ES451775A3 - Procedure for the direct sterification of tereftal acid. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the direct sterification of tereftal acid. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES451775A3 ES451775A3 ES451775A ES451775A ES451775A3 ES 451775 A3 ES451775 A3 ES 451775A3 ES 451775 A ES451775 A ES 451775A ES 451775 A ES451775 A ES 451775A ES 451775 A3 ES451775 A3 ES 451775A3
- Authority
- ES
- Spain
- Prior art keywords
- acid
- translation
- machine
- terephthalate
- legally binding
- 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
- Polyesters Or Polycarbonates (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Process for the direct esterification of pure terephthalic acid for the discontinuous production of polyethylene terephthalate, characterized in that in a first phase the terephthalic acid is reacted with the monoethylene glycol to obtain glyph acid acid terephthalate and diglycol terephthalate, carrying out the polymerization in a second phase by polycondensation of glycol acid terephthalate and diglycol terephthalate, using monoethylene glycol and terephthalic acid at low molar ratios, comprised between 1.0/1.0 7 1.4/1.0 7 carrying out the reaction at a temperature between 230ºC and 270º c. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES451775A ES451775A3 (en) | 1976-09-14 | 1976-09-14 | Procedure for the direct sterification of tereftal acid. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES451775A ES451775A3 (en) | 1976-09-14 | 1976-09-14 | Procedure for the direct sterification of tereftal acid. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
Publication Number | Publication Date |
---|---|
ES451775A3 true ES451775A3 (en) | 1977-08-16 |
Family
ID=8472307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES451775A Expired ES451775A3 (en) | 1976-09-14 | 1976-09-14 | Procedure for the direct sterification of tereftal acid. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES451775A3 (en) |
-
1976
- 1976-09-14 ES ES451775A patent/ES451775A3/en not_active Expired
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