公开(公告)号：JP2001215185A

公开(公告)日：2001-08-10

申请号：JP2000024020

申请日：2000-02-01

Applicant: KAO CORP

Inventor： SHIBA DAISUKE ,  YAMATO FUJIO ,  SATO TAKAHIRO ,  SHIROTA KYOICHI ,  HAMADA DAISUKE

IPC: G01N11/06 ,  G01N11/00

Abstract: PROBLEM TO BE SOLVED: To provide a method capable of simply evaluating the separation resistance of concrete, especially, highly flowable concrete with good reproducibility. SOLUTION: The flow-down time of mortar obtained by separating coarse aggregate from concrete is measured by an apparatus comprising a tapered cylinder having a specific dimension.

公开(公告)号：JP2000073060A

公开(公告)日：2000-03-07

申请号：JP24480198

申请日：1998-08-31

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  MIZUNUMA TATSUYA ,  ISHII YASUO

IPC: E02D3/00 ,  C08L71/02 ,  C09K17/14 ,  C09K103/00

Abstract: PROBLEM TO BE SOLVED: To obtain the subject improving agent capable of exhibiting excellent compacting property without depending on kinds of earth and sand by including a specific alcohol ethoxylate. SOLUTION: This improving agent comprises a secondary alcohol ethoxylate of the formula [(m+n) is 7-11; and X is an average addition mole number of ethylene oxide of 5-12]. A secondary alcohol ethoxylate having 12-14 Griffin HLB number, especially represented by the formula [(m+n) is 9-11; and X is 7-11] is preferable as the secondary alcohol ethoxylate of the formula. It is preferable that preferably >=50 wt.%, further preferably >=80 wt.%, especially preferably substantially all of the improving agent comprises the secondary alcohol ethoxylate of the formula. An amount of the improving agent added to earth and sand is preferably 0.001-2 pts.wt. based on 100 pts.wt. of earth and sand. Thereby, excellent compacting property can be expected without being limited by kinds of earth and sand and qualities, amounts, etc. of organic substances contained in earth and sand.

公开(公告)号：JP2000044309A

公开(公告)日：2000-02-15

申请号：JP21546498

申请日：1998-07-30

Applicant: KAO CORP

Inventor： HAMADA DAISUKE ,  SHIROTA KYOICHI ,  YAMATO FUJIO

IPC: C04B24/12 ,  C04B24/26 ,  C04B28/00 ,  C04B103/30

Abstract: PROBLEM TO BE SOLVED: To obtain an additive capable of imparting fluidity and fluidity-keeping properties even to fine aggregates produced at any place by including a vinyl- based polymer having an oxyalkylene group having specific numbers of carbons in a molecule, and a specified average molecular weight, and a cationic compound having a tertiary N atom. SOLUTION: This additive comprises a vinyl-based polymer having a 2-3C oxyalkylene group in a molecule, and 500-500,000 number average molecular weight (e.g. methanol-EO-monoester of methacrylic acid/Na acrylate), and a cationic compound having a tertiary N atom, preferably a compound having an 8-36C hydrophobic group and/or of formulas I-V (R1 and R2 are each a 10-24C alkyl, an alkenyl or a β-hydroxyalkyl; R3 to R5 are each a 1-5C alkyl, a hydroxyalkyl, benzyl or the like; R6 is an 8-36C alkyl, an alkenyl or a β- hydroxyalkyl; X1 is a counterion; Y1 is R6, R6COOCH2, R6CONHCH2 or R6OCH2).

公开(公告)号：JP2000026144A

公开(公告)日：2000-01-25

申请号：JP21047198

申请日：1998-07-08

Applicant: KAO CORP

Inventor： YAMATO FUJIO

IPC: C04B24/06 ,  C04B24/26 ,  C04B40/00 ,  C04B103/30 ,  C04B103/44

Abstract: PROBLEM TO BE SOLVED: To obtain a hardened body excellent in surface appearance with less bleeding and good work efficiency by adding an additive contg. a copolymer of a specified ester compd. monomer and a compd. monomer such as an acrylate monomer, and an oxycarboxylic acid in a specified ratio to a hydraulic compsn. SOLUTION: A monomer of formula I [where R1 and R2 are each H or methyl, (m) is 0-2, AO is 2-3C oxyalkylene, (n) is 30-300 and X is H or 1-3C alkyl] and one or more monomers of formula II or III [where R3-R5 are each H, methyl or (CH2)m2COOM2, R6 is H or methyl, M1, M2 and Y are each H or a cation and m2 is 0-2] are polymerized in a molar ratio of 1:100 to 100:100 to a wt. average mol.wt. of 3,000-500,000. The resultant copolymer is mixed with a 4-10C oxycarboxylic acid, preferably gluconic acid in a weight ratio of 100:60 to 100:150 to obtain the objective admixture applicable to a hydraulic compsn. having

公开(公告)号：JPH11292640A

公开(公告)日：1999-10-26

申请号：JP9443898

申请日：1998-04-07

Applicant: KAO CORP

Inventor： YAMATO FUJIO

IPC: C04B24/26 ,  C04B28/06 ,  C04B35/632 ,  C04B35/66 ,  C04B103/00 ,  C04B111/28 ,  C09K21/14

Abstract: PROBLEM TO BE SOLVED: To obtain an additive for a refractory capable of enhancing physical properties such as bending strength, compressive strength and bulk specific gravity of the refractory. SOLUTION: This additive for a refractory consists essentially of a water-soluble copolymer obtained by polymerizing a monomeric mixture containing one or more kinds of (a) vinyl monomers comprising a compound having a polyoxyalkylene chain prepared by adding a 2-3C alkylene oxide in an average number of added mol of 2-300 mol and one or more kinds of (b) vinyl monomers comprising a compound having carboxyl group, sulfonate group or amide group or its water-soluble salt.

公开(公告)号：JPH11157897A

公开(公告)日：1999-06-15

申请号：JP33137797

申请日：1997-12-02

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  SATO HARUYUKI ,  HAMADA DAISUKE ,  SATO TAKAHIRO ,  SHIROTA KYOICHI

IPC: C04B24/16 ,  C04B24/26 ,  C04B24/32 ,  C04B40/00 ,  C04B103/30 ,  C08F220/28 ,  C08F290/06

Abstract: PROBLEM TO BE SOLVED: To obtain a concrete admixture without viscosity reduction and the retardation of solidification by polymerizing an esterification compd. between polyethylene glycol sealing lower alkyl at a one-side terminal having plural different chain lengths and (meth)acrylic acid and the (meth)acrylic acid in a specified weight ratio. SOLUTION: A monomer (A) represented by formula I, a monomer (B) represented by formula II, a monomer (C) represented by formula III and further, a monomer (D) represented by formula IV, V or VI and a monomer (E) represented by formula VII are polymerized in a weight ration of A/B/C=(51-80)/(10-45)/(1-40), a weight ratio (A+D+E)/B/C=(51-80)/(10-45)/(1-40) and a weight ratio A/(D+E)=(50-100)/(0-50) to obtain an objective admixture comprising a copolymer having a wt. average mol.wt. of 10,000-200,000. In the formulae, R1 -R4 , R6 , R7 , R10 , R11 and R13 are each H or methyl, R8 and R9 are each 2-4C alkylene or the like; R12 is 1-6c alkyl or the like; AO is 2-3C oxyalkylene; X1 and X2 are each H or 1-3C alkyl; M1 -M7 are each H, an alkali metal or the like; n1 is 80-300; and n2 is 5-30.

公开(公告)号：JPH1112011A

公开(公告)日：1999-01-19

申请号：JP16263797

申请日：1997-06-19

Applicant: KAO CORP

Inventor： YAMATO FUJIO

IPC: C04B24/38 ,  C04B28/04 ,  C04B103/44

Abstract: PROBLEM TO BE SOLVED: To obtain an additive excellent in finishing properties by a plasterer, by including a polysaccharide derivative prepared by substituting the hydrogen atoms of the hydroxyl groups of a polysaccharide or its alkylated derivative with a hydrophobic substituent group containing a hydrocarbon chain as a partial structure and a hydrophilic substituent group containing a group selected from a sulfonic group, etc., as a partial structure. SOLUTION: This additive for a mortar contains a polysaccharide derivative obtained by substituting hydrogen atoms of a part or the whole hydroxyl groups of a polysaccharide or its alkylated or hydroxy alkylated derivative with (A) a hydrophobic substituent group containing a 8-40C hydrocarbon chain as a partial structure and (B) an ionic hydrophilic substituent group containing one or more groups selected from the group consisting of a sulfonic group, a carboxyl group, a sulfate group and their salts as a partial structure. The admixture is mixed with a cement material and a fine aggregate to give a mortar composition. The degree of substitution of the substituent A is 0.0001-1 based on the constituent monosaccharide residue and that of the substituent B is 0.001-2.

公开(公告)号：JPH09248438A

公开(公告)日：1997-09-22

申请号：JP5509996

申请日：1996-03-12

Applicant: KAO CORP

Inventor： SATO HARUYUKI ,  UKIANA TOSHINAO ,  OMAE KAORU ,  SHIBA DAISUKE ,  YAMATO FUJIO ,  KONO YOSHINAO

IPC: C04B24/24 ,  B01F17/52 ,  C04B24/26 ,  C04B24/32 ,  C09C3/10

Abstract: PROBLEM TO BE SOLVED: To realize the lowering of viscosity in a predetermined flowing state by adding a water-soluble cocondensate or watersoluble copolymer into which an oxypropylene group and/or a random polymerized chain of an oxypropylene group and an oxyethylene group is introduced as an essential component. SOLUTION: A water-soluble cocondensate or water-soluble copolymer into which an oxypropylene. group and/or a random polymerized chain (A) of an oxybutylene group and an oxyethylene group is introduced is contained as an essential component. When an oxypropylene group and/or a random polymerized chain (MO chain) of an oxybutylene group and an oxyethylene group is introduced into an AO chain, viscosity is reduced to a large extent as compared with such a case that a block polymerized chain of a polyethylene oxide, polypropylene oxide chain or a polybutylene oxide chain is introduced. In order to more stabilize the effect reducing viscosity, it is pref. that an addition mol number of an oxypropylene group and/or an oxybutylene group is 10% of an MO chain or more.

公开(公告)号：JPH09188554A

公开(公告)日：1997-07-22

申请号：JP196696

申请日：1996-01-10

Applicant: NIPPON CONCRETE IND CO LTD ,  KAO CORP

Inventor： MARUYAMA TAKEHIKO ,  TOMIYAMA KATSUZO ,  YAMATO FUJIO ,  OBATA KENICHI

IPC: C04B24/22 ,  C04B24/26 ,  C04B28/02 ,  C04B40/00

Abstract: PROBLEM TO BE SOLVED: To reduce the compaction in placing a concrete and improve the environment in noise by including a specific copolymer and a water-soluble salt of a naphthalenesulfonic acid-formaldehyde condensate in an admixture. SOLUTION: This admixture is obtained by blending a copolymer, prepared by eopolymerizing a monomer of formula I [R1 and R2 are each H or methyl; (m1 ) is 0-2; AO is a 2-3C oxyalkylene; (n) is 2-100; X is H or a 1-3C alkyll with a monomer of formula II [R3 to R6 are each H, methyl or one to two COOM groups; M is H, an alkali(alkaline earth) metal, ammonium or a (substituted) alkylammonium] or formula III [R7 is R1 ; Y is H, an alkali(alkaline earth) metal, ammonium or a (substituted) alkylammonium] at (1/100) to (100/100) molar ratio and having 2000-500000 weight-average molecular weight (measured by a get permeation chromatography/expressed in terms of sodium styrenesulfonate) with a water-soluble salt of a naphthalenesulfonic acid- formaldehyde condensate having 2000-500000 weight-average molecular weight so as to provide (100/1) to (100/80) weight ratio of the copolymer to the water- soluble salt of the naphthalenesulfonlc acid-formaldehyde condensate.

公开(公告)号：JPH0925149A

公开(公告)日：1997-01-28

申请号：JP17591295

申请日：1995-07-12

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  KITAGAWA KAZUE ,  TADOKORO TAKAAKI ,  YAMAMURO HODAKA

IPC: C04B24/06 ,  C04B24/10 ,  C04B24/22 ,  C04B24/30 ,  C04B24/38 ,  C04B40/00 ,  C04B103/22 ,  C04B103/32

Abstract: PROBLEM TO BE SOLVED: To improve the deterioration of fluidity with the lapse of time at the temp. of concrete in a high temp. region exceeding 30 deg.C. SOLUTION: This concrete admixture consists essentially of a component (a) and a component (b) described hereunder. The component (a) is the neutralized salt of a formaldehyde co-condensation product of (A) one or more kinds selected from aromatic compounds into which a 2-3C oxyalkylene group of 1-300mol is introduced, (B) one or more kinds selected from aromatic compounds each having a sulfonic group and (C) one or more kinds selected from aromatic compounds each having a carboxyl group. The component (b) is one or more kinds of compounds selected from an oxycarboxylic acid and its salts, sugar and sugar alcohol.