Cement retarder and cement retardative sheet
    32.
    发明授权
    Cement retarder and cement retardative sheet 失效
    水泥缓凝剂和水泥阻滞片

    公开(公告)号:US06376580B1

    公开(公告)日:2002-04-23

    申请号:US09290549

    申请日:1999-04-12

    IPC分类号: C08K300

    摘要: A polymer comprising an anionic group (e.g. an acid anhydride group, a carboxyl group) and a hydrophilic segment (e.g. a polyoxyalkylene ether unit) is used as a cement retarder. The polymer is obtainable by copolymerization of a monomer including maleic anhydride with a monomer including a vinylalkyl ether-series monomer in which an alkylene oxide is added to allyl alcohol. The polymer may be a copolymer copolymerized with other monomers such as styrene. Use of this cement retarder can provide patterns or washing-finished face on the surface of a concrete product. The cement retarder is suitable for application for a cement retardative sheet.

    摘要翻译: 使用包含阴离子基团(例如酸酐基团,羧基)和亲水链段(例如聚氧化烯醚单元)的聚合物作为水泥缓凝剂。 该聚合物可以通过使包含马来酸酐的单体与包含烯键式醇的烯化氧的乙烯基烷基醚系单体的单体共聚而获得。 聚合物可以是与其它单体如苯乙烯共聚的共聚物。 使用这种水泥缓凝剂可以在混凝土产品的表面上提供图案或洗涤后的表面。 水泥缓凝剂适用于水泥阻滞片。

    Cement retarder and cement retardative sheet
    36.
    发明授权
    Cement retarder and cement retardative sheet 失效
    水泥缓凝剂和水泥阻滞片

    公开(公告)号:US6077910A

    公开(公告)日:2000-06-20

    申请号:US899167

    申请日:1997-07-23

    摘要: A polymer comprising an anionic group (e.g. an acid anhydride group, a carboxyl group) and a hydro-philic segment (e.g. a polyoxyalkylene ether unit) is used as a cement retarder. The polymer is obtainable by copolymerization of a monomer including maleic anhydride with a monomer including a vinylalkyl ether-series monomer in which an alkylene oxide is added to allyl alcohol. The polymer may be a copolymer copolymerized with other monomers such as styrene. Use of this cement retarder can provide patterns or washing-finished face on the surface of a concrete product. The cement retarder is suitable for application for a cement retardative sheet.

    摘要翻译: 使用包含阴离子基团(例如酸酐基团,羧基)和亲水链段(例如聚氧化烯醚单元)的聚合物作为水泥缓凝剂。 该聚合物可以通过使包含马来酸酐的单体与包含烯键式醇的烯化氧的乙烯基烷基醚系单体的单体共聚而获得。 聚合物可以是与其它单体如苯乙烯共聚的共聚物。 使用这种水泥缓凝剂可以在混凝土产品的表面上提供图案或洗涤后的表面。 水泥缓凝剂适用于水泥阻滞片。