書誌事項
- タイトル別名
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- Studies on the synthesis of poly(1,4-butyleneterephthalate) by the direct polycon densation and its properties. (Part 3) Polycondensation of poly(1,4-butyleneterephthalate) prepolymer.
説明
Polycondensation reaction conditions of poly (1, 4-butyleneterephthalate) (PBT) prepolymer obtained by direct esterification of terephthalic acid (TA) with butanediol-1, 4 were investigated. It was found that<br>1) the amount of tetrahydrofurane formed as a by-product decreases with lowering the conversion of TA at the esterification stage, while the ultimate molecular weight of PBT obtained decreases with lowering the conversion.<br>2) the optimum reaction temperature is lower than that in the synthesis of other poly (alkylene terephthalates).<br>3) the catalyst is favorably added at stages of both initial esterification and subsequent polycondensation, although its total concentration does not affect an ultimate molecular weight of the resulting PBT.<br>To obtain the Mark-Houwink-Sakurada viscosity equation of PBT in o-chlorophenol at 25°C, the samples having the molecular weight in the range from 8, 400 to 67, 000 were prepared and the following viscosity equation was obtained:
収録刊行物
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- 繊維学会誌
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繊維学会誌 43 (5), 251-256, 1987
社団法人 繊維学会
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詳細情報 詳細情報について
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- CRID
- 1390001204828501888
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- NII論文ID
- 130004204370
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- ISSN
- 18842259
- 00379875
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可