Moulding compositions for the production of sanitary-ware...

Details Moulding compositions for the production of sanitary-ware... Moulding compositions for the production of sanitary-ware...

C - Chemistry, Metallurgy

08

L

C08L 33/12 (2006.01) C08K 7/22 (2006.01)

Patent

CA 2323679

The aim of the invention is to provide a casting material for producing shaped parts with not only one, but two or more visible faces. To this end, the inventive casting material comprises a methyl methacrylate- based syrup and up to 85 % (in relation to the casting material) of an inorganic filler and contains deformable hollow microspheres which are filled with an expanding agent and have a plastic wall which is essentially insoluble in methylmethacrylate. The proportion by volume of the hollow microspheres in the overall volume of the casting material is 5 to 50 vol.%.

L'objectif de l'invention est de mettre à disposition une matière à couler qui permette la formation de corps moulés présentant non seulement une face visible, mais deux ou plusieurs faces visibles. A cet effet, il est proposé que cette matière à couler contienne un sirop à base de méthacrylate de méthyle et jusqu'à 85 % d'une matière de charge inorganique, par rapport à la matière à couler, et que cette matière à couler comprenne des microsphères creuses remplies d'un agent de gonflage et présentant une paroi en matière plastique sensiblement insoluble dans le méthacrylate de méthyle, la proportion en volume des microsphères creuses, par rapport au volume total de la matière à couler, étant comprise dans la plage 5-50 %.

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