PL405449A1 - Method for producing polyurethane elastomers - Google Patents
Method for producing polyurethane elastomersInfo
- Publication number
- PL405449A1 PL405449A1 PL405449A PL40544913A PL405449A1 PL 405449 A1 PL405449 A1 PL 405449A1 PL 405449 A PL405449 A PL 405449A PL 40544913 A PL40544913 A PL 40544913A PL 405449 A1 PL405449 A1 PL 405449A1
- Authority
- PL
- Poland
- Prior art keywords
- carbonate
- polyurethane elastomers
- producing polyurethane
- oligo
- subjected
- Prior art date
Links
Landscapes
- Polyurethanes Or Polyureas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Sposób wytwarzania elastomerów poliuretanowych charakteryzuje się tym, że bis(metylowęglan)alkilenu i/albo bis(etylowęglan)alkilenu i/albo oligo(węglan alkilenu) poddaje się reakcji polikondensacji z co najmniej jednym estrem kwasu tereftalowego lub izoftalowego oraz z co najmniej jednym ,?,?-diolem użytym w 1,5-4-krotnym nadmiarze w stosunku do pozostałych składników, w obecności katalizatora estryfikacji, przy czym reakcję polikondensacji prowadzi się najpierw w przepływie gazu obojętnego, pod normalnym ciśnieniem, w temperaturze 150-180°C, a następnie pod zmniejszonym ciśnieniem, po czym otrzymany diol oligo(estro-węglanowy) poddaje się reakcji z diizocyjanianem, w temperaturze 75-85°C, w atmosferze gazu obojętnego, a następnie poddaje się procesowi przedłużaniu łańcucha przy użyciu pary wodnej.The method for producing polyurethane elastomers is characterized in that the alkylene bis (methyl carbonate) and / or alkylene bis (ethyl carbonate) and / or oligo (alkylene carbonate) is subjected to a polycondensation reaction with at least one terephthalic or isophthalic acid ester and with at least one, ,? - diol used in a 1.5-4-fold excess in relation to the other components in the presence of an esterification catalyst, the polycondensation reaction being carried out first in an inert gas flow, under normal pressure, at a temperature of 150-180 ° C, and then under reduced pressure, after which the oligo (ester carbonate) diol obtained is reacted with diisocyanate at a temperature of 75-85 ° C under an inert gas atmosphere and then subjected to a chain extension process using steam.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL405449A PL229414B1 (en) | 2013-09-26 | 2013-09-26 | Method for producing polyurethane elastomers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL405449A PL229414B1 (en) | 2013-09-26 | 2013-09-26 | Method for producing polyurethane elastomers |
Publications (2)
Publication Number | Publication Date |
---|---|
PL405449A1 true PL405449A1 (en) | 2015-03-30 |
PL229414B1 PL229414B1 (en) | 2018-07-31 |
Family
ID=52727680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL405449A PL229414B1 (en) | 2013-09-26 | 2013-09-26 | Method for producing polyurethane elastomers |
Country Status (1)
Country | Link |
---|---|
PL (1) | PL229414B1 (en) |
-
2013
- 2013-09-26 PL PL405449A patent/PL229414B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL229414B1 (en) | 2018-07-31 |
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