TY - PAT
T1 - Process for the manufacture of an epoxy-functional polyester, epoxy-functional polyester obtained by such process and coating composition comprising such epoxy-functional polyester
AU - Unthank, Matthew
AU - Jackson, Ian Marchant
AU - Thompson, Barry Gordon
PY - 2018/1/18
Y1 - 2018/1/18
N2 - The present invention relates to a process for the manufacture of an epoxy- functional polyester. The process according to the invention comprises the steps of a)providing a polyester having functional groups selected from hydroxyl groups and carboxylic acid groups, or mixtures thereof, b)reacting the functional groups of the polyester with an epihaloalkane to obtain an epoxy- functional polyester dissolved in a liquid phase, c) optionally adding an organic solvent to the liquid phase obtained in step b); d) precipitating the epoxy- functional polyester from the liquid phase obtained in step b) or in step c); and e) isolating the precipitated epoxy-functional polyester from the liquid phase by a solid-liquid separation technique. The thus obtained resin is in particular useful for use in powder coatings. The invention further relates to a solid epoxy- functional polyester obtainable by such process and to a coating composition, in particular a powder coating composition, comprising such solid epoxy-functional polyester.
AB - The present invention relates to a process for the manufacture of an epoxy- functional polyester. The process according to the invention comprises the steps of a)providing a polyester having functional groups selected from hydroxyl groups and carboxylic acid groups, or mixtures thereof, b)reacting the functional groups of the polyester with an epihaloalkane to obtain an epoxy- functional polyester dissolved in a liquid phase, c) optionally adding an organic solvent to the liquid phase obtained in step b); d) precipitating the epoxy- functional polyester from the liquid phase obtained in step b) or in step c); and e) isolating the precipitated epoxy-functional polyester from the liquid phase by a solid-liquid separation technique. The thus obtained resin is in particular useful for use in powder coatings. The invention further relates to a solid epoxy- functional polyester obtainable by such process and to a coating composition, in particular a powder coating composition, comprising such solid epoxy-functional polyester.
M3 - Patent
M1 - WO2018011103A1
ER -