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US 2016/0257845 A1Published application
Powder Coating Composition
OwnerTaesoon PARK, DaeHwa HYUN +1inventors
InventorsTaesoon PARK, DaeHwa HYUN, SeokJoo KIM
Life of this patent
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Abstract
A powder coating composition comprises one epoxy resin, at least one adhesion promoter and at least one filler, methods for coating susbstrates and substrates coated with a single layer powder coating system including the powder coating composition.
Claims15
A corrosion and chip resistant powder coating composition comprising:
- from 40 to 75 wt %, based on total weight of the composition, of one or more epoxy resins, wherein the one or more epoxy resins has an EEW from 700 to 1500;
- greater than 15 wt %, based on total weight of the composition, of at least one reinforcing fiber, wherein the at least one reinforcing fiber is a glass fiber and wherein the amount of glass fiber is between 35 and 95 phr;
- and
- from 0.1 wt % to 5 wt %, based on total weight of the composition, of at least one adhesion promoter.
1 more element
A method for coating a steel substrate comprising
- applying a single coat powder coating system comprising a corrosion and chip resistant powder coating composition comprising from 40 to 75 wt %, based on total weight of the composition, of at least one epoxy resin, greater than 15 wt %, based on total weight of the composition, of at least one reinforcing fiber, wherein the at least one reinforcing fiber is a glass fiber, and wherein the amount of glass fiber is between 35 and 95 phr, and from 0.1 wt % to 5 wt %, based on total weight of the composition, of at least one at least one adhesion promoter;
- and
- heating the powder coating composition to an effective temperature and an effective time sufficient to fuse the composition.
A steel substrate coated with a single layer powder coating system, wherein said single layer powder coating system comprises a corrosion and chip resistant powder coating composition comprising:
- from 40 to 75 wt %, based on total weight of the composition, of at least one epoxy resin, wherein the at least one epoxy resin has an EEW from 700 to 1300;
- greater than 15 wt %, based on total weight of the composition, of at least one reinforcing fiber, wherein the at least one reinforcing fiber is a glass fiber and wherein the amount of glass fiber is between 35 and 95 phr;
- from 0.1 wt % to 5 wt %, based on total weight of the composition, of at least one at least one adhesion promoter.
Dependencies are inferred from the claim text.