GB1494103A - Process for rendering at least part of a surface phosphorescent - Google Patents

Process for rendering at least part of a surface phosphorescent

Info

Publication number
GB1494103A
GB1494103A GB2655677A GB2655677A GB1494103A GB 1494103 A GB1494103 A GB 1494103A GB 2655677 A GB2655677 A GB 2655677A GB 2655677 A GB2655677 A GB 2655677A GB 1494103 A GB1494103 A GB 1494103A
Authority
GB
United Kingdom
Prior art keywords
phosphorescent
sulphonic acid
acid
activator
solutions
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
GB2655677A
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB2655677A priority Critical patent/GB1494103A/en
Publication of GB1494103A publication Critical patent/GB1494103A/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
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/50—Sympathetic, colour changing or similar inks
    • 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

Abstract

1494103 Luminescent compositions and uses thereof POST OFFICE 21 Jan 1975 [25 Jan 1974] 26556/77 Divided out of 1494102 Heading C4 A surface is rendered phosphorescent by applying thereto and curing in situ a solution containing a phosphorescent activator and a soluble precondensate which is capable of forming an insoluble condensate which does not absorb UV radiation at any wavelength at which the phosphorescent activator does, and which is capable of forming an insoluble condensate in the presence of the phosphorescent activator, in the amount used, which is phosphorescent. The preferred solutions are those claimed in parent Specification, viz., using aminoplast precondensates, particularly urea-or melamine-formaldehyde precondensates, and having a pH of 6-9À5. They preferably contain up to 20 vol. per cent of a C 1 -4 alcohol and a sodium carbonate or borate buffer, and have a water-tolerance of 2À0-2À5 ml./ml. Suitable phosphorescent materials are carbazole sulphonic acid, p-aminobenzophenone, alpha-naphthoflavone, 8- amino-1-naphthol-3:6-disulphonic acid, 2-naphthylamine-6-sulphonic acid, p-aminobenzoic acid, terephthalic acid, fluorene sulphonic acid, diphenylene oxide sulphonic acid and 4,4'-dihydroxydiphenyl sulphonic acid. Activators are exemplified. In the examples melamine-formaldehyde solutions of M:F molar ratios approx. 1À3:1 and 1:3 are prepared and mixed with about 2 p.h.r. of sodium carbazole sulphonate or sodium or calcium p-aminobenzoate. The solutions are diluted and used to render paper phosphorescent. Coding applications such as for postage stamps and printing inks such as for jet printers are disclosed.
GB2655677A 1975-01-21 1975-01-21 Process for rendering at least part of a surface phosphorescent Expired GB1494103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2655677A GB1494103A (en) 1975-01-21 1975-01-21 Process for rendering at least part of a surface phosphorescent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2655677A GB1494103A (en) 1975-01-21 1975-01-21 Process for rendering at least part of a surface phosphorescent

Publications (1)

Publication Number Publication Date
GB1494103A true GB1494103A (en) 1977-12-07

Family

ID=10245500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2655677A Expired GB1494103A (en) 1975-01-21 1975-01-21 Process for rendering at least part of a surface phosphorescent

Country Status (1)

Country Link
GB (1) GB1494103A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500116A (en) * 1978-01-18 1985-02-19 The Post Office Identification matter
DE3514852A1 (en) * 1985-04-24 1986-10-30 GAO Gesellschaft für Automation und Organisation mbH, 8000 München Stamps, such as postage stamps, and method for their manufacture
EP0325825A1 (en) * 1981-11-23 1989-08-02 The Post Office Phosphorescent materials
US5100580A (en) * 1981-11-23 1992-03-31 The Post Office Phosphorescent materials
US5267754A (en) * 1985-04-24 1993-12-07 Gao Gesellschaft Fuer Automation Und Organisation Mbh Stamp such as a postage stamp and a method for producing it
WO1998003596A1 (en) * 1996-07-18 1998-01-29 The Post Office Luminescing inks and use of such inks in coding and other marking operations
ES2124202A1 (en) * 1997-07-15 1999-01-16 Keylink Gestao E Investimentos Process for the preparation of coated continuous sheets to be printed by impact-free heat printers, and sheet thus obtained

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500116A (en) * 1978-01-18 1985-02-19 The Post Office Identification matter
EP0325825A1 (en) * 1981-11-23 1989-08-02 The Post Office Phosphorescent materials
US5100580A (en) * 1981-11-23 1992-03-31 The Post Office Phosphorescent materials
DE3514852A1 (en) * 1985-04-24 1986-10-30 GAO Gesellschaft für Automation und Organisation mbH, 8000 München Stamps, such as postage stamps, and method for their manufacture
US5149139A (en) * 1985-04-24 1992-09-22 Gao Gesellschaft Fur Automation Und Organisation Mbh Stamp such as a postage stamp and a method for producing it
US5267754A (en) * 1985-04-24 1993-12-07 Gao Gesellschaft Fuer Automation Und Organisation Mbh Stamp such as a postage stamp and a method for producing it
WO1998003596A1 (en) * 1996-07-18 1998-01-29 The Post Office Luminescing inks and use of such inks in coding and other marking operations
ES2124202A1 (en) * 1997-07-15 1999-01-16 Keylink Gestao E Investimentos Process for the preparation of coated continuous sheets to be printed by impact-free heat printers, and sheet thus obtained
WO1999003687A1 (en) * 1997-07-15 1999-01-28 Keylink Gestao E Investimentos Lda Process for the preparation of coated continuous sheets to be printed by impact-free heat printers, and sheet thus obtained
US6391824B1 (en) 1997-07-15 2002-05-21 Keylink Gestao E Investimentos Lda. Process for the preparation of coated continuous sheets to be printed by impact-free heat printers, and sheet thus obtained

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940121