ES326340A1 - A procedure for the manufacture of polymer glicol tertifthate. (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure for the manufacture of polymer glicol tertifthate. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES326340A1
ES326340A1 ES0326340A ES326340A ES326340A1 ES 326340 A1 ES326340 A1 ES 326340A1 ES 0326340 A ES0326340 A ES 0326340A ES 326340 A ES326340 A ES 326340A ES 326340 A1 ES326340 A1 ES 326340A1
Authority
ES
Spain
Prior art keywords
stage
condensate
translation
manufacture
machine
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
ES0326340A
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
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 Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of ES326340A1 publication Critical patent/ES326340A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes
    • C08G63/785—Preparation processes characterised by the apparatus used
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process for the manufacture of polymer glycol terephthalate by step esterification of terephthalic acid with ethylene glycol to obtain a previous condensate and subsequent polycondensation thereof, characterized in that the pre-condensate is produced in a two-stage closed loop process, in which first stage the terephthalic acid is esterified with a previous condensate, "alcoholic" containing hydroxyl groups, which results in the procedure itself, which is practically free of non-combined glycol, to obtain a prior "neutral" condensate, and in which In this step, the precondensate necessary for the first stage is prepared by "glycolysis" of a part of the reaction product of the first stage and the part not subjected to the "glycolysis" of the reaction product of the first stage is polycondensed in itself to obtain the desired degree of polycondensation. (Machine-translation by Google Translate, not legally binding)
ES0326340A 1965-07-17 1966-05-05 A procedure for the manufacture of polymer glicol tertifthate. (Machine-translation by Google Translate, not legally binding) Expired ES326340A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEM0066002 1965-07-17
DEM0067795 1965-12-24

Publications (1)

Publication Number Publication Date
ES326340A1 true ES326340A1 (en) 1967-07-01

Family

ID=25987733

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0326340A Expired ES326340A1 (en) 1965-07-17 1966-05-05 A procedure for the manufacture of polymer glicol tertifthate. (Machine-translation by Google Translate, not legally binding)

Country Status (9)

Country Link
AT (1) AT276771B (en)
BE (1) BE682906A (en)
CH (1) CH491976A (en)
DE (2) DE1570981A1 (en)
ES (1) ES326340A1 (en)
FR (1) FR1484494A (en)
GB (1) GB1136455A (en)
NL (2) NL6606878A (en)
SE (1) SE335916B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4694622A (en) * 1984-07-27 1987-09-22 Bouygues Concrete structural elements, process and device for manufacturing these elements

Also Published As

Publication number Publication date
BE682906A (en) 1966-12-01
DE1595023A1 (en) 1970-06-18
FR1484494A (en) 1967-06-09
DE1570981A1 (en) 1969-08-28
NL135070C (en)
CH491976A (en) 1970-06-15
NL6606878A (en) 1967-01-18
AT276771B (en) 1969-12-10
SE335916B (en) 1971-06-14
GB1136455A (en) 1968-12-11

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