MATERIAUX ELASTIQUES
    51.
    发明公开
    MATERIAUX ELASTIQUES 审中-公开
    柔性材料

    公开(公告)号:EP1848776A1

    公开(公告)日:2007-10-31

    申请号:EP06709330.2

    申请日:2006-02-14

    申请人: ARKEMA France

    IPC分类号: C08L101/02 C08F8/30

    摘要: The invention relates to materials having rubber-like elasticity and comprising molecules with a mass of between 9 and 9000 g/mole, all or part of said molecules having at least three groups (also known as associative groups) that can associate by means of noncovalent interactions. The inventive material, which comprises non-polymerised and non-chemically-crosslinked small molecules, has rubber-like elasticity properties. In one embodiment of the invention, the material has rubber-like elasticity at ambient temperature. Above a certain temperature, the material flows like a simple liquid. The material is thermoreversible, i.e. a material with rubber-like elasticity can be obtained once again by means of cooling. In addition, the invention comprises a self-healing material that is potentially recyclable, which is never the case with a chemically-crosslinked elastomer. According to one embodiment of the invention, the molecules forming the inventive material bear associative groups having formula (1), in which A denotes oxygen, sulphur or NH, whereby the carbon atoms on formula (1) can be substituted. A preferably denotes oxygen. Advantageously, the material comprises (i) molecules having at least 3 associative groups and (ii) molecules having a single associative group. Moreover, the molecules are preferably obtained from fatty acid derivatives.

    MEMOIRE OPTIQUE 3D COMPRENANT DES PARTICULES MULTICOUCHES COMPRENANT UN MONOMERE PHOTOACTIF PORTEUR D'UN GROUPEMENT PHOTOISOMERISABLE
    52.
    发明授权
    MEMOIRE OPTIQUE 3D COMPRENANT DES PARTICULES MULTICOUCHES COMPRENANT UN MONOMERE PHOTOACTIF PORTEUR D'UN GROUPEMENT PHOTOISOMERISABLE 有权
    与WITH FOTOISOMERISIERBARER合影活性单体MULTI-LAYER粒子光学三维记忆

    公开(公告)号:EP2097480B1

    公开(公告)日:2010-08-11

    申请号:EP07858734.2

    申请日:2007-11-26

    申请人: ARKEMA FRANCE

    IPC分类号: C08L33/14

    CPC分类号: G11B7/245 B82Y20/00 B82Y30/00

    摘要: The invention relates to a core-shell-type multilayer particle comprising at least one layer B that comprises at least one photoactive monomer bearing a photoisomerizable chromophore and a rigid shell A. The photoactive monomer has the following formula (I): (I) in which: X denotes H or CH3-; G denotes =O-C(=O)-, -C(=O)-O-, a substituted or unsubstituted phenyl group, or else -NR-C(=O)-, NR being bonded to L and R being H or a C1-C10 alkyl group; L denotes a spacer group; CR denotes a photoisomerizable chromophore. It is possible to use the multilayer particle of the invention to achieve optical storage of 2D data.