GB1098556A - Films of stretched polyimide - Google Patents

Films of stretched polyimide

Info

Publication number
GB1098556A
GB1098556A GB1437066A GB1437066A GB1098556A GB 1098556 A GB1098556 A GB 1098556A GB 1437066 A GB1437066 A GB 1437066A GB 1437066 A GB1437066 A GB 1437066A GB 1098556 A GB1098556 A GB 1098556A
Authority
GB
United Kingdom
Prior art keywords
polyimide
planar dimension
march
films
stretched
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
GB1437066A
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 GB1098556A publication Critical patent/GB1098556A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
    • B29K2079/08—PI, i.e. polyimides or derivatives thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

1,098,556. Polyimide films. E. 1. DU PONT DE NEMOURS & CO. March 31, 1966 [March 31, 1965], No. 14370/66. Heading B5B. A polyimide or polyimide precursor film is stretched in at least one planar dimension by at least 5% at 20-550‹ C. while preventing substantial shrinkage in any planar dimension, the film having an I.V. of at least 0À1 containing a volatile material the content of which is reduced in the stretching process, and having not been previously shrunk in any planar dimension by more than 25%. A polyimide from bis(4- aminophenyl)ether and pyromellitic acid is specified; suitable precursors are polyamideacids, -acid salts, -amides or -esters. The product suitably has an I.V. of at least 0À5, and an " orientation angle " (as defined in the Specification) of less than 75 degrees in at least one direction; it may also be heat shrinkable, and flat or tubular. The usual optional additives may be present. Conventional apparatus is used.
GB1437066A 1965-03-31 1966-03-31 Films of stretched polyimide Expired GB1098556A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44438265A 1965-03-31 1965-03-31

Publications (1)

Publication Number Publication Date
GB1098556A true GB1098556A (en) 1968-01-10

Family

ID=23764651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1437066A Expired GB1098556A (en) 1965-03-31 1966-03-31 Films of stretched polyimide

Country Status (5)

Country Link
BE (1) BE678689A (en)
CH (1) CH441728A (en)
DE (1) DE1629583A1 (en)
GB (1) GB1098556A (en)
NL (1) NL6604263A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476663A1 (en) * 1980-02-25 1981-08-28 Nitto Electric Ind Co POLYIMIDE THERMORETRECABLE FILMS AND PROCESS FOR PRODUCING THE SAME
EP0064813A2 (en) * 1981-04-17 1982-11-17 Mobil Oil Corporation A method of making optically clear oriented polyimide film
JPS6361030A (en) * 1986-09-01 1988-03-17 Kanegafuchi Chem Ind Co Ltd Polyimide film and production thereof
EP0258859A3 (en) * 1986-09-01 1990-02-14 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Polyimide film and its manufacturing method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03103444A (en) * 1989-09-16 1991-04-30 Mitsui Toatsu Chem Inc Production of polyimide molded article
US5460890A (en) * 1991-10-30 1995-10-24 E. I. Du Pont De Nemours And Company Biaxially stretched isotropic polyimide film having specific properties
DE69321460T2 (en) * 1992-02-26 1999-04-29 Du Pont METHOD FOR PRODUCING AN ISOTROPIC POLYIMIDE FILM
CN110744807B (en) * 2019-10-14 2021-12-17 浙江洁美电子科技股份有限公司 Production process of BOPET (biaxially-oriented polyethylene terephthalate) base film and BOPET base film prepared by production process

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2476663A1 (en) * 1980-02-25 1981-08-28 Nitto Electric Ind Co POLYIMIDE THERMORETRECABLE FILMS AND PROCESS FOR PRODUCING THE SAME
EP0064813A2 (en) * 1981-04-17 1982-11-17 Mobil Oil Corporation A method of making optically clear oriented polyimide film
EP0064813A3 (en) * 1981-04-17 1984-11-14 Mobil Oil Corporation A method of producing a polyimide film and a polyimide film produced by such a method
JPS6361030A (en) * 1986-09-01 1988-03-17 Kanegafuchi Chem Ind Co Ltd Polyimide film and production thereof
EP0258859A3 (en) * 1986-09-01 1990-02-14 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Polyimide film and its manufacturing method
JPH0588851B2 (en) * 1986-09-01 1993-12-24 Kanegafuchi Chemical Ind

Also Published As

Publication number Publication date
BE678689A (en) 1966-09-30
CH441728A (en) 1967-08-15
DE1629583A1 (en) 1971-01-28
NL6604263A (en) 1966-10-03

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