- 专利标题： Modifiers for gypsum slurries and method of using them
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申请号： US11152317申请日： 2005-06-14
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公开(公告)号： US20060280898A1公开(公告)日： 2006-12-14
- 发明人: Dennis Lettkeman , Michael Shake , Qingxia Liu , John Wilson , Brian Randall , David Blackburn
- 申请人： Dennis Lettkeman , Michael Shake , Qingxia Liu , John Wilson , Brian Randall , David Blackburn
- 专利权人： United States Gypsum Company
- 当前专利权人： United States Gypsum Company
- 主分类号： C04B28/14
- IPC分类号： C04B28/14 ; C04B11/00 ; B32B1/04
摘要：
An improved gypsum slurry that includes water, calcium sulfate hemihydrate, a polycarboxylate dispersant and a modifier. The modifier is chemically configured to improve the efficacy of the polycarboxylate dispersant. Preferred modifiers include cement, lime, slaked lime, soda ash, carbonates, silicates and phosphates.