公开(公告)号：US5385993A

公开(公告)日：1995-01-31

申请号：US136732

申请日：1993-10-14

申请人： Takashi Fujita

发明人： Takashi Fujita

IPC分类号： C08F4/658 ,  C08F4/60 ,  C08F10/00 ,  C08F4/654 ,  C08F10/06

CPC分类号： C08F10/00

摘要： Ziegler polymerization of C.sub.3 or higher .alpha.-olefins is disclosed which is characterized by a solid catalyst component and an organoaluminum component used in the Ziegler catalyst, and also by the temperature used which is 150.degree. to 300.degree. C. The solid catalyst component, Component (A), comprises Sub-component (i) which is a solid catalyst component for Ziegler catalysts comprising Ti, Mg and a halogen; Sub-component (ii) which is a silicon compound represented by a formula: R.sup.1.sub.m X.sub.n Si(OR.sup.2).sub.4-n-m wherein R.sup.1 indicates a hydrocarbyl group, R.sup.2 which may be the same as or different from R.sup.1 indicates a hydrocarbyl group, X is a halogen atom, and m and n are each a number satisfying equations 0.ltoreq.m.ltoreq.3, 0.ltoreq.n.ltoreq.3 and 0.ltoreq.m+n.ltoreq.3; and Sub-component (iii) which is an organometal compound of a metal of Groups I to IV of the Periodic Table. The organoaluminum component (B) is an organoaluminum compound represented by a formulaR.sup.3.sub.3-p H.sub.p Alwherein R.sup.3 indicates a hydrocarbyl group of up to 5 carbon atoms and p is a number satisfying an equation 0.ltoreq.p.ltoreq.1;the mole ratio in Al/Ti of Component (B) to Component (A) being no higher than 1. The poly .alpha.-olefins produced have a broader molecular weight distribution than those produced at a lower polymerization temperature.

摘要翻译： 公开了C3或更高级α-烯烃的齐格勒聚合，其特征在于齐格勒催化剂中使用的固体催化剂组分和有机铝组分，以及150至300℃的温度。固体催化剂组分 （A）包含作为包含Ti，Mg和卤素的齐格勒催化剂的固体催化剂组分的副组分（i） 作为由式：R1mXnSi（OR2）4-nm表示的硅化合物的副成分（ii），其中R1表示烃基，可以与R1相同或不同的R2表示烃基，X表示卤素 原子，并且m和n分别是满足式0≤n≤3,0≤n≤3和0≤m+ n <3的数; 和作为元素周期表第I〜Ⅳ族金属的有机金属化合物的亚成分（ⅲ）。 有机铝组分（B）是由式R33-pHpAl表示的有机铝化合物，其中R 3表示最多5个碳原子的烃基，p是满足等式0的数。 组分（B）与组分（A）的Al / Ti摩尔比不大于1.所生产的聚α-烯烃的分子量分布比聚合温度较低时的分子量分布宽。

公开(公告)号：US5275993A

公开(公告)日：1994-01-04

申请号：US903963

申请日：1992-06-26

申请人： Takashi Fujita ,  Kazuyo Kitagawa

发明人： Takashi Fujita ,  Kazuyo Kitagawa

IPC分类号： C08F4/60 ,  C08F4/649 ,  C08F4/654 ,  C08F8/00 ,  C08F10/00 ,  C08F297/08

CPC分类号： C08F297/086 ,  C08F10/00 ,  C08F297/083 ,  Y10S526/904

摘要： An olefin polymerization catalyst which is obtained by contacting the following components (A) and (B): component (A): a product of contacting the following components (A.sub.1) and (A.sub.2):component (A.sub.1): polyolefin powder having specific values of pore diameter, pore volume, average pore diameter and average particle diameter,component (A.sub.2): a solid component for a Ziegler catalyst comprising titanium, magnesium and a halogen as the essential components;component (B): an organoaluminum compound.The supporting state of the catalyst is improved, and a contaminant-free polymer having a satisfactorily large particle diameter without the lowering of the activity or the stereoregularity of the catalyst is successfully obtained.

摘要翻译： 通过使以下组分（A）和（B）接触获得的烯烃聚合催化剂：组分（A）：与下列组分（A1）和（A2）接触的产物：组分（A1）：具有特定值的聚烯烃粉末 的孔径，孔体积，平均孔径和平均粒径，组分（A2）：包含钛，镁和卤素作为必要组分的齐格勒催化剂的固体组分; 组分（B）：有机铝化合物。 催化剂的支持状态得到改善，并且成功地获得了不降低催化剂的活性或立构规整性的具有令人满意的大粒径的无污染物的聚合物。

公开(公告)号：US5143930A

公开(公告)日：1992-09-01

申请号：US645108

申请日：1991-01-24

申请人： Takao Yoshioka ,  Takashi Fujita ,  Tsutomu Kanai ,  Kanichi Nakamura ,  Hiroyoshi Horikoshi ,  Kunihiro Sasahara ,  Takeshi Kinoshita

发明人： Takao Yoshioka ,  Takashi Fujita ,  Tsutomu Kanai ,  Kanichi Nakamura ,  Hiroyoshi Horikoshi ,  Kunihiro Sasahara ,  Takeshi Kinoshita

IPC分类号： C07D277/34

CPC分类号： C07D277/34 ,  Y02P20/55

摘要： Compounds of formula (I): ##STR1## in which: A is a group of formula (II) or (III): ##STR2## W is methylene, carbonyl or >C.dbd.N--OV, where V is hydrogen, sulfo, acyl or alkyl; U is methylene, or W is absent and U is a carbon-carbon double bond between A and --CR.sup.1 (OH)--; R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen or alkyl; Y.sup.1 and Y.sup.2 are each hydrogen or a hydroxy-protecting group; and n is 1, 2 or 3 and salts thereof have anti-diabetic activity in mammals. Methods of preparing them are also provided.

公开(公告)号：US5023739A

公开(公告)日：1991-06-11

申请号：US308765

申请日：1989-02-10

申请人： Koichi Shinohara ,  Takashi Suzuki ,  Masao Kawagishi ,  Nobuo Satoh ,  Takeshi Murakami ,  Takashi Fujita

发明人： Koichi Shinohara ,  Takashi Suzuki ,  Masao Kawagishi ,  Nobuo Satoh ,  Takeshi Murakami ,  Takashi Fujita

IPC分类号： G11B23/087 ,  G11B23/50 ,  G11B33/14

CPC分类号： G11B33/1446 ,  G11B23/08785 ,  G11B23/502

摘要： A tape cassette for a magnetic recording tape having metallic magnetic recording layer is provided with a gas trapping layer which is disposed on a portion of the cassette near the path of the magnetic recording tape stretched between a pair of reels. The trapping layer has a trapping tendency which is at least equivalent to that of the magnetic recording tape. Any corrosive gas components coming into the cassette is adsorbed by and made to react with the trapping layer so as to reduce the concentration of the corrosive gas reaching the metallic magnetic recording layer, thus preventing degradation of the magnetic recording layer and ensuring that recording is conducted with high recording density.

摘要翻译： 具有金属磁记录层的磁记录带的带盒设置有气体捕获层，该气体捕获层设置在磁带记录带的在一对卷轴之间延伸的路径附近的一部分上。 捕获层具有至少等同于磁记录带的捕获趋势。 进入该盒的任何腐蚀性气体组分都被吸收层吸收并与捕获层反应，以减少到达金属磁记录层的腐蚀性气体的浓度，从而防止磁记录层的劣化并确保进行记录 具有高记录密度。

公开(公告)号：US4972034A

公开(公告)日：1990-11-20

申请号：US387788

申请日：1989-08-01

申请人： Mitsuyuki Matsuura ,  Takashi Fujita

发明人： Mitsuyuki Matsuura ,  Takashi Fujita

IPC分类号： C08F4/64 ,  C08F4/656 ,  C08F10/00

CPC分类号： C08F10/00 ,  Y10S526/904

摘要： A catalyst for the polymerization of olefins comprising a combination of a solid catalyst component (A) comprising a solid catalytic complex (i) containing titanium, magnesium and a halogen as the essential ingredients with an organoaluminium compound (B), wherein said solid catalyst component (A) is obtained by bringing the following ingredients (ii) and (iii) in contact with said solid catalytic complex (i):Ingredient (ii): a silicon compound represented by the general formula:R.sub.m.sup.1 X.sub.n Si(OR.sup.2).sub.4-m-nwherein R.sup.1 and R.sup.2 each stand for a hydrocarbyl residue, X denotes a halogen, and m and n are such that 0.ltoreq.m.ltoreq.3 and 0.ltoreq.n.ltoreq.3 are satisfied on condition that 0.ltoreq.m+n.ltoreq.3, andIngredient (iii): an organometallic compound selected from the group consisting of organozinc compounds and organomagnesium compounds. The catalyst makes it possible to eliminate what is called "outside electron donor" as a component for making up a final catalyst system.

公开(公告)号：US4933355A

公开(公告)日：1990-06-12

申请号：US337366

申请日：1989-04-13

申请人： Takao Yoshioka ,  Takashi Fujita ,  Yuichi Aizawa ,  Tsutomu Kanai ,  Hiroyoshi Horikoshi

发明人： Takao Yoshioka ,  Takashi Fujita ,  Yuichi Aizawa ,  Tsutomu Kanai ,  Hiroyoshi Horikoshi

IPC分类号： C07D277/20 ,  C07D277/38 ,  C07D277/42

CPC分类号： C07D277/20

摘要： Compounds of formula (I): ##STR1## in which: R.sup.1 and R.sup.2 are independently hydrogen, alkyl, aliphatic hydrocarbon groups having one or two carbon-carbon double or treble bonds, cycloalkyl, aryl, substituted aryl, aralkyl, substituted aralkyl, alkanoyl, alkenyol, cycloalkylcarbonyol, arylcarbonyl, substituted arylcarbonyl, arylalkanoyl, substituted arylalkanoyl, arylalkenoyl, substituted arylalkenoyl, alkoxycarbonyl, aryloxycarbonyl, substituted aryloxycarbonyl, aralkyloxycarbonyl, substituted aralkyloxycarbonyl, optionally substituted carbamoyl or thiocarbamoyol, alkylsulfonyl, haloalkylsulfonyl, arylsulfonyl, substituted arylsulfonyl, alkylthio, arylthio and substituted arylthio, or R.sup.1 and R.sup.2, together with the nitrogen atom to which they are attached, form a nitrogen-containing heterocyclic group; one of R.sup.a and R.sup.b is hydrogen, alkyl or halogen, and the other of R.sup.a and R.sup.b is a group of formula (II): ##STR2## R.sup.4 is hydrogen, carboxy, protected carboxy or optionally substituted carbamoyl; R.sup.5 is hydrogen, or carboxyalkyl or protected carboxyalkyl in which the alkyl part is C.sub.1 -C.sub.6 ; n=0, 1 or 2; X is oxygen or sulfur; are useful in the treatment of the complications attendant upon diabetes and may be prepared by condensation of a thiazolidine or rhodanine compound with a compound corresponding to the remainder of the molecule of the compound of formula (I).

公开(公告)号：US4904630A

公开(公告)日：1990-02-27

申请号：US217983

申请日：1988-07-12

申请人： Mitsuyuki Matsuura ,  Takashi Fujita

发明人： Mitsuyuki Matsuura ,  Takashi Fujita

IPC分类号： C08F4/64 ,  C08F4/656 ,  C08F10/00

CPC分类号： C08F10/00

摘要： A catalyst for olefin polymerization which comprises:Component (A) which is a solid catalyst component obtained by contacting the following components (i) to (iv):(i) a solid component comprising titanium, magnesium and halogen as essential elements,(ii) a silicon compound represented by the formula (I):R.sup.1.sub.m X.sub.n Si(OR.sup.2).sub.4-m-n (I) wherein R.sup.1 and R.sup.2 each represent a hydrocarbon residue, X represents a halogen, and each of m and n is an integer in the range of 0.ltoreq.m.ltoreq.3, 0.ltoreq.n.ltoreq.3, and 0.ltoreq.m+n.ltoreq.3,(iii) a titanium compound or a silicon compound represented by the formula (II) or (III):Ti(OR.sup.3).sub.4-l X.sub.l (II)R.sup.4.sub.4-l SiX.sub.l (III) wherein R.sup.3 represents a hydrocarbon residue, R.sup.4 represents hydrogen or a hydrocarbon residue, X represents a halogen, and l is an integer in the range of 0

公开(公告)号：US4703026A

公开(公告)日：1987-10-27

申请号：US872832

申请日：1986-06-11

申请人： Mitsuyuki Matsuura ,  Takashi Fujita

发明人： Mitsuyuki Matsuura ,  Takashi Fujita

IPC分类号： C08F4/64 ,  C08F10/00

CPC分类号： C08F10/00 ,  Y10S526/901

摘要： Disclosed is a catalyst component for polymerization of an olefin, which consists essentially of a contact reaction product of (A) a solid composition obtained by mixing and contacting a precipitating agent with a contact reaction product between a magnesium dihalide and a titanium tetraalkoxide and/or a polymer thereof, the addition of the precipitating agent being carried out with stirring at a stirring intensity lower than a level (2nf) two times the floatation limit stirring intensity (nf) of the reaction system, with (B) a liquid titanium compound and/or a halogen compound of silicon.This catalyst component has a high activity and provides a polymer in which the particle size is relatively large and the particle size distribution is sharply controlled.

摘要翻译： 公开了一种用于聚合烯烃的催化剂组分，其主要包括（A）通过将沉淀剂与二卤化镁和四烷氧基钛之间的接触反应产物混合并使其接触而获得的固体组合物的接触反应产物和/或 其特征在于，在搅拌强度下，在比（B）液体钛化合物和反应体系的漂浮极限搅拌强度（nf）的2倍的水平（2nf）低的搅拌强度下， /或硅的卤素化合物。 该催化剂组分具有高活性，并且提供了其中粒度相对较大并且粒度分布被急剧控制的聚合物。