Mouldings made from core/shell particles

Details Mouldings made from core/shell particles Mouldings made from core/shell particles

C - Chemistry, Metallurgy

08

F

C08F 257/00 (2006.01) C08F 257/02 (2006.01) C08F 265/04 (2006.01) C08F 285/00 (2006.01) C08F 291/00 (2006.01) C08F 292/00 (2006.01) C08L 51/00 (2006.01) C08L 51/10 (2006.01)

Patent

CA 2459749

The invention relates to moulded bodies with a decorative optical effect. Said bodies consist of core-shell particles, whose shell forms a matrix and whose core is essentially solid and has a substantially mono-disperse size distribution, whereby the refractive indices of the core material and the shell material are different. The moulded bodies are characterised in that they can be obtained by the following method: the core-shell particles are heated to a temperature, at which the shell is fusible and the fusible core- shell particles are subjected to a mechanical force.

L'invention concerne des corps moulés à effet optique. Ces corps moulés sont principalement constitués de particules noyau-enveloppe dont l'enveloppe constitue une matrice et dont le noyau est essentiellement solide et a une répartition dimensionnelle des granules sensiblement mono-dispersée. Le matériau noyau et le matériau enveloppe ont des indices de réfraction différents. Les corps moulés sont caractérisés en ce qu'ils sont obtenus par un procédé selon lequel les particules noyau-enveloppe sont chauffées à une température à laquelle l'enveloppe est coulante puis les particules noyau-enveloppe coulantes sont soumises à l'action d'une force mécanique.

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