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Volume 16, Issue 11
Displaying 1-11 of 11 articles from this issue
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Michio YOSHIDA1958Volume 16Issue 11 Pages 571-584
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
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Shiro AKABORI, Kenji OKAWA1958Volume 16Issue 11 Pages 585-595
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
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Kazuo HATA, Shin-ichi TAIRA1958Volume 16Issue 11 Pages 596-602
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
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Derivatives from Naphthophenazine, Naphthosultum=phenazine and BrasanquinoneAkira INOUE, Nobuhiko KUROKI, Kenzo KONISHI1958Volume 16Issue 11 Pages 603-606
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
JOURNAL FREE ACCESSSyntheses of nine kinds of yellow vat colors, (4), (5), (6)(C. I. Vat Yellow 27), (7a) or (7b), and (9)-(13), respectively, were made from condensation hydroxynaphthophenazine derived from 2-hydroxy-1, 4-naphthoquinone, sultazines and Naphthol-AS with 2, 3-dichloronaphthoquinone. Dyeing property and stability towards the light of these products have been investigated. The photosensitzed tendering was less in naphthosultumphenazine derivatives containing no furan ring and was more prominent in brasanquinone derivatives con taining furan ring. 6-Hydroxynaphthoquinone (2) can be used as a bottoming agent but the dyeing was rather light and its substantivity was 3/4 of Naphthol-AS.View full abstractDownload PDF (3205K) -
Derivatives from Naphthoquinon-monoimineAkira INOUE, Nobuhiko KUROKI, Kenzo KONISHI1958Volume 16Issue 11 Pages 607-609
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
JOURNAL FREE ACCESS5-Nitro-2, 3-dichloro-1, 4-naphthoquinone (1a) and its derivatives (2a)-(7a) were synthesized. These were reduced with S2O3 in conc. H2SO4 to give 2, 3-dichloro-1, 4-dihydroxy-5, 8-naphthoquinone-8-imine (1b) and its derivatives (2b)-(7b), their maximum light absorbancy and dyeing ability of acetate, Vinylon, Amylan and Terylen have been investigated. Of these compounds tested, (1b) and (4b) showed excellent and clear dyeing than others. Among the textiles tested for dyeing, Amylan was the best with some dullness while Vinylon was slightly inferior than others. Terylen showed the same dyeing efficiency as that of acetate by dyeing at 100°C without carrier. Fastness of dyes was superior in Therylen and inferior in other fibers.View full abstractDownload PDF (2329K) -
2-Amino-3-methoxyfluorene and Some New 2, 3-Disubstituted FluorenesNobuo ISHIKAWA, Mitsuo OKAZAKI1958Volume 16Issue 11 Pages 610-614
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
JOURNAL FREE ACCESSNitration of 3-methoxyfluorene yielded 2-nitro-3-methoxyfluorene (mp 183-4°C) as a main product. This was used for syntheses of 2-amino-3-methoxyfluorene (mp 161-2°C) and 2-acetamino-3-methoxyfluorene (mp 167-8°C). In order to confirm the structures of the above products, 2-chloro-3-methoxyfluorenone (mp 248-9°C) was synthesized through the route of 2-amino-3-nitrofluorenone, 2-chloro-3-nitrofluorenone (mp 224-5°C), 2-chloro-3-aminofluorenone (mp 212-3°C), and 2-chloro-3-hydroxyfluorenone (mp 238-9°C). It was confirmed that this was identical with the product prepared through the routeof 2-amino-3-methoxyfluorene and 2-chloro-3-methoxyfluorene (mp 136-7°C). Also, absorptionspectra of new 2, 3-disubstituted fluorenes and fluorenones, including 2-chloro-3-hydroxyfluorene (mp 122-3°C) and 2-chloro-3-acetamidofluorenone (mp 222-3°C), were estimated.View full abstractDownload PDF (3910K) -
Catalytic Reductive Aminolysis of AminoalcoholsTadashi SASAKI1958Volume 16Issue 11 Pages 614-620
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
JOURNAL FREE ACCESSReductive aminolysis of ethanolamine, isopropanolamine, and 2-methyl-2-aminopropanol in the presence or absence of ammonia was investigated. Good yield of corresponding piperazine derivatives was obtained in the presence of ammonia. The yield of products was different depending on the kinds of amino alcohols used and it was in order of 2-methyl-2-amino-propanol>isopropanolamine>ethanolamine. The main product of reaction in the absence of ammonia seemed to be diamino alcohol, although the experimental results indicated that the formation of N, N'-diethylpiperazine from ethanolamine, and triisopropylenediamine from isopropanolamine was confirmed. The main product was also piperazine derivatives from 2-amino-2-methyl-propanol. This was attributed to an obstruction of diamino alcohol formation from its structure. Similar experi ment was carried out on propylenediamine to recover only unreacted raw material.View full abstractDownload PDF (5360K) -
Reductive Aminolysis of Simple N-MethylaminolccholsTadashi SASAKI1958Volume 16Issue 11 Pages 620-624
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
JOURNAL FREE ACCESSReductive aminolysis of N-methylethanolamine and N-methylisopropanolamine as a N-methylaminoalcohol was carried out in methanol or water as a solvent in the presence or absence of methylamine. N-Methylethanolamine yielded piperazine derivatives regardless of the presence or absence of methylamine. At the same time, methylamination of alcoholic group yielded also ethylenedi-amine derivatives and the yield was increased by the addition of methylamine. However, a certain extent of hydrogenation was taken place in either case and yielded a lower boiling product from reductive decomposition of the raw material. N-Methylisopropanolamine was difficult to be decomposed into its lower boiling compound but its conversion into piperazine derivative was better by the addition of methylamine. In the reductive aminolysis in aqueous solution with the addition of methylamine, there was a tendency of formation of N, N'-dimethylpropylenediamine by a simple methylamination of the hydroxyl group.View full abstractDownload PDF (3801K) -
Yoshitaka KOBAYASHI1958Volume 16Issue 11 Pages 625-629
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
JOURNAL FREE ACCESSAcetaldehyde in vinyl chloride vapor was determined rapidly by means of detector tubes. 100 cc of vinyl chloride vapor was sent with constant speed 1 cc/sec into a detector tube which contained hydroxylamine hydrochloride and thymol blue on silica gel as detecting reagent. When acetaldehyde was involved in vinyl chloride, a red zone was formed in the yellow reagent layer of the detector tube from its gas-inlet end.
Acetaldehyde was determined by measuring the length of this discolored zone. The detectable concentrations of acetaldehyde in vinyl chloride was 0.003-2.0 vol %. One measurement of the concentration of acetaldehyde with this detector requires only 5 min. or less. The relative err is with in±10%.View full abstractDownload PDF (3842K) -
Johji SHIMOZATO, Hidetoshi YASUNAGA1958Volume 16Issue 11 Pages 630-636
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
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Hideo YAGUCHI1958Volume 16Issue 11 Pages 636-639
Published: November 01, 1958
Released on J-STAGE: October 20, 2010
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