Patent ID: 6103360
Filing Date: 2000-08-15
Classification: C09D,E04B,Y10T

Abstract:
A coating composition for ceiling boards comprises water, a binder and a filler, said filler containing large particles with an average particle size of a minimum of about 50 microns, these large particles are present at an amount effective to obtain a coating composition which will make a durable, scratch resistant coat, medium particles with an average particle size in the range of from about 1.2 to about 30 microns, and small particles which have an average particle size in the range of from about 0.1 to about 1.0 microns, the small particles being present at a minimum amount of about 3% by dry solids volume, said amount being low enough to be effective to keep the coating composition at a low enough viscosity for spray application, the medium particles being present at an amount which is effective to give the coating the ability to make a coat having a light reflectance of at least about 0.84 as measured by ASTM E 1477-92.