Patent ID: 11885129
Assignee: USG INTERIORS, LLC
Field: Materials, metallurgy (Chemistry)
Classification: CPC E  B  C  D | IPC B  C  D  E

Claim 0:
1. A coated ceiling tile with an estimated noise reduction coefficient (eNRC) of at least 0.85, the coated ceiling tile comprising at least two coats of a coating being coated on at least one surface of the ceiling tile, and wherein the coating has pores and the coating comprises at the time of application to the ceiling tile a high Tg polymeric binder in an amount from 5 wt % to 25 wt % of the solids content in the coating composition, said high Tg polymeric binder having a glass transition temperature (Tg) in the range from 60° C. to 150° C., titanium dioxide, and void latex particles in an amount from 25 wt % to 75 wt % of the solids content in the coating composition, said void latex particles comprising a water-filled or air-filled core surrounded by a shell which comprises a thermoplastic polymer with Tg in the range from 60° C. to 110° C., the void latex particles having a diameter from 100 nm to 500 nm.