GB793589A - Process for making polyglycol terephthalates and films made therefrom - Google Patents

Process for making polyglycol terephthalates and films made therefrom

Info

Publication number
GB793589A
GB793589A GB3131/56A GB313156A GB793589A GB 793589 A GB793589 A GB 793589A GB 3131/56 A GB3131/56 A GB 3131/56A GB 313156 A GB313156 A GB 313156A GB 793589 A GB793589 A GB 793589A
Authority
GB
United Kingdom
Prior art keywords
glycol
ester
film
acetate
terephthalate
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
GB3131/56A
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
Publication of GB793589A publication Critical patent/GB793589A/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
    • C08G63/86—Germanium, antimony, or compounds thereof
    • C08G63/866—Antimony or compounds thereof
    • 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
    • C08G63/83—Alkali metals, alkaline earth metals, beryllium, magnesium, copper, silver, gold, zinc, cadmium, mercury, manganese, or compounds thereof
    • 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
    • C08G63/87—Non-metals or inter-compounds thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

A polyglycol terephthalate is made by polymerizing an ester derived from terephthalic acid and a polymethylene glycol containing 2-10 carbon atoms in the presence of mono-ammonium phosphate, di-ammonium phosphate or mono-ammonium phosphite. The glycol ester is preferably made by effecting ester-interchange between a dialkyl terephthalate and the glycol and polymerizing the resulting glycol ester in the presence of an ester-interchange/polymerization catalyst comprising (a) metallic lithium, sodium, calcium or magnesium or a hydride, alcoholate or glycol-soluble monocarboxylic acid salt thereof, e.g. lithium glycolate or magnesium acetate, (b) a glycol-soluble salt of zinc, manganese or cadmium and a monocarboxylic acid, e.g. the acetate, lactate, salicylate, propionate, butyrate, valerate, stearate or laurate, or (c) antimony trioxide, antimonyl potassium tartrate, antimonous oxychloride, antimony trifluoride or sodium antimonyl hydroxyacetate. Part of the terephthalic acid may be replaced by isophthalic, bibenzoic, hexahydroterephthalic, adipic, sebacic, azelaic, naphthalic or 2 : 5-dimethylterephthalic acids or by bis-p-carboxyphenoxyethane. In examples, ester-interchange is effected between dimethyl terephthalate and ethylene glycol at 140-220 DEG C. in presence of lithium hydride, antimony oxide and zinc acetate or manganous acetate. The phosphorus compound is then added and poly-condensation of the bis-2-hydroxyethyl terephthalate effected at 230-290 DEG C. and 0.05-2.5 mm. of Hg. pressure. Films made from the above polymethylene terephthalates have improved dielectric properties and improved transparency. The films may be (a) stretched in two directions at right-angles to dimensions up to 3.25 times the original dimension of the film, (b) rolled in two directions at right-angles, (c) stretched in one direction and rolled in a direction perpendicular thereto, or (d) stretched in one direction only, e.g. to twice the original dimension. The extended film is then heat-set at 150-250 DEG C. whilst restricting dimensional change. To increase film slip, the film may be sprayed with an aqueous dispersion of bentonite and then passed through a dryer to remove water. Many uses are specified for the film, examples being for electrical insulation purposes, as a closure for containers and for encasing objects. Specification 578,079, [Group IV], and U.S.A. Specifications 2,728,790 and 2,784,457 are referred to.
GB3131/56A 1955-01-31 1956-01-31 Process for making polyglycol terephthalates and films made therefrom Expired GB793589A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US793589XA 1955-01-31 1955-01-31
US1146714XA 1955-01-31 1955-01-31

Publications (1)

Publication Number Publication Date
GB793589A true GB793589A (en) 1958-04-16

Family

ID=26761918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3131/56A Expired GB793589A (en) 1955-01-31 1956-01-31 Process for making polyglycol terephthalates and films made therefrom

Country Status (2)

Country Link
FR (1) FR1146714A (en)
GB (1) GB793589A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310532A (en) * 1961-05-10 1967-03-21 Teikoku Jinzo Kenshi Kk Method for preparation of modified polyesters having fiber- and film-forming properties
FR2162222A1 (en) * 1971-12-02 1973-07-13 Eastman Kodak Co
EP0425215A2 (en) * 1989-10-23 1991-05-02 Hoechst Celanese Corporation Catalyst system for producing polyethylene terephthalate from a lower dialkyl ester of a dicarboxylic acid and a glycol
EP0447110A2 (en) * 1990-03-07 1991-09-18 Hoechst Celanese Corporation Producing a copolyester from a lower dialkyl ester of terephthalic acid, a glycol and a dicarboxylic acid
GB2369824A (en) * 2000-09-11 2002-06-12 Nat Inst Of Advanced Ind Scien Method of producing an aliphatic polyester

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL255991A (en) * 1959-09-23
GB1037256A (en) * 1962-07-21 1966-07-27 Toyo Rayon Co Ltd Process for producing polyesters

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3310532A (en) * 1961-05-10 1967-03-21 Teikoku Jinzo Kenshi Kk Method for preparation of modified polyesters having fiber- and film-forming properties
FR2162222A1 (en) * 1971-12-02 1973-07-13 Eastman Kodak Co
EP0425215A2 (en) * 1989-10-23 1991-05-02 Hoechst Celanese Corporation Catalyst system for producing polyethylene terephthalate from a lower dialkyl ester of a dicarboxylic acid and a glycol
EP0425215A3 (en) * 1989-10-23 1992-03-18 Hoechst Celanese Corporation Catalyst system for producing polyethylene terephthalate from a lower dialkyl ester of a dicarboxylic acid and a glycol
EP0447110A2 (en) * 1990-03-07 1991-09-18 Hoechst Celanese Corporation Producing a copolyester from a lower dialkyl ester of terephthalic acid, a glycol and a dicarboxylic acid
EP0447110A3 (en) * 1990-03-07 1992-03-11 Hoechst Celanese Corporation Producing a copolyester from a lower dialkyl ester of terephthalic acid, a glycol and a dicarboxylic acid
GB2369824A (en) * 2000-09-11 2002-06-12 Nat Inst Of Advanced Ind Scien Method of producing an aliphatic polyester
US6639045B2 (en) 2000-09-11 2003-10-28 National Institute Of Advanced Industrial Science And Technology Method of producing aliphatic polyester and product obtained thereby
GB2369824B (en) * 2000-09-11 2004-08-04 Nat Inst Of Advanced Ind Scien Method of producing aliphatic polyester and product obtained thereby

Also Published As

Publication number Publication date
FR1146714A (en) 1957-11-14

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