C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 3/00 (2006.01) C04B 26/20 (2006.01) C08G 69/04 (2006.01) C08G 69/16 (2006.01) C08G 69/18 (2006.01) C08G 69/28 (2006.01) C08K 7/00 (2006.01)
Patent
CA 2388547
The invention relates to a method for the production of a polyamide moulding that contains a filler, wherein a composition which contains at least one monomer suitable for forming a polyamide is allowed to polymerise in a mould in the presence of the filler, characterised in that the composition is fed to the mould under elevated pressure and in that the mould is brought under reduced pressure before the composition is fed in. The method according to the invention results in the production of completely compacted mouldings which are pore-free and gas-tight and have a uniformly distributed matrix. One of the advantages of the invention is that relatively large mouldings can be produced which, inter alia, can be used as a structural element.
La présente invention concerne un procédé de réalisation de moulage de polyamide comprenant un charge, dans laquelle on effectue la polymérisation d'une composition contenant au moins un monomère approprié pour former un polyamide dans un moule en présence d'une charge. Selon l'invention, on alimente la composition dans le moule à une pression élevée and on porte le moule sous pression réduite avant d'y introduire la composition. Le procédé selon l'invention permet d'obtenir des objets moulés entièrement compactés exempts de pores et étanches aux gaz et présentant une matrice présentant une répartition uniforme. Un des avantages de l'invention est que l'on peut produire des objets moulés de grande taille qui, entre autres, peuvent être utilisés en tant qu'éléments de structure.
Caral B.v.
Mccarthy Tetrault Llp
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