发明授权
- 专利标题： Preparation of gypsum compositions
- 专利标题（中）： 石膏组合物的制备
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申请号： US11153966申请日： 2005-06-16
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公开(公告)号： US07070648B1公开(公告)日： 2006-07-04
- 发明人: Steven A. Schwartz , Frank J. Liotta, Jr. , Edward A. Barsa
- 申请人： Steven A. Schwartz , Frank J. Liotta, Jr. , Edward A. Barsa
- 申请人地址： US DE Greenville
- 专利权人： Lyondell Chemical Technology, L.P.
- 当前专利权人： Lyondell Chemical Technology, L.P.
- 当前专利权人地址： US DE Greenville
- 代理商 Shao-Hua Guo
- 主分类号： C04B24/24
- IPC分类号： C04B24/24
摘要：
A gypsum composition containing a sulfonate-containing comb-branched copolymer is disclosed. The sulfonate-containing comb-branched copolymer comprises recurring units of a polyether macromonomer, an acrylic monomer, and a sulfonate monomer. The sulfonate-containing comb-branched copolymer not only increases the fluidity of gypsum slurry but also has reduced retardation on the gypsum setting.
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