Kinetic Studies of Polyesterification Reaction between 2, 2-Dimethyl-1, 3-Propanediol and Dibasic Acids
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- Huang Ching Yun
- Osaka Research Laboratory, Japan Gas Chemicals Co., Inc.
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- Simono Yasuo
- Osaka Research Laboratory, Japan Gas Chemicals Co., Inc.
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- Onizuka Tomotaka
- Osaka Research Laboratory, Japan Gas Chemicals Co., Inc.
Bibliographic Information
- Other Title
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- 2, 2-ジメチル-1, 3-プロパンジオールと二塩基酸のポリエステル化反応の動力学に関する研究
Abstract
The following kinetic equation is obtained for the polyesterification of 2, 2-dimethyl-1, 3-propanediol with various dibasic acids at different temperatures in the absence of a foreign acid and solvent.<BR>These reactions were found to be subject to general acid catalysis in the absence of a foreign acid and solvent, where a catalyst is the dibasic acid itself.<BR>All of data obtained in this paper support the setting of the above equation over the range of 0 to 95% polyesterification for the case of [OH] 0/[COOH] 0=1.05, where [OH] 0 is the initial concentration of the hydroxyl group, [COOH] 0 is the initial concentration of the carboxyl group, and k′=4.8×10-2.<BR>The order of reactivities of dibasic acids with 2, 2-dimethyl-1, 3-propanediol are as follows.<BR>Maleic anhydride>succinic acid>adipic acid=sebacic acid>o-phthalic acid.<BR>The activation energies are all found to be 15±0.5kcal/mol, therefore the polyesterification reactions between 2, 2-dimethyl-1, 3-propanediol and various dibasic acids are same reaction mechanism.
Journal
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- Kobunshi Kagaku
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Kobunshi Kagaku 23 (254), 408-414, 1966
The Society of Polymer Science, Japan
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Details 詳細情報について
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- CRID
- 1390001206520308864
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- NII Article ID
- 130004032628
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- ISSN
- 18848079
- 00232556
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed