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
• • 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
  • C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
  • C10M2205/18—Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras
• • 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
  • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
• • 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
  • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
  • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
• • 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
  • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
  • C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• • 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
• • 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
  • C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
  • C10N2060/04—Oxidation, e.g. ozonisation

Definitions

• Mineral oil which consists substantially of aliphatic and carbocyclic compounds, has many advantageous properties, but even after subjection to the most approved refining treatment is subject to slow chemical changes under the environmental conditions occurring in electrical apparatus.
• mineral transformer oil is subject to the formation of a sludge which impedes the circulation of the oil.
• an increase of energy loss (rise of power factor) progressively occurs with elapsed time, the change being especially marked at elevated temperatures.
• compositions embodying my present invention should be distinguished from mineral oil compositions containing rosin, in which the content of rosin is relatively high, that is, in excess of 10 per cent by weight.
• the function of such relatively large rosin addition has been to increase the viscosity and tackiness of the oil, for special uses requiring viscous material.
• Such relatively large additions of rosin do not produce the advantageous properties characterizing the present compositions.
• Illustrative of the benefits of my invention is the improvement in power factor effected in high voltage' cables and capacitors containing paper spacers which are impregnated with mineral oil containing rosin, or other tree resin.
• the operation of such capacitors and cables when rosin is not present is accompanied by a rise in power factor, the rise being particularly marked when the capacitors or cables are elevated above ordinary room temperature under oxidizing conditions. when, however, about five-tenths per cent by weight of rosin, or equivalent tree resin, is dissolved in the mineral oil, capacitors or cables otherwise similar, impregnated with such solution, continue to operate without rise of power factor.
• compositions of mineral oil and less than three per cent rosin have substantially the same viscosity as the unmodified oil. No evidence of increased tackiness is observable. However, the formation of sludge, which will thicken oil in which it forms, is decreased by the presence of the rosin, or the like, in the specified small amounts.
• the mineral oil is stabilized, that is, made more resistant to chemical changes, and in particular is made less subject to sludge formation.
• mineral oil having the following physical properties, although I wish it to be understood that this oil is identified merely by way of illustration:
• Flash point Not less than 130 C. Burn point Not less than 140 C. Viscosity (37.8 C.) Not less than 50 seconds Saybolt Universal Specific gravity Approximately .875 Pour point -40 C., or lower Color Not greater than 2,
• a composition of matter comprising as essential ingredients mineral oil and a wood resin, the proportion of the wood resin by weight being within the limits of about one-tenth to three per cent of the mineral oil.
• a composition of matter comprising as essential ingredients mineral oil and a wood resin, the proportion of the wood resin by weight being about one-half per cent based on the weight of the mineral oil.
• a dielectric and insulating material consisting essentially of hydrocarbon oil and containing a fraction of one per cent by weight of rosin.
• a dielectric material for cables and capacitors comprising paper impregnated with mineral oil containing about one-tenth to three per cent by weight of a tree resin.
• a dielectric material for cables and capacitors comprising paper impregnated with mineral oil containing about five-tenths per cent. by weight of rosin.

Landscapes

• Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Physics & Mathematics (AREA)
• Spectroscopy & Molecular Physics (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Organic Insulating Materials (AREA)

Priority Applications (2)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22813497

Family Applications (1)

Country Status (2)

Cited By (3)

• 1938
  • 1938-07-07 US US218039A patent/US2191338A/en not_active Expired - Lifetime
• 1939
  • 1939-07-06 FR FR857431D patent/FR857431A/fr not_active Expired

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