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71. 发明授权

US5354890A Aromatic diamine intermediates useful in the preparation of polyimides 失效
标题翻译：用于制备聚酰亚胺的芳族二胺中间体
公开(公告)号：US5354890A
公开(公告)日：1994-10-11
申请号：US80772
申请日：1993-06-24
申请人： Shoji Tamai , Wataru Yamashita , Yuichi Okawa , Yuko Ishihara , Keizaburo Yamaguchi , Akihiro Yamaguchi
发明人： Shoji Tamai , Wataru Yamashita , Yuichi Okawa , Yuko Ishihara , Keizaburo Yamaguchi , Akihiro Yamaguchi
IPC分类号： C07C225/22 , C08G73/10 , C08G73/14
CPC分类号： C07C225/22 , C08G73/1014 , C08G73/1017 , C08G73/1039 , C08G73/1067 , C08G73/14
摘要： A heat-resistant and thermoplastic polyimide which has low dielectric characteristics and recurring structural units of the following formula: ##STR1## wherein R is a tetravalent radical having from 2 to 27 carbon atoms and selected from the group consisting of an aliphatic radical, alicyclic radical, monoaromatic radical, condensed polyaromatic radical and noncondensed aromatic radical connected each other with a direct bond or a bridge member; aromatic diamines which are useful for the raw material monomers of the polyimide and have following formulas: ##STR2## and a process for preparing the polyimide of the above formula by reacting these aromatic diamines with a tetracarboxylic dianhydride in the presence of an aromatic dicarboxylic anhydride or aromatic monoamine, and successively thermally or chemically imidizing the resultant polyamic acid; are disclosed.
摘要翻译：具有低介电特性和具有下式的重复结构单元的耐热热塑性聚酰亚胺：其中R是具有2至27个碳原子并且选自脂族基团的四价基团，脂环族基团，单芳族基团，稠合多芳族基团和非缩合芳族基团彼此直接连接或桥接成员; 芳族二胺可用于聚酰亚胺的原料单体，具有以下分子式：＆lt; IMAGE＆gt;（IA）和＆lt; IMAGE＆gt;（IB）和通过使这些芳族二胺与四羧酸二酐在芳族二羧酸酐或芳族单胺的存在下，并依次热或化学酰亚胺化所得聚酰胺酸; 被披露。

72. 发明授权

US5302743A Preparation of N-protected .alpha.-L-aspartyl-L-phenylalanine methyl ester 失效
标题翻译： N-保护的α-L-天冬氨酰基-L-苯丙氨酸甲酯的制备
公开(公告)号：US5302743A
公开(公告)日：1994-04-12
申请号：US823538
申请日：1992-01-21
申请人： Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
发明人： Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
IPC分类号： C07K5/075 , C07C229/00
CPC分类号： C07K5/0613 , Y02P20/55
摘要： Disclosed is an improved process for the preparation of an N-protected .alpha.-L-aspartyl-L-phenylalanine methyl ester from an N-protected L-aspartic anhydride and L-phenylalanine methyl ester, the improvement which comprises employing the L-phenylalanine methyl ester in the form of a mineral acid salt thereof and conducting the reaction either (a) in an organic solvent and in the presence of a salt of an organic carboxylic acid, or (b) in an organic solvent comprising an organic carboxylic acid and in the presence of at least one member of the group consisting of an alkali metal or an alkaline earth metal inorganic base, an ammonium alkali metal or alkaline earth metal salt of an organic carboxylic acid and ammonium carbonate. The starting N-protected aspartic anhydride, e.g., N-benzyloxycarbonyl-L-aspartic anhydride, can be produced by the reaction of N-protected aspartic acid with phosgene. When the N-protecting group sibenzyloxycarbonyl and the solvent is acetic acid, the desired product can be isolated from the reaction mixture in crystalline form in high purity by adding water thereto.
摘要翻译：公开了一种由N-保护的L-天冬氨酸酐和L-苯丙氨酸甲酯制备N-保护的α-L-天冬氨酰-L-苯丙氨酸甲酯的改进方法，其改进包括使用L-苯丙氨酸甲酯酯，其为无机酸盐，并且在有机溶剂中和有机羧酸的盐存在下进行反应，或（b）在包含有机羧酸的有机溶剂中和存在由碱金属或碱土金属无机碱组成的组中的至少一种，有机羧酸的铵碱金属或碱土金属盐和碳酸铵。起始的N-保护的天冬氨酸酐，例如N-苄氧基羰基-L-天冬氨酸酐可以通过N-保护的天冬氨酸与光气的反应来制备。当N-保护基团苄氧基羰基和溶剂为乙酸时，可以通过向其中加入水从所述反应混合物中以高纯度从结晶形式中分离所需产物。

73. 发明授权

US5283357A Separation method of .alpha.-l-aspartyl-l-phenylalanine methyl ester 失效
标题翻译： α1-天冬氨酰基-1-苯丙氨酸甲酯的分离方法
公开(公告)号：US5283357A
公开(公告)日：1994-02-01
申请号：US688709
申请日：1991-04-23
申请人： Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
发明人： Toshio Katoh , Chojiro Higuchi , Takeshi Oura , Masanobu Ajioka , Akihiro Yamaguchi
IPC分类号： C07K5/072 , C07K5/075 , C07C227/34 , C07C227/38
CPC分类号： C07K5/0613
摘要： A method for separating .alpha.-L-aspartyl-L-phenylalanine methyl ester (.alpha.-APM) from a solution containing .alpha.-APM and impurities associated with the production thereof which comprises adding a mineral acid or an organic sulfonic acid to the solution in an organic carboxylic acid or in a solvent containing an organic carboxylic acid, and isolating the pure salt of .alpha.-APM which precipitates therefrom.
摘要翻译：从含有α-APM的溶液和与其生产相关的杂质的溶液中分离α-L-天冬氨酰基-L-苯丙氨酸甲酯（α-APM）的方法，其包括在无机酸或有机磺酸中加入无机酸或有机磺酸有机羧酸或含有机羧酸的溶剂中，并分离其中沉淀的α-APM的纯盐。

74. 发明授权

US5268446A Readily processable polyimide and preparation process of same 失效
标题翻译：易于加工的聚酰亚胺及其制备方法相同
公开(公告)号：US5268446A
公开(公告)日：1993-12-07
申请号：US743105
申请日：1991-08-09
申请人： Shoji Tamai , Masahiro Ohta , Akihiro Yamaguchi
发明人： Shoji Tamai , Masahiro Ohta , Akihiro Yamaguchi
IPC分类号： C08G73/10 , C08G69/26
CPC分类号： C08G73/1071 , C08G73/1014
摘要： A readily melt-processable polyimide obtained by reacting diamino-diphenyl ether with 3,3',4,4'-biphenyltetracarboxylic dianhydride in the presence of phthalic anhydride and thermally or chemically imidizing the resultant polyamic acid.

75. 发明授权

US5206438A Aromatic diamine compounds, bismaleimide compounds, thermosetting resin forming compositions therefrom, resins therefrom, and methods for their preparation 失效
标题翻译：芳族二胺化合物，双马来酰亚胺化合物，形成其组合物的热固性树脂，其树脂及其制备方法
公开(公告)号：US5206438A
公开(公告)日：1993-04-27
申请号：US601424
申请日：1990-10-23
申请人： Keizaburo Yamaguchi , Tatsuhiro Urakami , Yoshimitsu Tanabe , Midori Yamazaki , Shoji Tamai , Norimasa Yamaya , Masahiro Ohta , Akihiro Yamaguchi
发明人： Keizaburo Yamaguchi , Tatsuhiro Urakami , Yoshimitsu Tanabe , Midori Yamazaki , Shoji Tamai , Norimasa Yamaya , Masahiro Ohta , Akihiro Yamaguchi
IPC分类号： C07C201/12 , C07C205/38 , C07C213/02 , C07C217/90 , C07D207/44 , C07D207/452 , C08G73/12
CPC分类号： C07D207/452 , C07C205/38 , C07C217/90 , C08G73/124
摘要： Disclosed is an aromatic diamine compound represented by the formula (I) ##STR1## wherein R is H or CH.sub.3. Also disclosed is a bismaleimide compound represented by the formula (IV) ##STR2## wherein R is H or CH.sub.3, A resin forming composition comprising these compounds is also disclosed. The compounds are useful as raw materials for resins, and the resin forming composition and the resin can provide excellent heat resistance and impact resistance and low hygroscopicity.

76. 发明授权

US5205894A Polyimide and high-temperature adhesive of polyimide 失效
标题翻译：聚酰亚胺和高温胶粘剂
公开(公告)号：US5205894A
公开(公告)日：1993-04-27
申请号：US724548
申请日：1991-06-17
申请人： Masahiro Ohta , Saburo Kawashima , Yoshiho Sonobe , Shoji Tamai , Hideaki Oikawa , Kouji Ohkoshi , Akihiro Yamaguchi
发明人： Masahiro Ohta , Saburo Kawashima , Yoshiho Sonobe , Shoji Tamai , Hideaki Oikawa , Kouji Ohkoshi , Akihiro Yamaguchi
IPC分类号： C08G73/10 , C09J179/08
CPC分类号： C08G73/1039 , C08G73/105 , C08G73/1064 , C08G73/1071 , C09J179/08
摘要： Polyimide having repeating units of the following formula (I) and its polyamic acid precursor having repeating units of the following formula (II) are disclosed; ##STR1## (where Y is a radical selected from the group consisting of a bond, divalent hydrocarbon having 1 to 10 carbons, hexafluorinated isopropylidene, carbonyl, thio, sulfinyl, sulfonyl and oxide, and R is a tetra-valent radical selected from the group consisting of aliphatic radical having 2 and more carbons, cyclo-aliphatic radical, monoaromatic radical, condensed polyaromatic radical, and non-condensed polyaromatic radical wherein aromatic radicals are mutually connected with a bond or a crosslinking function).Typical examples of polyimide and polyamic acid include where Y is thio radical and R is ##STR2## Y is a bond and R is III or IV, and Y is isopropylidene radical and R is IV.The polymers can be prepared from corresponding diamine and tetracarboxylic acid dianhydride.Polyimide or polyamic acid of this invention is excellent for high-temperature adhesive.

77. 发明授权

US5196506A Polymide 失效
标题翻译：聚酰亚胺
公开(公告)号：US5196506A
公开(公告)日：1993-03-23
申请号：US914016
申请日：1992-07-15
申请人： Shoji Tamai , Masahiro Ohta , Akihiro Yamaguchi
发明人： Shoji Tamai , Masahiro Ohta , Akihiro Yamaguchi
IPC分类号： C08G73/10 , H01L23/29
CPC分类号： H01L23/293 , C08G73/105 , H01L2924/0002
摘要： A polyimide having a high heat-resistance good processability and recurring structural units of the formula (I): ##STR1## wherein R is a tetravalent radical selected from the group consisting of an aliphatic radical having at least two carbon atoms, alicyclic radical, monocyclic aromatic radical, fused polycyclic aromatic radical and polycyclic aromatic radical bonded through a direct bond or a bridge member.
摘要翻译：具有高耐热性良好加工性的聚酰亚胺和式（I）的重复结构单元：其中R是选自以下的四价基团：至少具有至少两个碳原子，脂环族基团，单环芳族基团，稠合多环芳族基团和多环芳族基团通过直接键或桥连接键合。

78. 发明授权

US5171468A Aromatic polyisocyanate 失效
标题翻译：芳香族多异氰酸酯
公开(公告)号：US5171468A
公开(公告)日：1992-12-15
申请号：US773787
申请日：1991-10-11
申请人： Kiyoshi Shikai , Ryuzi Haseyama , Kouzou Hayashi , Katsuyoshi Sasagawa , Akihiro Yamaguchi
发明人： Kiyoshi Shikai , Ryuzi Haseyama , Kouzou Hayashi , Katsuyoshi Sasagawa , Akihiro Yamaguchi
IPC分类号： C07C265/14 , C08G18/76
CPC分类号： C08G18/7664 , C07C265/14
摘要： Disclosed herein are a polyiscoyanate comprising a mixture of aromatic polyisocyanates represented by the general formula: ##STR1## wherein A is a phenylene group, alkylene group, alkyl-substituted phenylene group, diphenylene group, diphenyl ether group or naphthylenyl group, R.sub.1 is a halogen atom, lower alkoxy group with a carbon number of 4 or less or lower alkyl group with a carbon number of 5 or less, R.sub.1 s may be the same or different from each other and may form a ring, l is 1 or 2, m is an integer of 0-3, and n is a integer of 0-300, and a production process thereof.
摘要翻译：本文公开了包含由以下通式表示的芳族多异氰酸酯的混合物的多氰酸酯：其中A是亚苯基，亚烷基，烷基取代的亚苯基，二亚苯基，二苯基醚基或萘基，R1 碳原子数为4以下的低级烷氧基，碳数为5以下的低级烷氧基，R 1可以相同也可以不同，可以形成环，l为1或2 m为0-3的整数，n为0〜300的整数及其制造方法。

79. 发明授权

US5086125A Polyimide resin composition 失效
公开(公告)号：US5086125A
公开(公告)日：1992-02-04
申请号：US574502
申请日：1990-08-24
申请人： Masahiro Ohta , Saburo Kawashima , Katsuaki Iiyama , Shoji Tamai , Hideaki Oikawa , Akihiro Yamaguchi
发明人： Masahiro Ohta , Saburo Kawashima , Katsuaki Iiyama , Shoji Tamai , Hideaki Oikawa , Akihiro Yamaguchi
IPC分类号： C08L79/08
CPC分类号： C08L79/08 , Y10S525/906 , Y10S525/928
摘要： This invention relates to molding resin compositions, and more particularly relates to polyimide resin compositions having markedly improved molding ability in addition to excellent high temperature stability, chemical resistance and mechanical strength.The polyimide resin composition of this invention comprises 99.9 to 50% by weight of the polyimide and 0.1 to 50% by weight of high temperature engineering polymer. The polyimide has recurring units of the following formula: ##STR1## wherein X is a sulfonyl radical or a carbonyl radical and R is a tetravalent radical selected from an aliphatic radical, alicyclic radical, monoaromatic radical, condensed aromatic radical and non-condensed aromatic radical. R is, for example, ##STR2## The high temperature engineering polymer is, for example, polyphenylene sulfide consisting of recurring units of the formula: ##STR3## aromatic polysulfone consisting of recurring units of the formula: ##STR4## or aromatic polyetherimide consisting of recurring units of the formula: ##STR5##

80. 发明授权

US5084507A Thermosetting resin composition 失效
公开(公告)号：US5084507A
公开(公告)日：1992-01-28
申请号：US488480
申请日：1990-02-27
申请人： Norimasa Yamaya , Masahiro Ohta , Akihiro Yamaguchi
发明人： Norimasa Yamaya , Masahiro Ohta , Akihiro Yamaguchi
IPC分类号： C08G73/12 , C08K3/14 , C08K3/22 , C08K3/36
CPC分类号： C08K3/22 , C08G73/124 , C08G73/125 , C08G73/127 , C08K3/14 , C08K3/36
摘要： A thermosetting resin composition formed of a polyaminobismaleimide resin, which is composed of a bismaleimide compound and a diamine compound, and a powdery inorganic filler. The composition has excellent heat resistance as well as superb mechanical properties at high temperature not to mention room temperature, and is expected to find wide-spread commerical utility in electric and electronic components such as sealing materials, sockets and connectors and other applications.

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