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The Amine Degradation of Network Polyurethanes
http://hdl.handle.net/10069/23871
http://hdl.handle.net/10069/23871a1316eb9-1d28-4efa-8414-58ecdd658891
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
kogaku00_08_09.pdf (605.5 kB)
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| アイテムタイプ | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
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| 公開日 | 2010-09-09 | |||||||||||
| タイトル | ||||||||||||
| タイトル | The Amine Degradation of Network Polyurethanes | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||||
| 著者 |
Furukawa, Mutsuhisa
× Furukawa, Mutsuhisa
× Kawashita, Eizi
× Yokoyama, Tetsuo
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Amine degradation was studied for the network polyurethanes (PPG-TDI-BD) and model compounds of allophanate, urethane, and urea linkages (1,3-diphenyl methylallophanate, 4-methyl-m-phenylenedicarbamate, and 1,3-diphenylurea) in DMSO at a low temperature below 70℃. Among the model compounds, only the allophanate reacted with an equimolar amount of aliphatic primary amine to give urea and urethane. However, the other compounds did not react. It was found that the concentration of allophanate groups is determined by using H2S04-MeOH solution and bromphenol blue. By this method crosslinking densities of the network polyurethanes were determined and compared with those estimated from stoichiometric calculation and from rubber elasticity. The crosslinking densities determined by the amine degradation of po!yurethanes cured under air atmosphere were 22～48% of those estimated stoichiometrically. In contrast, both values of polyurethane cured under nitrogen atmosphere were in good agreement. | |||||||||||
| 書誌情報 |
長崎大学工学部研究報告 en : Reports of the Faculty of Engineering, Nagasaki University 号 8, p. 67-76, 発行日 1977-01 |
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| ISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 02860902 | |||||||||||
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| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 18805574 | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AN00178418 | |||||||||||
| 著者版フラグ | ||||||||||||
| 出版タイプ | VoR | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | 長崎大学工学部 | |||||||||||
| 出版社別言語 | ||||||||||||
| 値 | Faculty of Engineering, Nagasaki University | |||||||||||
| 引用 | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | 長崎大学工学部研究報告, (8), pp.67-76; 1977 | |||||||||||
