公开(公告)号：JPH0812397A

公开(公告)日：1996-01-16

申请号：JP14932894

申请日：1994-06-30

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  KITAGAWA KAZUE ,  SATO HARUYUKI

IPC: C04B24/16 ,  C04B24/26 ,  C04B24/32 ,  C04B24/38 ,  C04B103/32

Abstract: PURPOSE:To improve high fluidity and separation resistance by allowing an admixture to consist essentially of a copolymer obtained by polymerizing a specific monomer and one or more kinds of monomers selected between two kinds of compounds and a water soluble high molecular polymer. CONSTITUTION:The copolymer A having the weight average molecular weight of 3000-1000000 is obtained by polymerizing the monomer expressed by formula I (each of R1 and R2 is H or methyl, m1 is 0-2, AO is a 2-3C oxyalkylene, (n) is 110-300 and X is H or a 1-3C alkyl) and one or more kinds of monomers (b) selected from the compound expressed by 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 in the mol ratio of (a)/(b)-0.1/100-100/100. The copolymer A and the water soluble high polymer B such as a nonionic cellulose ether, an acrylic copolymer or the like are blended in the ratio of A/B=95/5-5/95.

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：JPH07247149A

公开(公告)日：1995-09-26

申请号：JP3849794

申请日：1994-03-09

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  SATO HARUYUKI ,  KITAGAWA KAZUE

IPC: C04B24/26 ,  C08F20/26 ,  C08F20/28

Abstract: PURPOSE:To improve fluidity-retaining property of a hydraulic composition by including a specific copolymer as an essential component of a concrete admixture. CONSTITUTION:Monomers of formula III [R1 is R2; (n1) is (n3); (n2) is 1-300; X1 is X2] constisting of 50-1mol% of formula I [R2 to R3 each is H or methyl; (n3) and (n5) each is 0-2; (n4) is 9-300; A0 is a 2-3C oxyalkylene; X2 to X3 each is H, a 1-3C alkyl or (substituted) amino] and 50-99mol% of a monomer of formula II are copolymerized in the presence of an aqueous polymerization initiator to provide the objective agent for preventing lowering of fluidity of concrete having 1000-500000 weight-average molecular weight (measured by gel permeation chromatography/sodium polystyrenesulfonate which is a standard substance/water system). 0.02-1.0wt.% of this fluidity-lowering preventing agent and 0.25-1.0wt.% of well-known concrete admixture such as formaldehyde condensate of a naphthalenesulfonic acid salt, formaldehyde condensate of melaminesulfonic acid salt or lignin sulfonic acid salt are added to cement.

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：JPH0725650A

公开(公告)日：1995-01-27

申请号：JP13027793

申请日：1993-06-01

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  MORIYAMA NOBORU

IPC: C04B24/26

Abstract: PURPOSE:To improve fluidity, flow retaining properties and foam retention of a hydraulic composition such as concrete, etc., using a concrete admixture comprising a copolymer containing a few compounds of specified formulas in a specific ratio as essential components. CONSTITUTION:Three kinds of compounds shown by general formulas A, B and C are polymerized in the ratio of the compounds of the general formula A/B/C of 10-90/1-30/10-90 to provide a concrete admixture. R1 to R5 in the formulas are hydrogen, etc.; R6 and R7 are (CH2)m3, COOM2, hydrogen, etc.; m1 to m3 are 0-2; n1 is 1-100; n2 is 1-30; X1 and X2 are hydrogen or 1-3C alkyl group; AO is 2-4C oxyalkylene group; SO is oxystyrene group; M1 and M2 are hydrogen, monovalent metal, ammonium group, etc. The copolymer has 1,000-500,000 average molecular weight.

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：JPH06285831A

公开(公告)日：1994-10-11

申请号：JP7954193

申请日：1993-04-06

Applicant: KAO CORP

Inventor： TAMAOKI RYOICHI ,  YAMATO FUJIO

IPC: B28B7/38

Abstract: PURPOSE:To obtain a mold frame separating agent for concrete with an excellent separating property by blending alkyl amine and/or alkyl polyamine having a group of NH2, NH or N into a liquid water-repellent substance. CONSTITUTION:The blending amount of alkyl amine and/or alkyl polymamine is preferable, in particular, to be on the order of 3-10 wt.%. Furthermore, alkylamine and/or alkylpolyamine and nonionic surface active agent can be blended together with each other. By blending oil soluble nonionic surface active agent, the expansion of concrete in the separating agent surface applied on the mold frame is enhanced, so that the filling property is improved and thereby the finish of the concrete surface is improved. Accordingly, saving of man-hour required for surface repairing or mold frame cleaning becomes possible, and the improvement of quality is expected as well.

公开(公告)号：JPH06127998A

公开(公告)日：1994-05-10

申请号：JP27858092

申请日：1992-10-16

Applicant: KAO CORP

Inventor： YAMATO FUJIO ,  TORIMAE YASUHIRO

IPC: C04B24/00 ,  C04B24/38 ,  C04B28/02

Abstract: PURPOSE:To improve the flow property and separation resistance by compounding cellulose powder and a high performance water reducing agent to a cement base material and making to a specific slump flow value. CONSTITUTION:The cellulose powder 2-10mum average particle diameter of 2-10 volume % for one m concrete is compounded to a cement base material such as Portland cement and also one kind or more high performance water reducing agents among a naphthalene sulfonic acid formaldehyde condensation product, polycarbonic acid ester, a salt of refined lignin sulfonic acid, a salt of polystyrene sulfonic acid, a phenol and/or aniline sulfonic acid formaldehyde condensation product, etc., of 0.6-30wt.% for cement compound. Besices, lightweight aggregate, blast furnace slag, silica fume and other admixture are compounded in a prescribed ratio and kneaded, thus the self-filling concrete composition superior in a high flow property with >=45cm slump flow value is JISA1101 and separation resistance is obtained.

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.