发明授权
US07247662B2 Cement dispersant, its production process, and cement composition using the cement dispersant
失效
水泥分散剂，其生产工艺和使用水泥分散剂的水泥成分
- 专利标题： Cement dispersant, its production process, and cement composition using the cement dispersant
- 专利标题（中）： 水泥分散剂，其生产工艺和使用水泥分散剂的水泥成分
-
申请号： US11137228申请日： 2005-05-25
-
公开(公告)号： US07247662B2公开(公告)日： 2007-07-24
- 发明人: Tsutomu Yuasa , Noboru Sakamoto , Tsuyoshi Hirata
- 申请人： Tsutomu Yuasa , Noboru Sakamoto , Tsuyoshi Hirata
- 申请人地址： JP Osaka
- 专利权人： Nippon Shokubai Co., Ltd.
- 当前专利权人： Nippon Shokubai Co., Ltd.
- 当前专利权人地址： JP Osaka
- 优先权： JP2001-319828 20011017
- 主分类号： C08K3/00
- IPC分类号： C08K3/00
摘要：
Disclosed are the following: a cement dispersant which is excellent in initial dispersibility and further in flow retainability of cement, because of using a polymer having a proper molecular weight distribution; a process for producing this cement dispersant; and a cement composition using this cement dispersant. The cement dispersant comprises a water-soluble polymer (P) as a main component, and is characterized by displaying an area proportion (a value (A−B) given by subtracting an area ratio B of a lower molecular weight side portion from an area ratio A of a higher molecular weight side portion) in the range of 13 to 60%.