Morton International, Inc.

Rohm and Haas Company

James G Fotiou

Owen H Decker

Charles P Tarnoski

Roy M Berstler

Lee F Spenser

Lee F Spencer

Coating powders are provided which provide high-temperature, translucent coatings useful for light-emitting devices such as incandescent bulbs. The coating powders comprise a binder, at least 90 wt % up to 100 wt % of which is a silicone resin. The coating powders are filled with between about 10 and about 50 phr of fillers selected from the group consisting of needle-like calcium metasilicate, mica, rod-like glass particles, and mixtures thereof, the fillers having aspect ratios between about 8 and about 40.

Translucent high-temperature powder coatings

To form a sparkle finish by powder coating, an opaque initial layer is first applied to a substrate, e.g., by powder coating. Then a mixture of glass flake and clear coating powder is prepared by blending. This mixture is then applied to a substrate, e.g., electrostatically, and heated to fuse and/or cure the coating powder.

Method of applying coating powder and glass flake to produce a glass

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Reading, PA, United States of America

James G Fotiou