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Volume 44, Issue 10
Displaying 1-6 of 6 articles from this issue
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Takeshi HAGIHARA1971 Volume 44 Issue 10 Pages 449-464
Published: October 30, 1971
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSA characteristic point of loochoo lacquer is that the adhesiveness is very powerful, because the blood of a pig is used in undercoating.
When it was experimented what influence the structures of 26 kinds of organic pigment had on. films of it;
1) Organic pigments of many kinds were found to be used for loochoo lacquer, because of their vivid colours, but benzidine and hansa yellows were not applicable.
2) Light resistance of a inorganic pigment TiO2 was very strong in paints, but in loochoo lacquer its light resistance (100 hours) was very weak.
Not only Ultraviolet rays in sunlight, but also oxygen, active hydrogen and infrared rays were found to have a great influence on light resistance.
When the ultraviolet rays was applied to films of loochoo lacquer, gloss of films vanished in hours, but films did not crack.
Following 3 types of ultraviolet rays adsorption agents were used.
1) phenyl salicylate
2) 5-chloro-2-hydroxybenzophenone
3) 2-hydroxy-4-methoxybenzophenone
And phenyl salicylate had aView full abstractDownload PDF (2332K) -
Kunio URUSHIDO, Chiaki TSUCHIYA, Nobumasa Hojo1971 Volume 44 Issue 10 Pages 465-469
Published: October 30, 1971
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSInfluence of the treatment with metallic ion on thermal degradation of phenolic resin containing chelate forming groups was investigated.
The results obtained are as follows :
1) For the metallic ion treated phenolic resin containing chelate forming groups, a) The rate of thermal decomposition is smaller than that of untreated resin.
b) Degradation of chelate forming groups of phenolic resin by heat is depressed.
c) The formation of non-volatile compounds during heating process is negligible.
2) The rate of weight loss with heating at constant temperature 200°and 300° and 400°C were studied.
Weight loss of the metallic ion treated resin at 200° and 300°C are fairly less than that of the untreated resin as long as 40 minutes.
3) Thermal stability of resin becomes higher with elevation of pH value of the treating solution. of metallic ion for resin.View full abstractDownload PDF (616K) -
Toshiko KENJO1971 Volume 44 Issue 10 Pages 470-474
Published: October 30, 1971
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (662K) -
Nobuhiko KUROKI1971 Volume 44 Issue 10 Pages 475-482
Published: October 30, 1971
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (894K) -
Isao TAKAGI1971 Volume 44 Issue 10 Pages 483-490
Published: October 30, 1971
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (901K) -
Sadaaki TAHARA1971 Volume 44 Issue 10 Pages 491-499
Published: October 30, 1971
Released on J-STAGE: November 20, 2012
JOURNAL FREE ACCESSDownload PDF (1116K)
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