GB657782A - Improvements in electrically insulating coating compositions - Google Patents

Improvements in electrically insulating coating compositions

Info

Publication number
GB657782A
GB657782A GB2860448A GB2860448A GB657782A GB 657782 A GB657782 A GB 657782A GB 2860448 A GB2860448 A GB 2860448A GB 2860448 A GB2860448 A GB 2860448A GB 657782 A GB657782 A GB 657782A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde resin
acid
glycerol
partial
butanol
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
GB2860448A
Inventor
Charles Rossall Pye
Henry Francis Bremer
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.)
INDESTRUCTIBLE PAINT Co L
Original Assignee
INDESTRUCTIBLE PAINT Co L
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 INDESTRUCTIBLE PAINT Co L filed Critical INDESTRUCTIBLE PAINT Co L
Priority to GB2860448A priority Critical patent/GB657782A/en
Publication of GB657782A publication Critical patent/GB657782A/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
    • H01B3/38—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 condensation products of aldehydes with amines or amides

Landscapes

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

Abstract

An electrically-insulating coating composition comprises a mixture of an etherified urea-formaldehyde resin or an etherified melamine-formaldehyde resin and a partial polymeric ester of a polyhydric alcohol and a saturated aliphatic a o -dibasic acid, having an acid value between 70 and 110, dissolved in one or more organic solvents, the ratio in parts by weight of the solid urea- or melamine-formaldehyde resin to the solid polymeric ester being between 0.4 : 1 and 4 : 1. Solvents specified are mixtures of primary alcohols such as butanol and ethanol and aromatic hydrocarbons such as xylene and toluene; cyclohexanol, naphtha and cresylic acid. The partial polymeric esters may be made from adipic, sebacic or succinic acid and glycols, glycerol or pentaerythritol. The compositions may be coloured by addition of dyestuffs. In examples, the compositions are made by mixing in a centrifugal mixer: (1) butylated urea-formaldehyde resin in butanol and/or xylene, partial poly-ester of glycerol and sebacic acid in methylated spirits, xylene, butanol and methylated spirits; (2) butylated melamine-formaldehyde resin, partial polyester of glycerol and adipic acid, and the same solvents as in (1); (3) butylated urea-formaldehyde resin, partial polyester of glycerol and adipic acid and the same solvents as in (1); (4) butylated urea-formaldehyde resin in butanol and/or xylene, partial polyester of glycerol and sebacic acid in cyclohexanol, naphtha, butanol and methylated spirits; (5) butylated urea-formaldehyde resin, partial polyester of pentaerythritol and sebacic acid, and the same solvents as in (1); (6) butylated urea-formaldehyde resin, partial poly-ester of glycerol and succinic acid, and the same solvents as in (1); (7) glycerol and sebacic acid are heated to 177 DEG C. until the acid value is 100, and the mass is allowed to cool to 121 DEG C. before mixing with butylated urea-formaldehyde resin in butanol and/or xylene and finally with naphtha and cresylic acid. The compositions may be used for coating wire, and cotton, silk and glass insulating sleeves, and for coating cloth to render it electrically insulating.
GB2860448A 1948-11-03 1948-11-03 Improvements in electrically insulating coating compositions Expired GB657782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2860448A GB657782A (en) 1948-11-03 1948-11-03 Improvements in electrically insulating coating compositions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2860448A GB657782A (en) 1948-11-03 1948-11-03 Improvements in electrically insulating coating compositions

Publications (1)

Publication Number Publication Date
GB657782A true GB657782A (en) 1951-09-26

Family

ID=10278236

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2860448A Expired GB657782A (en) 1948-11-03 1948-11-03 Improvements in electrically insulating coating compositions

Country Status (1)

Country Link
GB (1) GB657782A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105086735A (en) * 2014-12-19 2015-11-25 赵雅珺 Enameled wire insulation varnish

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105086735A (en) * 2014-12-19 2015-11-25 赵雅珺 Enameled wire insulation varnish

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