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Machine translation
1. (WO2009135784) PEARLESCENT PIGMENTS COATED WITH A METAL OXIDE/HYDROXIDE LAYER AND AN ACRYLIC COPOLYMER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2009/135784    International Application No.:    PCT/EP2009/055126
Publication Date: 12.11.2009 International Filing Date: 28.04.2009
IPC:
C09C 1/00 (2006.01)
Applicants: BASF SE [DE/DE]; 67056 Ludwigshafen (DE) (For All Designated States Except US).
BUGNON, Philippe [CH/CH]; (CH) (For US Only).
KARRER, Karin [CH/CH]; (CH) (For US Only).
BUJARD, Patrice [CH/CH]; (CH) (For US Only)
Inventors: BUGNON, Philippe; (CH).
KARRER, Karin; (CH).
BUJARD, Patrice; (CH)
Priority Data:
08155993.2 09.05.2008 EP
Title (EN) PEARLESCENT PIGMENTS COATED WITH A METAL OXIDE/HYDROXIDE LAYER AND AN ACRYLIC COPOLYMER
(FR) PIGMENTS NACRÉS REVÊTUS D’UNE COUCHE D’OXYDE/HYDROXYDE MÉTALLIQUE ET D’UN COPOLYMÈRE ACRYLIQUE
Abstract: front page image
(EN)The invention relates to pearlescent pigments comprising a platelet-shaped substrate, a metal oxide coating comprising a metal oxide layer having a refractive index of greater than 1.8 and a protective layer, wherein the protective layer comprises a metal oxide/hydroxide layer and optionally boroxide, applied to which is an organic aftercoat of an acrylic copolymer, to a method for producing said pigments and the use thereof. The outer layer provides a very good photo-stabilisation of the TiO2 coated platelet-shaped substrates, such as mica, combined with a good water resistance and an anti-yellowing performance.
(FR)La présente invention concerne des pigments nacrés comprenant un substrat en forme de lamelle, un revêtement en oxyde métallique ayant un indice de réfraction supérieur à 1,8 et une couche de protection, la couche de protection comprenant une couche d’oxyde/d’hydroxyde métallique et facultativement un oxyde de bore, sur laquelle est appliquée une couche de copolymère acrylique, un procédé de production desdits pigments et leur utilisation. La couche externe donne une très bonne photo-stabilisation des substrats en forme de lamelle revêtus de TiO2, comme le mica, combinée à une bonne résistance à l’eau et des performances anti-jaunissement.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, 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, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (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, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, 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)