GB775082A - Improvements relating to electrical conductors insulated with polyesters - Google Patents

Improvements relating to electrical conductors insulated with polyesters

Info

Publication number
GB775082A
GB775082A GB24036/55A GB2403655A GB775082A GB 775082 A GB775082 A GB 775082A GB 24036/55 A GB24036/55 A GB 24036/55A GB 2403655 A GB2403655 A GB 2403655A GB 775082 A GB775082 A GB 775082A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
coating
wire
per cent
equivalents per
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
GB24036/55A
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 GB775082A publication Critical patent/GB775082A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01B3/42—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 polyesters; polyethers; polyacetals

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)
  • Paints Or Removers (AREA)

Abstract

775,082. Insulation of dynamo electric machine windings. GENERAL ELECTRIC CO. Aug. 19, 1955 [Dec. 10, 1954], No. 24036/55. Class 35. The windings of a dynamo-electric machine are insulated by coating them with a polyester synthetic resin which is the reaction product of (a) 25-56 equivalents per cent of terephthalic and/or isophthalic acid (or ester-forming derivatives thereof); (b) 15-46 equivalents per cent of ethylene glycol; and (c) 13-44 equivalents per cent of a saturated aliphatic polyhydric alcohol containing at least three hydroxyl groups, e.g. glycerine, 1:1 : 1 - trimethylol ethane, 1 : 1 : 1 - trimethylol propane, pentaerythritol, sorbitol, mannitol, diglycerol or dipentaerythritol. The polyesters per se are claimed in Specification 775,081, [Group IV (a)]. The coating is applied by passing the wire through the resin dissolved in a solvent (e.g. cresols, xylenols, polyhydroxy benzenes, petroleum hydrocarbons, xylenes or a mixture of polyalkyl benzene (known under the R.T.M. " Solvesso " 100 or 150), then through a die and then through an oven when the resin is cured on the wire; this process being repeated a number of times if necessary. After the last pass, the wire is wound on a reel. The polyester resins may be mixed with minor amounts of other resins, e.g. melamine-formaldehyde, epoxide, phenol - formaldehyde, aniline - formaldehyde, urea - formaldehyde, silicone, cellulose acetate, polyamide, vinyl, ethylene, styrene or butadiene-styrene resins. Many examples are given which describe the coating of round or rectangular copper, aluminium or nickel-plated copper wires and which also give details of certain physical characteristics of the enamelled wires.
GB24036/55A 1954-12-10 1955-08-19 Improvements relating to electrical conductors insulated with polyesters Expired GB775082A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US1033291XA 1954-12-10 1954-12-10
US213987XA 1954-12-10 1954-12-10
US775082XA 1954-12-10 1954-12-10

Publications (1)

Publication Number Publication Date
GB775082A true GB775082A (en) 1957-05-22

Family

ID=66635953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24036/55A Expired GB775082A (en) 1954-12-10 1955-08-19 Improvements relating to electrical conductors insulated with polyesters

Country Status (4)

Country Link
JP (1) JPS326742B1 (en)
AT (1) AT213987B (en)
DE (1) DE1033291B (en)
GB (1) GB775082A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190770A (en) * 1961-04-24 1965-06-22 Shawinigan Resins Corp Metal conductor coated with polyester outer layer and polymide inner layer

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179319B (en) * 1958-11-10 1964-10-08 Bayer Ag Lacquer solutions, especially stoving or wire lacquers
DE1082314B (en) * 1959-01-19 1960-05-25 Herberts & Co Gmbh Dr Kurt Electrical conductors with polyester resin insulation and process for their manufacture
DE1083370B (en) * 1959-01-19 1960-06-15 Kurt Herbert & Co Vorm Otto Lo Electrical conductors with polyester resin insulation and process for their manufacture
DE1285081B (en) * 1959-02-02 1968-12-12 Gen Electric Process for the production of insulating coatings on electrical conductors
US3161541A (en) * 1959-04-27 1964-12-15 Gen Electric Synthetic resin and conductors insulated therewith
DE1181844B (en) * 1960-07-30 1964-11-19 Bayer Ag Lacquer solutions
DE1164664B (en) * 1961-06-12 1964-03-05 Dr Kurt Herberts &. Co vorm Otto Louis Herberts Wuppertal Barmen Process for the preparation of polyesters containing free hydroxyl groups
DE1239045B (en) * 1961-06-16 1967-04-20 Schenectady Chemical Baked enamel for wires and electrical conductors based on polytere- or isophthalic acid-ester-polyurethanes, customary solvents and, if necessary, auxiliaries
BE624621A (en) * 1961-11-10
DE1197186B (en) * 1962-03-16 1965-07-22 Cella Lackfabrik Wire enamels intended for electrical insulation
DE1494537B1 (en) * 1962-06-06 1969-12-18 Hermann Wiederhold Lackfarbenf Varnishes containing dyes for electrical conductors based on terephthalic acid polyester
DE1278048B (en) * 1963-04-03 1968-09-19 Basf Ag Electrical insulating varnishes based on polyesters
DE1645435C1 (en) * 1965-05-20 1983-04-21 Schenectady Chemicals, Inc., Schenectady, N.Y. Process for the production of polyesterimides
DE1494457A1 (en) * 1965-06-01 1969-12-11 Herberts & Co Gmbh Dr Kurt Process for the production of insulating coatings on electrical conductors
DE2843895C3 (en) * 1978-10-07 1981-11-26 Felten & Guilleaume Carlswerk AG, 5000 Köln Process for the production of electrical conductor wires insulated with lacquer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686739A (en) * 1951-05-31 1954-08-17 Dow Corning Insulated electrical conductor and method of producing same
US2686740A (en) * 1951-05-31 1954-08-17 Dow Corning Insulated electrical conductor and method of producing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3190770A (en) * 1961-04-24 1965-06-22 Shawinigan Resins Corp Metal conductor coated with polyester outer layer and polymide inner layer

Also Published As

Publication number Publication date
JPS326742B1 (en) 1957-08-26
AT213987B (en) 1961-03-10
DE1033291B (en) 1958-07-03

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