JPS56143238A - Oriented polyester film - Google Patents

Oriented polyester film

Info

Publication number
JPS56143238A
JPS56143238A JP4679880A JP4679880A JPS56143238A JP S56143238 A JPS56143238 A JP S56143238A JP 4679880 A JP4679880 A JP 4679880A JP 4679880 A JP4679880 A JP 4679880A JP S56143238 A JPS56143238 A JP S56143238A
Authority
JP
Japan
Prior art keywords
film
oxazoline
bis
low
polyester
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.)
Pending
Application number
JP4679880A
Other languages
Japanese (ja)
Inventor
Shigeru Shiozaki
Tomio Adachi
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP4679880A priority Critical patent/JPS56143238A/en
Publication of JPS56143238A publication Critical patent/JPS56143238A/en
Pending legal-status Critical Current

Links

Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:To provide the titled film which has a high polymn. degree and low extractability of low-molecular compd. from the film surface and exhibits less occurrence of drop out in a magnetic tape, by incorporating a bis-oxazoline into a linear satd. polyester. CONSTITUTION:A mixt. consisting of a substantially linear satd. polyester (A) (e.g. a satd. polyester derived from terephthalic acid and tetramethylene glycol) and 0.1-10wt% (based on the weight of the component A) bis-oxazoline of the formula (wherein R1-R8 are each H, a hydrocarbon group) such as 2,2'-bis(2-oxazoline or 2,2'-bis(4,4'-dimethyl-2-oxazoline), is melt-extruded under heating at a temp. of from the m.p. of the component A to 320 deg.C into film which is then stretched to produce an oriented polyester film having an intrinsic viscosity of 0.55 or above. The extractability of low-molecular compd. from this film with xylene solvent is not more than 1wt%. Absorbance at a wavelength of 248nm is 0.30 or below, when the soln. of low-molecular compd. extracted from the film surface with chloroform solvent is measured with a spectrophotometer.
JP4679880A 1980-04-11 1980-04-11 Oriented polyester film Pending JPS56143238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4679880A JPS56143238A (en) 1980-04-11 1980-04-11 Oriented polyester film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4679880A JPS56143238A (en) 1980-04-11 1980-04-11 Oriented polyester film

Publications (1)

Publication Number Publication Date
JPS56143238A true JPS56143238A (en) 1981-11-07

Family

ID=12757345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4679880A Pending JPS56143238A (en) 1980-04-11 1980-04-11 Oriented polyester film

Country Status (1)

Country Link
JP (1) JPS56143238A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753553A (en) * 1980-09-17 1982-03-30 Teijin Ltd Thermoformable polyester sheet
US5025052A (en) * 1986-09-12 1991-06-18 Minnesota Mining And Manufacturing Company Fluorochemical oxazolidinones
JP2010031174A (en) * 2008-07-30 2010-02-12 Teijin Ltd Polyester resin composition and biaxially oriented film using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753553A (en) * 1980-09-17 1982-03-30 Teijin Ltd Thermoformable polyester sheet
JPS6365707B2 (en) * 1980-09-17 1988-12-16 Teijin Ltd
US5025052A (en) * 1986-09-12 1991-06-18 Minnesota Mining And Manufacturing Company Fluorochemical oxazolidinones
JP2010031174A (en) * 2008-07-30 2010-02-12 Teijin Ltd Polyester resin composition and biaxially oriented film using the same

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