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    • 3. 发明授权
    • Cement additive, cement composition and polycarboxylic acid polymer
    • 水泥添加剂,水泥组合物和聚羧酸聚合物
    • US06486260B1
    • 2002-11-26
    • US09472968
    • 1999-12-28
    • Tsutomu YuasaHirokatsu KawakamiTsuyoshi Hirata
    • Tsutomu YuasaHirokatsu KawakamiTsuyoshi Hirata
    • C08F22202
    • C08F222/02C04B24/2647C04B2103/30C04B2103/40C08F222/20
    • The present invention has for its object to provide an economical cement additive capable of reducing the amount of water to be added to cement compositions and still capable of providing cement compositions with high fluidity, good processability, and a proper level of air-entraining ability resulting from sufficient foaming prevention, at low addition levels, a cement composition in which the above cement additive is used, and a polycarboxylic acid polymer excellent in dispersing effects on cement particles or inorganic powders or pigments and capable of being used with advantage as a cement additive or a dispersant for various uses. The invention provides, among others, a cement additive comprising, as main component, a polycarboxylic acid polymer (X) which has; repeating units (A), (B), (C) and (D), wherein none of the proportion of occurrence S1 of repeating unit (A) the proportion of occurrence T1 of repeating unit (B) and the proportion of occurrence E1 of repeating unit (C) is not equal to zero, the average number n of moles of an oxyalkylene group as added in repeating unit (B) is not less than 110, and that the weight average molecular weight of said polycarboxylic acid polymer is not less than 10000.
    • 本发明的目的是提供一种经济的水泥添加剂,其能够减少要添加到水泥组合物中的水的量,并且仍然能够提供具有高流动性,良好加工性和适当水平的引气能力的水泥组合物 从低量添加水平的充分发泡防止使用上述水泥添加剂的水泥组合物和对水泥颗粒或无机粉末或颜料的分散效果优异且能够有利地用作水泥添加剂的多元羧酸聚合物 或用于各种用途的分散剂。本发明提供了一种水泥添加剂,其包含作为主要成分的多元羧酸聚合物(X),其具有: 重复单元(A),(B),(C)和(D),其中重复单元(A)的出现S1的比例,重复单元(B)的出现比例T1和发生比例E1 重复单元(C)不等于零,重复单元(B)中加入的氧化烯基的平均摩尔数不小于110,并且所述多元羧酸聚合物的重均分子量不小于 超过10000。
    • 5. 发明申请
    • ULTRARAPID HARDENING CEMENT COMPOSITION AND DISPERSANT FOR ULTRARAPID HARDENING CEMENT COMPOSITION
    • 超声波硬化水泥组合物和超声波硬化水泥组合物的分散剂
    • US20090131560A1
    • 2009-05-21
    • US12065443
    • 2006-08-30
    • Akira OnoHisashi InokawaTsuyoshi HirataHirokatsu KawakamiMasami Hattori
    • Akira OnoHisashi InokawaTsuyoshi HirataHirokatsu KawakamiMasami Hattori
    • C04B24/26
    • C04B28/06C04B24/2647C04B2111/00068C04B2103/22C04B24/06C04B24/32
    • To provide an ultrarapid hardening cement composition with high strength, the composition having: excellent fluidity; excellent usable time; and excellent initial strength under low temperature atmosphere as well as under general temperature atmosphere, and improving strength and durability of a hardening product of the composition. An ultrarapid cement hardening composition comprising: an ultrarapid hardening cement (A) comprising a calcium aluminate; and a cement dispersant (B), wherein the cement dispersant (B) comprises a copolymer having: a repeating unit derived from a monomer represented by the following formula (1): in the formula, R1 being the same or different and each representing a hydrogen atom or an alkyl group containing 1 to 18 carbon atoms; n representing an average molar number of addition and being a number of 10 to 300; and a repeating unit derived from a monomer represented by the following formula (2) in the formula, M representing a hydrogen atom, a monovalent metal atom, a divalent metal atom, an ammonium group, or an organic amine group.
    • 为了提供高强度的超硬硬化水泥组合物,其组成具有优异的流动性; 优秀的可用时间; 并且在低温气氛以及一般温度气氛下具有优异的初始强度,并提高组合物的硬化产物的强度和耐久性。 一种超级水泥硬化组合物,其包含:包含铝酸钙的超硬硬化水泥(A) 和水泥分散剂(B),其中所述水泥分散剂(B)包含共聚物,所述共聚物具有:衍生自由下式(1)表示的单体的重复单元:在该式中,R 1相同或不同,各自表示 氢原子或含有1至18个碳原子的烷基; n表示平均加成摩尔数,为10〜300的数; 和由下式中由下式(2)表示的单体衍生的重复单元,M表示氢原子,一价金属原子,二价金属原子,铵基或有机胺基。
    • 6. 发明申请
    • Method For Production Of Cement Dispersant And Polycarboxylic Acid Type Polymer For Cement Dispersant
    • 水泥分散剂和聚羧酸类聚合物水泥分散剂生产方法
    • US20070254976A1
    • 2007-11-01
    • US11631694
    • 2005-07-11
    • Tsuyoshi HirataHirokatsu Kawakami
    • Tsuyoshi HirataHirokatsu Kawakami
    • C08F220/06C04B24/26
    • C04B24/2647C04B2103/408C08F216/14C08F220/06
    • The efficiency of production of the polycarboxylic acid type cement dispersant is exalted. Photo-polymerization is adopted in the production of the polycarboxylic acid type cement dispersant by polymerizing at least one kind of monomer represented by the chemical formula 1 and at least one kind of monomer represented by the chemical formula 2. A polymer composition having a small solvent content is obtained by causing the polymerization reaction to proceed under the condition of containing the monomers at a high concentration. Specifically, this invention is directed toward a method for producing a powdered polycarboxylic acid type cement dispersant, which method comprises a step of polymerizing the monomers under the condition of containing the monomers at a concentration of 50-100 mass % based on the total mss of the monomers and the solvent, a step of cooling the formed polymer thereby solidifying the polymer, and a step of pulverizing the solidified polymer.
    • 提高了多元羧酸型水泥分散剂的生产效率。 通过聚合由化学式1表示的至少一种单体和由化学式2表示的至少一种单体,聚羧酸型水泥分散剂的制备中采用光聚合。具有小溶剂的聚合物组合物 通过使聚合反应在含有高浓度单体的条件下进行,得到含量。 具体地说,本发明涉及一种粉末状多元羧酸型水泥分散剂的制造方法,其特征在于,在单体浓度为50〜100质量%的条件下,以单体总量mss 单体和溶剂,冷却形成的聚合物从而使聚合物固化的步骤和粉碎固化的聚合物的步骤。