Invention Grant
- Patent Title: Gypsum wallboard with enhanced fire resistance, and related coatings and methods
-
Application No.: US16804936Application Date: 2020-02-28
-
Publication No.: US11702373B2Publication Date: 2023-07-18
- Inventor: Qinghua Li , Naser Aldabaibeh , Mark Hemphill , Trevor Rische , Suman Sinha Ray
- Applicant: United States Gypsum Company
- Applicant Address: US IL Chicago
- Assignee: United States Gypsum Company
- Current Assignee: United States Gypsum Company
- Current Assignee Address: US IL Chicago
- Agency: Leydig, Voit & Mayer, Ltd.
- Main IPC: C04B41/50
- IPC: C04B41/50 ; B28B19/00 ; C04B28/14 ; E04C2/04 ; E04B1/94 ; C04B41/45 ; B28B11/14 ; B28B11/04 ; B28B11/24 ; B32B13/08 ; C04B18/08 ; C04B111/00 ; C04B111/28
Abstract:
Disclosed are an organic binder-based coating; a composite gypsum board containing face and back cover sheets, an outside surface of the back cover sheet bearing the coating; and a method of preparing composite board where the back cover sheet contains the coating on its outer surface. The coating is formed from a composition comprising an alkaline silicate, a solid filler, and optionally, a borate. An enhancing layer can also be applied to the back cover sheet.
Information query
