ES373915A1 - Continuous procedure and apparatus for the obtaining of low molecular weight polyesters. (Machine-translation by Google Translate, not legally binding) - Google Patents
Continuous procedure and apparatus for the obtaining of low molecular weight polyesters. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES373915A1 ES373915A1 ES373915A ES373915A ES373915A1 ES 373915 A1 ES373915 A1 ES 373915A1 ES 373915 A ES373915 A ES 373915A ES 373915 A ES373915 A ES 373915A ES 373915 A1 ES373915 A1 ES 373915A1
- Authority
- ES
- Spain
- Prior art keywords
- translation
- mass
- molecular weight
- machine
- low molecular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
Continuous process for obtaining low molecular weight polyesters, from a liquid mass consisting essentially of bis- β -hydroxyethyl terephthalate and/or its oligomers, which leads to homogeneous products, and which present a very low degree of compounds with ether function, characterized in that the mass is passed through, in a succession of superimposed zones, maintained at the same pressure lower than 15 torrs, and at a temperature higher than 260º c, and in each of which the mass circulates in the form of one or more streams which are alternately placed in contact with a heated wall and the atmosphere under reduced pressure, the mass passing from one area to the other by gravity in the form of a film, the gaseous products released from the bottom up traveling without loss of load. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES373915A ES373915A1 (en) | 1969-11-26 | 1969-11-26 | Continuous procedure and apparatus for the obtaining of low molecular weight polyesters. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES373915A ES373915A1 (en) | 1969-11-26 | 1969-11-26 | Continuous procedure and apparatus for the obtaining of low molecular weight polyesters. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
Publication Number | Publication Date |
---|---|
ES373915A1 true ES373915A1 (en) | 1972-02-16 |
Family
ID=8454402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES373915A Expired ES373915A1 (en) | 1969-11-26 | 1969-11-26 | Continuous procedure and apparatus for the obtaining of low molecular weight polyesters. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES373915A1 (en) |
-
1969
- 1969-11-26 ES ES373915A patent/ES373915A1/en not_active Expired
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