Stabilized drier for alkyd-based compositions

摘要

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 (Mx+)k(Rk−)χ, 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.

主权项

1. A stabilized drier for an oxidatively air-drying alkyd based composition, the stabilized drier comprising a solid inclusion complex of a cyclodextrin and a metal salt of formula (I):
(Mx+)k(Rk−)x  (I) wherein M is a cation of a metal, with charge x, and R is an anion with charge k, wherein said anion is selected from the group consisting of nitrates, sulfates, phosphates, oxalates, salicylates, carboxylates, naphthenates, an anion of ethylenediaminetetraacetic acid, an anion of diethylenetriaminepentaacetic acid, an anion of nitrilotriacetic acid, amino acids, perchlorates, borates, octoates, resinates, neodecanoates, tallates and linoleates, wherein the inclusion complex is isolated from a hydrophilic environment, and wherein said inclusion complex is adapted to stabilize drying time of an oxidatively air-drying alkyd-based composition.