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1. 发明授权

US5504185A Process for production of polyamides, polyamides produced by said process and polyamide film or sheet 失效
标题翻译：用于生产聚酰胺，由所述方法生产的聚酰胺和聚酰胺膜或片材的方法
公开(公告)号：US5504185A
公开(公告)日：1996-04-02
申请号：US141593
申请日：1993-10-27
申请人： Tsukasa Toki , Masahiro Harada , Yasuo Inaba
发明人： Tsukasa Toki , Masahiro Harada , Yasuo Inaba
IPC分类号： C08G69/26 , C08G69/28 , C08J5/18
CPC分类号： C08J5/18 , C08G69/26 , C08G69/28 , C08J2377/06
摘要： A process for the production of a polyamide, which comprises polycondensing adipic acid prepared by nitric acid oxidation and containing 1 ppm by weight or less of a free mineral acid as an impurity with a diamine represented by formula (1)H.sub.2 N--CH.sub.2 --R--CH.sub.2 --NH.sub.2 . . . (1)wherein R denotes a linear or branched alkylene group having 2 to 10 carbon atoms, a m-phenylene group, a p-phenylene group, a 1,3-cyclohexylene group or a 1,4-cyclohexylene group; a polyamide produced by said process; and a film or sheet made of the above polyamide.
摘要翻译：一种制备聚酰胺的方法，其包括通过硝酸氧化制备的缩聚己二酸并含有1重量ppm或更少的游离无机酸作为杂质与由式（1）表示的二胺H 2 N-CH 2 -R- CH2-NH2。。。（1）其中R表示具有2-10个碳原子的直链或支链亚烷基，间亚苯基，对亚苯基，1,3-亚环己基或1,4-亚环己基; 由该方法生产的聚酰胺; 以及由上述聚酰胺制成的薄膜或薄片。

2. 发明授权

US5587447A Copolyamide production method 失效
标题翻译：共聚酰胺生产方法
公开(公告)号：US5587447A
公开(公告)日：1996-12-24
申请号：US417118
申请日：1995-04-05
申请人： Masahiro Harada , Yasuo Inaba
发明人： Masahiro Harada , Yasuo Inaba
IPC分类号： C08G69/26 , C08G69/28
CPC分类号： C08G69/265 , C08G69/28
摘要： A method for producing a copolyamide, which comprises (1) heating either one dicarboxylic acid selected from the group consisting of adipic acid and a mixture containing 40 mol % or more of adipic acid to a temperature higher than the melting point of adipic acid but lower than a temperature lower by 30.degree. C. than the melting point of the resulting copolyamide, (2) dropping a diamine comprising paraxylylene diamine and metaxylylene diamine into the heated dicarboxylic acid before a conversion of the dicarboxylic acid reaches 90 mol %, (3) stopping dropping of the diamine before the conversion of the dicarboxylic acid reaches 90 mol %, and dropping metaxylylene diamine or a diamine mixture of metaxylylene diamine and paraxylylene diamine in place of the diamine until a molar ratio of the total of the diamines to the total of the dicarboxylic acids becomes 0.97 to 1.03, and (4) heating a reaction system to a temperature higher than a temperature lower by 30.degree. C. than the melting point of the finally formed copolyamide before the conversion of the dicarboxylic acid reaches 95 mol %, and elevating the temperature of the reaction system to a temperature higher than the melting point of the finally formed copolyamide upon termination of dropping the diamine.
摘要翻译：一种制备共聚酰胺的方法，其包括（1）将选自己二酸和含40mol％或更多己二酸的混合物中的一种二羧酸加热至高于己二酸熔点但较低的温度比所得共聚酰胺的熔点低30℃的温度，（2）在二羧酸的转化率达到90摩尔％之前，将包含对二甲苯二胺和间苯二胺的二胺滴加到加热的二羧酸中，（3）在二羧酸转化率达到90mol％之前停止二胺的滴加，并滴加二亚甲基二胺或二亚胺二甲苯与二亚胺二胺混合物代替二胺，直到二胺的总量与总二胺的摩尔比二羧酸变为0.97〜1.03，（4）将反应体系加热到比熔点低30℃的温度的最终形成的共聚酰胺在二羧酸转化率达到95mol％之前，并且当终止滴加二胺时，将反应体系的温度升高到高于最终形成的共聚酰胺的熔点的温度。

3. 发明授权

US4361733A Hard-of-hearing aid appliance 失效
标题翻译：助听器助听器
公开(公告)号：US4361733A
公开(公告)日：1982-11-30
申请号：US172739
申请日：1980-07-28
申请人： Yozo Marutake , Tatsuro Fukutome , Yasuo Inaba , Kunihiko Fukuyama
发明人： Yozo Marutake , Tatsuro Fukutome , Yasuo Inaba , Kunihiko Fukuyama
IPC分类号： H04B5/00 , H04R25/00 , H04R25/04
CPC分类号： H04R25/554 , H04B5/0006
摘要： A hearing aid appliance has induction loops which are magnetically coupled to hearing aids held individually by hard-of-hearing persons. The number of induction loops is an integral multiple of two, and each induction loop is in the form of a rectangle having at least two parallel sides. The parallel sides of the induction loops are arranged in parallel with one another and equally spaced from one another so that signal currents flowing in adjacent parallel sides are shifted by 90.degree. in phase.
摘要翻译：助听器具具有感应回路，其磁耦合到由难听者单独保持的助听器。感应环的数量是两个的整数倍，每个感应环是具有至少两个平行边的矩形的形式。感应环的平行边彼此平行排列并且彼此间隔开，使相邻平行边流动的信号电流相位偏移90°。

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