GB572771A - Improvements in the production of fluorescent materials - Google Patents

Improvements in the production of fluorescent materials

Info

Publication number
GB572771A
GB572771A GB190243A GB190243A GB572771A GB 572771 A GB572771 A GB 572771A GB 190243 A GB190243 A GB 190243A GB 190243 A GB190243 A GB 190243A GB 572771 A GB572771 A GB 572771A
Authority
GB
United Kingdom
Prior art keywords
lead
production
fluorescent materials
ziroonium
serium
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
GB190243A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB190243A priority Critical patent/GB572771A/en
Publication of GB572771A publication Critical patent/GB572771A/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
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/0838—Aluminates; Silicates

Abstract

572,771. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Feb. 4, 1943, No. 1902. [Class 39 (i)] A luminescent material comprises an alkaline earth silicate activated by either lead, thallium, bismuth, thorium, tantalum, tin, ziroonium, titanium, uranium, neodymium, samarium, serium, gadolinium, or scandium. In an example, calcium oxide and silica in equimolecular proportions are mixed and ground with enough lead acetate to give about one per cent by weight of lead to the other constituents. The resulting mixture is fired at 1100‹ C. for one hour. The phosphor may be added in a powdered state to the interior surface of an electric discharge lamp.
GB190243A 1943-02-04 1943-02-04 Improvements in the production of fluorescent materials Expired GB572771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB190243A GB572771A (en) 1943-02-04 1943-02-04 Improvements in the production of fluorescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190243A GB572771A (en) 1943-02-04 1943-02-04 Improvements in the production of fluorescent materials

Publications (1)

Publication Number Publication Date
GB572771A true GB572771A (en) 1945-10-23

Family

ID=9730033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190243A Expired GB572771A (en) 1943-02-04 1943-02-04 Improvements in the production of fluorescent materials

Country Status (1)

Country Link
GB (1) GB572771A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467810A (en) * 1947-06-17 1949-04-19 Sylvania Electric Prod Barium magnesium lead silicate phosphor
US2486112A (en) * 1948-03-13 1949-10-25 Sylvania Electric Prod Barium strontium lead silicate phosphor
US2499307A (en) * 1946-01-03 1950-02-28 Sylvania Electric Prod Barium di-silicate phosphor
US2587592A (en) * 1947-02-01 1952-03-04 Sylvania Electric Prod Barium mesotrisilicate phosphor
US2868733A (en) * 1955-07-08 1959-01-13 Philips Corp Luminescent material
DE1076290B (en) * 1955-05-10 1960-02-25 Philips Nv Process for producing an ultraviolet luminous silicate
US2965579A (en) * 1955-05-10 1960-12-20 Philips Corp Method of producing ultra-violet luminescing silicates
US2966463A (en) * 1959-03-11 1960-12-27 Sylvania Electric Prod Calcium silicate phosphor
US3014876A (en) * 1959-05-04 1961-12-26 Sylvania Electric Prod Calcium silicate phosphors
US3063946A (en) * 1959-05-04 1962-11-13 Sylvania Electric Prod Tin-activated calcium silicate phosphor
DE1145287B (en) * 1954-12-23 1963-03-14 Philips Nv Process for the production of ultraviolet-luminescent alkaline earth silicates
US3260675A (en) * 1964-07-01 1966-07-12 Westinghouse Electric Corp Calcium and magnesium silicate phosphors with activator comprising terbium
DE1278648B (en) * 1954-06-02 1968-09-26 Philips Nv Process for the production of a silicate emitting in the erythema area
US4566987A (en) * 1982-06-16 1986-01-28 Schott-Glaswerke Scintillation glass

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2499307A (en) * 1946-01-03 1950-02-28 Sylvania Electric Prod Barium di-silicate phosphor
US2587592A (en) * 1947-02-01 1952-03-04 Sylvania Electric Prod Barium mesotrisilicate phosphor
US2467810A (en) * 1947-06-17 1949-04-19 Sylvania Electric Prod Barium magnesium lead silicate phosphor
US2486112A (en) * 1948-03-13 1949-10-25 Sylvania Electric Prod Barium strontium lead silicate phosphor
DE1278648B (en) * 1954-06-02 1968-09-26 Philips Nv Process for the production of a silicate emitting in the erythema area
DE1145287B (en) * 1954-12-23 1963-03-14 Philips Nv Process for the production of ultraviolet-luminescent alkaline earth silicates
US2965579A (en) * 1955-05-10 1960-12-20 Philips Corp Method of producing ultra-violet luminescing silicates
DE1076290B (en) * 1955-05-10 1960-02-25 Philips Nv Process for producing an ultraviolet luminous silicate
US2868733A (en) * 1955-07-08 1959-01-13 Philips Corp Luminescent material
US2966463A (en) * 1959-03-11 1960-12-27 Sylvania Electric Prod Calcium silicate phosphor
US3014876A (en) * 1959-05-04 1961-12-26 Sylvania Electric Prod Calcium silicate phosphors
US3063946A (en) * 1959-05-04 1962-11-13 Sylvania Electric Prod Tin-activated calcium silicate phosphor
US3260675A (en) * 1964-07-01 1966-07-12 Westinghouse Electric Corp Calcium and magnesium silicate phosphors with activator comprising terbium
US4566987A (en) * 1982-06-16 1986-01-28 Schott-Glaswerke Scintillation glass

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