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    • 3. 发明授权
    • (Meth) acrylic acid (salt) polymer and its production process
    • (Meth)丙烯酸(盐)聚合物及其生产工艺
    • US06900275B2
    • 2005-05-31
    • US10281971
    • 2002-10-29
    • Takashi TomitaTsutomu YuasaHirokatsu Kawakami
    • Takashi TomitaTsutomu YuasaHirokatsu Kawakami
    • C04B24/26C08F2/00C08F4/40C08F220/04C08F220/28C08F290/06C08F283/06
    • C08F290/061C04B24/2647C04B2103/408C08F220/04C08F220/28C08F290/06C08F290/062
    • There is provided: a (meth)acrylic acid (salt) polymer which has high properties and is little colored; and a process which can produce this polymer with a high polymerization conversion without causing the corrosion of the reaction vessel. When a (meth)acrylic acid (salt) polymer is obtained by carrying out polymerization of an unsaturated monocarboxylic monomer (a) and an unsaturated polyalkylene glycolic monomer (b) with a polymerization initiator, either a redox polymerization initiator including hydrogen peroxide and a reducing agent is used as the polymerization initiator in a specific amount, or the unsaturated polyalkylene glycolic monomer is subjected to the polymerization in the form of an esterification reaction product as obtained by a process including the steps of: esterifying the unsaturated monocarboxylic monomer and a polyalkylene glycol in a specific charging ratio in the presence of an acid catalyst in a manner for a portion of the residual unsaturated monocarboxylic monomer as a starting raw material to remain; and then neutralizing the acid catalyst and the residual unsaturated monocarboxylic monomer (a) with a basic substance after the esterification; and the polymerization is carried out under conditions where the pH during the polymerization is in the range of 3.2 to 7.0.
    • 提供:具有高性能并且着色少的(甲基)丙烯酸(盐)聚合物; 以及可以在不引起反应容器的腐蚀的情况下以高聚合转化率生产该聚合物的方法。 当通过用聚合引发剂进行不饱和单羧酸单体(a)和不饱和聚亚烷基二醇单体(b)的聚合获得(甲基)丙烯酸(盐))聚合物时,可以使用包含过氧化氢的还原性氧化还原聚合引发剂 作为聚合引发剂使用,或不饱和聚亚烷基二醇单体以酯化反应产物的形式进行聚合,所述方法包括以下步骤:酯化不饱和单羧酸单体和聚亚烷基二醇 在酸催化剂存在下,以残留不饱和单羧酸单体的一部分作为起始原料保留的方式,以特定的带电比例; 然后在酯化后用碱性物质中和酸催化剂和残余不饱和单羧酸单体(a); 聚合反应在聚合反应中的pH在3.2〜7.0的条件下进行。
    • 5. 发明授权
    • Ultrafine particle grouting composition
    • 超细颗粒灌浆组合物
    • US07717998B2
    • 2010-05-18
    • US11672305
    • 2007-02-07
    • Tomohiro KanazawaHirokatsu Kawakami
    • Tomohiro KanazawaHirokatsu Kawakami
    • C04B24/04C04B24/24
    • C04B28/08C04B7/21C04B24/2647C04B28/14C04B2111/00663C04B2111/70C09K17/10C09K17/16C09K17/40Y02P40/143Y02W30/94C04B2103/408C04B22/143C04B40/0028C04B7/527C04B18/141
    • To provide an ultrafine particle grouting composition which is excellent in dispersibility and dispersion retainability and can be easily injected into minute spaces between particles of grounds, rock cracks, and the like. An ultrafine particle grouting composition comprising ultrafine particle cement, wherein the ultrafine particle grouting composition is at least one selected from the group consisting of the following (i) and (ii): (i) the ultrafine particle grouting composition comprises ultrafine particle cement (A) and a polycarboxylic acid dispersant (C), and the ultrafine particle cement (A) comprises blast furnace slag and gypsum, andthe ultrafine particle cement (A) has 10% by volume or less of particles having a particle diameter of 16 μm or more in powder form of the cement; and (ii) the ultrafine particle grouting composition comprises ultrafine particle cement (B) and a polycarboxylic acid dispersant (D), and the ultrafine particle cement (B) comprises 2 to 25% by weight of cement clinker containing 5% by weight or less of 3CaO.Al2O3, 74 to 97% by weight of blast furnace slag, and 1 to 5% by weight of gypsum, and the ultrafine particle cement (B) has 60 to 80% by volume of particles having a particle diameter of 1 to 5 μm in powder form of the cement.
    • 提供分散性和分散保持性优异的极细颗粒灌浆组合物,并且可以容易地注入到地面颗粒,岩石裂纹等之间的微小空间中。 1.一种超微粒子灌浆组合物,其特征在于,上述超细粒子水泥浆组合物是选自下述(i)和(ii)中的至少一种:(i)超微粒子灌浆组合物,其特征在于, )和多元羧酸分散剂(C),超细颗粒水泥(A)包括高炉渣和石膏,超细颗粒水泥(A)具有10体积%以下的粒径为16μm的粒子,或 更多以粉末形式的水泥; 和(ii)超细颗粒灌浆组合物包含超细颗粒水泥(B)和多元羧酸分散剂(D),超细颗粒水泥(B)包含2至25重量%的含5重量%以下的水泥熟料 的3CaO.Al 2 O 3,74〜97重量%的高炉矿渣和1〜5重量%的石膏,超微粒子水泥(B)具有60〜80体积%的粒径为1〜 水泥粉末形式为5μm。
    • 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。
    • 8. 发明授权
    • Polymer composition for cement dispersant and method for producing same
    • 水泥分散剂用聚合物组合物及其制造方法
    • US08859702B2
    • 2014-10-14
    • US13390019
    • 2010-08-10
    • Hirokatsu KawakamiNaohiko Itayama
    • Hirokatsu KawakamiNaohiko Itayama
    • C08F220/06C07C41/01C07C43/15C04B24/26C08F290/06C04B103/40
    • C04B24/2647C04B24/267C04B2103/408C08F290/062
    • The present invention has an object to provide a polymer-containing composition for dispersants for cement which exhibits higher cement dispersibility even when used in a small amount, and can provide high flowability to a cement composition such as mortar and concrete and stably maintain this high flowability for a certain period, and to provide a production method thereof. The polymer-containing composition for dispersants for cement includes a polymer including a repeating unit derived from an unsaturated polyalkylene glycol ether monomer (I) having a specific structure and a repeating unit derived from an unsaturated carboxylic acid monomer (II) having a specific structure, and is prepared by polymerizing an unsaturated polyalkylene glycol ether monomer (I)-containing composition that includes specific amounts of specific components.
    • 本发明的目的是提供一种用于水泥分散剂的含聚合物组合物,即使在少量使用时也表现出更高的水泥分散性,并且可以为诸如砂浆和混凝土的水泥组合物提供高流动性并且稳定地保持这种高流动性 并提供一种生产方法。 用于水泥分散剂的含聚合物组合物包括聚合物,其包含源自具有特定结构的不饱和聚亚烷基二醇醚单体(I)的重复单元和源自具有特定结构的不饱和羧酸单体(II)的重复单元, 并且通过聚合包含特定量的特定成分的不饱和聚亚烷基二醇醚单体(I)组合物制备。
    • 9. 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。
    • 10. 发明申请
    • Powdery cement dispersant
    • 粉状水泥分散剂
    • US20060229388A1
    • 2006-10-12
    • US11393006
    • 2006-03-29
    • Hirokatsu KawakamiWashin KawaharaHiromichi Tanaka
    • Hirokatsu KawakamiWashin KawaharaHiromichi Tanaka
    • C04B24/26
    • C04B24/2647C04B24/2652C04B40/0042C04B2103/32C04B2103/408
    • The present invention provides a means to express superior dispersibility and to be easily pulverized in the polycarboxylic acid type cement dispersant. The purpose is attained by a powdery cement dispersant having, as a main component, a polycarboxylic acid type copolymer having a repeating unit (I) derived from an unsaturated polyalkyleneglycol type monomer, a repeating unit (II) derived from an unsaturated carboxylic acid type monomer and a repeating unit (III) derived from a branched compound having a branched structure containing 3 or more polyalkyleneimine chains or polyoxyalkylene chains in a molecule, or a powdery cement dispersant comprising a polycarboxylic acid type copolymer (A) having a repeating unit (IV) derived from an unsaturated polyalkyleneglycol type monomer and a repeating unit (V) derived from an unsaturated carboxylic acid type monomer and a branched compound (B) with a branched structure containing 3 or more polyalkyleneimine chains or polyoxyalkylene chains in a molecule.
    • 本发明提供了表现出优异的分散性并易于在多元羧酸型水泥分散剂中粉碎的方法。 其目的是通过以不饱和聚亚烷基二醇型单体衍生的重复单元(I)作为主要成分的具有由不饱和羧酸型单体衍生的重复单元(II)的多元羧酸型共聚物, 和衍生自具有分子中含有3个以上聚亚烷基亚胺链或聚氧化烯链的支链结构的支链化合物的重复单元(III),或包含具有重复单元(IV)的多元羧酸型共聚物(A)的粉末状水泥分散剂, 衍生自不饱和聚亚烷基二醇型单体和衍生自不饱和羧酸型单体的重复单元(V)和具有分子中含有3个或更多个聚亚烷基亚胺链或聚氧化烯链的支链结构的支链化合物(B)。