GB835442A - Glycol esters of terephthalic acid - Google Patents

Glycol esters of terephthalic acid

Info

Publication number
GB835442A
GB835442A GB33484/56A GB3348456A GB835442A GB 835442 A GB835442 A GB 835442A GB 33484/56 A GB33484/56 A GB 33484/56A GB 3348456 A GB3348456 A GB 3348456A GB 835442 A GB835442 A GB 835442A
Authority
GB
United Kingdom
Prior art keywords
terephthalic acid
titanium dioxide
making
glycol
ethylene glycol
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
GB33484/56A
Inventor
Neil Munro Duncan Macean
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to ES0238354A priority Critical patent/ES238354A1/en
Publication of GB835442A publication Critical patent/GB835442A/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
    • 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
    • C08G63/82—Preparation processes characterised by the catalyst used
    • C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof

Landscapes

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

Abstract

In a process for making glycol terephthalates by esterifying free terephthalic acid with a glycol of formula HO(CH2)nOH where n is 2-10 under superatmospheric pressure, as claimed in Specification 777,628, titanium dioxide is used as an esterification catalyst in an amount exceeding 0.2% by weight of the terephthalic acid. As additional catalysts there may be used alkali or alkaline earth metal salts of terephthalic acid (see Specification 782,036), which may be added as such or formed in situ by the addition of the oxides or hydroxides of the metals. Examples describe the making of ethylene glycol terephthalates by autoclaving a mixture of terephthalic acid, ethylene glycol, titanium dioxide (and, if desired, calcium oxide) at 220-250 DEG C. and 50 p.s.i. The esters are polycondensed to high molecular weight products (see Group IV (a)).ALSO:In a process for making polyalkylene terephthalates by esterifying free terephthalic acid with a glycol of formula HO(CH2)nOH, where n is 2-10 under superatmospheric pressure as claimed in Specification 777,628, titanium dioxide is used as an esterification catalyst in an amount exceeding 0.2% by weight of the terephthalic acid. As additional catalysts there may be used alkali or alkaline earth metal salts of terephthalic acid (see Specification 782,036) which may be added as such or formed in situ by the addition of the oxides or hydroxide of the metals. Examples describe the making of polyethylene terephthalate by autoclaving a mixture of terephthalic acid, ethylene glycol, titanium dioxide (and, if desired, calcium oxide) at 220-250 DEG and 50 p.s.i. followed by polycondensing the resulting ester at 275 DEG C. and 0.2 mm. of Hg. in the presence of antimony oxide.
GB33484/56A 1956-11-02 1956-11-02 Glycol esters of terephthalic acid Expired GB835442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES0238354A ES238354A1 (en) 1956-11-02 1957-10-31 Procedure for obtaining esters (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB351584X 1956-11-02

Publications (1)

Publication Number Publication Date
GB835442A true GB835442A (en) 1960-05-18

Family

ID=10374498

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33484/56A Expired GB835442A (en) 1956-11-02 1956-11-02 Glycol esters of terephthalic acid

Country Status (5)

Country Link
BE (1) BE562086A (en)
CH (1) CH351584A (en)
DE (1) DE1126136B (en)
FR (1) FR1196911A (en)
GB (1) GB835442A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS504038B1 (en) * 1969-01-17 1975-02-13
US3997512A (en) 1973-11-21 1976-12-14 American Cyanamid Company High molecular weight polyester resin, the method of making the same
US4028307A (en) 1975-05-30 1977-06-07 Fiber Industries, Inc. Preparation of polyesters using salts of substituted quaternary ammonium bases
US4076798A (en) 1975-05-29 1978-02-28 American Cyanamid Company High molecular weight polyester resin, the method of making the same and the use thereof as a pharmaceutical composition

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB610137A (en) * 1946-03-28 1948-10-12 James Tennant Dickson Process for incorporating pigments or delustrants with highly polymeric linear esters

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS504038B1 (en) * 1969-01-17 1975-02-13
US3997512A (en) 1973-11-21 1976-12-14 American Cyanamid Company High molecular weight polyester resin, the method of making the same
US4076798A (en) 1975-05-29 1978-02-28 American Cyanamid Company High molecular weight polyester resin, the method of making the same and the use thereof as a pharmaceutical composition
US4028307A (en) 1975-05-30 1977-06-07 Fiber Industries, Inc. Preparation of polyesters using salts of substituted quaternary ammonium bases

Also Published As

Publication number Publication date
FR1196911A (en) 1959-11-26
CH351584A (en) 1961-01-31
DE1126136B (en) 1962-03-22
BE562086A (en)

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