Abstract: A secure document including a first layer having a metal holographic structure forming an arrangement of pixels each including a plurality of sub-pixels of distinct colors and a second layer positioned facing the first layer, the second layer being opaque to at least the visible wavelength spectrum. The first layer includes perforations formed by a first laser beam, the first perforations locally revealing through the holographic structure a number of dark areas in the sub-pixels caused by underlying regions of the second opaque layer such as to form a personalized image starting from the arrangement of pixels combined with the dark areas.

Abstract: A color image is disclosed. The color image comprises: a first layer including a holographic structure forming an arrangement of pixels each including sub-pixels of distinct colors; and color modulation means configured to select the color of the pixels by modifying the colorimetric contribution of the sub-pixels relative to each other in the pixels so as to reveal a customized color image. The color modulation means can comprise: regions of the holographic structure, called destroyed regions, which are locally destroyed by laser; masking means positioned facing the arrangement of pixels to locally mask all or part of the sub-pixels; or amplification means positioned facing the arrangement of pixels to locally amplify the lightness of all or part of the sub-pixels.

Abstract: A method for securing a document (1), and a secure document (1) including a data medium (2) and an optical security component (3). The medium (2) includes a first surface (12) and a second surface (13). The optical component (3) includes an element (21) for generating optical effects and an adhesive element (5) adhering to the first surface (21) of the medium (2). Customization data (16,17,18,19,20) are written on the secure document (1). The secure document (1) also includes an additional sealing component (4) including adhesive element (10) adhering to the second surface (13) of the medium (2), the medium (2) including at least one perforation (14, 15) arranged so that the optical (3) and additional (4) components are bonded to each other through the perforation (14, 15).

Abstract: The invention concerns (aryl)(amino)borane compounds and a method for preparing same. Said compounds are of formula A-BH—NR1R2, wherein: R1 and R2 are selected among linear, branched or cyclic alkyl radicals, and arylalkyl radicals, or R1 and R2 form together an alkylene; and A represents an aromatic or heteroaromatic group optionally polycondensed, or a group selected among the vinyl, dienyl, polyenyl and alkynyl groups, all said groups optionally bearing at least one substituent. The compounds are obtained by a method which consists in preparing an amine-borane R1R2NH.BH3 complex, in transforming it into aminoborane R1R2NBH2 by heating, then in reacting it with an A-X compound wherein X is a leaving group.

Abstract: The invention concerns (aryl)(amino)borane compounds and a method for preparing same. Said compounds are of formula A-BH-NR1R2, wherein: R1 and R2 are selected among linear, branched or cyclic alkyl radicals, and arylalkyl radicals, or R1 and R2 form together an alkylene; and A represents an aromatic or heteroaromatic group optionally polycondensed, or a group selected among the vinyl, dienyl, polyenyl and alkynyl groups, all said groups optionally bearing at least one substituent. The compounds are obtained by a method which consists in preparing an amine-borane R1R2NH.BH3 complex, in transforming it into aminoborane R1R2NBH2 by heating, then in reacting it with an A-X compound wherein X is a leaving group.