MOULDED BODIES CONSISTING OF CORE-SHELL PARTICLES

• Main Authors: DOERR, HARALD, WINKLER, HOLGER, HELLMANN, GOETZ, PETER, VULPIUS, GUENTHER, ANSELMANN, RALF, RUHL, TILMANN
• Format: Patent
• Language: English; French; German
• Published: 27.03.2003
• Edition: 7
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; PREPARATION OF CARBON BLACK; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

Die Erfindung betrifft Formkörper mit optischem Effekt, die im wesentlichen aus Kern-Mantel-Partikeln, deren Mantel eine Matrix bildet und deren Kern im wesentlichen fest ist und eine im wesentlichen monodisperse Grössenverteilung aufweist, bestehen, wobei ein Unterschied zwischen den Brechungsindices des Kernmaterials und des Mantelmaterials besteht. Die Formkörper sind dadurch gekennzeichnet, Dass sie erhältlich sind durch ein Verfahren, bei dem die Kern-Mantel-Partikel auf eine Temperatur erhitzt werden, bei welcher der Mantel fliessfähig ist, und die fliessfähigen Kern-Mantel-Partikel einer mechanischen Krafteinwirkung ausgesetzt werden. 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.