公开(公告)号：JP2002068820A

公开(公告)日：2002-03-08

申请号：JP2000264235

申请日：2000-08-31

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI

IPC: C04B28/14

Abstract: PROBLEM TO BE SOLVED: To provide a method for preparing gypsum slurry excellent in water reducing property. SOLUTION: This method for preparing gypsum slurry comprises mixing at least the tempered water having 40-60 mN/m surface tension with gypsum.

公开(公告)号：JP2001220203A

公开(公告)日：2001-08-14

申请号：JP2000030326

申请日：2000-02-08

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI ,  TSUJI AKITOSHI ,  IWAMOTO MITSUHIRO

IPC: C04B28/02 ,  B28B1/20 ,  B28B21/30 ,  B28C7/12 ,  C04B24/26 ,  C04B40/00 ,  F16L9/08

Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a centrifugal product enabling the reduction of amount of the sludge which is discharge during centrifugal molding. SOLUTION: The centrifugal product is manufactured by adding an emulsion comprising a polymer containing an acrylamide as an essential constitution monomer, an emulsifier, water and an oil to a concrete during the centrifugal molding.

公开(公告)号：JP2001114544A

公开(公告)日：2001-04-24

申请号：JP29084999

申请日：1999-10-13

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  TSUJI AKITOSHI ,  FUJITA SHUICHI

IPC: B28B1/20 ,  C04B24/22 ,  C04B24/38 ,  C04B103/32 ,  C04B103/40

Abstract: PROBLEM TO BE SOLVED: To obtain an additive for centrifugally molded concrete capable of enabling the amount of a discharged sludge and the solid content thereof to be decreased without lowering fluidity. SOLUTION: This additive for centrifugally molded concrete contains a polysaccharide derivative wherein the hydrogen of the hydroxy groups of a part of or the whole of polysaccharides or an alkylated or hydroxyalkylated derivative thereof are substituted with (A) a specific hydrophobic substituent, and (B) a specified ionic hydrophilic substituent.

公开(公告)号：JPH09241057A

公开(公告)日：1997-09-16

申请号：JP4972596

申请日：1996-03-07

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI

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

Abstract: PROBLEM TO BE SOLVED: To obtain an admixture excellent in property of ensuring flowability of a hydraulic compsn. such as cement paste, mortar or fresh concrete and property of retaining the f1owability and less liable to retard setting. SOLUTION: This admixture contains a copolymer of a polyalkylene glycol monoester monomer (a) having an unsatd. bond represented by the formula with a monomer (b) copolymerizable with the monomer (a) as the principal component. In the formula, R1 is H or methyl, A0 is 2-3C oxyalkylene, (n) is a number of 100-300 and R2 is H or 1-9C alkyl.

公开(公告)号：JPH0891898A

公开(公告)日：1996-04-09

申请号：JP22638494

申请日：1994-09-21

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI ,  SHIMODA MASARO ,  KITAGAWA KAZUE ,  SATO HARUYUKI

IPC: C04B24/30 ,  C04B24/22 ,  C04B24/24 ,  C04B24/26 ,  C04B24/32 ,  C04B24/38 ,  C04B40/00 ,  C04B103/32 ,  C04B103/44

Abstract: PURPOSE: To obtain a concrete admixture showing superior fluidity at a low amount to be added, having large material separation resistance and being superior in self-filling property. CONSTITUTION: This self-filling concrete admixture is composed of a formaldhyde cocondensation product of one kind or more (A) selected from aromatic compounds introduced with 2-3C oxyalkylene group of 1-300mol and one kind or more (B) selected from aromatic compounds having a carboxyl group or its neutralized salt (a) and water-soluble high polymer (b) as indispensable components.

公开(公告)号：JPH07315900A

公开(公告)日：1995-12-05

申请号：JP10549694

申请日：1994-05-19

Applicant: KAO CORP

Inventor： SATO HARUYUKI ,  YAMATO FUJIO ,  FUJITA SHUICHI ,  KITAGAWA KAZUE ,  SHIMODA MASARO

IPC: C04B24/38 ,  C08L25/00 ,  C08L25/18 ,  C08L33/00 ,  C08L33/04 ,  C08L71/02

Abstract: PURPOSE:To prepare the cement dispersant enhancing the flowability of a con crete, a mortar, a paste, etc., and improving applicability and workability by adding the reaction product of a specific glycidyl ether compound, etc., with a polysaccharide to a cement composition. CONSTITUTION:0.02-3.0 pts.wt. of a product having a weight-average mol.wt. of 3000-500000 and obtained by reacting (A) a 1-4C alcohol-alkylene oxide adduct glycidyl-ether product of formula I (R is 1-4C alkyl; AO is 2-3C oxylalkylene group; (n) is 2-3000) or a 1-4C alcohol-alkylene oxide adduct halogenation product of formula II (X is Br, Cl, I; Y is H, methyl) with (B) a polysaccharide and/or its derivative in a weight ratio of 5/95 to 95/5 is added as a dispersing agent in an amount of 0.02-3.0 pts.wt. to 100 pts.wt. of a cement. If necessary, a known dispersant such as a polycarboxylic acid salt is simultaneously used.

公开(公告)号：JPH07109158A

公开(公告)日：1995-04-25

申请号：JP25716693

申请日：1993-10-14

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI ,  YADOKORO YOSHIAKI ,  SATO HARUYUKI

IPC: B01F17/52 ,  C04B24/30 ,  C08L61/00 ,  C08L61/04 ,  C08L61/14 ,  C08L61/18

Abstract: PURPOSE:To improve a flow property and current retention property of a hydraulic composition by using a cement dispersant composed mainly of a specific formaldehyde co-condensate. CONSTITUTION:A formaldehyde co-condensate having a weight average molecular weight of 3000-100000 is obtained by reacting 5-95wt.% of the reaction product obtained from anlamino acid, an aromatic compound and 0.5-1.5 mole of formaldehyde with 95-5wt.% of a material of formula I or formula II (R1 to R4 are H or 1-3C alkyl; A1O and A2O are 2-3C oxyalkylene; n1 and n22 are 1-100) which is co-condensable with formaldehyde. The formaldehyde co- condensate is compounded with 5-95wt.% of a concrete dispersant, e.g. a co- condensate of naphthalene sulfonic acid salt with formaldehyde to obtain a cement dispersant. The cement is compounded with 0.05-3.0wt.% of the cement dispersant.

公开(公告)号：JPH06144906A

公开(公告)日：1994-05-24

申请号：JP29557892

申请日：1992-11-05

Applicant: KAO CORP

Inventor： FUJITA SHUICHI ,  YAMATO FUJIO

IPC: C04B24/26 ,  C08F20/26 ,  C08F220/02 ,  C08F220/04 ,  C08F220/30 ,  C08F222/00 ,  C08F222/02 ,  C08F290/00 ,  C08F299/02

Abstract: PURPOSE:To prevent slump loss by combining a copolymer of a monomer expressed by a specific formula and an acrylic acid based monomer and/or an unsaturated dicarboxylic acid based monomer as a main component. CONSTITUTION:The monomer expressed by the formula I (R1) is H or methyl, R2O is 2-4C oxyalkylene, n is 3-100, R3 is 1-9C alkyl), the acrylic acid based monomer and/or the unsaturated dicarboxylic acid based monomer expressed by formulas II, III (each of R4 and R7 is H or methyl, each of R5-6 and R8-9 is H, methyl or (CH2)mCO2M1, M1 is H, univalent metal, ammonium or (substituted) amino, M2 is bivalent metal, m is 0-2) and a polymerization initiator are added into a solvent and polymerized at 0-120 deg.C while mixing. The formed copolymer has 1000-500000 molecular weight, contains (A)/(B) of (10-99)/(90-1) by wt.% and is excellent in dispersibility and slump holding property. Next, a concrete is obtained by adding 0.01-1.0wt.% cement mixing agent mainly compose of the copolymer into a concrete material.

公开(公告)号：JPH0597485A

公开(公告)日：1993-04-20

申请号：JP25383091

申请日：1991-10-01

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI ,  IIZUKA MASANORI

IPC: C04B24/22 ,  C04B24/30

Abstract: PURPOSE:To enhance fluidity and to improve workability by additionally co- condensing a specified compound by formaldehyde and incorporating the obtained co-condensate as a main component. CONSTITUTION:Naphthalenesulfonic acid formaldehyde condensate (prepolymer) A having 6000-13000 weight average molecular weight is obtained by reacting naphthalene with formaldehyde. Then the prepolymer A, a compound B such as anilinesulfonic acid shown in an expression (X shows H and alkali metal) or sodium salt thereof and at least one kind of compound C selected from a compound containing hydrogen or lower alkyl (e.g. 1-6C straight chain such as methyl and ethyl or branched chain alkyl), a compound such as melamine and a compound such as urea are blended so that the constitutional molar ratio of components A, B and C is regulated to (0.1-0.3):(0.2-1.0):(0.2-1.0). Thereafter, formaldehyde is added at 1-5 moles for total mole number 1 of the components A-C and allowed to react therewith at pH4-11. Thereby, a cement admixture is produced which contains a co-condensate having 2000-50000 weight average molecular weight.

公开(公告)号：JPH0517188A

公开(公告)日：1993-01-26

申请号：JP16564091

申请日：1991-07-05

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  IZUMI TATSUO ,  FUJITA SHUICHI ,  YADOKORO YOSHIAKI ,  KITAGAWA KAZUE

IPC: C04B24/22 ,  C04B24/30 ,  C08G14/06

Abstract: PURPOSE:To obtain a cement admixture capable of reducing slump loss caused in a hydraulic cement composition by using a formaldehyde adduct cocondensate of 3-5 components composed of specific compounds as a component. CONSTITUTION:A formaldehyde adduct cocondensate of 3-5 components composed of compounds expressed by formulas I, II and/or III and compounds expressed by formulas IV and/or V is used as a component of a cement admixture. In the formula, R denotes H or lower alkyl; X denotes H, alkyl, carboxyl or its alkali metallic salt, sulfone group or its alkali metallic salt, OH or methoxy group; Y denotes carboxyl or its alkali metallic salt; groups Z denote H or -CH2SO3X (X denotes alkali metal), provided that at least two of the groups Z denote H. The formaldehyde adduct cocondensate to be used has a three-dimensional molecular structure and it is presumed that the slump loss can be reduced thereby.