GB793111A - Improvements in the manufacture of highly polymeric polymethylene terephthalates - Google Patents

Improvements in the manufacture of highly polymeric polymethylene terephthalates

Info

Publication number
GB793111A
GB793111A GB1532755A GB1532755A GB793111A GB 793111 A GB793111 A GB 793111A GB 1532755 A GB1532755 A GB 1532755A GB 1532755 A GB1532755 A GB 1532755A GB 793111 A GB793111 A GB 793111A
Authority
GB
United Kingdom
Prior art keywords
terephthalate
titanate
glycol
terephthalic acid
resulting
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
GB1532755A
Inventor
Elias Isaacs
Norman Standring
Norman Fletcher
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
Priority to IT554213D priority Critical patent/IT554213A/it
Priority to NL207417D priority patent/NL207417A/xx
Priority to NL97626D priority patent/NL97626C/xx
Priority to BE548082D priority patent/BE548082A/xx
Priority to CA599386A priority patent/CA599386A/en
Priority to GB1532755A priority patent/GB793111A/en
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to DE19561420515 priority patent/DE1420515A1/en
Priority to ES0228725A priority patent/ES228725A1/en
Priority to FR1153698D priority patent/FR1153698A/en
Priority to CH3368856A priority patent/CH364628A/en
Publication of GB793111A publication Critical patent/GB793111A/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
    • C08G63/82—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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

In a process for making highly polymeric polymethylene terephthalates by reacting a glycol of formula HO(CH2)nOH (where n is 2-10) with terephthalic acid or an ester-forming derivative thereof, and polycondensing the resulting glycol terephthalate, at least the polycondensation step is effected in presence of an organic titanate, especially an alkyl or aryl titanate. An additional polycondensation catalyst may be used, e.g. antimony oxide, and when starting from a dialkyl terephthalate, an esterinterchange catalyst may be used, e.g. zinc acetate. Part of the terephthalic acid may be replaced by another dicarboxylic acid (e.g. isophthalic acid in the form of dimethyl isophthalate) and a mixture of two glycols of the above series may be used. Titanium dioxide, which acts as a delustrant, may also be present during the polyesterification. In examples: (1)-(9) ester-interchange was effected between dimethyl terephthalate and ethylene glycol in presence of tetramethyl or tetrabutyl titanate and in some examples also in presence of zinc acetate at 149-218 DEG C. and the resulting glycol terephthalate polycondensed at 275 DEG C. and 1 mm. of Hg. pressure; (10) terephthalic acid and ethylene glycol were reacted at 230 DEG C. and 35 lbs./sq. inch and the resulting glycol terephthalate polycondensed at 275 DEG C. and 0.3 mm. of Hg in presence of tetramethyl titanate and titanium dioxide. Subject-matter in Specification 769,220 is disclaimed.
GB1532755A 1955-05-27 1955-05-27 Improvements in the manufacture of highly polymeric polymethylene terephthalates Expired GB793111A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
NL207417D NL207417A (en) 1955-05-27
NL97626D NL97626C (en) 1955-05-27
BE548082D BE548082A (en) 1955-05-27
CA599386A CA599386A (en) 1955-05-27 Highly polymeric polymethylene terephthalates
IT554213D IT554213A (en) 1955-05-27
GB1532755A GB793111A (en) 1955-05-27 1955-05-27 Improvements in the manufacture of highly polymeric polymethylene terephthalates
DE19561420515 DE1420515A1 (en) 1955-05-27 1956-05-23 Process for the production of polyesters
ES0228725A ES228725A1 (en) 1955-05-27 1956-05-24 Improvements in the manufacture of highly polymeric polymethylene terephthalates
FR1153698D FR1153698A (en) 1955-05-27 1956-05-28 Manufacture of polyesters
CH3368856A CH364628A (en) 1955-05-27 1956-05-28 Process for the production of high polymer polyesters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1532755A GB793111A (en) 1955-05-27 1955-05-27 Improvements in the manufacture of highly polymeric polymethylene terephthalates

Publications (1)

Publication Number Publication Date
GB793111A true GB793111A (en) 1958-04-09

Family

ID=10057134

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1532755A Expired GB793111A (en) 1955-05-27 1955-05-27 Improvements in the manufacture of highly polymeric polymethylene terephthalates

Country Status (9)

Country Link
BE (1) BE548082A (en)
CA (1) CA599386A (en)
CH (1) CH364628A (en)
DE (1) DE1420515A1 (en)
ES (1) ES228725A1 (en)
FR (1) FR1153698A (en)
GB (1) GB793111A (en)
IT (1) IT554213A (en)
NL (2) NL97626C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047608A1 (en) * 1980-09-08 1982-03-17 Rohm And Haas Company Poly(ethylene terephthalate) and process for preparing it

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079368A (en) * 1959-11-23 1963-02-26 American Cyanamid Co Process for the preparation of high molecular weight polymerizable orthophthalate polyesters
BE794423A (en) * 1972-01-24 1973-07-23 Rhone Poulenc Textile NEW PROCESS FOR MANUFACTURING POLYESTERS AND PRODUCTS THUS OBTAINED
US4365054A (en) * 1975-08-11 1982-12-21 The Firestone Tire & Rubber Company Ethylene glycol terephthalate production
US4356299A (en) * 1982-02-04 1982-10-26 Rohm And Haas Company Catalyst system for a polyethylene terephthalate polycondensation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047608A1 (en) * 1980-09-08 1982-03-17 Rohm And Haas Company Poly(ethylene terephthalate) and process for preparing it

Also Published As

Publication number Publication date
IT554213A (en)
NL207417A (en)
NL97626C (en)
ES228725A1 (en) 1956-08-16
FR1153698A (en) 1958-03-20
CA599386A (en) 1960-06-07
DE1420515A1 (en) 1969-03-27
BE548082A (en)
CH364628A (en) 1962-09-30

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