公开(公告)号：JP2003002718A

公开(公告)日：2003-01-08

申请号：JP2001189663

申请日：2001-06-22

Applicant: Kao Corp ,  花王株式会社

Inventor： SHIBA DAISUKE ,  YAMATO FUJIO

IPC: C04B24/26 ,  C04B103/30 ,  C04B103/48 ,  C08F2/00 ,  C08F290/06

CPC classification number: C04B24/2647 ,  C04B28/14 ,  C04B2103/302

Abstract: PROBLEM TO BE SOLVED: To provide an admixture for gypsum composition which reveals excellent water-reducing property or operability independently of temperature of gypsum slurry or plaster and, in particular, for the gypsum slurry, improves the stability of the mixed bubbles. SOLUTION: This admixture consists of a copolymer mixture which is obtained by copolymerizing a specified monomer A1 such as ethylene type unsaturated carboxylic acid derivative having polyoxyalkylene groups and a specified monomer A2 such as (meth)acrylic acid and has the molar ratio A1/A2 which is changed at least one time in the process of reaction.

Abstract translation: 要解决的问题：为了提供石膏组合物的混合物，其显示与石膏浆料或石膏，特别是石膏浆料的温度无关的优异的降水性能或可操作性，提高了混合气泡的稳定性。 解决方案：该混合物由共聚合物组成，其通过使具有聚氧化烯基的乙烯型不饱和羧酸衍生物和特定单体A 2（如（甲基）丙烯酸）等特定单体A1共聚获得，并且其摩尔比A1 / A2为 在反应过程中至少改变一次。

公开(公告)号：JP2002179448A

公开(公告)日：2002-06-26

申请号：JP2001300900

申请日：2001-09-28

Applicant: KAO CORP

Inventor： SHIBA DAISUKE ,  SATO HARUYUKI ,  YAMATO FUJIO

IPC: C04B24/26 ,  C04B24/02 ,  C04B24/08 ,  C04B24/32 ,  C04B24/42 ,  C04B40/00 ,  C08F2/00 ,  C08F290/06

Abstract: PROBLEM TO BE SOLVED: To provide a cement dispersant capable of improving the appearance of a product surface after curing while maintaining the good fluidity of a cement composition and capable of preventing the deterioration of productivity in a centrifugal compaction product area. SOLUTION: The cement dispersant contains a copolymer mixture obtained by copolymerizing a specified monomer (A1) such as ethylenically unsaturated carboxylic acid derivative having a polyoxyalkylene group and a specified monomer (A2) such as (meth)acrylic acid and changing molar ratio (A1)/(A2) at least one time in the mid-way of reaction or a copolymer mixture salt obtained by neutralizing the copolymer mixture with alkali and an antifoaming agent.

公开(公告)号：JP2002003259A

公开(公告)日：2002-01-09

申请号：JP2000186310

申请日：2000-06-21

Applicant: KAO CORP

Inventor： SHIBA DAISUKE ,  SATO HARUYUKI ,  MIZUNO WATARU ,  YAMATO FUJIO ,  HAMADA DAISUKE

IPC: B01F17/34 ,  B01F17/42 ,  B01F17/52 ,  C04B24/26 ,  C04B103/40 ,  C08F216/14 ,  C08F220/28 ,  C08F290/06 ,  C08L29/10 ,  C08L33/14 ,  C08L55/00

Abstract: PROBLEM TO BE SOLVED: To provide a cement dispersing agent for wide use under various conditions of manufacturing concrete, especially at low W/C area, having high- level dispersibility and the reduction effect of viscosity without reducing dispersion performance and high strength of cement. SOLUTION: The cement dispersing agent consists of a copolymer mixture (A) which is obtained by copolymerizing an ethylenic unsaturated carboxylic acid derivatives having polyoxyalkylene groups as monomers (A1) and (meth) acrylic acids as monomers (A2) and changing the molar ratio of (A1)/(A2) at least once in the reaction, and a copolymer (B) obtained by copolymerizing allcenyl ether monomers (B1) and maleic acid or the salt, or maleic anhydride (B2).

公开(公告)号：JP2001322853A

公开(公告)日：2001-11-20

申请号：JP2000140188

申请日：2000-05-12

Applicant: KAO CORP

Inventor： ICHIKAWA HIROTSUGU ,  YAMATO FUJIO

IPC: C04B24/26 ,  C04B28/00 ,  C04B28/04 ,  C04B103/40 ,  C08F290/06

Abstract: PROBLEM TO BE SOLVED: To provide a dispersant for blast-furnace slag fine aggregate, by the use of which segregation of water or gravel in a hydraulic composition containing blast-furnace slag fine aggregate can be inhibited from being caused and workability of the hydraulic composition can be improved. SOLUTION: This dispersant contains a polymer which contains polyoxyalkylene groups having an average degree of condensation of oxyalkylene groups of 2-300.

公开(公告)号：JP2001253750A

公开(公告)日：2001-09-18

申请号：JP2000063570

申请日：2000-03-08

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  TSUJI AKITOSHI

IPC: B28B1/20 ,  C04B14/04 ,  C04B24/26 ,  C04B28/04 ,  C04B103/60 ,  C04B111/20 ,  C08F220/04 ,  C08F220/28 ,  C08F228/02 ,  C08F290/06 ,  C08K3/26 ,  C08L33/00 ,  C08L41/00 ,  C08L55/00

Abstract: PROBLEM TO BE SOLVED: To provide a concrete composition for centrifugal forming which, even when used together with a high-strength material such as siliceous material, is capable of expressing sufficient strength by conventional pressing with centrifugal force. SOLUTION: This composition comprises cement, high-strength material and a water-soluble copolymer used as an admixture, wherein the water-soluble copolymer used is obtained by polymerizing a monomer mixture that contains: (a) at least one vinyl monomer that consists of a compound having a polyoxyalkylene chain(s) formed by subjecting 2-100 mol (on the average) of 2-3C alkylene oxide to addition polymerization; and (b) at least another vinyl monomer that consists of a compound having a carboxy, sulfo or amide group, or its water-soluble salt.

公开(公告)号：JP2001212813A

公开(公告)日：2001-08-07

申请号：JP2000025311

申请日：2000-02-02

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  MIZUNUMA TATSUYA

IPC: C04B28/08 ,  B28B1/14 ,  B28B7/36

Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a concrete structure on which a letter, a figure and the like can be accurately formed. SOLUTION: A method for manufacturing a concrete structure has a process for placing concretes containing mortar of 10-30 seconds flow down time and 250-350 mm flow value, which are measured by a specific method, into a from on which a sheet containing a curing-retarding agent is lined in a required shape.

公开(公告)号：JPH09142905A

公开(公告)日：1997-06-03

申请号：JP30902395

申请日：1995-11-28

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  KITAGAWA KAZUE ,  HONMA YUICHI

IPC: C04B24/26 ,  C08F290/00 ,  C08F290/06

Abstract: PROBLEM TO BE SOLVED: To obtain a concrete admixture excellent in dispersibility, the fluidity holding property of concrete or the like by incorporating a water soluble copolymer of a specific monomer and a copolymerizable monomer or its water soluble salt as essential components. SOLUTION: The water soluble copolymer or its water soluble salt is produced by copolymerizing a monomer expressed by the formula (AO is a 2-3C oxyalkylene and (n) is 50-300 in average) and a monomer copolymerizable with the monomer. And the concrete admixture is obtained by incorporating the water soluble copolymer (salt) as an essential component and as necessary, blending additives such as a high performance water reducing agent, a fluidizing agent and a foaming agent. Further, the monomer expressed by the formula is a polyalkylene glycol monoallyl ether and is obtained by addition-reacting ethylene oxide or propylene oxide to an allyl alcohol. And as the copolymerizable monomer, maleic acid, citraconic acid or a monomer obtained by introducing a 2-3C oxyalkylene group to these acids is suitably used.

公开(公告)号：JPH09132446A

公开(公告)日：1997-05-20

申请号：JP29266695

申请日：1995-11-10

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  IZUMI TATSUO

IPC: C04B24/22 ,  C04B24/30 ,  C08L61/04 ,  C08L61/14

Abstract: PROBLEM TO BE SOLVED: To obtain an excellent dispersibility by incorporating a compd. in which an oxyalkylene group is introduced to an arom. compd. having a NH2 , SH or COOH group in a specified amount and a co-condensate with a material capable of formaldehyde co-condensation. SOLUTION: A compd. A is prepared by adding 2-3C alkylene oxide such as ethylene oxide to the arom. compd. having the NH2 , SH or COOH group such as benzoic acid in an average adding mol number of 2-300mol. Then the compd. A and a material B capable of co-condensing with formaldehyde such as phenol sulfonic acid are added and mixed to an aq. medium in a mol ratio of A/B is 1/99-95/5, and the formaldehyde is added to the medium and the soln. is heated and allowed to react for about 3-30hr to obtain the formaldehyde co-condensate having an average mol.wt. of about 1,000-100,000. Then a concrete admixture consisting essentially of the formaldehyde co-condensate is mixed to a cement in about 0.05-3.0wt.%, especially about 0.1-1.0wt.%, to obtain a hydraulic composition good in fluidity.

公开(公告)号：JPH0812399A

公开(公告)日：1996-01-16

申请号：JP15483994

申请日：1994-07-06

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  SHIMODA MASARO ,  KITAGAWA KAZUE

IPC: C04B24/16 ,  C04B24/26 ,  C04B24/42 ,  C04B103/32 ,  C04B103/50

Abstract: PURPOSE:To lower concrete viscosity, to decrease surface bubbles and to improve compaction by allowing an admixture composition to consist of a copolymer obtained by polymerizing a specific monomer and a monomer selected between two kinds of compounds and a defoaming agent. CONSTITUTION:A copolymer A having the weight-average molecular weight of 3000-1000000 is obtained by polymerizing the monomer (a) expressed by formula I and one or more kinds of the monomers selected from the compounds expressed by formulas II and III in the mol ratio of (a)/(b)=0.1/100-100/100. The copolymer A and the defoaming agent B such as dimethyl polysiloxane are blended in the ratio (weight ratio of solid matter) of A/B=100/0.01-5.0. In the formula I, each of R1 and R2 is hydrogen or methyl, m1 is 0-2, AO is a 2-3C oxyalkylene, (n) is 110-300, X is H or a 1-3C alkyl. In the formulas II and III, each of R3-R5 is H, methyl or (CH2)m2COOM2, R6 is H or methyl, each of M1, M2 and Y is H, an alkali metal, alkaline earth metal, ammonium, an alkylammonium or a substituted alkyl ammonium and m2 is 0-2.

公开(公告)号：JPH0812398A

公开(公告)日：1996-01-16

申请号：JP15483894

申请日：1994-07-06

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  TSUJI AKITOSHI

IPC: C04B24/06 ,  C04B24/10 ,  C04B24/16 ,  C04B24/26 ,  C04B24/38 ,  C04B28/02 ,  C04B103/40 ,  C04B111/70 ,  C07C309/04 ,  C08F290/00 ,  C08F290/06 ,  C09K17/10 ,  C09K17/44

Abstract: PURPOSE:To attain the high fluidity of a hardening material and to improve viscosity reducing property to a clay and reference strength by allowing a cement additive to consist of a copolymer obtained by polymerizing a specific monomer and one or more kinds of monomers selected between two kinds of compounds as a component. CONSTITUTION:The copolymer A having the weight-average molecular weight of 3000-1000000 is obtained by polymerizing the monomer (a) expressed by formula I and one or more kinds of the monomer selected from the compounds expressed by formulas II and III in the mol ratio of (a)/(b)=0.1/100-100/100. The copolymer A and a compound B selected from oxycarboxylic acid or the salt, sugar and sugar alcohol are blended in the ratio of A/B=100/0.01-5.0. In the formula I, each of R1 and R2 is hydrogen or methyl, m1 is 0-2, AO is a 2-3C oxyalkylene, (n) is 110-300, X is H or a 1-3C alkyl. In the formulas II and III, each of R3-R5 is H, methyl or (CH2)m2COOM2, R6 is H or methyl, each of M1, M2 and Y is H, an alkali metal, alkaline earth metal, ammonium, an alkylammonium or a substituted alkylammonium and m2 is 0-2.