GB1081144A - Improvements relating to the manufacture of polyester films - Google Patents

Improvements relating to the manufacture of polyester films

Info

Publication number
GB1081144A
GB1081144A GB1526565A GB1526565A GB1081144A GB 1081144 A GB1081144 A GB 1081144A GB 1526565 A GB1526565 A GB 1526565A GB 1526565 A GB1526565 A GB 1526565A GB 1081144 A GB1081144 A GB 1081144A
Authority
GB
United Kingdom
Prior art keywords
carbon atoms
acid
film
ethylene glycol
aliphatic
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
GB1526565A
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 GB1081144A publication Critical patent/GB1081144A/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
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16—Dicarboxylic acids and dihydroxy compounds
    • C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181—Acids containing aromatic rings
    • C08G63/183—Terephthalic acids
    • 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
    • C08G63/66—Polyesters containing oxygen in the form of ether groups
    • C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/672—Dicarboxylic acids and dihydroxy compounds

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)
  • Polyesters Or Polycarbonates (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

A copolyester film is made by melt extruding a copolyester of ethylene glycol, terephthalic acid and an aliphatic dibasic carboxylic acid of the formula HOOC-CH2XCH2-COOH wherein X is a chain containing 3 to 30 atoms, of which not more than 3 (all in the main chain) may be oxygen and the remainder are hydrocarbon carbon atoms, any two such oxygen atoms being separated by at least two carbon atoms, all the carbon atoms being saturated and not more than three of them being present in side chain substituents, the proportion by weight of the aliphatic acid (based on the total weight of the acid components) being 11 to 22%, and biaxially orienting and heat-setting the film. The copolyesters are preferably prepared by reacting first under ester interchange conditions and then under polymerization conditions, ethylene glycol, a dialkyl ester of terephthalic acid in which the esterifying alkyl groups contain 1 to 7 carbon atoms, and a dialkyl ester of an aliphatic dicarboxylic acid having the formula HOOC-(CH2)n-COOH, where n is 5-10, in which the esterifying alkyl groups contain 1-7 carbon atoms. The preferred copolyester is prepared from ethylene glycol, dimethyl terephthalate and dimethyl sebacate.ALSO:A copolyester film is made by melt extruding a copolyester of ethylene glycol, terephthalic acid and an aliphatic dibasic carboxylic acid of the formula HOOC-CH2XCH2-COOH wherein X is a chain containing 3 to 30 atoms, of which not more than 3 (all in the main chain) may be oxygen and the remainder are hydrocarbon carbon atoms, any two such oxygen atoms being separated by at least two carbon atoms, all the carbon atoms being saturated and not more than three of them being present in side chain substituents, the proportion by weight of the aliphatic acid (based on the total weight of the acid components) being 11% to 22%, and biaxially orienting and heat-setting the film. The film may be biaxially oriented by stretching it to 2.6 to 4.0 times its initial dimension in the machine direction and the transverse direction at a temperature of 65 to 90 DEG C. The film may then be heat-set at a temperature of 130 to 160 DEG C. The aliphatic acid may have the formula HOOC-(CH2)n-COOH in which n is 5 to 10. The aliphatic acid may be sebacic acid. The film may be coated on one or both sides with a copolymer of at least 80% by weight of vinylidene chloride and at most 20% by weight of an ethylenically unsaturated monomer copolymerizable therewith. The coated film may be given on one or both sides a top coating of a polymer of an alpha-olefine such as polyethylene or a copolymer of ethylene with propylene or the butylenes. The copolyesters of the invention may be prepared by any conventional method, e.g. as described in Specification No. 578,079. They are preferably prepared by reacting first under ester interchange conditions and then under polymerization conditions, ethylene glycol, a dialkyl ester of terephthalic acid in which the esterifying alkyl groups contain 1 to 7 carbon atoms, and a dialkyl ester of an aliphatic dicarboxylic acid having the formula HOOC-(CH2)n-COOH where n is 5-10, in which the esterifying alkyl groups contain 1-7 carbon atoms. The preferred copolyester is prepared from ethylene glycol, dimethyl terephthalate and dimethyl sebacate.
GB1526565A 1964-04-09 1965-04-09 Improvements relating to the manufacture of polyester films Expired GB1081144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US35862664A 1964-04-09 1964-04-09

Publications (1)

Publication Number Publication Date
GB1081144A true GB1081144A (en) 1967-08-31

Family

ID=23410410

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1526565A Expired GB1081144A (en) 1964-04-09 1965-04-09 Improvements relating to the manufacture of polyester films

Country Status (5)

Country Link
BE (1) BE662242A (en)
DE (1) DE1248297B (en)
GB (1) GB1081144A (en)
LU (1) LU48364A1 (en)
NL (1) NL6504590A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398022A (en) * 1980-09-02 1983-08-09 Eastman Kodak Company Extrusion blow moldable copolyesters
US7078105B2 (en) 2001-08-01 2006-07-18 Dupont Teijin Films U.S. Limited Partnership Conformable copolyester film

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465319A (en) * 1941-07-29 1949-03-22 Du Pont Polymeric linear terephthalic esters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398022A (en) * 1980-09-02 1983-08-09 Eastman Kodak Company Extrusion blow moldable copolyesters
US7078105B2 (en) 2001-08-01 2006-07-18 Dupont Teijin Films U.S. Limited Partnership Conformable copolyester film

Also Published As

Publication number Publication date
DE1248297B (en) 1967-08-24
LU48364A1 (en) 1965-10-08
BE662242A (en) 1965-10-08
NL6504590A (en) 1965-10-11

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