Macromolecular compounds communication 61. Decarboxylation of dicarboxylic acids during polycondensation
Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polye...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1954 |
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| Umfang: |
6 |
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| Reproduktion: |
Springer Online Journal Archives 1860-2002 |
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| Übergeordnetes Werk: |
in: Russian chemical bulletin - 1952, 3(1954) vom: März, Seite 461-466 |
| Übergeordnetes Werk: |
volume:3 ; year:1954 ; month:03 ; pages:461-466 ; extent:6 |
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| 245 | 1 | 0 | |a Macromolecular compounds communication 61. Decarboxylation of dicarboxylic acids during polycondensation |
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| 520 | |a Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polyester is formed at ail in the case of oxalic and malonic acids, and in the case of succinic and adipic acids the molecular weight of the resulting polyester falls as the reaction temperature rims. 3. It has been found that in presence of glycols the decarboxylation temperatures of dicarboxylic acids are greatly lowered. 4. It has been established that the evolution of carbon dioxide results from the breakdown of the terminal carboxyl groups of the polyester molecule. 5. It has been shown that the breakdown of terminal carboxyl groups hinders the normal course of the polycondensation and leads to the formation of polyesters of lower molecular weight. | ||
| 533 | |f Springer Online Journal Archives 1860-2002 | ||
| 700 | 1 | |a Korshak, V. V. |4 oth | |
| 700 | 1 | |a Rogozhin, S. V. |4 oth | |
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(DE-627)NLEJ192122509 DE-627 ger DE-627 rakwb eng Macromolecular compounds communication 61. Decarboxylation of dicarboxylic acids during polycondensation 1954 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polyester is formed at ail in the case of oxalic and malonic acids, and in the case of succinic and adipic acids the molecular weight of the resulting polyester falls as the reaction temperature rims. 3. It has been found that in presence of glycols the decarboxylation temperatures of dicarboxylic acids are greatly lowered. 4. It has been established that the evolution of carbon dioxide results from the breakdown of the terminal carboxyl groups of the polyester molecule. 5. It has been shown that the breakdown of terminal carboxyl groups hinders the normal course of the polycondensation and leads to the formation of polyesters of lower molecular weight. Springer Online Journal Archives 1860-2002 Korshak, V. V. oth Rogozhin, S. V. oth in Russian chemical bulletin 1952 3(1954) vom: März, Seite 461-466 (DE-627)NLEJ188989994 (DE-600)2037677-7 1573-9171 nnns volume:3 year:1954 month:03 pages:461-466 extent:6 http://dx.doi.org/10.1007/BF01167826 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 3 1954 3 461-466 6 |
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(DE-627)NLEJ192122509 DE-627 ger DE-627 rakwb eng Macromolecular compounds communication 61. Decarboxylation of dicarboxylic acids during polycondensation 1954 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polyester is formed at ail in the case of oxalic and malonic acids, and in the case of succinic and adipic acids the molecular weight of the resulting polyester falls as the reaction temperature rims. 3. It has been found that in presence of glycols the decarboxylation temperatures of dicarboxylic acids are greatly lowered. 4. It has been established that the evolution of carbon dioxide results from the breakdown of the terminal carboxyl groups of the polyester molecule. 5. It has been shown that the breakdown of terminal carboxyl groups hinders the normal course of the polycondensation and leads to the formation of polyesters of lower molecular weight. Springer Online Journal Archives 1860-2002 Korshak, V. V. oth Rogozhin, S. V. oth in Russian chemical bulletin 1952 3(1954) vom: März, Seite 461-466 (DE-627)NLEJ188989994 (DE-600)2037677-7 1573-9171 nnns volume:3 year:1954 month:03 pages:461-466 extent:6 http://dx.doi.org/10.1007/BF01167826 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 3 1954 3 461-466 6 |
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(DE-627)NLEJ192122509 DE-627 ger DE-627 rakwb eng Macromolecular compounds communication 61. Decarboxylation of dicarboxylic acids during polycondensation 1954 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polyester is formed at ail in the case of oxalic and malonic acids, and in the case of succinic and adipic acids the molecular weight of the resulting polyester falls as the reaction temperature rims. 3. It has been found that in presence of glycols the decarboxylation temperatures of dicarboxylic acids are greatly lowered. 4. It has been established that the evolution of carbon dioxide results from the breakdown of the terminal carboxyl groups of the polyester molecule. 5. It has been shown that the breakdown of terminal carboxyl groups hinders the normal course of the polycondensation and leads to the formation of polyesters of lower molecular weight. Springer Online Journal Archives 1860-2002 Korshak, V. V. oth Rogozhin, S. V. oth in Russian chemical bulletin 1952 3(1954) vom: März, Seite 461-466 (DE-627)NLEJ188989994 (DE-600)2037677-7 1573-9171 nnns volume:3 year:1954 month:03 pages:461-466 extent:6 http://dx.doi.org/10.1007/BF01167826 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 3 1954 3 461-466 6 |
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(DE-627)NLEJ192122509 DE-627 ger DE-627 rakwb eng Macromolecular compounds communication 61. Decarboxylation of dicarboxylic acids during polycondensation 1954 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polyester is formed at ail in the case of oxalic and malonic acids, and in the case of succinic and adipic acids the molecular weight of the resulting polyester falls as the reaction temperature rims. 3. It has been found that in presence of glycols the decarboxylation temperatures of dicarboxylic acids are greatly lowered. 4. It has been established that the evolution of carbon dioxide results from the breakdown of the terminal carboxyl groups of the polyester molecule. 5. It has been shown that the breakdown of terminal carboxyl groups hinders the normal course of the polycondensation and leads to the formation of polyesters of lower molecular weight. Springer Online Journal Archives 1860-2002 Korshak, V. V. oth Rogozhin, S. V. oth in Russian chemical bulletin 1952 3(1954) vom: März, Seite 461-466 (DE-627)NLEJ188989994 (DE-600)2037677-7 1573-9171 nnns volume:3 year:1954 month:03 pages:461-466 extent:6 http://dx.doi.org/10.1007/BF01167826 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 3 1954 3 461-466 6 |
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(DE-627)NLEJ192122509 DE-627 ger DE-627 rakwb eng Macromolecular compounds communication 61. Decarboxylation of dicarboxylic acids during polycondensation 1954 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polyester is formed at ail in the case of oxalic and malonic acids, and in the case of succinic and adipic acids the molecular weight of the resulting polyester falls as the reaction temperature rims. 3. It has been found that in presence of glycols the decarboxylation temperatures of dicarboxylic acids are greatly lowered. 4. It has been established that the evolution of carbon dioxide results from the breakdown of the terminal carboxyl groups of the polyester molecule. 5. It has been shown that the breakdown of terminal carboxyl groups hinders the normal course of the polycondensation and leads to the formation of polyesters of lower molecular weight. Springer Online Journal Archives 1860-2002 Korshak, V. V. oth Rogozhin, S. V. oth in Russian chemical bulletin 1952 3(1954) vom: März, Seite 461-466 (DE-627)NLEJ188989994 (DE-600)2037677-7 1573-9171 nnns volume:3 year:1954 month:03 pages:461-466 extent:6 http://dx.doi.org/10.1007/BF01167826 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 3 1954 3 461-466 6 |
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macromolecular compounds communication 61. decarboxylation of dicarboxylic acids during polycondensation |
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Macromolecular compounds communication 61. Decarboxylation of dicarboxylic acids during polycondensation |
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Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polyester is formed at ail in the case of oxalic and malonic acids, and in the case of succinic and adipic acids the molecular weight of the resulting polyester falls as the reaction temperature rims. 3. It has been found that in presence of glycols the decarboxylation temperatures of dicarboxylic acids are greatly lowered. 4. It has been established that the evolution of carbon dioxide results from the breakdown of the terminal carboxyl groups of the polyester molecule. 5. It has been shown that the breakdown of terminal carboxyl groups hinders the normal course of the polycondensation and leads to the formation of polyesters of lower molecular weight. |
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Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polyester is formed at ail in the case of oxalic and malonic acids, and in the case of succinic and adipic acids the molecular weight of the resulting polyester falls as the reaction temperature rims. 3. It has been found that in presence of glycols the decarboxylation temperatures of dicarboxylic acids are greatly lowered. 4. It has been established that the evolution of carbon dioxide results from the breakdown of the terminal carboxyl groups of the polyester molecule. 5. It has been shown that the breakdown of terminal carboxyl groups hinders the normal course of the polycondensation and leads to the formation of polyesters of lower molecular weight. |
| abstract_unstemmed |
Summary 1. A study has been made of the effect of temperature on the polycondensation of ethylene glycol with oxalic, malonic, succinic, adipic, and sebacic acids. 2. It has been found that in presence of ethylene glycol the process of decarboxylation is greatly accelerated, and as a result no polyester is formed at ail in the case of oxalic and malonic acids, and in the case of succinic and adipic acids the molecular weight of the resulting polyester falls as the reaction temperature rims. 3. It has been found that in presence of glycols the decarboxylation temperatures of dicarboxylic acids are greatly lowered. 4. It has been established that the evolution of carbon dioxide results from the breakdown of the terminal carboxyl groups of the polyester molecule. 5. It has been shown that the breakdown of terminal carboxyl groups hinders the normal course of the polycondensation and leads to the formation of polyesters of lower molecular weight. |
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