Classifications

• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M1/00—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants
  • C10M1/08—Liquid compositions essentially based on mineral lubricating oils or fatty oils; Their use as lubricants with additives
• • 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
  • H01B3/20—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
  • H01B3/22—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils hydrocarbons
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
  • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
  • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
  • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
  • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
  • C10M2215/064—Di- and triaryl amines
  • C10M2215/065—Phenyl-Naphthyl amines
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
  • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
  • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
  • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
  • C10M2215/066—Arylene diamines
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/14—Electric or magnetic purposes
  • C10N2040/16—Dielectric; Insulating oil or insulators
• • C—CHEMISTRY; METALLURGY
  • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
  • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
  • C10N2040/00—Specified use or application for which the lubricating composition is intended
  • C10N2040/14—Electric or magnetic purposes
  • C10N2040/17—Electric or magnetic purposes for electric contacts

Definitions

• the present invention concerns improvements in insulating oils such as, for example, transformer oils, which are mineral oils used in transformers for cooling purposes, usually possessing a flash point over 160 C., having little or no volatility at 100 C. and free from moisture.
• transformer oils which are mineral oils used in transformers for cooling purposes, usually possessing a flash point over 160 C., having little or no volatility at 100 C. and free from moisture.
• Transformer oil functions as a fluid di-electric medium and as a heat transfer fluid and in general any deterioration in the oil occurs slowly and progressively over a large number of years; "Deterioration occurs as a result 5 .of access of oxygento the system and contact of the oil insulant with the constructional materials of the transformer at the relatively high service temperature; Access of oxygen can be limited to some extent by the provision of conservators and the life of the oil insulant in such instances is usually long but in a number of cases and particularly with ventilated transformers severe failure occurs within a relatively short time.
• transformer and other insulating oils of certain aromatic primary amines in combination with an anti-oxidant selected from the group consisting of phenyl-alpha-naphthylamine and phenyl-beta-naphthylamine.
• the aromatic primary amines are those of the general formula wherein R R R and R are similar or dissimilar, are selected'from H and alkyl radicals containing up to 12 carbon atoms, and together do not contain more than 24 carbon atoms, and X is NH or COOH.
• aromatic amines examples include-orphenylene diamine, anthranilic acid and their nuclear substituted alkyl derivatives.
• the anti-oxidant may beeither phenyln-naphthylamine or phenyl-B-naphthylamine.
• the preferred amount of metal deactivator present in i reduces the harmful effect of ,copper but also of other metals, e. g. iron, with Whichthe oil may come into contactduringuse.
• test simulating service conditions in a ventilated transformer consisted in s ubjectinig 200 square centimetres of a copper surface, cleaned according to B. S. 148-1951, to the action of 200 millilitres of oil which is stirred at C. for three days in a thermostatically controlled bath and the amount of copper which dissolved in the insulating oil was determined by the method of Buchwald.
• transformer oil as currently marketed (B. S. 1481951), similar oil after being subjected to further treatments known in this art and transformer oil B. S. 1481951 treated according
• the additive P. B. N. referred to in the tables below is the anti-oxidant phenylp-naphthylamine. All percentages quoted are percentages by weight.
• Type A+0.1% P. B. N I 0. 30 Type A+0.1% P. B. N.+0.02% Tenamene 60 3. 95 Type A+0.1% P. B. N.+0.02% Nonoxol CD 1.10 Type A+0.1% P. B. N .+0.02% ethylene diamine. 1.20 TypeA+0.1% P. B. N.+0.02% anthranilic acid 0 Type A+O.l% P. B. N .+0.02% o-phenylene diam 0 Type A+O.1 P. B. N.+0.0024% Accolube 76 3.
• a new insulating transfotmer oil composition consisting essentially of a mineral transformer oil and: (a) from about 0.001 to about 0.1% by Weight of a compound selected from the group consisting of anthranilic acid and o-phenylene diamine, (b) from about 0.01%. to
• -A new insulating transformer oil composition consisting essentially of a mineral transformer oi'l',”and: (a) a compound selected from the group consisting of anthranili-c acid and o-phenylene dianiine in an amount effective to function as a metal deactivator in the transformer oil, and (b) a compound selected from the group consisting of phenyl-alpha-naphthylamine and phenyl-betanaphthylamine in an amount efiective to fuction as'an anti-oxidant in the transformer oil.

Landscapes

• Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Physics & Mathematics (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Lubricants (AREA)
• Organic Insulating Materials (AREA)
• Anti-Oxidant Or Stabilizer Compositions (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10357445

Family Applications (1)

Country Status (5)

Cited By (4)

Families Citing this family (3)

Citations (6)

Family Cites Families (2)

• 0
  • NL NL99014D patent/NL99014C/xx active
• 1954
  • 1954-03-30 GB GB9328/54A patent/GB772491A/en not_active Expired
• 1955
  • 1955-03-28 US US497391A patent/US2868730A/en not_active Expired - Lifetime
  • 1955-03-29 DE DEM26608A patent/DE961917C/de not_active Expired
  • 1955-03-29 CH CH337889D patent/CH337889A/de unknown

Patent Citations (6)

Also Published As

Similar Documents