发明名称 |
GYPSUM-CONTAINING COMPOSITION HAVING ENHANCED RESISTANCE TO PERMANENT DEFORMATION |
摘要 |
<p>A composition comprising a mixture of a calcium sulfate material, water, and a tetrametaphosphate compound is disclosed. Desirably, the inclusion of the tetrametaphosphate compound (e.g., salt or ion) in a pre-set treatment of a calcium sulfate material enhances the resistance to permanent deformation (e.g., sag), dimensional stability, and/or compressive strength of the composition while also preferably avoiding any significant retardive effect on the rate of hydration of calcined gypsum to calcium sulfate dihydrate. A set gypsum-containing product and a method for producing a set gypsum-containing product having increased resistance to permanent deformation are also disclosed.</p> |
申请公布号 |
EP1453772(B9) |
申请公布日期 |
2006.07.05 |
申请号 |
EP20020786987 |
申请日期 |
2002.12.09 |
申请人 |
UNITED STATES GYPSUM COMPANY |
发明人 |
VEERAMASUNENI, SRINIVAS;YU, QIANG;FRANK, WILLIAM, A. |
分类号 |
C04B22/16;C04B24/30;C04B24/38;C04B28/14 |
主分类号 |
C04B22/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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