发明授权
- 专利标题： Calcium sulphate-based products having enhanced water resistance
- 专利标题（中）： 具有增强耐水性的硫酸钙基产品
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申请号： US13322016申请日： 2010-05-24
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公开(公告)号： US09127166B2公开(公告)日： 2015-09-08
- 发明人: Richard Ian Walton , Robin Fisher
- 申请人： Richard Ian Walton , Robin Fisher
- 申请人地址： GB Coventry
- 专利权人： BPB Limited
- 当前专利权人： BPB Limited
- 当前专利权人地址： GB Coventry
- 代理机构： GrayRobinson P.A.
- 代理商 Michael J. Colitz, III
- 优先权： GB0908809.7 20090522
- 国际申请： PCT/GB2010/050848 WO 20100524
- 国际公布： WO2010/133898 WO 20101125
- 主分类号： C04B41/50
- IPC分类号： C04B41/50 ; C09C1/02 ; C04B28/14 ; C04B111/27 ; C04B28/16 ; C04B28/34
摘要：
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.
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