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US 10,308,837 B2Granted
Lightweight particles and compositions containing them
AssigneePPG Industries Ohio, Inc.
InventorsLawrence G. Anderson, Chester J. Szymanski
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Abstract
Disclosed are particles that have an exterior surface coated with a thin polymeric coating, such as a coating that includes a sulfur-containing polymer. Also disclosed are compositions, such as fuel-resistant sealant and coating compositions, which include such particles. Aerospace vehicles having an aperture at least partially sealed with a sealant deposited from such a sealant composition are also disclosed.
Claims21
A composition comprising:
- (a) a polymeric film-forming binder comprising reactive functional groups;
- and
- (b) particles dispersed in the binder, wherein,
- the particles comprise a coating, wherein the coating comprises an aminoplast resin;
- the coated particles are characterized by a specific gravity of no more than 0.1;
- the composition comprises less than 5 wt % of the coated particles, wherein wt % is based on the total weight of the composition;
- and
- the composition has a specific gravity of less than 1.0.
5 more elements
Dependencies are inferred from the claim text.