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公开(公告)号：US4108893A
公开(公告)日：1978-08-22
申请号：US762842
申请日：1977-01-27
申请人： Shiro Asano , Kohei Shizuka , Junji Mikami , Kenichi Hirakawa , Mutsuo Matsumura
发明人： Shiro Asano , Kohei Shizuka , Junji Mikami , Kenichi Hirakawa , Mutsuo Matsumura
IPC分类号： C07C231/06 , B01D15/04 , C07C20060101 , C07C67/00 , C07C231/00 , C07C231/24 , C07C233/09 , C08F120/56
CPC分类号： C07C233/09
摘要： An improved process is disclosed for the purification of an aqueous solution of acrylamide. It comprises bringing a crude aqueous solution of acrylamide into contact with oxygen or an oxygen-containing gas and thereafter subjecting the solution to a dual treatment with a strongly acidic cation exchange resin followed by a weakly basic anion exchange resin. If necessary, the aqueous solution of acrylamide is treated, while maintaining its oxygen content at least at 4ppm and then subjected to the treatment with the ion exchange resins.
摘要翻译： 公开了用于纯化丙烯酰胺水溶液的改进方法。 其包括将丙烯酰胺的粗制水溶液与氧气或含氧气体接触，然后用强酸性阳离子交换树脂和弱碱性阴离子交换树脂进行双重处理。 如果需要，处理丙烯酰胺水溶液，同时保持其氧含量至少为4ppm，然后用离子交换树脂进行处理。
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公开(公告)号：US4345101A
公开(公告)日：1982-08-17
申请号：US269602
申请日：1981-06-02
申请人： Shiro Asano , Kohei Shizuka , Yoshihiko Kambara , Junji Mikami , Hiroshi Kato , Tadatoshi Honda
发明人： Shiro Asano , Kohei Shizuka , Yoshihiko Kambara , Junji Mikami , Hiroshi Kato , Tadatoshi Honda
IPC分类号： C07C231/24 , B01J23/00 , C07C233/09 , C07C253/34 , C08F20/52 , C08F120/56 , C07C103/133
CPC分类号： C07C253/34 , C07C231/24
摘要： An aqueous solution of acrylamide obtained by catalytic hydration of acrylonitrile in the presence of a copper-based catalyst is purified by the steps, in sequence, of (a) removal of the unreacted acrylonitrile, (b) removal of copper, (c) treatment under basic conditions, (d) cation exchanging treatment and (e) weakly basic anion exchanging treatment. The acrylamide obtained by this process has good storage stability. An acrylamide polymer produced from this monomer is useful as a flocculant having a reduced content of the unreacted monomer, a high molecular weight and excellent solubility in water.
摘要翻译： 通过在（a）去除未反应的丙烯腈，（b）去除铜，（c）处理（c）处理的步骤中，按照以下步骤来纯化在铜基催化剂存在下通过丙烯腈的催化水合获得的丙烯酰胺水溶液 在碱性条件下，（d）阳离子交换处理和（e）弱碱性阴离子交换处理。 通过该方法获得的丙烯酰胺具有良好的储存稳定性。 由该单体制备的丙烯酰胺聚合物可用作具有降低的未反应单体含量，高分子量和优异的在水中的溶解度的絮凝剂。
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公开(公告)号：US4921933A
公开(公告)日：1990-05-01
申请号：US199910
申请日：1988-05-27
申请人： Masanori Osawa , Kohei Shizuka , Masahiro Kouno , Akio Matsuyama , Hirotoshi Katsuoka , Kazumi Mizutani
发明人： Masanori Osawa , Kohei Shizuka , Masahiro Kouno , Akio Matsuyama , Hirotoshi Katsuoka , Kazumi Mizutani
CPC分类号： C08G69/32
摘要： Aromatic polyamide having good high-temperature resistance and processing ability is obtained by specifying the ratio of storage modulus at the glass transition temperature (Tg).degree.C. to that of (Tg+100).degree.C.
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4.发明授权
公开(公告)号：US4736008A
公开(公告)日：1988-04-05
申请号：US943699
申请日：1986-12-19
申请人： Masahiro Kouno , Akihiro Yamaguchi , Masanori Osawa , Kohei Shizuka , Hiromi Nakano , Kazumi Mizutani
发明人： Masahiro Kouno , Akihiro Yamaguchi , Masanori Osawa , Kohei Shizuka , Hiromi Nakano , Kazumi Mizutani
CPC分类号： C08G18/163 , C08G18/168 , C08G18/1875 , C08G18/225 , C08G18/34
摘要： Disclosed herein is a process for preparing heat-resistant polymers by reacting an organic polyisocyanate with one or more compounds selected from the group consisting of organic polycarboxylic acids and organic polycarboxylic acid anhydrides in the presence of an alkali metal fluoride or an alkali metal fluoride combined with a quaternary onium salt as a catalyst.
摘要翻译： 本文公开了一种制备耐热聚合物的方法，该方法是在有机多异氰酸酯与一种或多种选自有机多元羧酸和有机多元羧酸酐的化合物的存在下，在碱金属氟化物或碱金属氟化物的存在下，与 季铵盐作为催化剂。
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5.发明授权
公开(公告)号：US4785069A
公开(公告)日：1988-11-15
申请号：US139600
申请日：1987-12-29
申请人： Masahiro Kouno , Akihiro Yamaguchi , Masanori Osawa , Kohei Shizuka , Hiromi Nakano , Kazumi Mizutani
发明人： Masahiro Kouno , Akihiro Yamaguchi , Masanori Osawa , Kohei Shizuka , Hiromi Nakano , Kazumi Mizutani
CPC分类号： C08G18/163 , C08G18/168 , C08G18/1875 , C08G18/225 , C08G18/34
摘要： Disclosed herein is a process for preparing heat-resistant polymers by reacting an organic polyisocyanate with one or more compounds selected from the group consisting of organic polycarboxylic acids and organic polycarboxylic acid anhydrides in the presence of an alkali metal fluoride or an alkali metal fluoride combined with a quaternary onium salt as a catalyst.
摘要翻译： 本文公开了一种制备耐热聚合物的方法，该方法是在有机多异氰酸酯与一种或多种选自有机多元羧酸和有机多元羧酸酐的化合物的存在下，在碱金属氟化物或碱金属氟化物的存在下，与 季铵盐作为催化剂。
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6.发明授权Catalytic preparation of polyamide or polyamide-polymide with N,N'-dimethyl alkylene urea solvent 失效用N，N'-二甲基亚烷基脲溶剂催化制备聚酰胺或聚酰胺 - 聚酰胺
公开(公告)号：US4795795A
公开(公告)日：1989-01-03
申请号：US828530
申请日：1986-02-12
申请人： Masahiro Kouno , Kazumi Mizutani , Masanori Osawa , Kohei Shizuka , Toshihiro Toyoda , Hiromi Nakano
发明人： Masahiro Kouno , Kazumi Mizutani , Masanori Osawa , Kohei Shizuka , Toshihiro Toyoda , Hiromi Nakano
CPC分类号： C08G69/26 , C08G18/34 , C08G73/1035
摘要： A polyamide and/or polyimide is prepared by using N,N'-dimethylethyleneurea or N,N'-dimethylpropyleneurea as a solvent upon polycondensation of a polycarboxylic acid and a diisocyanate at a temperature above 100.degree. C. in the presence of an alkali metal carbonate, alkali metal hydrogencarbonate, alkali metal hydroxide or an alkali metal salt of a polycarboxylic acid.
摘要翻译： 聚酰胺和/或聚酰亚胺是通过使用N，N'-二甲基亚乙基脲或N，N'-二甲基亚丙基脲作为溶剂在多元羧酸和二异氰酸酯在100℃以上的温度下在碱金属 碳酸盐，碱金属碳酸氢盐，碱金属氢氧化物或多元羧酸的碱金属盐。
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7.发明授权
公开(公告)号：US5080495A
公开(公告)日：1992-01-14
申请号：US573810
申请日：1990-08-28
IPC分类号： G01N25/18
CPC分类号： G01N25/18
摘要： Disclosed is a method for measuring the thermal diffusivity in the thickness direction of a thin sample plate, which has the steps of forming a conductive thin layer on at least one surface of said thin sample plate to allow the thin film to function as an ac heater generating joule heat, applying an ac current modulated with a given modulation frequency to the ac heater (conductive thin layer) so as to produce ac joule-heating, generating an oscillation response corresponding to said ac joule-heating on the opposite surface of the ac heater, and measuring the phase shift between said oscillation response, and the ac joule-heating, thereby obtaining the thermal diffusivity in the thickness direction of said sample plate. Apparatus useful for the method are also disclosed.
摘要翻译： 公开了一种用于测量薄样品板的厚度方向的热扩散率的方法，其具有在所述薄样品板的至少一个表面上形成导电薄层以允许薄膜用作交流加热器的步骤 产生焦耳热，将以给定调制频率调制的交流电流施加到交流加热器（导电薄层），以产生交流加热，在交流电流的相对表面上产生对应于所述交流焦耳加热的振荡响应 加热器，并测量所述振荡响应和交流焦加热之间的相移，从而获得所述样品板的厚度方向上的热扩散率。 还公开了对该方法有用的装置。
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8.发明授权
公开(公告)号：US4758649A
公开(公告)日：1988-07-19
申请号：US49253
申请日：1987-05-13
申请人： Shoji Asano , Akio Ohmory , Akitsugu Akiyama , Masanori Osawa , Kohei Shizuka , Masahiro Kouno
发明人： Shoji Asano , Akio Ohmory , Akitsugu Akiyama , Masanori Osawa , Kohei Shizuka , Masahiro Kouno
摘要： Heat resistant organic fibers comprising a wholly aromatic polymer having amide group and/or imide group, said fibers having properties satisfying the following formulasTm.gtoreq.350.degree. C.,Tm-Tex.gtoreq.30.degree. C.Xc.gtoreq.10%DE.gtoreq.10%DSR(Tm).ltoreq.15%, and ##EQU1## wherein Tm is a melting point; Tex is an exotherm starting temperature; Xc is a degree or crystallization; DE is an elongation; DSR is a dry shrinkage factor at Tm; and DSR(Tm+55.degree. C.) is a dry shrinkage factor at Tm+55.degree. C. The process for producing the fibers is also disclosed.
摘要翻译： 含有具有酰胺基和/或酰亚胺基的全芳香族聚合物的耐热性有机纤维，所述纤维具有满足下式的性质Tm> / = 350℃，Tm-Tex> / = 30℃Xc> = 10 ％DE> / = 10％DSR（Tm）
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