Composition of high temperature resistent powder coating, a preparation method therefore, and use thereof
AssigneeAkzo Nobel Coatings International B.V.
InventorsSuje Kim, Jian Tong
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Abstract
The present invention provides for a composition of high temperature resistant powder coating which comprises at least two silicone resins having different glass transition temperatures and/or different melt viscosities, a bi-functional resin, a mica-containing filler and optional additives. When applied to a substrate, the composition is capable of curing to form a high temperature resistant coating on the substrate surface. The present invention also provides for use of the composition of the present invention to coat a substrate, as well as substrates coated with the composition of the present invention.
Claims16
A powder coating composition comprising at least two silicone resins having at least one of different glass transition temperatures or different melt viscosities, a reinforcing filler, a bi-functional acrylic resin having hydroxyl and glycidyl functional groups, and a mica-containing filler, wherein the bi-functional acrylic resin is present in an amount of 15-25 wt. % based on the combined weight of the at least two silicone resins and the bi-functional resin and wherein the mica-containing filler is present in an amount of 45-100 wt. % based on the combined weight of the at least two silicone resins and the bi-functional resin.
Dependencies are inferred from the claim text.