Ring Opening Polymerization of Oxetane by Use of Silicate Gel of Rare Earth Metal
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- Moriya Osamu
- Department of Applied Chemistry, National Defense Academy
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- Yamamoto Shin-ichi
- Department of Applied Chemistry, National Defense Academy
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- Sugizaki Toshio
- Research Laboratory, Lintec Co.
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- Maeda Jun
- Research Laboratory, Lintec Co.
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- Kamejima Atsuko
- Research Laboratory, Lintec Co.
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- Kumon Takeo
- Department of Industrial Chemistry, Kanto Gakuin University
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- Kageyama Toshifumi
- Department of Industrial Chemistry, Kanto Gakuin University
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説明
The gels of the rare earth metal silicate such as yttrium, neodymium, or samarium were found to be the effective solid catalysts for the ring opening polymerization of oxetane. The silicate gels were prepared by the co-gelation of sodium metasilicate and the rare metal chloride from an acidic aqueous solution through the neutralization by an aqueous ammonia, the surface areas of which were in the range from 142 to 213 m2 g−1. The ring opening polymerization of oxetane proceeded readily at 20 °C in the presence of a catalytic amount of the silicate gels, in which the content of the rare earth metal was 10 mol % to oxetane. The silicate gel of yttrium, which enabled the quantitative formation of the corresponding polymer, was the most effective solid acid among those of the rare earth metals employed in this work.
収録刊行物
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- Polymer Journal
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Polymer Journal 37 (4), 262-269, 2005
The Society of Polymer Science, Japan
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詳細情報 詳細情報について
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- CRID
- 1390001206289755520
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- NII論文ID
- 10015532933
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- NII書誌ID
- AA00777013
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- ISSN
- 13490540
- 00323896
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- NDL書誌ID
- 7299036
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可