LIGHTWEIGHT PARTICLES AND COMPOSITIONS CONTAINING THEM

摘要

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 scaled with a sealant deposited from such a sealant composition are also disclosed.

主权项

1. A particle comprising an exterior surface having a coating thereon, wherein the coating comprises:
a reaction product of reactants comprising:
(1) an aminoplast resin; and(2) a compound comprising a hydroxyl group and a group reactive with the aminoplast resin; and unreacted hydroxyl groups.