Material composition and method for its manufacture

Details Material composition and method for its manufacture Material composition and method for its manufacture

C - Chemistry, Metallurgy

08

L

C08L 83/04 (2006.01) B44C 3/04 (2006.01) C08J 3/24 (2006.01) C08K 3/38 (2006.01) C08K 7/16 (2006.01)

Patent

CA 2660823

A material composition for play or modelling purposes comprises a particulate material (2) and a binder (3) which is disposed as thin layers on the particles. The binder includes a hydroxy-terminated polymer cross-linked by a boron compound, in particular a silicon oil. According to the present invention, the concentration of particles (2) is 90-98 vol% of the finished composition. A method for producing the material composition comprises the steps that the particles (2) are placed in a mixer, that the hydroxyl-terminated polymer, in particular silicon oil, is added and distributed as thin layers on the surfaces of the particles and that thereafter a boron-containing cross-linking agent is added in solution and mixed so that a cross-linking of the polymer takes place and the viscosity increases.

L'invention concerne une composition de matière utilisable à des fins de jeu ou de modelage, comprenant une matière particulaire (2) et un liant (3) lequel est disposé sous forme de couches minces sur les particules. Le liant comprend un polymère terminé par des hydroxy réticulé par un composé de bore, en particulier une huile de silicone. Selon la présente invention, la concentration en particules (2) est de 90-98 % en volume de la composition finie. L'invention concerne également un procédé servant à produire la composition de matière comprenant les étapes consistant à : placer les particules (2) dans un mélangeur; ajouter le polymère terminé par des hydroxy, en particulier une huile de silicone, et le répartir sous forme de couches minces sur la surface des particules; et après cela ajouter à la solution un agent de réticulation contenant du bore et le mélanger de façon à ce qu'une réticulation du polymère ait lieu et à ce que la viscosité augmente.

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