发明授权
US06939935B2 Anionic polymers of acrylic and/or methacrylic acids and maleic esters, and salts thereof, and their use as cement/concrete additives
有权
丙烯酸和/或甲基丙烯酸和马来酸酯的阴离子聚合物及其盐，以及它们作为水泥/混凝土添加剂的用途
- 专利标题： Anionic polymers of acrylic and/or methacrylic acids and maleic esters, and salts thereof, and their use as cement/concrete additives
- 专利标题（中）： 丙烯酸和/或甲基丙烯酸和马来酸酯的阴离子聚合物及其盐，以及它们作为水泥/混凝土添加剂的用途
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申请号： US10309968申请日： 2002-12-04
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公开(公告)号： US06939935B2公开(公告)日： 2005-09-06
- 发明人: Ramon Valls , Jaim Tuduri , Rafael Pi Subirana
- 申请人： Ramon Valls , Jaim Tuduri , Rafael Pi Subirana
- 申请人地址： ES Barcelona
- 专利权人： Cognis Iberia S.L.
- 当前专利权人： Cognis Iberia S.L.
- 当前专利权人地址： ES Barcelona
- 代理商 John F. Daniels
- 优先权： EP01129799 20011214
- 主分类号： C08F283/06
- IPC分类号： C08F283/06 ; C08F218/16 ; C08F222/02 ; C08F222/16
摘要：
Anionic polymers obtainable by: (a) esterifying maleic acid or its anhydride with alkyl polyalkylene glycols; (b) copolymerizing the esters obtained with (meth)acrylic acid; and (c) converting the polymers obtained into the salt form by addition of alkali metal bases; are disclosed.
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