良的特性,它是由式(I)表示的二烯衍生物,其中R和R'各自独立地代表1-5C 烷基; A和B各自独立地表示1,4-亚环己基或1,4-亚苯基; n是0或1; m是0至2的整数; 当A是1,4-亚苯基时,X和X'各自独立地表示H原子或F原子,或者当A是1,4-亚环己基时表示H原子; 当A是1,4-亚苯基时,Y是烷基,卤素或CN,烷氧基,被1-3个卤素原子取代的甲基或三卤代烷氧基,或者代表烷基,烷氧基,被1-3个卤素原子取代的甲基或三卤代烷氧基 1,4-亚环己; 并且R和R'不同时具有4个或更多个碳原子的烷基链。 本发明的化合物具有通常可用的粘度和高NI点和高弹性常数比; 因此含有本发明化合物的液晶组合物,特别是STN用液晶组合物与以往相比显示出改善的特性。

    Cis-1,4-substituted 2-butene derivative
    60.
    发明公开
    Cis-1,4-substituted 2-butene derivative 失效
    顺式-1,4-取代的2-丁烯衍生物

    公开(公告)号:EP0563981A3

    公开(公告)日:1993-12-08

    申请号:EP93105491.0

    申请日:1993-04-02

    IPC分类号: C09K19/30 C07C15/50 C07C25/24

    摘要: A novel liquid crystal compound having an intermediate group of a cis-1,4-substituted 2-butenyl group, low viscosity and a broad mesomorphic temperature range is provided, which compound is expressed by the following formula:

    wherein R 1 represents an alkyl group of 1 to 10 carbon atoms; n represents 1 or 2, X represents a hydrogen atom, an alkyl group, a halogen atom, a cyano group, an alkoxy group, a methyl group substituted by 1 to 3 halogen atom(s) or a trihaloalkoxy group, Y and Y' each independently represents a hydrogen atom, a halogen atom.

    摘要翻译: 提供了具有顺式-1,4-取代2-丁烯基的中间基团,低粘度和宽介晶温度范围的新型液晶化合物,该化合物由下式表示:其中R 1代表 1至10个碳原子; n表示1或2,X表示氢原子,烷基,卤素原子,氰基,烷氧基,被1至3个卤素原子或三卤代烷氧基取代的甲基,Y和Y' 各自独立地表示氢原子,卤素原子。