公开(公告)号：JPH08217507A

公开(公告)日：1996-08-27

申请号：JP3077895

申请日：1995-02-20

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  SATO HARUYUKI ,  FUJITA SHUICHI ,  HONMA YUICHI

IPC: B01F17/12 ,  B01F17/52 ,  C04B24/22 ,  C04B24/30 ,  C04B28/16 ,  C08L61/00 ,  C08L61/34 ,  C08L71/00 ,  C08L71/02

Abstract: PURPOSE: To improve the dispersibility and foam stability of an aq. gypsum slurry by using the condensate (neutral salt) of the aromatic compd. having an introduced oxyalkylene group and the aromatic compd. having a carboxyl with formaldehyde as the essential component. CONSTITUTION: 1-98mol% aromatic compd. having an introduced 2-3C oxyalkylene group, 1-98mol% aromatic compd. contg. a carboxyl and 1-98mol% aromatic compd. having a sulfonic group, if necessary, are charged into a reaction vessel and agitated at 70-90 deg.C, aq. formalin is dripped in 1 to 4hr, and the mixture is condensed under reflux and neutralized, as required, to obtain the dispersant for an aq. gypsum slurry consisting of the formaldehyde condensate (neutral salt) having 3,000-100,000 weight average mol.wt. (the condensation degree calculated from the mol.wt. by the gel permeation chromatography/ polystyrene sodium sulfonate conversion method).

公开(公告)号：JPH0812984A

公开(公告)日：1996-01-16

申请号：JP15093294

申请日：1994-07-01

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI

IPC: B01F17/52 ,  C08F220/04 ,  C08F222/02 ,  C08F290/00 ,  C08F290/06 ,  C08L33/00 ,  C08L33/04 ,  C10L1/32 ,  C10L10/18

Abstract: PURPOSE:To obtain a dispersion stabilizer which gives a coal water slurry improved in dispersion stability and fluidity by copolymerizing two specified monomers. CONSTITUTION:0.1-100mol% monomer of formula I (wherein R1 and R2 are each H or methyl; m is 0 to 2; AO is a 2-3C oxyalkylene; n is 110 to 300; and X is H or a 1-3C alkyl) is copolymerized with 100mol% monomer of formula II and/or formula III [wherein R3, R4 and R5 are each H, methyl or (CH2)m2 COOM2; R6 is H or methyl; M1, M2 and Y are each H, an alkali (alkaline earth) metal, ammonium, or a (substituted)alkylammonium; and m2 is 0 to 2] in the presence of a polymerization initiator to give the objective dispersion stabilizer comprising a copolymer having a weight-average molecular weight (by the gel permeation chromatography, in terms of sodium polystyrenesulfonate) of 1,000 to 500,000. A coal water slurry is mixed with this dispersion stabilizer in an amount of 0.05-3.0wt.% based on the coal.

公开(公告)号：JPH07247150A

公开(公告)日：1995-09-26

申请号：JP3849494

申请日：1994-03-09

Applicant: KAO CORP

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

IPC: C04B24/20 ,  C04B24/26 ,  C04B111/32 ,  C08F290/00 ,  C08F290/06

Abstract: PURPOSE:To improve fluidity, fluidity-retaining property and foam-retaining property of a hydraulic composition by including a specific copolymer as an essential component. CONSTITUTION:10-99wt.% of total amount f 5-95wt.% of formula I (R1 is H or methyl; (m1) is 0-2; (n1) is 110-300; X is H or a 1-3C alkyl; A0 is a 2-3C oxyalkylene) and 5-95wt.% of a monomer of formula II [R2 is R1; m2 is (m1); (n2) is 1-30] is copolymerized with 90-1wt.% of a monomer formula II and/or formula IV [R6 is R1; R3 to R5 each is H, methyl or (CH2)m3COOM3; Y is SO3M3 or formula V; M1 to M4 each is H, alkali (alkaline earth) metal, ammonium or a (substituted) amino] to provide the objective concrete admixture consisting of a copolymer having 1000-50000 weight-average molecular weight (measured by gel permeation chromatography/sodium polystyrene-sulfonate/water system). This admixture is blended with 5-50wt.% of well-known cement admixture such as formaldehyde condensate of naphthalenesulfonic acid salt.

公开(公告)号：JPH07247147A

公开(公告)日：1995-09-26

申请号：JP3849694

申请日：1994-03-09

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI ,  SHIMODA MASARO

IPC: C04B24/22

Abstract: PURPOSE:To improve fluidity and fluidity-retaining property of a hydraulic composition by including a neutralized salt of formaldehyde co-condensate of a specific sulfonate as main component of a cement admixture. CONSTITUTION:1mol of total amount of 99-50mol% of a compound of formula I (R is H or

公开(公告)号：JPH07223852A

公开(公告)日：1995-08-22

申请号：JP10109994

申请日：1994-05-16

Applicant: KAO CORP

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

IPC: C04B24/16 ,  C04B24/26 ,  C04B24/32 ,  C04B103/32 ,  C04B103/40 ,  C08F290/00 ,  C08F290/06 ,  C08L57/00

Abstract: PURPOSE:To obtain a concrete admixture providing excellent slump retaining properties for many hours, comprising a copolymer of a specific polyalkyelne glycol monoester-based monomer and an unsaturated organic acid-based monomer as an essential component. CONSTITUTION:(A) A monomer of formula I (R1 and R2 each is H or methyl; m1 is 0-2; AO is a 2-3C oxyalkylene; (n) is 110-300; X is H or a 1-3C alkyl) is copolymerized with (B) one or more monomers (e.g., acrylic acid or allylsulfonic acid) selected from compounds of formula II and formula III [R3 to R5 each is H, methyl, (CH2)m2 or COOM2; R6 is H or methyl; M1, M2 and Y each is H, an alkali metal, an alkaline earth metal, ammonium, an alkylammonium or a substituted alkylammonium; m2 is 0-2]. The prepared copolymer is contained as an essential component to produce a concrete admixture. Methoxypolyethylene glycol may be cited as the concrete example of the monomer of formula I.

公开(公告)号：JPH06321596A

公开(公告)日：1994-11-22

申请号：JP11443793

申请日：1993-05-17

Applicant: KAO CORP

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

IPC: C04B24/26

Abstract: PURPOSE:To provide a concrete admixture facilitating the quality control of concrete with small variations in the air quantity and fluidity of concrete for a long time, containing, as the essential ingredient, a copolymer prepared by copolymerization between a specific polyethylene-polypropylene glycol monoester (of formula A or B) and an acrylic acid monomer or unsaturated dicarboxylic acid monomer (of formula C). CONSTITUTION:The objective concrete admixture containing, as the essential ingredient, a copolymer prepared by copolymerization between (1) a compound of formula A (symbols in the formula are common with those in formulas B and C; R1-R5 are each H or methyl; R6 and R7 are each (CH2)m3COOM2, H or methyl; m1-m3 are each 0-2; n1 and n4 are each 1-10; n2 and n3 are each 4-50; X1 and X2 are each H or 1-3C alkyl; M1 and M2 are each H, monovalent metal, NH4, NH2 or substituted amino group) or formula B and (2) a compound of formula C at a weight ratio of (10-99): (90-1) (this proportion is suitable for the foam stability of the resultant concrete.). The weight-average molecular weight of this copolymer is preferably 1000-1000000. The amount of the admixture to be added to concrete is preferably 0.02-1.0wt.%, on a solid basis, based on cement.

公开(公告)号：JPH06127997A

公开(公告)日：1994-05-10

申请号：JP27857792

申请日：1992-10-16

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI

IPC: C04B24/22 ,  C04B24/30 ,  C04B28/02

Abstract: PURPOSE:To improve a flow property of a hydraulic composition of a cement paste, mortar and concrete, etc., and the flow holding property. CONSTITUTION:A cement admixture consists of a condensation product expressed by formula as an essential component. Here in formula, R is H or a 1-12C alkyl group, AO is a 2-3C oxyalkylene group, X is a monovalent or divalent metal, an ammonium group, an amino group, a substituted amino group, (n) is a number of 3-100 and (m) is a number of 5-100. It gives a remarkable flow property in a low addition quantity and also is superior to the holding property of a slum and is less setting delay, thus it is used for various uses.

公开(公告)号：JPH0585787A

公开(公告)日：1993-04-06

申请号：JP24568491

申请日：1991-09-25

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  FUJITA SHUICHI ,  IIZUKA MASANORI

IPC: C04B24/16 ,  C04B24/32

Abstract: PURPOSE:To provide a separation reducing agent for hydraulic compositions such as cement milk, mortar, concrete. CONSTITUTION:This separation reducing agent for the hydraulic cement compositions consists of a reaction product of an alkylen oxide addition compound in which >=20mols of alkylene oxides are added to a primary alcohol having >=12 carbon elements in the molecule, a primary mercaptan or an alkyl phenol with a compound having >=1 epoxy group. The separation reducing agent is superior to the suppression for bleeding of the hydraulic cement composition and the reduciability of aggregate separation, thereby a hydraulic cement composition being superior to the quality by using it for a cement paste, mortar and concrete for engineering works, buildings, grouting, etc., is obtained.

公开(公告)号：JPH054846A

公开(公告)日：1993-01-14

申请号：JP16564291

申请日：1991-07-05

Applicant: KAO CORP

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

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

Abstract: PURPOSE:To improve slump loss by using a cement admixture containing a co-condensate prepared by subjecting plural compound shown by specific general formulas and melamine and/or urea to addition co-condensation with formaldehyde. CONSTITUTION:Given amounts of (A) a compound shown by formula I and (B) a compound shown by formula II (R is H or lower alkyl; X is alkali metal) and (C) melamine shown by formula III (Y is H or CH2SO3X) and/or (D) urea shown by formula IV (at least two of Y are H) are weighed, mixed with water and adjusted to proper solid content concentration and pH. The solution is heated to about 80-90 deg.C, to which formalin corresponding to a given amount of formaldehyde is dripped. The compounds are subjected to addition co- condensation at pH 7-11 while stirring to give a co-condensate having a constituent molecular ratio of (A)/(B)/[(C)+(D)]=0.1-1.0/0.1-1.0/0.1-1.0 and 1,000-50,000 molecular weight. The co-condensate is used alone as a cement admixture or together with another admixture and mixed with cement.

公开(公告)号：JPH04119954A

公开(公告)日：1992-04-21

申请号：JP24072490

申请日：1990-09-11

Applicant: KAO CORP

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

IPC: C04B28/00 ,  C04B24/22

Abstract: PURPOSE:To obtain an admixture of cement which is excellent in action for enhancing fluidity of cement composition and water reducing properties, etc., by constituting the admixture of cement while keeping the formaldehyde additive cocondensate of specified two kinds of aromatic sulfonic acid alkali metallic salt as an essential component. CONSTITUTION:The formaldehyde additive cocondensate having two components consisting of a component A and a component B is produced by reacting the compd. A (e.g. phenol sodium sulfonate) shown in a formula I (R is H and 1-6C lower alkyl, X is alkali metal) and the compd. (B) e.g. sodium sulfanilate) shown in a formula II (Y is alkali metal) and formalin (C) in alkalinity. Then, an admixture of cement is produced by utilizing this cocondensate as an essential component and blending a thickener and a water-holding agent, etc., in accordance with necessity. When this admixture is added to cement composition, the fluidity thereof is enhanced. Therefore, the degree of water reduction is increased and also transport due to force-feed of a pump is enabled.