发明申请
- 专利标题: Method of improving dispersant efficacy in making gypsum products
- 专利标题(中): 提高石膏制品分散效率的方法
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申请号: US11445906申请日: 2006-06-02
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公开(公告)号: US20060278132A1公开(公告)日: 2006-12-14
- 发明人: Qiang Yu , Michael Lynn , Weixin Song , Qingxia Liu , Michael Shake , Frederick Jones
- 申请人: Qiang Yu , Michael Lynn , Weixin Song , Qingxia Liu , Michael Shake , Frederick Jones
- 申请人地址: US IL Chicago
- 专利权人: UNITED STATES GYPSUM COMPANY
- 当前专利权人: UNITED STATES GYPSUM COMPANY
- 当前专利权人地址: US IL Chicago
- 主分类号: C04B28/14
- IPC分类号: C04B28/14 ; C04B11/00
摘要:
The invention generally provides gypsum-containing slurries including stucco, trimetaphosphate salt, and naphthalenesulfonate dispersant, wherein the trimetaphosphate salt is present in an amount of at least about 0.12% by weight based on the weight of stucco. Other slurry additives can include accelerators, binders, starch, and paper fiber, glass fiber, and other known ingredients. The invention also comprises the gypsum-containing products made with such slurries, for example, gypsum wallboard, and a method of making gypsum wallboard.