Back to results
US 5,703,198 AGranted
Radiation curable binder composition for powder paint formulations
AssigneeDsm N.V.
InventorsFreddy Twigt, Robert Van Der Linde
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeDsm N.V.
InventorsFreddy Twigt, Robert Van Der Linde
Estimating the term…
The invention relates to a radiation curable binder composition for powder paint formulations. The binder composition comprises a) a polymer having a degree of unsaturation between 300 and 1800 grams per mole of unsaturated group (WPU), having a molecular weight Mn between 800 and 6800 and a viscosity between 1 dPas and 800 dPas and b) a crosslinking agent having vinyl ether, vinyl ester or (meth)acrylate functional groups. The polymer is an unsaturated polyester and/or an unsaturated polyacrylate. The binder composition can be used in the preparation of powder paint formulations which can be applied to heat-sensitive substrates such as wood and plastic and which can be cured with UV or electron beam radiation.
A powder paint containing a radiation curable binder composition for powder paint formulations comprising:
A powder paint composition which comprises solid particles of a UV or EB radiation-curable binder comprised of (a) a polymer having unsaturated groups wherein said polymer has a degree of unsaturation between about 300 grams and about 1,800 grams of polymer per mole of unsaturated group, a molecular weight (Mn) between about 2500 and 4500 g/mol, and a viscosity between 1 dPas and 350 dPas, and (b) a crosslinking agent having at least two functional groups selected from the group consisting of vinyl ether, vinyl ester, and (meth)acrylate functional groups.
Dependencies are inferred from the claim text.