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AssigneeValspar Coatings (Shanghai) Co. Ltd.
InventorsYongbin CHEN, Jianzhong ZHANG, Wanjun XU
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The present application relates to a low temperature curing powder coating composition and articles formed therefrom. The powder coating composition comprises a polyester resin, a triglycidyl isocyanurate (TGIC) curing agent, a β-hydroxyalkylamide (HAA) curing agent and a leveling agent, wherein the leveling agent is a polymeric material in solid form with a melting point below 100° C. and a melt viscosity below 2000 mPa·s, as measured using a Brookfield viscometer at 200° C. The powder coating composition can be cured at a temperature of 140° C. or lower without the addition of any curing accelerator. Moreover, the coating formed by curing the powder coating composition is substantially free of pores.
A powder coating composition comprising a polyester resin, a triglycidyl isocyanurate (TGIC) curing agent, a β-hydroxyalkylamide (HAA) curing agent and a leveling agent, wherein the leveling agent is a polymeric material in solid form with a melting point below 100° C. and a melt viscosity below 2000 μmPa s, as measured using a Brookfield viscometer at 200° C.
Dependencies are inferred from the claim text.