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1. (WO2007009145) CERIA BASED GLASS POLISHING COMPOSITION AND A PROCESS FOR THE MANUFACTURE THEREOF
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/009145 International Application No.: PCT/AT2006/000306
Publication Date: 25.01.2007 International Filing Date: 19.07.2006
Chapter 2 Demand Filed: 04.05.2007
IPC:
C01F 17/00 (2006.01) ,C09K 3/14 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
17
Compounds of the rare-earth metals, i.e. scandium, yttrium, lanthanum, or the group of the lanthanides
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
3
Materials not provided for elsewhere
14
Anti-slip materials; Abrasives
Applicants:
TREIBACHER INDUSTRIE AG [AT/AT]; Auer von Welsbach-Strasse 1 A-9330 Treibach-Althofen, AT (AllExceptUS)
SCHERMANZ, Karl [AT/AT]; AT (UsOnly)
SCHÖNFELDER, Johann [AT/AT]; AT (UsOnly)
Inventors:
SCHERMANZ, Karl; AT
SCHÖNFELDER, Johann; AT
Agent:
SCHWARZ, Albin ; Wipplingerstrasse 32 A-1010 Wien, AT
Priority Data:
A 1223/200520.07.2005AT
Title (EN) CERIA BASED GLASS POLISHING COMPOSITION AND A PROCESS FOR THE MANUFACTURE THEREOF
(FR) COMPOSITION DE POLISSAGE DU VERRE A BASE D'OXYDE DE CERIUM ET PROCEDE DE FABRICATION AFFERENT
Abstract:
(EN) The invention is directed to a process for the manufacture of a ceria based polishing composition, comprising (a) suspending an inorganic cerium salt or cerium hydroxide with a cerium content calculated as cerium oxide in the range of 50%-100% based on Total rare earth oxide (TREO) in an aqueous medium thereby obtaining an aqueous suspension, (b) treating said aqueous suspension with an acid or a salt of an acid selected from the group of HF, H3PO4 and H2SO4, thereby obtaining a solid suspended in said aqueous medium, (c) separating said solid from said aqueous medium, and (d) calcining the separated solid at a temperature between 750°C and 1,2000C and grinding the calcined solid to grain sizes in the range of 0.5 μm to 5.0 μm.
(FR) L'invention porte sur un procédé de fabrication d'une composition de polissage à base d'oxyde de cérium, ledit procédé consistant à (a) mettre en suspension un sel de sérium ou un hydroxyde de cérium inorganiques avec une concentration de cérium calculée en fonction de l'oxyde cérium compris entre 50 % et 100 % basé sur l'oxyde de terres rares total (OTRT), dans un milieu aqueux, de manière à obtenir une suspension aqueuse, (b) à traiter ladite suspension aqueuse avec un acide ou un sel d'un acide sélectionné dans le groupe HF, H3PO4 et H2SO4, de manière à obtenir un solide en suspension dans ledit milieu aqueux, (c) à séparer ledit solide dudit milieu aqueux, et (d) à calciner le solide séparé à une température comprise entre 750 °C et 1200 °C et à meuler le solide calciné en grosseurs de grain comprises entre 0.5 µm et 5.0 µm.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP1917214JP2009501812US20080307712RU0002414427CN101268016IN493/DELNP/2008