GB646676A - Improvements in the manufacture of low-pressure mercury vapour lamps comprising a vitreous envelope internally coated with a fluorescent powder - Google Patents

Improvements in the manufacture of low-pressure mercury vapour lamps comprising a vitreous envelope internally coated with a fluorescent powder

Info

Publication number
GB646676A
GB646676A GB2785748A GB2785748A GB646676A GB 646676 A GB646676 A GB 646676A GB 2785748 A GB2785748 A GB 2785748A GB 2785748 A GB2785748 A GB 2785748A GB 646676 A GB646676 A GB 646676A
Authority
GB
United Kingdom
Prior art keywords
fluorescent powder
manufacture
low
pressure mercury
mercury vapour
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
GB2785748A
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.)
EK Cole Ltd
Original Assignee
EK Cole 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 EK Cole Ltd filed Critical EK Cole Ltd
Priority to GB2785748A priority Critical patent/GB646676A/en
Publication of GB646676A publication Critical patent/GB646676A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Luminescent Compositions (AREA)

Abstract

646,676. Fluorescent coatings. COLE, Ltd., E. K., and EVANS, J. N. I. Oct. 27, 1948, No. 27857. [Class 39 (i)] A small quantity of triethanolamine N(C 2 H 4 OH) 3 is added to a solution of ammonium alginate containing suspended fluorescent powder to improve the adhesion of the fluorescent powder to the vitreous envelope of fluorescent lamps. The fluorescent powder may consist of magnesium tungstate and zincberyllium - magnesium - manganese silicate. Preferred quantities are quoted. Specifications 560,544 and 639,330 are referred to.
GB2785748A 1948-10-27 1948-10-27 Improvements in the manufacture of low-pressure mercury vapour lamps comprising a vitreous envelope internally coated with a fluorescent powder Expired GB646676A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2785748A GB646676A (en) 1948-10-27 1948-10-27 Improvements in the manufacture of low-pressure mercury vapour lamps comprising a vitreous envelope internally coated with a fluorescent powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2785748A GB646676A (en) 1948-10-27 1948-10-27 Improvements in the manufacture of low-pressure mercury vapour lamps comprising a vitreous envelope internally coated with a fluorescent powder

Publications (1)

Publication Number Publication Date
GB646676A true GB646676A (en) 1950-11-29

Family

ID=10266444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2785748A Expired GB646676A (en) 1948-10-27 1948-10-27 Improvements in the manufacture of low-pressure mercury vapour lamps comprising a vitreous envelope internally coated with a fluorescent powder

Country Status (1)

Country Link
GB (1) GB646676A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327970A1 (en) * 1975-10-17 1977-05-13 Philips Nv PROCESS FOR APPLYING LUMINESCENT MATERIAL ON A GLASS SUPPORT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2327970A1 (en) * 1975-10-17 1977-05-13 Philips Nv PROCESS FOR APPLYING LUMINESCENT MATERIAL ON A GLASS SUPPORT

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