B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 31/26 (2006.01) B01J 37/03 (2006.01)
Patent
CA 2740556
The present invention relates to a stabilized drying catalyst ('drier') for enhancing or accelerating oxidative air-drying of an alkyd-based composition, comprising an inclusion complex of a cyclodextrin and a metal salt of formula (M x+)k(R k- wherein M is a transition or rare earth metal cation with charge x and R is an anion with charge k. The present invention preserves the catalytic activity of a drier, particularly upon addition to an alkyd composition, thus providing a method for stabilizing the drying time of the alkyd composition. A process for preparing the stabilized drier is also provided.
La présente invention concerne un catalyseur de séchage stabilisé (« siccatif »), destiné à améliorer ou accélérer le séchage oxydatif à lair dune composition à base dalkyde. Le catalyseur de séchage selon linvention comprend un complexe dinclusion dune cyclodextrine et dun sel métallique de formule (Mx+)k(Rk-)x, dans laquelle M est un cation dun métal de transition ou de terres rares ayant une charge x et R est un anion ayant une charge k. La présente invention préserve lactivité catalytique dun siccatif, notamment lors de lajout à une composition dalkyde, permettant ainsi dobtenir un procédé de stabilisation du temps de séchage de la composition dalkyde. Linvention concerne également un procédé de préparation du siccatif stabilisé.
Amiel Pat
Crumblehulme Alison
Lenz Ruben
Ndalamba Pierre W. I.
Peng Loren
Heenan Blaikie Llp
Lorama Inc.
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