ES470687A1 - Heat detective composition - Google Patents

Heat detective composition

Info

Publication number
ES470687A1
ES470687A1 ES470687A ES470687A ES470687A1 ES 470687 A1 ES470687 A1 ES 470687A1 ES 470687 A ES470687 A ES 470687A ES 470687 A ES470687 A ES 470687A ES 470687 A1 ES470687 A1 ES 470687A1
Authority
ES
Spain
Prior art keywords
polyfluorinated
cpd
degrees
formula
heat
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
ES470687A
Other languages
Spanish (es)
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
Priority claimed from US05/876,520 external-priority patent/US4204428A/en
Application filed by General Electric Co filed Critical General Electric Co
Publication of ES470687A1 publication Critical patent/ES470687A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/26—Thermosensitive paints
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
    • G01K11/16—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance of organic materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paints Or Removers (AREA)
  • Organic Insulating Materials (AREA)

Abstract

Heat-degradeable coating compsn. comprises an organic resin (I) with thermal decomposition temp. 250 degrees C, and 0.01-0.5% of a chemical marker (II). (II) is an aromatic polychlorinated or polyfluorinated cpd. or an aliphatic polyfluorinated cpd. with decomposition temp. >100 degrees C over that of (I) and volatility range comparable to that of 24-25C paraffins. Pref. (II) includes cpds. of formula (IIa). In the formula X is F or Ce R and R1 are each 1-23C alkyl (total 12-24C), 6-20C cycloalkyl or together are -(CH2)yQ(CH2)2. Completing a heterocycle. Q is O, S or SO2 and y and z are 1-23, together being 12-24. (I) is esp. an epoxy or alkyd resin. Used for detecting overheating in electrical equipment. Smoke released by overheating is collected, solvent-extracted, then analysed by gas chromatography to identify (II). (II) can be detected by electron-capture of microconlometric detector at extremely low concns. Different compsns. can be applied to different parts of the appts. and the location of the fault identified by the partic. (II) released.
ES470687A 1977-06-15 1978-06-09 Heat detective composition Expired ES470687A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US80660077A 1977-06-15 1977-06-15
US80706777A 1977-06-16 1977-06-16
US86914078A 1978-01-13 1978-01-13
US05/876,520 US4204428A (en) 1977-06-15 1978-02-09 Thermal detection system for failure in electrical apparatus and thermal detecting paint compositions

Publications (1)

Publication Number Publication Date
ES470687A1 true ES470687A1 (en) 1979-09-01

Family

ID=27505828

Family Applications (1)

Application Number Title Priority Date Filing Date
ES470687A Expired ES470687A1 (en) 1977-06-15 1978-06-09 Heat detective composition

Country Status (4)

Country Link
JP (1) JPS5439444A (en)
DE (1) DE2825272C2 (en)
ES (1) ES470687A1 (en)
IT (1) IT1096733B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111473885A (en) * 2020-04-10 2020-07-31 西安交通大学 Method for monitoring overheating of electric contact part

Also Published As

Publication number Publication date
IT1096733B (en) 1985-08-26
DE2825272C2 (en) 1982-05-13
DE2825272A1 (en) 1979-01-04
JPS5439444A (en) 1979-03-26
IT7824528A0 (en) 1978-06-13

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