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1. (WO2012119306) Method for Producing White Anodized Aluminum Oxide
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/119306    International Application No.:    PCT/CN2011/071616
Publication Date: 13.09.2012 International Filing Date: 08.03.2011
IPC:
C25D 11/14 (2006.01), C25D 11/04 (2006.01), C25D 11/02 (2006.01)
Applicants: NANO AND ADVANCED MATERIALS INSTITUTE LIMITED [CN/CN]; Room 3648, The Hong Kong Jockey Club Enterprise Center The Hong Kong University of Science And Technology Clear Water Bay, Kowloon Hong Kong (CN) (For All Designated States Except US).
MIAO, Jianying [CN/CN]; (CN) (For US Only).
LAM, Un Teng [NZ/CN]; (CN) (For US Only).
AU, Richard Hon Wai [CN/CN]; (CN) (For US Only).
LIANG, Ying [CN/CN]; (CN) (For US Only).
YIM, Man Ho [CN/CN]; (CN) (For US Only)
Inventors: MIAO, Jianying; (CN).
LAM, Un Teng; (CN).
AU, Richard Hon Wai; (CN).
LIANG, Ying; (CN).
YIM, Man Ho; (CN)
Agent: CHINA PAT INTELLECTUAL PROPERTY OFFICE; 2nd Floor, Zhongguancun Intellectual Property Building Block B, No.21 Haidian South Road, Haidian Beijing 100080 (CN)
Priority Data:
Title (EN) Method for Producing White Anodized Aluminum Oxide
(FR) PROCÉDÉ DE PRODUCTION D'OXYDE D'ALUMINIUM ANODISÉ BLANC
Abstract: front page image
(EN)A method for forming substantially white anodized aluminum oxide on an aluminum or aluminum alloy substrate is provided. A porous aluminum oxide layer is formed on the aluminum or aluminum alloy substrate by anodization in an acid electrolyte. Following formation of the anodized porous layer of aluminum oxide, the aluminum/aluminum alloy substrate is sequentially immersed in at least two reaction material solutions. The two or more reaction materials react to deposit a substantially white pigment material in the pores of the anodized aluminum oxide.
(FR)L'invention concerne un procédé de formation d'oxyde d'aluminium anodisé sensiblement blanc sur un substrat d'aluminium ou d'alliage d'aluminium. Une couche poreuse d'oxyde d'aluminium est formée sur le substrat d'aluminium ou d'alliage d'aluminium par anodisation dans un électrolyte acide. Après la formation de la couche poreuse anodisée d'oxyde d'aluminium, le substrat d'aluminium ou d'alliage d'aluminium est plongé séquentiellement dans au moins deux solutions de matière de réaction. Les deux ou plusieurs matières de réaction réagissent de façon à déposer une matière pigmentaire sensiblement blanche dans les pores de l'oxyde d'aluminium anodisé.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, 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 (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, 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)