专利名称：Copolymer for cement admixtures and its production process and u
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发明人：Yamamoto, Masaya,Uno, Toru,Onda,换手机屏幕
Yoshiyuki,Tanaka, Hiromichi,Yamashita,
Akihiko,Hirata, Tsuyoshi,Hirano, Naoko
即溶咖啡申请号：EP00125128.9
申请日：20001117
公开号：EP1103570A2
公开日：
20010530十大排名电动车
专利内容由知识产权出版社提供
摘要：The prent invention provides: a copolymer for cement admixtures which displays high dispersibility with a small adding amount and excellent dispersibility particularly even in a high water reducing ratio area, a cement admixture utilizing the copolymer, and a cement composition, and further, a production process for the copolymer. The copolymer for cement admixtures compris: constitutional unit (I) derived from unsaturated polyalkylene glycol ether monomer (a) having an alkenyl group having 5 carbon atoms and an oxyalkylene group having 2 to 18 carbon atoms with an average addition number of moles of the oxyalkylene groups to be in the range of 10 to 300; and constitutional unit (II) derived from unsaturated monocarboxylic acid monomer (b). The cement admixture includes the copolymer for cement admixtures as an esntial component, and may further include a defoaming agent. The cement composition includes the copolymer for cement admixtures, and cement as esntial components. The production process for the copolymer compris: copolymerizing comonomers including unsaturated polyalkylene glycol ether monomer (a) and
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梦见自杀unsaturated monocarboxylic monomer (b) as esntial components by u of a chain-transfer agent, and/or adjusting pH of a resultant reaction mixture to not less than 5 after the copolymerization.
申请人：Nippon Shokubai Co., Ltd.
地址：1-1, Koraibashi 4-chome, Chuo-ku Osaka-shi, Osaka 541-0043 JP巴黎旅游景点
国籍：JP
孤独的女孩代理机构：Henkel, Feiler, Hänzel
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