SPRAY-APPLIED JOINT COMPOUND, WALL ASSEMBLY, AND METHODS AND PRODUCTS RELATED THERETO

摘要

Provided are compositions and methods for expeditious wall installation by spray-applying a joint compound comprising a polymeric binder and hollow spheres.

主权项

1. A drying-type joint compound with a shrinkage of less than 15% by volume as measured according to ASTM C474-05, the drying-type joint compound comprising a plurality of hollow spheres and a binder selected from the group consisting of acrylic acid polymers, acrylic acid copolymers, alkyds, polyurethanes, polyesters, epoxies, and combinations thereof;
wherein the hollow spheres are composed of self-contained air bound by a solid barrier and wherein the hollow spheres have an average isostatic crush strength of at least about 250 psi as measured according to ASTM D3102-78; and where the density of the spheres are from about 0.0015 lb/in3 (about 0.04 g/cm3) to about 0.04 lb/in3 (about 1.1 g/cm3); and wherein the drying-type joint compound has the viscosity in the range from about 15,600 cP to about 23,000 cP as measured according to ASTM C474-05.