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公开(公告)号：JPH04349160A
公开(公告)日：1992-12-03
申请号：JP12029691
申请日：1991-05-24
Applicant: KAO CORP
Inventor： IZUMI TATSUO , YAMATO FUJIO , FUJITA SHUICHI , YADOKORO YOSHIAKI , KITAGAWA KAZUE
Abstract: PURPOSE:To provide a cement dispersant, especially a water reducing agent, and a slump loss preventive agent. CONSTITUTION:Phenol or its derivative charaterized by using an amino terminator as the essential component and one or >=2 kinds of compds. selected from melamine, its derivative and urea, as required, are copolycondensed with formaldehyde to obtain a cement admixture with the condensate as the essential component. CONSTITUTION:Since the workability of concrete is kept for a long time by this invention, the cement dispersant is used for various purposes. This dispersant is used when the pumping of concrete is suspended or used as the cement milk or mortar grouting assistant. The dispersant is also effectively used to prevent separation of materials and to keep the flowability of the cement formulation placed by a tremie, underwater concrete, concrete in the continuous underground wall, shotcrete, centrifugally formed concrete, vibrated and compacted concrete, etc.
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公开(公告)号：JPH0437021B2
公开(公告)日：1992-06-18
申请号：JP28235687
申请日：1987-11-09
Applicant: KAO CORP
Inventor： IIZUKA MASANORI , MIZUNUMA TATSUYA , KANZAKI SHOJI , YADOKORO YOSHIAKI
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公开(公告)号：JPH04108645A
公开(公告)日：1992-04-09
申请号：JP22587490
申请日：1990-08-28
Applicant: KAO CORP
Inventor： IZUMI TATSUO , YADOKORO YOSHIAKI , YAMATO FUJIO , FUJITA SHUICHI
Abstract: PURPOSE:To perform the dispersion of cement in the region of extremely highly reducing water content and to improve the flowability, etc., of concrete by adding a blended material consisting of a salt of condensation product of specific aromatic sulfonic acid with folmaldehyde and water-insoluble polymer or metal complex with blended cement. CONSTITUTION:A cement dispersing agent is produced by mixing (A) salt of condensation product of aromatic sulfonic acid with folmaldehyde (e.g. salt of condensation product of naphthalenesulfonic acid with formaldehyde) composed essentially of a high condensation product in which the salt of condensation product of aromatic sulfonic acid with formaldehyde having =20000 with (B) water-insoluble polymer or water-insoluble metal complex (e.g. zinc complex of isobutylene/maleic anhydride copolymer). Further, suitable mixing ratio is in such a range that the weight ratio of solid content of the component (B) to the component (A) is regulated to 0.5/100 to 20/100. By adding this dispersing agent to blended cement, cement can be excellently dispersed even in the region of extremely highly reduced water content where water- cement ratio is 18-30%.
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公开(公告)号：JPH01122949A
公开(公告)日：1989-05-16
申请号：JP28235687
申请日：1987-11-09
Applicant: KAO CORP
Inventor： IIZUKA MASANORI , MIZUNUMA TATSUYA , KANZAKI SHOJI , YADOKORO YOSHIAKI
Abstract: PURPOSE:To obtain the above formed article having improved processability and workability, reduced deficiency and good compacting properties, by adding a cement admixture containing a maleic anhydride copolymer and water- reducing agent such as sulfonated melamine at a prescribed weight ratio of a cement at a defined amount, forming the blend and curing the formed product. CONSTITUTION:A cement admixture containing maleic anhydride copolymer A having 500-50,000 weight-average mol.wt. and water-reducing agent B such as sulfonated melamine resin at solid content weight ratio of 1:99-15:85 is prepared. The cement admixture is added to a cement at a solid content amount of 0.1-2.0pts.wt. based on 100pts.wt. cement and water-cement ratio and slump value is each adjusted to 25-45% and 1-15cm. A coarse aggregate, fine aggregate, water and admixture are added to the above-mentioned adjusted product to prepare a concrete, which is then formed. The formed product is then subjected to high-temperature curing or high-temperature and high-pressure curing to provide the formed article having high strength of >=100kg/cm form removal compression strength.
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公开(公告)号：JPS6287449A
公开(公告)日：1987-04-21
申请号：JP22830085
申请日：1985-10-14
Applicant: KAO CORP
Inventor： FUJIO AKIRA , KOJIMA TOSHIHARU , YADOKORO YOSHIAKI , IIZUKA MASANORI
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Patent Agency Ranking
公开(公告)号：JPS57118059A
公开(公告)日：1982-07-22
申请号：JP351081
申请日：1981-01-13
Applicant: Kao Corp
Inventor： KOKUBO ISAO , YADOKORO YOSHIAKI
IPC: C04B24/22
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公开(公告)号：JP2019001688A
公开(公告)日：2019-01-10
申请号：JP2017118367
申请日：2017-06-16
Applicant: OHBAYASHI CORP , KAO CORP
Inventor： SAKURAI KUNIAKI , HIRATA TAKAYOSHI , TAMAISHI RYUSUKE , YADOKORO YOSHIAKI
Abstract: 【課題】土木工事で標準的に用いられる普通コンクリートにおいて、少ない単位セメント量のままブリーディングを抑制し、スランプ保持性を高め、かつ比較的コストの低い減水剤、およびそれを用いてなる水硬性組成物用添加剤を提供すること。【解決手段】JIS A 6204により評価される減水率が18%未満である減水剤と、多糖誘導体とを含有することを特徴とする、水硬性組成物用添加剤。また、上記水硬性組成物用添加剤と、セメントと、水と、粗骨材と、細骨材とを含有することを特徴とする、水硬性組成物。このような水硬性組成物を用いてなるレディミクストコンクリートは、JIS A 5308で規定された普通コンクリートとしての粗骨材寸法とスランプと呼び強度との関係を満たす。【選択図】なし
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公开(公告)号：JP2014080337A
公开(公告)日：2014-05-08
申请号：JP2012229675
申请日：2012-10-17
Inventor： TERAI HISATO , YADOKORO YOSHIAKI
Abstract: PROBLEM TO BE SOLVED: To provide a method for forcibly feeding concrete, in which the pump forced feedability of poor mix concrete having 8-15 cm slump value is improved so that the slump value is restrained from being changed before and after the poor mix concrete is forcibly fed by a pump and excellent executability can be imparted thereto.SOLUTION: In the method for forcibly feeding concrete by the pump, the predetermined concrete containing water, cement, a mixing agent, a polysaccharide derivative and an aggregate is forcibly fed by the pump. The polysaccharide derivative is obtained by substituting hydrophobic substituents, each of which has a 8-40C hydrocarbon chain as a partial structure, or ionic hydrophilic groups, each of which has one or more groups selected from the group consisting of a sulfonic acid group and a sulfonate group as another partial structure, for hydrogen atoms of a part or the whole of hydroxyl groups of a polysaccharide, an alkylated derivative thereof, or a hydroxyalkylated derivative thereof.
Abstract translation: 要解决的问题：提供一种强制供给混凝土的方法，其中提高了具有8-15cm坍落度值的混合混凝土的强制供给能力，使得在混合混凝土之前和之后，抑制坍落度值被改变 通过泵强制供给，可以赋予优异的可执行性。解决方案：在通过泵强制供给混凝土的方法中，含有水，水泥，混合剂，多糖衍生物和骨料的预定混凝土被强制供给 泵。 多糖衍生物是通过取代每个具有8-40℃烃链作为部分结构的疏水性取代基，或者离子性亲水基团，其各自具有一个或多个选自磺酸基和 磺酸盐基团作为另一部分结构，对于多糖的一部分或全部羟基的氢原子，其烷基化衍生物或其羟烷基化衍生物。
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公开(公告)号：JP2012086991A
公开(公告)日：2012-05-10
申请号：JP2010232739
申请日：2010-10-15
Inventor： TERAI HISATO , YADOKORO YOSHIAKI , YAMAMURO HODAKA , ICHIKAWA HIROTSUGU
IPC: C04B24/26 , C04B24/32 , C04B28/02 , C08F290/06
Abstract: PROBLEM TO BE SOLVED: To provide an admixture for a hydraulic composition, which can allow the hydraulic composition containing hydraulic powder to exhibit excellent fluidity retention, low viscosity, and retention effect of the low viscosity.SOLUTION: The admixture for the hydraulic composition includes (A) a specific phosphate ester copolymer, (B) a specific acrylic ester copolymer, and (C) polyethylene glycol having a weight-average molecular weight of 6,000-50,000.
Abstract translation: 要解决的问题：提供一种水硬性组合物的混合物，其可以使含有水硬性粉末的水硬性组合物表现出优异的流动性保持性，低粘度和低粘度的保留效果。 水溶液组合物的混合物包括（A）特定的磷酸酯共聚物，（B）特定的丙烯酸酯共聚物和（C）重均分子量为6000〜5000的聚乙二醇。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2007092061A
公开(公告)日：2007-04-12
申请号：JP2006240672
申请日：2006-09-05
Inventor： SHIMODA MASARO , KONO YOSHINAO , YADOKORO YOSHIAKI , HAMAI TOSHIMASA , HAMADA DAISUKE
IPC: C08F290/06 , C04B24/26 , C04B28/02 , C08F220/28 , C08F230/02
CPC classification number: C04B24/246 , C04B2103/408
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a dispersant for a hydraulic composition imparting an excellent dispersing effect and viscosity reducing effect to the hydraulic composition, in a practical industrial level with a good reproducibility. SOLUTION: The method for producing the phosphate polymer suitable for the dispersant for a hydraulic composition comprises a copolymerization of a specific monomer 1 having a polyoxyalkylene group, a phosphoric monoester monomer 2, and a phosphoric diester monomer 3 in a polymerization solvent having 0.01-4.0 mg/kg of dissolved oxygen concentration at 25°C and setting pH at less than 7. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 要解决的问题：提供一种制造水硬性组合物的分散剂的方法，其在实用的工业水平上具有优异的再现性，赋予水硬性组合物优异的分散效果和降粘效果。 解决方案：适用于水硬性组合物的分散剂的磷酸酯聚合物的制造方法包括在具有聚氧化烯基的特定单体1，磷酸单酯单体2和磷酸二酯单体3的聚合溶剂中共聚合， 0.01-4.0mg / kg溶解氧浓度在25℃，pH值小于7.（C）2007，JPO＆INPIT
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