巻号一覧
25 巻, 2 号
選択された号の論文の10件中1～10を表示しています
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小方 芳郎1967 年 25 巻 2 号 p. 101-115
発行日: 1967/02/01
公開日: 2010/06/28
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長谷川 賢1967 年 25 巻 2 号 p. 116-126
発行日: 1967/02/01
公開日: 2011/03/01
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gem-ジメチルアルキレンジアミンの合成とそのポリ尿素山本 耕介, 木村 午朗1967 年 25 巻 2 号 p. 127-136
発行日: 1967/02/01
公開日: 2010/06/28
ジャーナル フリーgem-Dimethylalkylenediamines, H2N(CH2)m-CH3-C-CH3-(CH2)nNH2 (m, n: 1-5), were synthesized and treated with urea to obtain polyureas of symmetric side chain structures. Upon treatment with hydrogen chloride, isoprene and methallyl chloride were converted into the corresponding dichlorides. Since one of the chlorine atoms of the dichloride is tertiary, one or two ethylene molecules can be introduced between the carbon and chlorine atoms, giving gem-dimethyalkylenedichloride. With subsequent cyanation followed by hydrogenation, desired gem-dimethylalkylenediamines were obtained. All the polyureas so obtained were transparent and could be spun into fibers. Their melting points and specific gravities were considerably low as compared with that of linear alkylenediamine polyureas, as follows:抄録全体を表示PDF形式でダウンロード (1263K) -
硫酸力ルシウ厶触媒によるアセタールの接触分解について北畠 道俊, 尾張 栄彦, 久野 耕一1967 年 25 巻 2 号 p. 137-143
発行日: 1967/02/01
公開日: 2010/06/28
ジャーナル フリーCatalytic dealcoholation of acetaldehyde diethylacetal over calcium sulfate catalyst has been studied in a flow system. Data for the conversion of acetal versus W/F curves were obtained at three temperatures, 174, 188, and 200°C. It seems reasonable to assume that the reaction is reversible. Equilibrium constants, Kp, were determined and the following equation derived. log Kp=-3.84×103/T+8.243 A rate equation was established and the apparent activation energy was calculated to be 21 Kcal/mol. Effects of ethyl vinyl ether, ethanol, and water added to the acetal were also examined.抄録全体を表示PDF形式でダウンロード (678K) -
橋本 一郎, 田代 実1967 年 25 巻 2 号 p. 144-149
発行日: 1967/02/01
公開日: 2010/06/28
ジャーナル フリーXylylene diamines were smoothly and selectively hydrogenated into the corresponding bis(aminomethyl)cyclohexanes in the presence of newly modified ruthenium catalysts. They were prepared by heating sodium ruthenate supported on active carbon under carbon dioxide atmosphere. Commercial ruthenium catalysts were not active enough to complete the hydrogenation in contrast with their full activity for aniline. The hydrogenation reaction of m-xylylenediamine is zero order in diamine concentration and first order in hydrogen pressure. Small quantities of m-methylbenzylamine, 1-aminomethyl-3-methylcyclohexane, and m-xylene were formed as byproducts presumably from the starting diamine through hydrogenolysis. Apparent activation energy for the formaton of 1, 3-bis(aminomethyl)cyclohexane was found to be 8.6 Kcal/mol. Though m-xylylenediamine gave predominantly cis-bis(aminomethyl)cyclohexane, almost 1 to 1 mixture of cis-and trans-isomers was obtained from p-xylylenediamine.抄録全体を表示PDF形式でダウンロード (775K) -
同前 保彦, 藤島 静1967 年 25 巻 2 号 p. 150-154
発行日: 1967/02/01
公開日: 2010/06/28
ジャーナル フリーPotassium permanganate oxidation of alkyl benzoic acids and pseudocumene has been carried out in an aqueous alkaline solution. 2, 4-and 2, 5-Dimethylbenzoic acids gave 2-methylterephthalic acid and 4-methylisophthalic acid, respectively, as an intermediate in the preparation of trimellitic acid. In the oxidation of 3, 4- dimethylbenzoic acid and competitive oxidation of isomeric toluic acids, the relative reactivity of the methyl groups has been established, as follows : para>reta>ortho. By partial oxidation of mesitoic acid, 2, 6-dimethylterephthalic acid was obtained as main product. In the case of pseudocumene, 2, 4-and 3, 4-dimethylbenzoic, 2-metylterephthalic, and 4-methylisophthalic acids were produced as intermediate products. Their formations were explained by the difference in relative reactivities of the methyl groups.抄録全体を表示PDF形式でダウンロード (688K) -
安息香酸力リウムの炭酸力リウ厶およびシアン酸力リウ厶存在における熱変換反応同前 保彦, 藤島 静1967 年 25 巻 2 号 p. 155-160
発行日: 1967/02/01
公開日: 2010/06/28
ジャーナル フリーReactions of potassium benzoate in the presence of potassium carbonate and cyanate have been studied under various conditions. The acids formed were analyzed by vapor phase chromatography after esterification with diazomethane. Maximum yield of terephthalic acid (ca. 60%) was obtained at 380-405°C in 3 hrs and longer heating failed to improve the yield. Effects of the pressure of carbon dioxide and of the molar ratio of potassium carbonate to potassium benzoate were evident. The anion moieties of cadmium compounds did not affect the composition of the products, and the yield of terephthalic acid and the conversion of potassium benzoate were rather reduced in the presence of a large amount of potassium cyanate. In an initial stage of this reaction, considerable amounts of phthalic, isophthalic, and benzene tricarboxylic acids were formed together with terephthalic acid. The direct carboxylation of potassium benzoate with potassium carbonate in potassium cyanate was indicated from the fact that the yield of terephthalic acid was higher than that expected from the disproportionation reaction. On the other hand, in the reaction of sodium benzoate in the presence of sodium cyanate and sodium carbonate, the effect of sodium cyanate could not be demonstrated.In an initial stage of this reaction, sodium benzoate gave only sodium phthalate.抄録全体を表示PDF形式でダウンロード (898K) -
N-(2-オキシ-3(または4,5)-メチルベンゾイル)メラミン類の合成およびその染料への応用北島 英彦, 大島 好文, 黒川 良成, 山田 豊志1967 年 25 巻 2 号 p. 161-166
発行日: 1967/02/01
公開日: 2011/03/01
ジャーナル フリーAcetyl-o (or m, p)-cresotic anhydrides were synthesized in good yield from the corresponding acetylcresotic acids and thionyl chloride in the presence of pyridine. Mixtures of melamine and acetylcresotic anhydrides dissolved in dioxane were heated to reflux to obtain N-(2-acetoxy-x-methylbenzoyl)melamines (x: 3, (1) ; 4, (4); 5, (7)). The corresponding N, N'-diacylmelamines were formed as by-products as identified in the forms of hydroxy derivatives (x: 3, (3); 4, (6) ; 5, (9)). Upon hydrolysis with 10% aqueous pyridine, (1), (4), and (7) gave the corresponding hydroxy derivatives ((2), (5), and (8)). Acetylcresotic anhydrides and the melamine derivatives ((1)-(9)) are new compounds not found in the literatures. Azo dyes were synthesized using (2), (3), (5), and (8) as coupling components, and the dyeingabilities of their methylol compounds for cotton and rayon investigated.抄録全体を表示PDF形式でダウンロード (884K) -
木村 午朗1967 年 25 巻 2 号 p. 167-179
発行日: 1967/02/01
公開日: 2011/07/05
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鈴木 慶一1967 年 25 巻 2 号 p. 180-183
発行日: 1967/02/01
公開日: 2010/06/28
ジャーナル フリーPDF形式でダウンロード (596K)
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