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1. 发明授权

US5196578A Purification process of methacrylic acid 失效
标题翻译：甲基丙烯酸的纯化过程
公开(公告)号：US5196578A
公开(公告)日：1993-03-23
申请号：US758362
申请日：1991-09-10
申请人： Morimasa Kuragano , Takeshi Isobe , Nobutaka Ueda , Minoru Koshibe , Yoshihiro Sezaki , Hirozo Segawa , Katsuji Yoguchi , Rensuke Ikarashi
发明人： Morimasa Kuragano , Takeshi Isobe , Nobutaka Ueda , Minoru Koshibe , Yoshihiro Sezaki , Hirozo Segawa , Katsuji Yoguchi , Rensuke Ikarashi
IPC分类号： C07C51/44 , C07C51/487
CPC分类号： C07C51/44 , C07C51/487
摘要： A process is provided for the purification of methacrylic acid. The process can easily remove dibasic acids and aldehydes containing in trace amounts as impurities. According to the process, crude methacrylic acid obtained as an aqueous solution by vapor-phase catalytic oxidation of isobutylene, tertiary butanol, methacrolein or isobutyl aldehyde is treated with at least one compound selected from the group consisting of m-aminophenol, m-phenylenediamine, 2,4-diaminotoluene and 2,4-diamino-diphenylamine, followed by distillation, optionally, in the presence of a p-phenylene diamine.
摘要翻译：提供了用于纯化甲基丙烯酸的方法。该方法可以容易地除去含有微量杂质的二元酸和醛。根据该方法，通过气相催化氧化异丁烯，叔丁醇，异丁烯醛或异丁醛作为水溶液得到的粗甲基丙烯酸用至少一种选自间氨基苯酚，间苯二胺， 2,4-二氨基甲苯和2,4-二氨基 - 二苯胺，然后任选在对苯二胺存在下进行蒸馏。

2. 发明授权

US4987252A Quenching process of reaction product gas containing methacrylic acid and treatment method of quenched liquid 失效
标题翻译：含甲基丙烯酸的反应产物气淬火过程和淬火液处理方法
公开(公告)号：US4987252A
公开(公告)日：1991-01-22
申请号：US211903
申请日：1988-06-27
申请人： Morimasa Kuragano , Kozo Iwasaki , Takeshi Isobe , Isao Fukada , Minoru Koshibe , Yoshihiro Sezaki , Hirozo Segawa , Katsuji Yoguchi
发明人： Morimasa Kuragano , Kozo Iwasaki , Takeshi Isobe , Isao Fukada , Minoru Koshibe , Yoshihiro Sezaki , Hirozo Segawa , Katsuji Yoguchi
IPC分类号： C07C45/78 , C07C51/42 , C07C57/055 , C07C57/07
CPC分类号： C07C45/783 , C07C51/42
摘要： In order to recover methacrolein and/or methacrylic acid by quenching a reaction product gas obtained by catalytic oxidation of isobutylene or the like, the reaction product gas is charged into a quench column through a double-wall pipe and is then brought into contact with a condensate as a cooling medium. Deposition of terephthalic acid and the like inside the column is prevented by controlling the temperature of a bottom in the quench column and that of an overhead gas of a quench column unit. An aromatic carboxylic acid, aromatic aldehyde, metal powder is added to an aqueous solution of methacrylic acid, which contains terephthalic acid and the like, so that the terephthalic acid and the like are caused to precipitate for their removal.

3. 发明授权

US5028735A Purification and preparation processes for methyl methacrylate 失效
标题翻译：甲基丙烯酸甲酯的纯化和制备方法
公开(公告)号：US5028735A
公开(公告)日：1991-07-02
申请号：US501716
申请日：1990-03-30
申请人： Hirozo Segawa , Norio Ishikawa , Katsuji Yoguchi , Morimasa Kuragano , Minoru Koshibe
发明人： Hirozo Segawa , Norio Ishikawa , Katsuji Yoguchi , Morimasa Kuragano , Minoru Koshibe
IPC分类号： C07C67/54 , C07C69/54
CPC分类号： C07C29/88 , C07C67/54 , Y10S203/22
摘要： A purification process for methyl methacrylate (MMA) and a recovery process for methanol are disclosed. A mixture, which contains water, methanol and methyl methacrylate (MMA) as principal components along with at least one of methyl acrylate, methyl propionate and methacrylic acid, is azeotropically distilled together with hexane to obtain MMA in a form substantially free of water, methanol methyl acrylate, methyl propionate and hexane and a low boiling-point fraction. The low boiling-point fraction is cooled and separated into a water phase and an oil phase. Methanol can be recovered from the water phase by adding an alkaline substance to it and then distilling the resultant mixture. A preparation process of MMA is also disclosed. MMA can be prepared by esterifying methacrylic acid or methacrylamide with methanol and then applying the above purification process.

4. 发明授权

US4968846A Method for the prevention of post oxidation of methacrolein 失效
标题翻译：防止甲基丙烯醛后氧化的方法
公开(公告)号：US4968846A
公开(公告)日：1990-11-06
申请号：US217849
申请日：1988-07-12
申请人： Morimasa Kuragano , Kozo Iwasaki , Yoshio Koyama , Takeshi Isobe , Hirozo Segawa , Katsuji Yoguchi
发明人： Morimasa Kuragano , Kozo Iwasaki , Yoshio Koyama , Takeshi Isobe , Hirozo Segawa , Katsuji Yoguchi
IPC分类号： C07C47/22 , B01J8/06 , C07C45/00 , C07C45/35 , C07C45/37 , C07C45/38 , C07C45/78 , C07C45/86 , C07C67/00
CPC分类号： C07C45/38 , B01J8/067 , C07C45/35 , C07C45/37 , C07C45/86 , B01J2208/00212
摘要： This invention provides a method for the prevention of oxidation of resulting methacrolein immediately after its discharge from a reaction tube upon production of the methacrolein by vapor-phase oxidation of isobutylene, tertiary butanol or methallyl alcohol with a molecular-oxygen-containing gas in the presence of a catalyst. An inert gas and/or recirculated reaction gas or a mixed gas of an inert gas and/or recirculated reaction gas and air is fed and mixed with a reaction product gas immediately after an outlet of the reaction tube.

5. 发明授权

US5118487A Process for producing chlorosulfonyl isocyanate 失效
标题翻译：制备氯磺酰基异氰酸酯的方法
公开(公告)号：US5118487A
公开(公告)日：1992-06-02
申请号：US580868
申请日：1990-09-11
申请人： Akira Nakamura , Matsuo Ono , Toshiei Ataka , Hideo Shirakawa , Shizuo Noguchi , Hirozo Segawa
发明人： Akira Nakamura , Matsuo Ono , Toshiei Ataka , Hideo Shirakawa , Shizuo Noguchi , Hirozo Segawa
IPC分类号： C01C3/14
CPC分类号： C01C3/145
摘要： Provided is a process for producing chlorosulfonyl isocyanate by reacting sulfur trioxide with cyanogen chloride, which comprises feeding sulfur trioxide and cyanogen chloride simultaneously to the reaction zone and maintaining the temperature of the reacting zone at 10.degree. to 50.degree. C. This is a commercially very simple process and can produce chlorosulfonyl isocyanate with high purity in high yield.
摘要翻译：本发明提供了一种通过使三氧化硫与氯化氰反应来制备氯磺酰基异氰酸酯的方法，该方法包括同时向反应区中加入三氧化硫和氯化氰，并将反应区的温度保持在10℃至50℃。这是商业上非常简单的工艺，可以高产率生产高纯度的氯磺酰基异氰酸酯。

6. 发明授权

US4460403A 2,3-Dicyano 6 phenyl pyrazine herbicides 失效
标题翻译： 2,3-二氰基6苯基吡嗪除草剂
公开(公告)号：US4460403A
公开(公告)日：1984-07-17
申请号：US204038
申请日：1980-11-04
申请人： Tetsuo Takematsu , Hirozo Segawa , Takamaro Miura , Toshiei Ataka , Michio Chatani , Akira Nakamura
发明人： Tetsuo Takematsu , Hirozo Segawa , Takamaro Miura , Toshiei Ataka , Michio Chatani , Akira Nakamura
IPC分类号： A01N25/30 , A01N43/60 , A01N43/70 , A01N43/88 , A01N47/12 , A01N47/16 , A01P13/00 , C07D241/14 , C07D241/24 , C07D241/26
CPC分类号： C07D241/26 , A01N43/60 , A01N43/70 , A01N43/88 , A01N47/12 , A01N47/16 , C07D241/24
摘要： Novel 2,3-dicyanopyrazine derivatives of the formula ##STR1## wherein A represents a hydrogen atom, a lower alkyl group, an unsubstituted or substituted phenyl group, a benzyl group, or a group of the formula --ZR.sub.1 in which Z represents an oxygen or sulfur atom and R.sub.1 represents an unsubstituted or substituted lower alkyl group, a lower alkenyl group, a lower alkynyl group, an unsubstituted or substituted phenyl group, or an unsubstituted or substituted benzyl group; and B represents a halogen atom, an alkyl group containing at least 3 carbon atoms, a phenyl group having a substituent at the ortho- and/or meta-position of the benzene ring, a group of the formula ZR.sub.1 in which Z and R.sub.1 are as defined, or a group of the formula ##STR2## in which R.sub.2 and R.sub.3, independently from each other, represent a hydrogen atom, an unsubstituted or substituted lower alkyl group, a lower alkenyl group, a cycloalkyl group, an unsubstituted or substituted phenyl group, or an unsubstituted or substituted benzyl group, with the proviso that R.sub.2 and R.sub.3 do not represent a hydrogen atom at the same time, and R.sub.2 and R.sub.3 together may form a 3- to 7-membered heterocyclic ring together with the nitrogen atom to which they are bonded, said heterocyclic ring optionally containing an additional hetero atom; and processes for production thereof.These compounds have high herbicidal activity, and are useful as active ingredients of herbicides.
摘要翻译：式IMA的新型2,3-二氰基吡嗪衍生物，其中A表示氢原子，低级烷基，未取代或取代的苯基，苄基或式-ZR1的基团，其中Z表示氧或硫原子，R 1表示未取代或取代的低级烷基，低级烯基，低级炔基，未取代或取代的苯基，或未取代或取代的苄基; B表示卤素原子，含有3个以上碳原子的烷基，苯环的邻位和/或间位具有取代基的苯基，Z和R1分别为式ZR1的基团或其中R2和R3彼此独立地表示氢原子，未取代或取代的低级烷基，低级烯基，环烷基，未取代或取代的苯基的式基团或未取代或取代的苄基，条件是R 2和R 3不同时表示氢原子，并且R 2和R 3一起可以与氮原子一起形成3-至7-元杂环，所述杂环任选地含有另外的杂原子; 及其生产方法。这些化合物具有高除草活性，可用作除草剂的活性成分。

7. 发明授权

US4275174A Neutron shielding polymer composition and a process for producing the same 失效
标题翻译：中子屏蔽聚合物组合物及其制备方法
公开(公告)号：US4275174A
公开(公告)日：1981-06-23
申请号：US33819
申请日：1979-04-26
申请人： Shin-ichi Tadokoro , Hirozo Segawa
发明人： Shin-ichi Tadokoro , Hirozo Segawa
IPC分类号： C08F2/00 , C08F2/44 , C08F12/08 , C08F20/00 , C08F20/10 , C08F20/12 , C08F20/18 , C08F212/00 , C08F212/08 , C08F220/18 , C08F230/06 , C08K5/49 , C08K5/55 , C08L25/00 , C08L33/00 , C08L33/02 , C08L33/04 , G21F1/10 , C08F120/14 , C08K5/05
CPC分类号： G21F1/103 , C08F12/08 , C08F2/44 , C08F20/12 , C08F20/18 , C08F212/08 , C08F220/18 , C08F230/06 , C08K5/55 , G21F1/10 , Y10T428/31935 , Y10T428/31938
摘要： A neutron shielding polymer composition comprising a polymerization product of a base monomer ingredient containing as an essential ingredient at least one monomer selected from the group consisting of alkyl methacrylates containing 1-4 carbon atoms in the alkyl group and styrene in admixture with a saturated boric acid ester which contains as an essential constituent component a polyol containing 3-16 carbon atoms and in which a molar ratio A of said polyol to boron atoms in said boric acid ester formed from said polyol being in the range of 0.6
摘要翻译：一种中子屏蔽聚合物组合物，其包含含有作为必需成分的至少一种单体的基本单体成分的聚合产物，所述单体选自烷基中含有1-4个碳原子的甲基丙烯酸烷基酯和与饱和硼酸混合的苯乙烯酯，其含有3-16个碳原子的多元醇作为必需组分成分，其中由所述多元醇形成的所述硼酸酯中的所述多元醇与硼原子的摩尔比A在0.6

8. 发明授权

US4259489A 2,3-Dicyanopyrazines 失效
标题翻译： 2,3-二氰基吡嗪
公开(公告)号：US4259489A
公开(公告)日：1981-03-31
申请号：US969938
申请日：1978-12-15
申请人： Tetsuo Takematsu , Hirozo Segawa , Takamaro Miura , Toshiei Ataka , Michio Chatani , Akira Nakamura
发明人： Tetsuo Takematsu , Hirozo Segawa , Takamaro Miura , Toshiei Ataka , Michio Chatani , Akira Nakamura
IPC分类号： A01N43/60 , A01N43/70 , A01N43/88 , A01N47/12 , A01N47/16 , C07D241/24 , C07D241/26 , C07D241/06
CPC分类号： C07D241/26 , A01N43/60 , A01N43/70 , A01N43/88 , A01N47/12 , A01N47/16 , C07D241/24
摘要： Novel 2,3-dicyanopyrazine derivatives of the formula ##STR1## wherein A represents a hydrogen atom, a lower alkyl group, an unsubstituted or substituted phenyl group, a benzyl group, or a group of the formula -ZR.sub.1 in which Z represents an oxygen or sulfur atom and R.sub.1 represents an unsubstituted or substituted lower alkyl group, a lower alkenyl group, a lower alkynyl group, an unsubstituted or substituted phenyl group, or an unsubstituted or substituted benzyl group; and B represents a halogen atom, an alkyl group containing at least 3 carbon atoms, a phenyl group having a substituent at the ortho- and/or meta-position of the benzene ring, a group of the formula ZR.sub.1 in which Z and R.sub.1 are as defined, or a group of the formula ##STR2## in which R.sub.2 and R.sub.3, independently from each other, represent a hydrogen atom, an unsubstituted or substituted lower alkyl group, a lower alkenyl group, a cycloalkyl group, an unsubstituted or substituted phenyl group, or an unsubstituted or substituted benzyl group, with the proviso that R.sub.2 and R.sub.3 do not represent a hydrogen atom at the same time, and R.sub.2 and R.sub.3 together may form a 3- to 7-membered heterocyclic ring together with the nitrogen atom to which they are bonded, said heterocyclic ring optionally containing an additional hetero atom; and processes for production thereof.These compounds have high herbicidal activity, and are useful as active ingredients of herbicides.
摘要翻译：式IMA的新型2,3-二氰基吡嗪衍生物，其中A表示氢原子，低级烷基，未取代或取代的苯基，苄基或式-ZR1的基团，其中Z表示氧或硫原子，R 1表示未取代或取代的低级烷基，低级烯基，低级炔基，未取代或取代的苯基，或未取代或取代的苄基; B表示卤素原子，含有3个以上碳原子的烷基，苯环的邻位和/或间位具有取代基的苯基，Z和R1分别为式ZR1的基团或其中R2和R3彼此独立地表示氢原子，未取代或取代的低级烷基，低级烯基，环烷基，未取代或取代的苯基的式基团或未取代或取代的苄基，条件是R 2和R 3不同时表示氢原子，并且R 2和R 3一起可以与氮原子一起形成3-至7-元杂环，所述杂环任选地含有另外的杂原子; 及其生产方法。这些化合物具有高除草活性，可用作除草剂的活性成分。

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