Invention Grant
- Patent Title: Calcium sulphate-based products having enhanced water resistance
- Patent Title (中): 具有增强耐水性的硫酸钙基产品
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Application No.: US13322016Application Date: 2010-05-24
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Publication No.: US09127166B2Publication Date: 2015-09-08
- Inventor: Richard Ian Walton , Robin Fisher
- Applicant: Richard Ian Walton , Robin Fisher
- Applicant Address: GB Coventry
- Assignee: BPB Limited
- Current Assignee: BPB Limited
- Current Assignee Address: GB Coventry
- Agency: GrayRobinson P.A.
- Agent Michael J. Colitz, III
- Priority: GB0908809.7 20090522
- International Application: PCT/GB2010/050848 WO 20100524
- International Announcement: WO2010/133898 WO 20101125
- Main IPC: C04B41/50
- IPC: C04B41/50 ; C09C1/02 ; C04B28/14 ; C04B111/27 ; C04B28/16 ; C04B28/34
Abstract:
A water-resistant calcium sulphate based body comprises a matrix of crystalline calcium sulphate anhydrite, crystals of the matrix being connected to one another by water-resistant phosphate bonding zones, optionally also containing aluminum. The body can be produced by impregnating a porous calcium sulphate with a source of phosphate ions (optionally containing aluminum), and then calcining. Alternatively, a paste comprising calcium sulphate and a source of phosphate ions (optionally containing aluminum) is heated or compressed to form a ‘green body’ and then calcined to produce the body.
Public/Granted literature
- US20130269571A1 Calcium Sulphate-Based Products Having Enhanced Water Resistance Public/Granted day:2013-10-17
Information query
