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GB923402A - Improvements in or relating to incandescent lamps - Google Patents

Improvements in or relating to incandescent lamps

Info

Publication number
GB923402A
GB923402A GB2850959A GB2850959A GB923402A GB 923402 A GB923402 A GB 923402A GB 2850959 A GB2850959 A GB 2850959A GB 2850959 A GB2850959 A GB 2850959A GB 923402 A GB923402 A GB 923402A
Authority
GB
United Kingdom
Prior art keywords
magnesium carbonate
thermo
substance
hexamethylenetetramine
dolomite
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
GB2850959A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB923402A publication Critical patent/GB923402A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/0066—Use of inorganic compounding ingredients
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
    • 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
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The free space within the cap of an electric incandescent lamp is filled with an insulating foam of a thermo-hardening synthetic substance, for example a thermo-hardened condensate of a resin of the phenolaldehyde type and a filler consisting mainly of magnesium carbonate or a substance containing a considerable amount of magnesium carbonate. Two examples of compositions containing novolac and hexamethylenetetramine with, respectively, magnesium carbonate and dolomite are given. Specification 723,141 is referred to.ALSO:The free space within the cap of an electric incandescent lamp is filled with an insulating foam of a thermo-hardening synthetic substance, for example a thermo-hardened condensate of a resin of the phenolaldehyde type and a filler consisting mainly of magnesium carbonate or a substance containing a considerable amount of magnesium carbonate. Two examples of compositions containing novolae and hexamethylenetetramine with, respectively, magnesium carbonate and dolomite are given. Specification 723,141 is referred to.
GB2850959A 1958-08-23 1959-08-20 Improvements in or relating to incandescent lamps Expired GB923402A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL230786 1958-08-23

Publications (1)

Publication Number Publication Date
GB923402A true GB923402A (en) 1963-04-10

Family

ID=19751319

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2850959A Expired GB923402A (en) 1958-08-23 1959-08-20 Improvements in or relating to incandescent lamps

Country Status (6)

Country Link
BE (1) BE581899A (en)
CH (1) CH373468A (en)
DE (1) DE1146586B (en)
FR (1) FR1232894A (en)
GB (1) GB923402A (en)
NL (1) NL108778C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003014203A1 (en) * 2001-08-06 2003-02-20 Tyco Electronics Corporation Lamp assembly, methods of forming a lamp assembly, adhesive foamable composition and coupling
EP1677332A2 (en) * 2004-12-29 2006-07-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Process for manufacturing a radiation source

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003014203A1 (en) * 2001-08-06 2003-02-20 Tyco Electronics Corporation Lamp assembly, methods of forming a lamp assembly, adhesive foamable composition and coupling
US6650033B2 (en) 2001-08-06 2003-11-18 Tyco Electronics Corporation Foamable coupling for lamp assembly and methods for using the coupling
US7198686B2 (en) 2001-08-06 2007-04-03 Tyco Electronics Corporation Foamable coupling for lamp assembly and methods for using the coupling
US7786205B2 (en) 2001-08-06 2010-08-31 Tyco Electronics Corporation Foamable adhesive composition
EP1677332A2 (en) * 2004-12-29 2006-07-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Process for manufacturing a radiation source
EP1677332A3 (en) * 2004-12-29 2009-12-09 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Process for manufacturing a radiation source

Also Published As

Publication number Publication date
FR1232894A (en) 1960-10-12
NL108778C (en)
BE581899A (en) 1960-02-22
DE1146586B (en) 1963-04-04
CH373468A (en) 1963-11-30

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