公开(公告)号：JPH0940446A

公开(公告)日：1997-02-10

申请号：JP18891295

申请日：1995-07-25

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  KITAGAWA KAZUE ,  TSUJI AKITOSHI

IPC: C04B24/16 ,  C04B24/26

Abstract: PROBLEM TO BE SOLVED: To obtain a concrete admixture capable of providing a low viscosity and a specified flow rate and being superior in slump holdability by using specific two kinds of copolymer components as indispensable constituents. SOLUTION: A first component is a copolymer obtained by polymerizing (a) a monomer expressed by formula I (R1-2 ; H, methyle, m1 ; 0-2, AO; a 2-3C oxyalkylene, n1 ; 1-30, X; H, a 1-3C alkyl) with (b) one or more kinds of monomers selected from among compounds of formulae II, III (R3-5 ; H, methyl, (CH2 )m2 COOM2 , R6 ; H, methyl, M1-2 and Y1 ; an alkali metal, alkaline earthy metal, ammonium, alkyl ammonium, m2 ; 0-2), and a second component is a copolymer obtained by copolymerizing (c) a monomer expressed by formula IV (R7-8 ; H, methyl, m3 ; 0-2, AO; a 2-3C oxyalkylene, n2 ; 100-300) with (d) one or more kinds of monomers selected from among the compounds expressed by formulae V, VI (R9-11 ; H, methyl, (CH2 )m4 COOM4 , R12 ; H, methyl, M3-4 and Y2 ; the same as M1-2 and Y1 , m4 ; 0-2.

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：JPH07277796A

公开(公告)日：1995-10-24

申请号：JP7485794

申请日：1994-04-13

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  KANZAKI SHOJI ,  KITAGAWA KAZUE

IPC: C04B24/04 ,  C04B24/18 ,  C04B24/22 ,  C04B24/26 ,  C04B24/30 ,  C04B24/32 ,  C04B28/02 ,  C04B38/02 ,  C04B40/00 ,  C04B103/30 ,  C04B103/32 ,  C04B103/40 ,  C04B103/50

Abstract: PURPOSE:To obtain a foam-containing concrete having excellent foaming properties, fineness and stability in a cement composition system, by using a foam- entraining agent having a specific chemical composition. CONSTITUTION:This foam-entraining agent for concrete is shown by the general formula R1O(AO)nCH2COOX [R1 is a 6-26C alkyl or a group of formula I; R2 is H or a 1-9C alkyl; AO is a 2-3C oxyalkylene group; (n) is 1-100; X is H, an alkali (alkaline earth) metal, ammonium, an alkylammonium, or a substituted alkylammonium]. The foam-entraining is optionally mixed with a cement admixture and further an antifoaming agent. The cement admixture used with the foam-entraining agent is selected from a naphthalenesulfonic acid formaldehyde condensate, a melamine sulfonate formaldehyde condensate and a ligninsulfonate. The foam-entraining agent is used for cellular concrete, as a foaming agent for ALC or for a concrete composition mixed with fly ash.

公开(公告)号：JPH0524894A

公开(公告)日：1993-02-02

申请号：JP18095891

申请日：1991-07-22

Applicant: KAO CORP

Inventor： IZUMI TATSUO ,  YADOKORO YOSHIAKI ,  MIZUNUMA TATSUYA ,  KITAGAWA KAZUE

IPC: C04B24/22 ,  C04B24/26 ,  C04B24/30

Abstract: PURPOSE:To provide the title admixture capable of improving the water reduc ing effect, slump loss-preventive effect and strength-developing effect for con crete, comprising a specific ingredient and a condensation polymer produced by condensation of phenol, etc., with formaldehyde in the presence of an amino- based polymerization inhibitor. CONSTITUTION:Firstly, (A) a condensation polymer 1000-50000 in weight-average molecular weight is prepared by condensation at a pH of 3-12 of at least one compound selected from phenol (derivatives), melamine (derivatives) and urea with formaldehyde in the presence of an amino-based polymerization inhibitor such as N-methyl sulfonated urea. Then, (B) a water-soluble polymer 1000-50000 in molecular weight made up of constituent unit of the formula [A1 and B are each-COOZ (Z is H, etc.)] is prepared by amidation of a polymer formed by polymerizing at least one compound selected from acrylic acid, etc., through radical polymerization process. The objective concrete admixture is composed of 30-95wt.% of the component A and 70-5wt.% of the component B.

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.

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

IPC: C04B24/22 ,  C04B24/30 ,  C08G8/00 ,  C08G8/10 ,  C08G8/18 ,  C08G14/06 ,  C08G14/08 ,  C08G14/10

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.

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：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：JPH07247148A

公开(公告)日：1995-09-26

申请号：JP3849594

申请日：1994-03-09

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  KITAGAWA KAZUE ,  SATO HARUYUKI

IPC: C04B24/20 ,  C04B24/26 ,  C08F290/00 ,  C08F290/06

Abstract: PURPOSE:To improve fluidity, fluidity-retaining property and foamretaining property of a hydraulic composition by including a specific copolymer as an essential component of a concrete admixture. CONSTITUTION:0.1-50.0mol% of total amount of 0.1-50mol% of a monomer of formula 1 [R1 is H or methyl; (n1) is 4-6] and 99-50mol% of a monomer of formula II [R2 is R1; (n2) is 0-2; (n3) is 1-300; A0 is a 2-3C oxyalkylene; X is H or a 1-3C alkyl] is copolymerized with 99.9-50mol% of a monomer formula III and/or formula IV [R3 to R5 each is H, methyl or (CH2)mlCOOM2; Y is CO3M3 or formula V; M1 to M4 each is H, an alkali (alkaline earth) metal, ammonium or a (substituted) amino] in water and a 1-4C alcohol in the presence of an aqueous polymerization initiator to provide the concrete admixture consisting of a copolymer having 1000-500000 weight-average molecular weight (measured by gel permeation chromatography method/sodium polystyrene sulfonate which is a standard substance/water system). This concrete admixture is mixed with 5-50wt.% of a well-known admixture.