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公开(公告)号：JPH0517186A
公开(公告)日：1993-01-26
申请号：JP16963691
申请日：1991-07-10
Applicant: KAO CORP
Inventor： YAMATO FUJIO , FUJITA SHUICHI , IIZUKA MASANORI
Abstract: PURPOSE:To obtain an admixture useful as a water-reducing agent and E slump preventive agent of a cement composition by using a neutralized cocondensate of a specific naphthalenesulfonic acid formaldehyde condensate with a specified phenolic compound as a component. CONSTITUTION:A cement admixture consisting essentially of a neutralized cocondensate of a condensate (prepolymer) of naphthalenesulfonic acid and formaldehyde having 3000-130000 average molecular weight with (A) a phenolic compound expressed by the formula. In the formula, R denotes H or 1-3C straight-chain or branched chain alkyl group; X denotes H or sulfone group. When the average molecular weight of the aforementioned prepolymer is =13000, dispersibility of the resultant cocondensate and slump properties are deteriorated.
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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：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：JPS63214335A
公开(公告)日：1988-09-07
申请号：JP4495587
申请日：1987-02-27
Applicant: KAO CORP
Inventor： OCHI KOSUKE , FUJITA SHUICHI , IZUMI TATSUO , TANAKA MASAJI
Abstract: PURPOSE:To enhance dispersion effect, by preparing a dispersant from a polymer having a narrow M.W. distribution width obtained by the oxidative polymerization reaction of a vinyl polymer or alkylene oxide polymer having surface activity. CONSTITUTION:A dispersant is prepared from a polymer having a narrow M.W. distribution width obtained by subjecting a vinyl polymer or alkylene oxide polymer having surface activity to oxidative polymerization reaction using ozone, light and peroxide. As the vinyl polymer having surface activity, there is a polymer of acrylic acid, maleic acid or styrenesulfonic acid or a derivative thereof. As peroxide used in the oxidative polymerization reaction, one kind or more of inorg. peroxide or org. peroxide is used. In the oxidative polymerization reaction, it is pref. to dissolve 100pts.wt. of the polymer in 100-200pts.wt. of a solvent and to add 0.1-20pts.wt. of a metal ion to the resulting solution.
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公开(公告)号：JP2007153637A
公开(公告)日：2007-06-21
申请号：JP2005347905
申请日：2005-12-01
Inventor： YAMATO FUJIO , FUJITA SHUICHI
IPC: C04B24/26 , C04B28/14 , C04B103/40 , C08F216/18 , C08F220/28 , C08F290/06
CPC classification number: C04B28/14 , C04B24/246
Abstract: PROBLEM TO BE SOLVED: To provide a dispersant for gypsum slurry giving excellent foam stability and flowability even to gypsum slurry with a less water content.
SOLUTION: The dispersant for gypsum slurry contains a phosphate-based polymer (A) obtained by copolymerizing at pH 7 or below a specific monomer 1 having a polyoxyalkylene group, a phosphoric acid monoester-based monomer 2, and a phosphoric acid diester-based monomer 3.
COPYRIGHT: (C)2007,JPO&INPITAbstract translation: 要解决的问题：提供一种石膏浆料的分散剂，即使对于具有较少含水量的石膏浆料也能提供优异的泡沫稳定性和流动性。 解决方案：用于石膏浆料的分散剂含有通过在pH7或更低的具有聚氧化烯基的特定单体1，磷酸单酯类单体2和磷酸二酯共聚获得的磷酸酯基聚合物（A） 的单体3.版权所有（C）2007，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2003314191A
公开(公告)日：2003-11-06
申请号：JP2002118135
申请日：2002-04-19
Inventor： FUJITA SHUICHI , YAMATO FUJIO
IPC: E21D9/06
Abstract: PROBLEM TO BE SOLVED: To provide a foaming agent for use in a foam shielding method, which forms stable foam and does not degrade the fluidity of sand and earth.
SOLUTION: The foaming agent for use in foam shielding contains an alkyl ether sulfate salt containing a hydrocarbon radical having 8 to 18 carbon atoms and an alcohol having 8 to 18 carbon atoms at a specific weight ratio.
COPYRIGHT: (C)2004,JPOAbstract translation: 要解决的问题：提供一种形成稳定泡沫并且不降低砂土流动性的泡沫屏蔽方法中使用的发泡剂。 解决方案：用于泡沫屏蔽的发泡剂包含含有8至18个碳原子的烃基的烷基醚硫酸盐和具有8至18个碳原子的醇以特定重量比。 版权所有（C）2004，JPO
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公开(公告)号：JP2002187755A
公开(公告)日：2002-07-05
申请号：JP2000382272
申请日：2000-12-15
Applicant: KAO CORP
Inventor： SHIBA DAISUKE , YAMATO FUJIO , FUJITA SHUICHI
Abstract: PROBLEM TO BE SOLVED: To provide a dispersant which is capable of exhibiting dispersion properties and dispersion retention characteristics with respect to, in particular, a hydraulic composition having a
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公开(公告)号：JP2000203920A
公开(公告)日：2000-07-25
申请号：JP37254198
申请日：1998-12-28
Applicant: KAO CORP
Inventor： YAMATO FUJIO , FUJITA SHUICHI , SHIROISHI TAKANOBU
IPC: C04B24/26 , B28B1/20 , C04B28/04 , C04B103/12 , C04B111/56
Abstract: PROBLEM TO BE SOLVED: To produce centrifugally molded concrete while remarkably controlling the amount of sludge discharged and the solid content of the sludge. SOLUTION: A polyoxyalkylene (2-3C)-containing polymer is added to fresh concrete containing an aromatic dispersant during or after charging the concrete into a molding flash. The aromatic dispersant is preferably a water-soluble salt of a naphthalenesulfonic acid-formaldehyde condensation product. The polyoxyalklene (2-3C)-containing polymer is preferably a water-soluble copolymer obtained by polymerizing a monomer mixture containing one or more vinyl monomers (a) having 2-300 mol 2-3C oxyalkylene groups added on the average and one or more vinyl monomers (b) having a carboxy, sulfo or amide group.
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公开(公告)号：JPH09328345A
公开(公告)日：1997-12-22
申请号：JP14138096
申请日：1996-06-04
Applicant: KAO CORP
Inventor： SHIMODA MASARO , SHIBA DAISUKE , SHIROTA KYOICHI , FUJITA SHUICHI
IPC: C04B24/26 , C04B28/04 , C04B40/00 , C08F290/00 , C08F290/06 , C08L33/02 , C08L33/04 , C08L33/08 , C08L55/00 , C08L71/00 , C08L71/02
Abstract: PROBLEM TO BE SOLVED: To obtain an admixture for a concrete improving a separating resistance of materials, an initial strength, etc., by specifying a blending ratio of a copolymer, a high quality water reducing agent, a water-soluble polymer and a defoaming agent, a molar ratio of monomers forming the copolymer and the average molecular weight of the copolymer. SOLUTION: This admixture for a concrete is prepared by blending 100 pts.wt. mixture comprising a copolymer, a high quality water reducing agent and a water-soluble polymer having a ratio of (35-90) to (5-40) to (5-60), (with the proviso that the total thereof is 100 pts.wt.), with 0.01-30 pts.wt. defoaming agent. The copolymer is obtained by copolymerizing monomers of formula I and II. The molar ratio of the monomer of formula I to that of formula II is (1/90) to (50/50). A weight average molecular weight (measured by a gel- permeation chromatography method and reduced to a sodium polystryrenesulfonate) is 3,000-200,000. An aromatic water reducing agent is used as the high quality water reducing agent. A polyalkylene glycol derivative is used as the water-soluble polymer. A product having an excellent surface appearance is obtained by using the admixture for the concrete.
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公开(公告)号：JPH0967153A
公开(公告)日：1997-03-11
申请号：JP22016895
申请日：1995-08-29
Applicant: KAO CORP
Inventor： YAMATO FUJIO , FUJITA SHUICHI , HONMA YUICHI
Abstract: PROBLEM TO BE SOLVED: To obtain a mixing agent for concrete having an excellent preventing effect on reduction of viscosity and excellent fluidity holding property by incorporating an oxyalkylene group-contg. water-soluble vinyl copolymer and a water- soluble salt of unsatd. carboxylic acid (copolymer. SOLUTION: This concrete mixing agent is obtd. by incorporating (A) a copolymer obtd. by polymn. of a monomer expressed by formula I (e.g. methoxypolyethylene glycol) and one or more kinds of monomers selected from compds. expressed by formulae II and III (e.g. acrylic acid), and (B) a single polymer of unsatd. carboxylic acid (e.g. maleic acid) selected from unsatd. monocarboxylic acids and unsatd. dicarboxylic acids, or a water-solulble salt of copolymer or two or more kinds (such as sodium salt of acrylic acid/maleic acid copolymer) as the essential components. In formula I, R1 , R2 are hydrogen or methyl groups, m1 is 0 to 2, AO is a 2-3C oxyalkylene group, (n) is 50 to 300, X is H or a 1-3C alkyl group. In formulae II and III, R3 -R5 are hydrogen, methyl groups, or formula IV, wherein R6 is hydrogen or methyl group, M1 , M2 , Y are each hydrogen, an alkyl metal, etc., and m2 is 0 to 2.
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