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
Application number
ES451775A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to ES451775A priority Critical patent/ES451775A3/en
Publication of ES451775A3 publication Critical patent/ES451775A3/en
Expired legal-status Critical Current

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  • 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)
ES451775A 1976-09-14 1976-09-14 Procedure for the direct sterification of tereftal acid. (Machine-translation by Google Translate, not legally binding) Expired ES451775A3 (en)

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)

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