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1. (WO1998053023) PHOTOSTIMULABLE FLUORESCENT PIGMENT AND PROCESS FOR PRODUCING THE SAME
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/053023 International Application No.: PCT/JP1998/002194
Publication Date: 26.11.1998 International Filing Date: 19.05.1998
Chapter 2 Demand Filed: 03.07.1998
IPC:
C09K 11/77 (2006.01)
C CHEMISTRY; METALLURGY
09
DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
K
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
11
Luminescent, e.g. electroluminescent, chemiluminescent, materials
08
containing inorganic luminescent materials
77
containing rare earth metals
Applicants:
CITIZEN WATCH CO., LTD. [JP/JP]; 1-1, Nishi-Shinjuku 2-chome Shinjuku-ku Tokyo 163-0428, JP (AllExceptUS)
FUKUSHIMA, Mizue [JP/JP]; JP (UsOnly)
HIRASHIMA, Hiroshi [JP/JP]; JP (UsOnly)
IMAI, Hiroaki [JP/JP]; JP (UsOnly)
OH, Junrok [KR/JP]; JP (UsOnly)
Inventors:
FUKUSHIMA, Mizue; JP
HIRASHIMA, Hiroshi; JP
IMAI, Hiroaki; JP
OH, Junrok; JP
Agent:
ISHIDA, Takashi ; A. Aoki & Associates Toranomon 37 Mori Building 5-1, Toranomon 3-chome Minato-ku Tokyo 105-8423, JP
Priority Data:
PCT/JP97/167119.05.1997JP
Title (EN) PHOTOSTIMULABLE FLUORESCENT PIGMENT AND PROCESS FOR PRODUCING THE SAME
(FR) PIGMENT FLUORESCENT PHOTOSTIMULABLE ET SON PROCEDE DE PRODUCTION
Abstract:
(EN) A photostimulable fluorescent pigment comprising mother crystals and a rare earth element added thereto as a dopant, wherein the mother crystals are derived from starting materials comprising arbitrary combinations of alkoxides, organic acid salts, inorganic acid salts, oxides, and chlorides of metal elements constituting the pigment, and are present essentially in a single phase. Simplified process steps are usable for its production and the obtained fluorescent pigment has a high crystal purity, is free from contamination with impurities, and has a particle diameter which can be easily controlled.
(FR) L'invention concerne un pigment fluorescent photostimulable comprenant des cristaux mères auxquels on a ajouté un élément des terres rares en tant que dopant, dans lequel les cristaux mères sont dérivés de matériaux de départ comprenant des combinaisons arbitraires d'alcoxydes, de sels d'acide organique, de sels d'acide inorganique, d'oxydes et de chlorures d'éléments métalliques constituant le pigment, et sont présents essentiellement sous forme de monophase. Des étapes de traitement simplifié sont utilisables dans sa production et le pigment fluorescent obtenu présente une pureté élevée des cristaux, il est exempt de contamination due à des impuretées et son diamètre particulaire peut être régulé facilement.
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
AU1998072393