FR2344618A1 - Moisture resistant phosphorescent X:ray reinforcement screens - having phosphorescent halogen contg. particles treated with organo-metallic cpds. - Google Patents

Moisture resistant phosphorescent X:ray reinforcement screens - having phosphorescent halogen contg. particles treated with organo-metallic cpds.

Info

Publication number
FR2344618A1
FR2344618A1 FR7620040A FR7620040A FR2344618A1 FR 2344618 A1 FR2344618 A1 FR 2344618A1 FR 7620040 A FR7620040 A FR 7620040A FR 7620040 A FR7620040 A FR 7620040A FR 2344618 A1 FR2344618 A1 FR 2344618A1
Authority
FR
France
Prior art keywords
phosphorescent
organo
moisture resistant
particles treated
contg
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.)
Granted
Application number
FR7620040A
Other languages
French (fr)
Other versions
FR2344618B1 (en
Inventor
Andre Roger Suys
Willy Karel Van Landeghem
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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
Priority claimed from BE1007476A external-priority patent/BE843479A/en
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of FR2344618A1 publication Critical patent/FR2344618A1/en
Application granted granted Critical
Publication of FR2344618B1 publication Critical patent/FR2344618B1/fr
Granted 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
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/7772—Halogenides
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K4/00—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Halogen-contg. phosphorescent particles are rendered less susceptible to the deleterious effects of moisture by treatment with >=1 organometallic cpd. (I). (I) is pref. applied to the surface of the particles using a suitable binder, (resin e.g. ABS) e.g. by milling the components together in an organic solvent. Process is esp. useful for making phosphorescent X-ray reinforcement screens less sensitive to loss of fluorescing capacity due to the effects of moisture. Suitable (I) are e.g. water insoluble metal carboxylates, tin mercaptides, triphenyl antimony, triphenylbismuth or tetraphtenyltin.
FR7620040A 1976-06-28 1976-06-29 Moisture resistant phosphorescent X:ray reinforcement screens - having phosphorescent halogen contg. particles treated with organo-metallic cpds. Granted FR2344618A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE1007476A BE843479A (en) 1975-08-25 1976-06-28 NON-RETURN VALVE

Publications (2)

Publication Number Publication Date
FR2344618A1 true FR2344618A1 (en) 1977-10-14
FR2344618B1 FR2344618B1 (en) 1979-01-12

Family

ID=3862843

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7620040A Granted FR2344618A1 (en) 1976-06-28 1976-06-29 Moisture resistant phosphorescent X:ray reinforcement screens - having phosphorescent halogen contg. particles treated with organo-metallic cpds.

Country Status (1)

Country Link
FR (1) FR2344618A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000792A1 (en) * 1977-07-20 1979-02-21 Agfa-Gevaert N.V. X-ray image intensifying screens
EP0000961A1 (en) * 1977-08-31 1979-03-07 Agfa-Gevaert N.V. Phosphor-containing compositions and their use in X-ray photography.
EP0003151A1 (en) * 1978-01-16 1979-07-25 Agfa-Gevaert N.V. Improved X-ray image intensifying screens comprising rare earth oxyhalide phosphor particles
FR2422981A1 (en) * 1978-03-22 1979-11-09 Ciba Geigy Ag X-RAY STRENGTHENING SCREEN

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000792A1 (en) * 1977-07-20 1979-02-21 Agfa-Gevaert N.V. X-ray image intensifying screens
EP0000961A1 (en) * 1977-08-31 1979-03-07 Agfa-Gevaert N.V. Phosphor-containing compositions and their use in X-ray photography.
EP0003151A1 (en) * 1978-01-16 1979-07-25 Agfa-Gevaert N.V. Improved X-ray image intensifying screens comprising rare earth oxyhalide phosphor particles
FR2422981A1 (en) * 1978-03-22 1979-11-09 Ciba Geigy Ag X-RAY STRENGTHENING SCREEN

Also Published As

Publication number Publication date
FR2344618B1 (en) 1979-01-12

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Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right
ST Notification of lapse
RC Opposition against decision of lapse
BR Restoration of rights