Hexahydronaphthalene ester derivatives, their preparation and their therapeutic uses
申请人:SANKYO COMPANY LIMITED
公开号:EP0609058A2
公开(公告)日:1994-08-03
Compounds of formula (I):
[wherein R¹ represents a group of formula (II) or (III):
R² is hydrogen or a group of formula -OR³; R³, R3a and R3b are each hydrogen, a hydroxy-protecting group, alkyl, alkanesulphonyl, halogenated alkanesulphonyl or arylsulphonyl; R⁴ is hydrogen or a carboxy-protecting group; R⁵ is alkyl, alkenyl, alkynyl, aryl, aralkyl or a fused polycycle; and W is alkylene] and their salts and esters have the ability to inhibit the synthesis of cholesterol, and can thus be used for the treatment and prophylaxis of hypercholesterolemia and of various cardiac disorders.
Verfahren zur Herstellung von halogenierten 1,2-Disilaethanen
申请人:Wacker-Chemie GmbH
公开号:EP1103556A1
公开(公告)日:2001-05-30
Es wird ein neues Verfahren zur Herstellung von halogenierten 1,2-Disilaethanen der allgemeinen Formel
X3-nRnSi-CHR1CHR1-SiRnX3-n (I)
wobei R gleich oder verschieden sein kann und ein Wasserstoffatom oder einen einwertigen gegebenfalls substituierten Kohlenwasserstoffrest mit 1 bis 40 Kohlenstoffatom(en) je Rest,
R1 gleich oder verschieden sein kann und ein Wasserstoffatom oder einen einwertigen gegebenfalls substituierten Kohlenwasserstoffrest mit 1 bis 40 Kohlenstoffatom(en) je Rest,
X ein Halogenatom
und n 0, 1 oder 2 bedeutet,
dadurch gekennzeichnet, daß halogenierte 1,2-Disilaethene der allgemeinen Formel
X3-nRnSi-CR1=CR1-SiRnX3-n (II)
wobei R, R1, X und n die oben dafür angegebene Bedeutung haben, mit Wasserstoff in Gegenwart von die Hydrierung fördernde Katalysatoren umgesetzt werden, beschrieben.
制备通式卤代 1,2-二乙烷的新工艺
X3-nRnSi-CHR1CHR1-SiRnX3-n (I)
其中 R 可以相同或不同,是氢原子或单价、任选取代的烃基,每个烃基具有 1 至 40 个碳原子、
R1 可以相同或不同,并且是氢原子或每个基含有 1 至 40 个碳原子的一价任选取代的烃基、
X 是卤素原子
n 为 0、1 或 2、
其特征在于,通式为卤代 1,2-二乙烯基醚
X3-nRnSi-CR1=CR1-SiRnX3-n (II)
其中 R、R1、X 和 n 如上定义,在氢化促进催化剂存在下与氢反应。
Method of manufacturing thin film, substrate having thin-film, electron emission material, method of manufacturing electron emission material, and electron emission device
申请人:Nissin Kogyo Co., Ltd
公开号:EP1659158A2
公开(公告)日:2006-05-24
A method of manufacturing a thin film, including: mixing carbon nanofibers into an elastomer including an unsaturated bond or a group having affinity to the carbon nanolibers, and dispersing the carbon nanofibers by applying a shear force to obtain a carbon fiber composite material; mixing the carbon fiber composite material and a solvent to obtain a coating liquid; and applying the coating liquid to a substrate to form a thin film.
SOLID CATALYST COMPONENT FOR POLYMERIZATION OF OLEFIN, CATALYST FOR POLYMERIZATION OF OLEFIN, AND METHOD FOR PRODUCING OLEFIN POLYMER
申请人:Toho Titanium CO., LTD.
公开号:EP2759552A1
公开(公告)日:2014-07-30
A solid catalyst component for olefin polymerization includes titanium, magnesium, a halogen, and a compound represented by the following formula (1): R1O-C(=O)-O-Z-OR2, and an olefin polymerization catalyst includes the solid catalyst component, an organoaluminum compound, and an optional external electron donor compound. An olefin polymer that has a moderate molecular weight distribution while maintaining high stereoregularity can be produced by utilizing the solid catalyst component and the olefin polymerization catalyst.
METHOD FOR PRODUCING SOLID CATALYST COMPONENT FOR USE IN POLYMERIZATION OF OLEFIN, CATALYST FOR USE IN POLYMERIZATION OF OLEFIN, AND METHOD FOR PRODUCING OLEFIN POLYMER
申请人:Toho Titanium CO., LTD.
公开号:EP2876118A1
公开(公告)日:2015-05-27
A method for producing a solid catalyst component for olefin polymerization produces a novel solid catalyst component for olefin polymerization that achieves excellent olefin polymerization activity and activity with respect to hydrogen during polymerization, and can produce an olefin polymer that exhibits a high MFR, high stereoregularity, and excellent rigidity. The method includes a first step that brings a magnesium compound, a tetravalent titanium halide compound, and one or more first internal electron donor compounds selected from specific aromatic dicarboxylic diesters into contact with each other to effect a reaction, followed by washing, a second step that brings a tetravalent titanium halide compound and one or more second internal electron donor compounds into contact with a product obtained by the first step to effect a reaction, followed by washing, and a third step that brings one or more third internal electron donor compounds into contact with a product obtained by the second step to effect a reaction.