GB474297A - Improvements in or relating to the manufacture of luminescent materials and to means for illumination comprising them - Google Patents

Improvements in or relating to the manufacture of luminescent materials and to means for illumination comprising them

Info

Publication number
GB474297A
GB474297A GB1206636A GB1206636A GB474297A GB 474297 A GB474297 A GB 474297A GB 1206636 A GB1206636 A GB 1206636A GB 1206636 A GB1206636 A GB 1206636A GB 474297 A GB474297 A GB 474297A
Authority
GB
United Kingdom
Prior art keywords
dye
resin
class
luminescent materials
resins
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
GB1206636A
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 PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1206636A priority Critical patent/GB474297A/en
Publication of GB474297A publication Critical patent/GB474297A/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
    • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

474,297. Luminescent materials associated with electric discharge devices. GENERAL ELECTRIC CO., Ltd., McKEAG, A. H., and RANDALL, J. T. April 28, 1936, No. 12066. [Class 98 (i)] The luminescence and light-fastness of a rhodamine dye dispersed in a resinous binder are improved by mixing the solid dye with a molten resin in the absence of any solvent adapted to dissolve both the dye and the resin. Resins of the glycerine-phthalic anhydride and formaldehyde-urea types may be used. Resins sold under the Registered Trade Mark "Paralac," and particularly Nos. 1001, 1101 and 1201 are preferred. The dye/resin ratio is 1 : 100 or 1 : 200. When such materials are used with a high pressure metal vapour lamp, they are applied to surfaces other than the envelope of the discharge (e.g. to a reflector fitting), preferably in the molten state, the receptive surface being heated to about 200‹ C. Reference is made to a known method in which phosphorescent or luminous salts are mixed with powdered resin and moulded under heat and pressure ; and also to the process disclosed in Specification 16519/15, [Class 95].
GB1206636A 1936-04-28 1936-04-28 Improvements in or relating to the manufacture of luminescent materials and to means for illumination comprising them Expired GB474297A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1206636A GB474297A (en) 1936-04-28 1936-04-28 Improvements in or relating to the manufacture of luminescent materials and to means for illumination comprising them

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1206636A GB474297A (en) 1936-04-28 1936-04-28 Improvements in or relating to the manufacture of luminescent materials and to means for illumination comprising them

Publications (1)

Publication Number Publication Date
GB474297A true GB474297A (en) 1937-10-28

Family

ID=9997809

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1206636A Expired GB474297A (en) 1936-04-28 1936-04-28 Improvements in or relating to the manufacture of luminescent materials and to means for illumination comprising them

Country Status (1)

Country Link
GB (1) GB474297A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10957827B2 (en) 2004-05-07 2021-03-23 Bruce H. Baretz Light emitting diode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10957827B2 (en) 2004-05-07 2021-03-23 Bruce H. Baretz Light emitting diode
US11158768B2 (en) 2004-05-07 2021-10-26 Bruce H. Baretz Vacuum light emitting diode

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