发明名称 |
Siloxane polymerization in wallboard |
摘要 |
Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsion of siloxane and water, then combining the slurry with a dry mixture of stucco, magnesium oxide and Class C fly ash. The slurry is then shaped as desired and the stucco is allowed to set and the siloxane polymerizes. The resulting product is useful for making a water-resistant gypsum panel having a core that includes interwoven matrices of calcium sulfate dihydrate crystals and a silicone resin, where the interwoven matrices have dispersed throughout them a catalyst comprising magnesium oxide and components from a Class C fly ash. |
申请公布号 |
ZA200800321(B) |
申请公布日期 |
2008.12.31 |
申请号 |
ZA20080000321 |
申请日期 |
2008.01.10 |
申请人 |
UNITED STATES GYPSUM COMPANY |
发明人 |
WANG, XUMING;REED, PAUL;LIU, QINGXIA;YU, QIANG |
分类号 |
C04B |
主分类号 |
C04B |
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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