GB806934A - Process for the polycondensation of diglycol terephthalate - Google Patents

Process for the polycondensation of diglycol terephthalate

Info

Publication number
GB806934A
GB806934A GB2148156A GB2148156A GB806934A GB 806934 A GB806934 A GB 806934A GB 2148156 A GB2148156 A GB 2148156A GB 2148156 A GB2148156 A GB 2148156A GB 806934 A GB806934 A GB 806934A
Authority
GB
United Kingdom
Prior art keywords
solvent
terephthalate
polycondensation
amount
diglycol
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
GB2148156A
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.)
Glanzstoff AG
Vereinigte Glanzstoff Fabriken AG
Original Assignee
Glanzstoff AG
Vereinigte Glanzstoff Fabriken 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 Glanzstoff AG, Vereinigte Glanzstoff Fabriken AG filed Critical Glanzstoff AG
Publication of GB806934A publication Critical patent/GB806934A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78Preparation processes
    • C08G63/81Preparation processes using solvents

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

Polyethylene terephthalate is made by polycondensing diglycol terephthalate in the presence of 5-20 per cent by weight of one of the solvents specified in the parent Specification, the reaction temperature not exceeding 245 DEG C. and the polycondensation being completed while maintaining this amount of solvent in the reaction system. The amount of solvent may be maintained by supplying fresh solvent at the rate at which it is distilled off or by recycling the distilled solvent after separation of the solvent. The polyethylene terephthalate containing a small amount of solvent may be spun or cast. In an example, dimethyl terephthalate is re-esterified with ethylene glycol in presence of a zinc acetate-antimony oxide catalyst and the resulting diglycol terephthalate polycondensed in presence of tetrahydronaphthalene. U.S.A. Specification 2,597,643 is referred to.
GB2148156A 1955-08-08 1956-07-11 Process for the polycondensation of diglycol terephthalate Expired GB806934A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV9317A DE1005729B (en) 1955-08-08 1955-08-08 Process for the polycondensation of diol esters of aromatic dicarboxylic acids

Publications (1)

Publication Number Publication Date
GB806934A true GB806934A (en) 1959-01-07

Family

ID=7572627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2148156A Expired GB806934A (en) 1955-08-08 1956-07-11 Process for the polycondensation of diglycol terephthalate

Country Status (2)

Country Link
DE (1) DE1005729B (en)
GB (1) GB806934A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026120A1 (en) * 1979-08-27 1981-04-01 Union Carbide Corporation Process for preparing polyarylates in the presence of a cycloaliphatic compound
EP0026121A1 (en) * 1979-08-27 1981-04-01 Union Carbide Corporation Process for preparing polyarylates in the presence of a diphenyl ether compound and a magnesium catalyst
EP0026684A1 (en) * 1979-08-27 1981-04-08 Union Carbide Corporation Process for preparing polyarylates in the presence of a diphenyl ether

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745578B1 (en) * 1996-02-29 1998-05-07 Rhone Poulenc Fibres & Polymer POLYESTER MANUFACTURING PROCESS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026120A1 (en) * 1979-08-27 1981-04-01 Union Carbide Corporation Process for preparing polyarylates in the presence of a cycloaliphatic compound
EP0026121A1 (en) * 1979-08-27 1981-04-01 Union Carbide Corporation Process for preparing polyarylates in the presence of a diphenyl ether compound and a magnesium catalyst
EP0026684A1 (en) * 1979-08-27 1981-04-08 Union Carbide Corporation Process for preparing polyarylates in the presence of a diphenyl ether

Also Published As

Publication number Publication date
DE1005729B (en) 1957-04-04

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