Binder composition for powder coatings
AssigneeDsm N.V.
InventorsTosko A. Misev, Eimbert G. Belder, Fokeltje A. Koldijk
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Abstract
The invention relates to a binder composition for powder coatings. The binder composition is substantially based on a mixture of an unsaturated polyester and an oligomer having a plurality of allyl groups and further having at least either ether and ester groups or urethane and optionally ether groups. The oligmer is preferably an allyl ether ester being more preferably the ester of trimethylolpropane diallyl ether or pentaerythritol triallyl ether and a polycarboxylic acid (anhydride).
Claims17
A binder composition for powder coatings consisting essentially of a mixture of an unsaturated polyester, an oligomer having 4-12 allylether groups and further having ester groups, and optionally 0-0.5% by weight relative to said polyester and said oligomer, of a metal-containing catalyst and 0.1-5% by weight relative to said polyester and said oligomer, of an initiator, and wherein the ratio of the unsaturated grous of the polyester to the unsaturated groups of the allyl ether ester is between 50-99 equivalents:1-50 equivalents.
A binder composition for powder coatings consisting essentially of a mixture of an unsaturated polyester and an oligomer having allylether groups and further having ester groups, wherein the oligomer having said allylether groups and ester groups has 4-12 allylether groups, said oligomer being obtained by condensing a polycarboxylic acid or anhydride with an allyl ether alcohol.
Dependencies are inferred from the claim text.