巻号一覧
13 巻, 4 号
選択された号の論文の3件中1～3を表示しています
- |<
- <
- 1
- >
- >|
-
渡辺 治道1970 年 13 巻 4 号 p. 268-272
発行日: 1970/04/25
公開日: 2009/01/30
ジャーナル フリーAn iron powder-bed procedure used by Clayfield has been developed to investigate the dispersing performance of engine oil dispersants. The main purpose of this investigation was to find out the relationship between chemical structure and the dispersing ability of dispersants.
From the results, it appeared that the dispersant additives could be divided into the following three groups:
(1) Those having free amino or imino groups in the polar side chain show an excellent dispersing performance. Such compounds are derived from polyamine compounds and polybutenylsuccinic anhydride, polybutenyl (thio) phosphoric acid, naphthenic acid or isostearic acid.
(2) Those having free hydroxy groups in the polar side chain show a fairly good dispersing performance. Such compounds are derived from polyhydroxy compounds and polybutenylsuccinic acid or naphthenic acid.
(3) Those having acid anhydride group or alkaline earth metal salt group in the polar side chain show a medium dispersing performance.
It was concluded that the excellent dispersing performance of polybutenylsuccinimides depends on their basic amino groups rather than their high molecular weight oleophillic groups.抄録全体を表示PDF形式でダウンロード (417K) -
春日 芳徳, 天笠 正孝, 斎藤 善郎, 遠藤 汎1970 年 13 巻 4 号 p. 273-277
発行日: 1970/04/25
公開日: 2009/01/30
ジャーナル フリーThermal cracking of 1-chlorocyclohexene and 1-cyanocyclohexene was investigated by flow reactor, using the reaction temperature ranging from 580 to 660°C and contact time from 1.5 to 8 seconds. Reactant pressure was regulated at 30mmHg. Benzene or toluene was used as a diluent and helium as a carrier gas. The results were as follows:
(1) 1-Chlorocyclohexene gave ethylene as the main gas-product. Small quantities of hydrogen were noticed. However, no gas-products having more than three carbon numbers could be detected even when the conversion increased. Main liquid-products were 2-chloro-1, 3-butadiene and benzene.
(2) 1-Cyanocyclohexene gave ethylene as the main gas-product. Hydrogen and/or methane were also present in slight amounts. However, no gas-products having more than three carbon numbers could be detected. 2-Cyano-1, 3-butadiene and its polymer (estimated) were obtained as the main liquid-products.抄録全体を表示PDF形式でダウンロード (362K) -
亜鉛存在下の反応宇佐美 盛爾1970 年 13 巻 4 号 p. 278-281
発行日: 1970/04/25
公開日: 2009/01/30
ジャーナル フリーCobalt-carbonylation reaction in the presence of zinc compound was investigated by using noble catalysts. It has been observed that zinc compound has a retarding effect on cobalt carbonylation reaction, metal however, that the noble metal catalysts reduce the retarding effect. The major component of the product obtained from the carbonylation reaction is considered to be zinc cobalt carbonyl complex, Zn[Co(CO)4]2, which is formed by the reaction, Co2(CO)8→←HCo(CO)4→←Zn[Co(CO)4]2. The complex showed autocatalytic activity for cobalt carbonylation reaction. It was found that the complex was a more effective catalyst than other zinc compounds in aldol condensation reaction, and also found that the complex catalytically promoted the selective hydrogenation of double bond of the resultant product in aldol condensation reaction.抄録全体を表示PDF形式でダウンロード (339K)
- |<
- <
- 1
- >
- >|