GB939116A - Preparation of glycol esters of terephthalic acid - Google Patents

Preparation of glycol esters of terephthalic acid

Info

Publication number
GB939116A
GB939116A GB1185062A GB1185062A GB939116A GB 939116 A GB939116 A GB 939116A GB 1185062 A GB1185062 A GB 1185062A GB 1185062 A GB1185062 A GB 1185062A GB 939116 A GB939116 A GB 939116A
Authority
GB
United Kingdom
Prior art keywords
terephthalic acid
water
ethylene glycol
reaction
esters
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
GB1185062A
Inventor
Frederick James Sebelist
Robert Howard Weir
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to GB1185062A priority Critical patent/GB939116A/en
Publication of GB939116A publication Critical patent/GB939116A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
    • C07C69/80—Phthalic acid esters
    • C07C69/82—Terephthalic acid esters
    • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The glycol esters of terephthalic acid, namely bis(b -hydroxyethyl)terephthalate and mono(b -hydroxyethyl)terephthalate, are prepared essentially free of impurities containing ether linkages by the direct esterification of terephthalic acid with ethylene glycol under pressure at elevated temperatures, in the presence of a critical quantity of water (a molar ratio of water to ethylene glycol varying from 0.2-0.6). The pressure used is sufficient to maintain the aqueous glycol solution in the liquid phase (e.g. 250-1000 p.s.i.g.). The preferred ethylene glycol/terephthalic acid molar ratio used is in the range of 8/1 to 12/1 . Excess water formed during the reaction may be removed to increase the conversion of the reactants to the esters or to shorten the reaction time. Four examples are given, illustrating the effect of water on the formation of ether by-products in the reaction.
GB1185062A 1962-03-28 1962-03-28 Preparation of glycol esters of terephthalic acid Expired GB939116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1185062A GB939116A (en) 1962-03-28 1962-03-28 Preparation of glycol esters of terephthalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1185062A GB939116A (en) 1962-03-28 1962-03-28 Preparation of glycol esters of terephthalic acid

Publications (1)

Publication Number Publication Date
GB939116A true GB939116A (en) 1963-10-09

Family

ID=9993840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1185062A Expired GB939116A (en) 1962-03-28 1962-03-28 Preparation of glycol esters of terephthalic acid

Country Status (1)

Country Link
GB (1) GB939116A (en)

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