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US 2025/0109303 A1Published application
Powder coating compositions including retroreflective particles
AssigneePPG Industries Ohio, Inc.
InventorsPaul William Bradley, Manish Kr Mishra
Life of this patent
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Abstract
A retroreflective powder coating composition including a film-forming resin and a plurality of retroreflective particles. The film-forming resin including a base particle, a metallic coating, a pigment coating composition, and a substantially transparent siloxane coating.
Claims18
A retroreflective powder coating composition, comprising:
- a film-forming resin;
- and
- a plurality of retroreflective particles, each comprising:
- a base particle:
- a metallic coating disposed over at least a portion of the base particle;
- a pigment coating composition disposed over the metallic coating and/or the base particle, the pigment coating composition comprising:
- a binder resin;
- and
- an organic pigment;
- and
- a substantially transparent siloxane coating disposed over at least a portion of the pigment coating composition.
8 more elements
A method for producing retroreflective particles for use in a powder coating composition, comprising:
- applying a liquid pigment coating composition comprising a binder resin, an organic pigment over at least portions of a plurality of retroreflective particles, each retroreflective particle comprising a base particle having a metallic coating disposed over at least a portion of the base particle, to form pigmented retroreflective particles;
- and
- applying a substantially transparent siloxane coating over the pigmented retroreflective particles.
Dependencies are inferred from the claim text.