GB1093734A - A process for the production of insulating coatings on electric conductors - Google Patents

A process for the production of insulating coatings on electric conductors

Info

Publication number
GB1093734A
GB1093734A GB2447966A GB2447966A GB1093734A GB 1093734 A GB1093734 A GB 1093734A GB 2447966 A GB2447966 A GB 2447966A GB 2447966 A GB2447966 A GB 2447966A GB 1093734 A GB1093734 A GB 1093734A
Authority
GB
United Kingdom
Prior art keywords
amino
acid
bis
coating
cresol
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
GB2447966A
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.)
Axalta Coating Systems Germany GmbH and Co KG
Original Assignee
Herberts GmbH
Dr Kurt Herberts and Co GmbH
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 Herberts GmbH, Dr Kurt Herberts and Co GmbH filed Critical Herberts GmbH
Publication of GB1093734A publication Critical patent/GB1093734A/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
    • 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
    • C08G73/16—Polyester-imides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/065—Insulating conductors with lacquers or enamels
    • 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

Abstract

An insulating coating for an electrical conductor is produced by coating the conductor with a solution in an organic solvent of a hardenable condensation product, which contains polybasic carboxylic acid radicals, polyhydric alcohol radicals, amide groups and 5-membered imide rings, and heating the coating. The condensation product may be derived from a polycarboxylic acid containing a pair of ortho carbonyl groups or an anhydride threof and an amino-compound, there being 1-1.95 pairs of carbonyl groups of anhydride groups present per pair of amino-groups. The amino-compound may be a polyamine, an aminoalcohol, aminophenol or aminocarboxylic acid. A polyhydric phenol may also be present. Compounds specified include trimellitic, pyromellitic, mellitic, terephthalic, isophthalic, naphthalene - 2,6 - dicarboxylic, trimesic, m - and p-aminobenzoic, 5 - aminoisophthalic, and aminoacetic acids, their esters and anhydrides, bis(4 - aminophenyl)methane, bis(4 - aminophenyl)ether, aminophenol, ethanolamine, 2-amino - 2 -methyl - propanol, 2 - amino - 2-methylpropane - 1,3 - diol, tris(hydroxymethyl)amino ethane, ethylene and propylene glycols, bis[4(b - hydroxyethoxy)phenyl]propane, dimethylolcyclohexane, pentaerythritol, bisphenyl - A, hydroquinone, resorcinol, phenolphthalein, glycerol and trimethylol propane. The condensation may take place at 100-300 DEG C. in the presence of a solvent and a catalyst. A polyhydric alcohol or low m.p. polyester may simultaneously act as solvent and reactant. Solvents specified include cresol, a polyester produced from ethylene glycol, glycerol and terephthalic acid in the presence of zinc acetate and cresol (Examples 3, 4), a polyester prepared from ethylene glycol and trimesic acid in the presence of zinc acetate and cresol (Example 6) and a polyesteramide prepared from 5-aminoisophthalic acid and ethylene glycol in the presence of zinc acetate and cresol (Example 5). Zinc acetate is specified as catalyst. After condensation the eliminated water and any excess polyhydric alcohol may be distilled out at up to 300 DEG C. Solvents for the coating composition specified include cresol, naphtha, tetralin, xylene, propylene glycol, diacetone alcohol and ethylene glycol mono methyl ether monoacetate. The coating composition may contain a catalyst, e.g. polymeric butyl titanates. It may be hardened at 300-500 DEG C.ALSO:Insulating coatings on electrical conductors are produced by coating them with a solution of a hardenable polyester-amide-imide which contains in the molecule radicals derived from an acid having at least 3 carboxyl groups, two of which are on adjacent carbon atoms, radicals derived from a polyhydric alcohol and radicals derived from an amino compound having one amino group and at least one other amino, hydroxyl or carboxyl group, in the presence of an organic solvent, the coating being hardened by heating, wherein at least some of the amino groups co-condensed are in the form of amide bonds and the number of amide bonds does not exceed the number of five-membered imide rings. A polyhydric phenol may also be present. Polyfunctional carboxylic acids specified include: trimellitic, pyromellitic and mellitic. Other acids which may be present include terephthalic, isophthalic, naphthalene-2, 6-dicarboxylic and trimesic. Polyhydric alcohols and phenols specified include: ethylene glycol, propylene glycol, bis[4(b -hydroxyethoxy)phenyl] propane, dimethylol cyclohexane, pentaerythritol, bisphenol-A, hydroquinone, resorcinol, phenolphthalein, glycerol and trimethylol propane. Amino compounds specified include aminobenzoic acid, 5-amino-isophthalic acid, aminoacetic acid, bis(4-aminophenyl)methane, bis(4 - aminophenyl)ether, aminophenol, ethanolamine, 2-amino-2-methylpropane-1,3-diol and tris(hydroxymethyl)amino -ethane. Solvents specified include cresol, naphtha, tetralin, xylene, propylene glycol, diacetone alcohol and ethylene glycol monomethyl ether mono acetate. The composition is applied to copper wires and hardened at 300-500 DEG C using a polymeric butyl titanate as catalyst.
GB2447966A 1965-06-01 1966-06-01 A process for the production of insulating coatings on electric conductors Expired GB1093734A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH0056189 1965-06-01

Publications (1)

Publication Number Publication Date
GB1093734A true GB1093734A (en) 1967-12-06

Family

ID=7159290

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2447966A Expired GB1093734A (en) 1965-06-01 1966-06-01 A process for the production of insulating coatings on electric conductors

Country Status (4)

Country Link
DE (1) DE1494457A1 (en)
GB (1) GB1093734A (en)
SE (1) SE300842B (en)
YU (1) YU34976B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936404A (en) * 1973-08-17 1976-02-03 Nitto Electric Industrial Co., Ltd. Aqueous baking varnishes from carboxylic polyester and carboxylic polyimide, and coated article
US4008195A (en) * 1973-08-16 1977-02-15 Nitto Electric Industrial Co., Ltd. Aqueous insulating varnishes
US4117032A (en) * 1976-09-23 1978-09-26 Westinghouse Electric Corp. Wire coating powder
US4496715A (en) * 1972-09-25 1985-01-29 Westinghouse Electric Corp. Amide-imide-ester wire enamels
EP0171707A2 (en) * 1984-08-11 1986-02-19 Bayer Ag Process for the fabrication of polyimide-esters of trimellitic acid
EP0225529A2 (en) * 1985-12-04 1987-06-16 BASF Aktiengesellschaft Wholly aromatic mesogenic polyesteramideimides, their fabrication and their use

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE633383A (en) *
GB775082A (en) * 1954-12-10 1957-05-22 Gen Electric Improvements relating to electrical conductors insulated with polyesters
DE1099673B (en) * 1955-11-03 1961-02-16 Beck & Co G M B H Dr Wire enamels for the electrical insulation of metal wires
CH445846A (en) * 1959-04-01 1967-10-31 Du Pont Process for the production of polyimide molded articles
GB903272A (en) * 1959-04-01 1962-08-15 Du Pont Method of preparing polyimides
DE1415174A1 (en) * 1959-12-16 1970-02-12 Robert Hermeyer Device for switching connections on and off or switching over connections in electrotechnical devices, preferably those used in high-frequency communications technology
FR1283378A (en) * 1961-01-11 1962-02-02 Westinghouse Electric Corp Linear polymer polyimides
NL299131A (en) * 1962-10-11
DE1494452C2 (en) * 1962-10-13 1983-11-10 Herberts Gmbh, 5600 Wuppertal Highly heat-resistant coatings provide electrical insulating varnish
DE1495456A1 (en) * 1963-06-29 1969-10-23 Ohm Dr Klaus Process for the production of wire enamels
DE1495152B2 (en) * 1963-11-15 1973-07-12 Dr. Beck & Co Ag, 2000 Hamburg METHOD FOR MANUFACTURING HEAT RESIN RESIN
DE1494526A1 (en) * 1964-05-06 1969-12-11 Schramm Lack & Farbenfab Electrical insulating wire enamels

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496715A (en) * 1972-09-25 1985-01-29 Westinghouse Electric Corp. Amide-imide-ester wire enamels
US4008195A (en) * 1973-08-16 1977-02-15 Nitto Electric Industrial Co., Ltd. Aqueous insulating varnishes
US3936404A (en) * 1973-08-17 1976-02-03 Nitto Electric Industrial Co., Ltd. Aqueous baking varnishes from carboxylic polyester and carboxylic polyimide, and coated article
US4117032A (en) * 1976-09-23 1978-09-26 Westinghouse Electric Corp. Wire coating powder
EP0171707A2 (en) * 1984-08-11 1986-02-19 Bayer Ag Process for the fabrication of polyimide-esters of trimellitic acid
EP0171707A3 (en) * 1984-08-11 1988-03-23 Bayer Ag Process for the fabrication of polyimide-esters of trimellitic acid
EP0225529A2 (en) * 1985-12-04 1987-06-16 BASF Aktiengesellschaft Wholly aromatic mesogenic polyesteramideimides, their fabrication and their use
EP0225529A3 (en) * 1985-12-04 1988-09-21 BASF Aktiengesellschaft Wholly aromatic mesogenic polyesteramideimides, their fabrication and their use

Also Published As

Publication number Publication date
DE1494457A1 (en) 1969-12-11
SE300842B (en) 1968-05-13
YU34976B (en) 1980-06-30
YU100566A (en) 1979-12-31

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