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1. (WO2002024818) OPTICALLY VARIABLE PIGMENTS AND FOILS WITH ENHANCED COLOR SHIFTING PROPERTIES
Dernières données bibliographiques dont dispose le Bureau international   

N° de publication :    WO/2002/024818    N° de la demande internationale :    PCT/US2001/018929
Date de publication : 28.03.2002 Date de dépôt international : 13.06.2001
Demande présentée en vertu du Chapitre 2 :    13.03.2002    
CIB :
B32B 7/02 (2006.01), C09C 1/00 (2006.01)
Déposants : FLEX PRODUCTS, INC. [US/US]; 1402 Mariner Way Santa Rosa, CA 95407 (US)
Inventeurs : LEGALLEE, Charlotte, R.; (US)
Mandataire : SEELEY, David, O.; Workman, Nydegger & Seeley 1000 Eagle Gate Tower 60 East South Temple Salt Lake City, UT 84111 (US)
Données relatives à la priorité :
09/668,629 22.09.2000 US
Titre (EN) OPTICALLY VARIABLE PIGMENTS AND FOILS WITH ENHANCED COLOR SHIFTING PROPERTIES
(FR) OPTICALLY VARIABLE PIGMENTS AND FOILS WITH ENHANCED COLOR SHIFTING PROPERTIES
Abrégé : front page image
(EN)Pigment flakes are provided which can be used to produce colorant compositions having color shifting properties. The pigment flakes can have a symmetrical coating structure on opposing side of a reflector layer, can have a asymmetrical coating structure with all of the layers on one side of the reflector layer, or can be formed with encapsulating coatings around a reflector layer. The coating structure includes a selective absorbing layer on one or more sides of the reflector layer, a dielectric layer on the selective absorbing layer, and an absorber layer on the dielectric layer. The pigment flakes exhibit a discrete color shift such that the pigment flakes have a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing. The pigment flakes can be interspersed into liquid media such as paints or inks for subsequent application to objects or papers. A color shifting foil is also provided which includes the coating structure of reflector/selective absorber/dielectric/absorber.
(FR)Pigment flakes are provided which can be used to produce colorant compositions having color shifting properties. The pigment flakes can have a symmetrical coating structure on opposing side of a reflector layer, can have a asymmetrical coating structure with all of the layers on one side of the reflector layer, or can be formed with encapsulating coatings around a reflector layer. The coating structure includes a selective absorbing layer on one or more sides of the reflector layer, a dielectric layer on the selective absorbing layer, and an absorber layer on the dielectric layer. The pigment flakes exhibit a discrete color shift such that the pigment flakes have a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing. The pigment flakes can be interspersed into liquid media such as paints or inks for subsequent application to objects or papers. A color shifting foil is also provided which includes the coating structure of reflector/selective absorber/dielectric/absorber.
États désignés : CN, JP.
Office européen des brevets (OEB) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR).
Langue de publication : anglais (EN)
Langue de dépôt : anglais (EN)