GB2075999B - Improved polyamide acid polymer coating composition and bondable substrate - Google Patents

Improved polyamide acid polymer coating composition and bondable substrate

Info

Publication number
GB2075999B
GB2075999B GB8112645A GB8112645A GB2075999B GB 2075999 B GB2075999 B GB 2075999B GB 8112645 A GB8112645 A GB 8112645A GB 8112645 A GB8112645 A GB 8112645A GB 2075999 B GB2075999 B GB 2075999B
Authority
GB
United Kingdom
Prior art keywords
coating composition
polymer coating
acid polymer
polyamide acid
improved polyamide
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
GB8112645A
Other versions
GB2075999A (en
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of GB2075999A publication Critical patent/GB2075999A/en
Application granted granted Critical
Publication of GB2075999B publication Critical patent/GB2075999B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H01F41/122—Insulating between turns or between winding layers
    • 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
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1003—Preparatory processes
    • C08G73/1007—Preparatory processes from tetracarboxylic acids or derivatives and diamines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
    • H01B3/306—Polyimides or polyesterimides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/308—Wires with resins
GB8112645A 1980-05-19 1981-04-23 Improved polyamide acid polymer coating composition and bondable substrate Expired GB2075999B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15072580A 1980-05-19 1980-05-19

Publications (2)

Publication Number Publication Date
GB2075999A GB2075999A (en) 1981-11-25
GB2075999B true GB2075999B (en) 1985-01-23

Family

ID=22535751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8112645A Expired GB2075999B (en) 1980-05-19 1981-04-23 Improved polyamide acid polymer coating composition and bondable substrate

Country Status (5)

Country Link
JP (1) JPS5716026A (en)
AU (1) AU7055681A (en)
DE (1) DE3118948A1 (en)
FR (1) FR2482607B1 (en)
GB (1) GB2075999B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62143929A (en) * 1985-07-16 1987-06-27 Kanegafuchi Chem Ind Co Ltd Thin film made of polyimide precursor
CA1294731C (en) * 1986-04-25 1992-01-21 Masakazu Uekita Copolymeric and amphiphilic polyimide precursor, process for preparing the same and thin film
JPH01245064A (en) * 1988-03-28 1989-09-29 Nippon Steel Chem Co Ltd Coating composition and usage thereof
JP2700688B2 (en) * 1989-06-06 1998-01-21 新日本理化 株式会社 Aqueous surface modifier composition
EP0410702B1 (en) * 1989-07-24 1996-04-10 Chisso Corporation Printing ink composition
JP6350526B2 (en) * 2013-06-27 2018-07-04 宇部興産株式会社 Polyimide precursor and polyimide
WO2020237018A1 (en) * 2019-05-22 2020-11-26 Advansix Resins & Chemicals Llc Polymer compositions for forming an enamel coating on a wire

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179614A (en) * 1961-03-13 1965-04-20 Du Pont Polyamide-acids, compositions thereof, and process for their preparation
US3377310A (en) * 1964-10-22 1968-04-09 Monsanto Co Coating compositions containing crosslinkable polyamides dissovled in phenolic solvents
US3426098A (en) * 1965-05-20 1969-02-04 Schenectady Chemical Polyester-polyimide wire enamel
GB1155541A (en) * 1966-03-15 1969-06-18 Du Pont Chemical and Heat Conversion of Polyamide-acids to Polyimides
US3555113A (en) * 1968-05-21 1971-01-12 Westinghouse Electric Corp Blends of polymeric amide-imide-ester wire enamels and conductors insulated therewith
GB1277824A (en) * 1968-09-02 1972-06-14 Toray Industries Polyimides
FR2046428A5 (en) * 1969-04-24 1971-03-05 Toray Industries
US3663510A (en) * 1969-05-08 1972-05-16 Gen Electric Process for producing polyamide coating materials
US4073788A (en) * 1969-05-08 1978-02-14 General Electric Company Partially imidized polyamide-acid polymers, aqueous coating compositions, coated wire and method, and partially imidized intermediate
US3652500A (en) * 1969-08-21 1972-03-28 Gen Electric Process for producing polyamide coating materials by endcapping
DE2121254A1 (en) * 1971-04-30 1972-11-09 Dynamit Nobel Ag, 5210 Troisdorf Catalytic polyamide acid solns prodn - useful as electrical wire coatings, having good storage props
US4181641A (en) * 1977-01-24 1980-01-01 General Electric Company Polyetheramide-acid-imide solution and process for preparation thereof
US4290936A (en) * 1978-11-09 1981-09-22 Ube Industries, Ltd. Process for preparing polyimide solution

Also Published As

Publication number Publication date
AU7055681A (en) 1981-11-26
GB2075999A (en) 1981-11-25
FR2482607B1 (en) 1987-01-09
JPS5716026A (en) 1982-01-27
FR2482607A1 (en) 1981-11-20
DE3118948A1 (en) 1982-02-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee