GB731023A - Improvements relating to the production of glycol terephthalate monomers - Google Patents

Improvements relating to the production of glycol terephthalate monomers

Info

Publication number
GB731023A
GB731023A GB1554453A GB1554453A GB731023A GB 731023 A GB731023 A GB 731023A GB 1554453 A GB1554453 A GB 1554453A GB 1554453 A GB1554453 A GB 1554453A GB 731023 A GB731023 A GB 731023A
Authority
GB
United Kingdom
Prior art keywords
hydride
per cent
glycol
interchange
production
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
GB1554453A
Inventor
Henry Robert Billica
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 GB1554453A priority Critical patent/GB731023A/en
Publication of GB731023A publication Critical patent/GB731023A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
    • B01J31/12—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides
    • B01J31/121—Metal hydrides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/24—Nitrogen compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

Glycol terephthalate monomers are obtained by ester interchange between an alkyl ester of terephthalic acid and a glycol HO(CH2)nOH, n being 2 to 10, in presence of a catalyst consisting of lithium hydride, sodium hydride or calcium hydride, preferably dissolved in the reaction mixture. The reaction is described for the interchange between dimethyl terephthalate and ethylene glycol in presence of amounts of 0.007 to 0.02 per cent of lithium hydride, 0.01 to 0.05 per cent of calcium hydride and 0.03 per cent of sodium hydride, at temperatures of 110 DEG to 170 DEG C., and preferably by continuous process. Other glycols specified as reactants include tri-octa-methylene glycols. The monomer may be polymerized. Mixtures of esters may also take part in the ester interchange to give mixed products, containing for example dimethyl sebacate, which may be polymerized to form a linear co-polyester.
GB1554453A 1953-06-05 1953-06-05 Improvements relating to the production of glycol terephthalate monomers Expired GB731023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1554453A GB731023A (en) 1953-06-05 1953-06-05 Improvements relating to the production of glycol terephthalate monomers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1554453A GB731023A (en) 1953-06-05 1953-06-05 Improvements relating to the production of glycol terephthalate monomers

Publications (1)

Publication Number Publication Date
GB731023A true GB731023A (en) 1955-06-01

Family

ID=10061014

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1554453A Expired GB731023A (en) 1953-06-05 1953-06-05 Improvements relating to the production of glycol terephthalate monomers

Country Status (1)

Country Link
GB (1) GB731023A (en)

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