C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/36 (2006.01) B32B 27/36 (2006.01) C08L 51/08 (2006.01) C09D 167/06 (2006.01)
Patent
CA 2285249
An article comprising a core or layer of a foamed material and at least one layer of an unsaturated polyester resin characterized in that the layer polyester is obtained from a polyester resin composition comprising an unsaturated polyester and a monomeric solvent reactive with said polyester, wherein the monomeric solvent comprises styrene and hydroxyalkyl acrylate or methacrylate wherein alkyl is C1-4 and wherein the amounts of styrene, hydroxyalkyl (meth)acrylate and unsaturated polyester in said composition comply with the following equation (I) in parts by weight: styrene (parts by weight)/polyester (parts by weight) + hydroxyalkyl(meth)acrylate (parts by weight) = 0.12 to 0.18. A process for preparing such article is also disclosed.
L'invention porte sur un article comprenant une âme ou couche de matériau expansé et au moins une couche d'une résine de polyester insaturé. La couche de polyester est obtenue à partir d'une composition de résine de polyester comprenant un polyester insaturé et un solvant monomère réagissant au polyester. Ce solvant monomère comprend un styrène et un acrylate ou méthacrylate hydroxyalkyle, alkyle possédant C¿1?-C¿4?, et les quantités de styrène, de (méth)acrylate hydroxyalkyle et de polyester insaturé de cette composition étant conformes à l'équation (I) en partie en poids: styrène (parties en poids)/polyester (parties en poids) + (méth)acrylate hydroxyalkyle (parties en poids) = 0,12 à 0,18. L'invention porte également sur un procédé de fabrication de cet article.
Marzio Ligutti
Montecchi Massimo
Smart & Biggar
The Dow Chemical Company
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