GB1442858A - Electrical apparatus comprising closed-cell rigid polymeric foam parts - Google Patents

Electrical apparatus comprising closed-cell rigid polymeric foam parts

Info

Publication number
GB1442858A
GB1442858A GB3429773A GB3429773A GB1442858A GB 1442858 A GB1442858 A GB 1442858A GB 3429773 A GB3429773 A GB 3429773A GB 3429773 A GB3429773 A GB 3429773A GB 1442858 A GB1442858 A GB 1442858A
Authority
GB
United Kingdom
Prior art keywords
electrical apparatus
closed
polymeric foam
rigid polymeric
cell rigid
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
GB3429773A
Other languages
English (en)
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.)
BBC BROWN BOVERI and CIE
BBC Brown Boveri AG Switzerland
Original Assignee
BBC BROWN BOVERI and CIE
BBC Brown Boveri AG Switzerland
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 BBC BROWN BOVERI and CIE, BBC Brown Boveri AG Switzerland filed Critical BBC BROWN BOVERI and CIE
Publication of GB1442858A publication Critical patent/GB1442858A/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
    • H01B3/302—Polyurethanes or polythiourethanes; Polyurea or polythiourea
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/143—Halogen containing compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Physics & Mathematics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Organic Insulating Materials (AREA)
GB3429773A 1972-07-20 1973-07-18 Electrical apparatus comprising closed-cell rigid polymeric foam parts Expired GB1442858A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1083572A CH572269A5 (OSRAM) 1972-07-20 1972-07-20

Publications (1)

Publication Number Publication Date
GB1442858A true GB1442858A (en) 1976-07-14

Family

ID=4367334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3429773A Expired GB1442858A (en) 1972-07-20 1973-07-18 Electrical apparatus comprising closed-cell rigid polymeric foam parts

Country Status (9)

Country Link
JP (1) JPS4945167A (OSRAM)
AT (1) AT322863B (OSRAM)
CA (1) CA1045805A (OSRAM)
CH (1) CH572269A5 (OSRAM)
DE (1) DE2241036A1 (OSRAM)
FR (1) FR2194022B1 (OSRAM)
GB (1) GB1442858A (OSRAM)
IT (1) IT998246B (OSRAM)
NL (1) NL7309974A (OSRAM)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5439947A (en) * 1990-03-23 1995-08-08 E. I. Du Pont De Nemours And Company Polymer foams containing blocking agents
US5489619A (en) * 1991-08-27 1996-02-06 Bp Chemicals Limited Process for producing improved phenolic foams from phenolic resole resins
US5496866A (en) * 1989-02-04 1996-03-05 Bayer Aktiengesellschaft C3 to C5 polyfluoroalkanes propellants
EP0934971A3 (de) * 1998-02-07 2001-01-17 Basf Aktiengesellschaft Verfahren zur Herstellung von PU-Hartschaumstoffen mit kleinen Zelldurchmessern und ihre Verwendung

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH579606A5 (OSRAM) * 1973-06-18 1976-09-15 Bbc Brown Boveri & Cie
CH618041A5 (en) * 1975-06-02 1980-06-30 Bbc Brown Boveri & Cie Mechanically load-bearing, low-temperature withstanding rigid-foam insulating parts of electrical equipment
JPS5232097A (en) * 1975-09-06 1977-03-10 Daikin Ind Ltd Process for preparing thermal insulating materials of polyurethane foa m for low-emperature uses
CA1086450A (en) 1976-02-03 1980-09-23 Kyung W. Suh Styrene polymer foam and preparation thereof
NO149664C (no) 1977-03-30 1984-05-30 Dow Chemical Co Alkenyl-aromatisk, termoplastisk polymer-skumlegeme for isolasjonsformaal, samt fremgangsmaate for fremstilling derav
JPS5482977U (OSRAM) * 1977-11-25 1979-06-12
DE3824354A1 (de) * 1988-07-19 1990-01-25 Basf Ag, 67063 Ludwigshafen Verfahren zur herstellung von zellhaltigen kunststoffen nach dem polyisocyanat-polyadditionsverfahren mittels lagerstabiler, treibmittelhaltiger emulsionen und diese emulsionen
GB9001368D0 (en) * 1990-01-20 1990-03-21 Bp Chem Int Ltd Blowing agents
US4997706A (en) * 1990-02-09 1991-03-05 The Dow Chemical Company Foaming system for closed-cell rigid polymer foam
DE102004008751B4 (de) * 2004-02-23 2008-04-24 Siemens Ag Mittel zur elektrischen Isolierung von Mittel- und Hochspannungskomponenten

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5496866A (en) * 1989-02-04 1996-03-05 Bayer Aktiengesellschaft C3 to C5 polyfluoroalkanes propellants
US5439947A (en) * 1990-03-23 1995-08-08 E. I. Du Pont De Nemours And Company Polymer foams containing blocking agents
US5489619A (en) * 1991-08-27 1996-02-06 Bp Chemicals Limited Process for producing improved phenolic foams from phenolic resole resins
EP0934971A3 (de) * 1998-02-07 2001-01-17 Basf Aktiengesellschaft Verfahren zur Herstellung von PU-Hartschaumstoffen mit kleinen Zelldurchmessern und ihre Verwendung

Also Published As

Publication number Publication date
FR2194022A1 (OSRAM) 1974-02-22
FR2194022B1 (OSRAM) 1980-08-08
AT322863B (de) 1975-06-10
NL7309974A (OSRAM) 1974-01-22
JPS4945167A (OSRAM) 1974-04-30
CH572269A5 (OSRAM) 1976-01-30
DE2241036A1 (de) 1974-02-07
CA1045805A (en) 1979-01-09
IT998246B (it) 1976-01-20

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee