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公开(公告)号：JPH06127992A
公开(公告)日：1994-05-10
申请号：JP27857992
申请日：1992-10-16
Applicant: KAO CORP
Inventor： YAMATO FUJIO , TORIMAE YASUHIRO
Abstract: PURPOSE:To improve appearance and dimensional accuracy by compounding cellulose powder of specific average grain sizes and high-performance water- reducing agents into a cementitious material. CONSTITUTION:The cellulose powder having 2 to 100mum average grain sizes is compounded at 10 to 10wt.% of the entire part of the compd. into the cementitious material, such as Portland cement, and >=1 kinds of the high- performance water-reducing agents among condensation product of naphthalene sulfonate and formaldehyde, polycarboxylate, refined lignin sulfonate and polystyrene sulfonate, is compounded at 0.6 to 3.0wt.% into the cement. Others, such as various kinds of intimate mixtures including lightweight aggregate, reinforcing fibers, surfactants, retardants, blast furnace slag, stone powder, etc., are compounded and kneaded into the above-mentioned compsn. at prescribed ratios, by which the cement compsn. for extrusion molded articles is obtd. This compsn. is then extruded by an extrusion molding machine mounted with a die at the front end, by which the molded structural body having the quality of excellent appearance and dimensional accuracy is obtd.
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公开(公告)号：JPH06100346A
公开(公告)日：1994-04-12
申请号：JP24923892
申请日：1992-09-18
Applicant: KAO CORP
Inventor： YAMATO FUJIO , TAMAOKI RYOICHI
Abstract: PURPOSE:To reduce air bubbles by mixing a copolymer synthesized through polymerization of plural monomers each represented by a specified formula and/or its metal salt and a compound of a specified formula as the essential components. CONSTITUTION:A copolymer having 1000 to 1000000 weight-average molecular weight and/or its metal salt is obtained by polymerizing 10 to 99wt.% unsaturated bond-containing polyalkylene glycol monoester-based monomer represented by formula I [R3 to R4 are each H, methyl, (CH2)m2CO2M, formula II, etc.] and 90 to 1wt.% acrylic acid-and/or unsaturated dicarboxylic acid-based monomer represented by formula III or IV (AO is a 2 to 3C oxyalkylene; R5 and R8 are each H or methyl; R6 to R7 and R9 to R10 are each H, methyl, (CH2)m7 CO2M5; (m1 to m7) is each 0 to 2; (n1 to n5) is each 3 to 500; M3 and M5 are each H, a univalent metal, etc.; M4 and M6 are a divalent metal; X1 to X5 is H or a 1 to 3C alkyl]. As admixtures for concrete, the resultant copolymer and a compound represented by formula V (R1 to R2 are each H or a 8 to 18C alkyl; M1 to M2 are each an alkaline metal) are blended with cement respectively in an amount of 0,10 to 1.0wt.% and 0.0025 to 0.1wt.%.
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公开(公告)号：JPH0692704A
公开(公告)日：1994-04-05
申请号：JP23952692
申请日：1992-09-08
Applicant: KAO CORP
Inventor： KOJIMA TOSHIHARU , SATO HARUYUKI , KITAGAWA KAZUE , KANZAKI SHOJI , YAMATO FUJIO
Abstract: PURPOSE:To improve the flowability of a super high strength concrete and the reduction of viscosity and to hold slump for a certain time by using a polymer and its metallic salt obtained from a monomer such as a specific glycol monoester, acrylic acid, polyethylene glycol, oxycarboxylic acid, etc., as essential components. CONSTITUTION:This admixture contains three components of (1) the copolymer and its metallic salt obtained by polymerizing the polyalkylene glycol monoester monomer, the acrylic acid monomer and/or an unsaturated carboxylic acid monomer, (2) polyethylene glycol having 5000-100000av. molecular weight and (3) one or more kinds among compounds of oxycarboxylic acid and its salts, sugar and sugar-alcohol as the essential components. The admixture is improved in flowability, viscosity and slump holding property, etc., of concrete, particularly in the super high strength concrete having
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公开(公告)号：JPH0664956A
公开(公告)日：1994-03-08
申请号：JP21889192
申请日：1992-08-18
Applicant: KAO CORP
Inventor： KANZAKI SHOJI , KOJIMA TOSHIHARU , YAMATO FUJIO , KITAGAWA KAZUE , SATO HARUYUKI
IPC: C04B24/26 , C04B24/32 , C04B40/00 , C08F20/02 , C08F20/26 , C08F220/28 , C08F222/06 , C08F290/00 , C08F299/02
Abstract: PURPOSE:To provide a cement admixture for bettering dispersibility, suppressing loss of slump and improving strength and durability in a cement paste, etc., as a cement composition. CONSTITUTION:A cement admixture comprises (A) a copolymer obtained by polymerizing a polyalkylane glycol monoester-based monomer having an unsaturated bond with an acrylic acid-based monomer and/or unsaturated dicarboxylic acid-based monomer and/or a metal salt of the copolymer and (B) polyethylene glycol. Consequently, effects of pressure feed operation by a pump is extremely raised by using the cement admixture as a pump-pressure feed auxiliary for concrete, the cement admixture is effective for maintaining fluidity and preventing separation of material and is expected to improve strength and durability.
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公开(公告)号：JPH05301754A
公开(公告)日：1993-11-16
申请号：JP10937792
申请日：1992-04-28
Applicant: KAO CORP
Inventor： YAMATO FUJIO , TAMAOKI RYOICHI
IPC: C04B28/02
Abstract: PURPOSE:To obtain a concrete composition for self packing requiring no compaction by blending concrete with specific amounts of zeolite and a high- performance water-reducing agent and adjusting slump to >=a given slump flow value. CONSTITUTION:Concrete is blended with 2-10vol.% natural or synthetic zeolite having 0.5-10mum particle diameter and 0.6-3.0wt.% calculated as active ingredient of a high-performance water-reducing agent (e.g. condensate of naphthalenesulfonic acid or its salt and formaldehyde and/or condensate of melaminesulfonic acid or its salt or oxymethylated compound selected from a group consisting of melamine, phenol, urea and aniline and/or a condensate or cocondensate of a sulfonated substance and formaldehyde). A slump flow value is adjusted to >=50cm slump flow value to give a concrete composition for self packing requiring no compaction.
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Patent Agency Ranking
公开(公告)号：JPH05293812A
公开(公告)日：1993-11-09
申请号：JP9947092
申请日：1992-04-20
Applicant: KAO CORP
Inventor： YAMATO FUJIO
Abstract: PURPOSE:To obtain water dilution type releasant, by which bubbles developing on the surface of concrete are reduced and, at the same time, which is excellent in releasability, by a method wherein liquid water repellent substance is mixed with specified unsaturated aliphatic acid or its organic salt and nonionic surface active agent. CONSTITUTION:Unsaturated aliphatic acid used is one having 1 or 2 OH groups and the number of carbon atoms in a carbon chain of 10-22. Any position of the OH group in the carbon chain may be allowed except the terminal position of the carbon chain. As the organic salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt or morpholine salt is preferably used. The preferable mixing ratio of the unsaturated aliphatic acid or its organic salt is 3-10wt.% of liquid water repellent substance. The nonionic surface active agent makes said unsaturated aliphatic acid or its organic salt dissolvable so as to emulsify when the acid or salt is diluted with water at usage. The preferable value range of HLB is 8-12. The releasant concerned is used by diluting with water 3 to 20-fold.
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公开(公告)号：JPH05286781A
公开(公告)日：1993-11-02
申请号：JP8554292
申请日：1992-04-07
Applicant: KAO CORP
Inventor： YAMATO FUJIO , IIZUKA MASANORI
Abstract: PURPOSE:To accompany fine foam by kneading the whole material free from foam by a first kneader, transferring the kneaded gypsum paste to a second kneader and kneading the same together with foam. CONSTITUTION:50-70 pts.wt. water and as occasion demands, proper quantity of mixing agent, a water-reducing agent, a hardening detardant, a promoter and water-soluble starch are added to 100 pts.wt. beta-hemihydrate gypsum. The mixture is agitated and mixed in a first kneader 1 and made pasty. Then, the gypsum paste is transferred to a second kneader 2 and foam described below is added while agitating the gypsum paste so that specific gravity of gypsum slurry is regulated to about 0.9-1.2. The foam is produced in a foaming machine by using a foaming agent. Gypsum composition high in foam stability shown in an expression is obtained.
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公开(公告)号：JPH05246744A
公开(公告)日：1993-09-24
申请号：JP4562092
申请日：1992-03-03
Applicant: KAO CORP
Inventor： FUKUDA MASAHIRO , YAMATO FUJIO , TAMAOKI RYOICHI , IIZUKA MASANORI
IPC: C04B24/30 , C04B24/32 , C04B28/02 , C08K5/13 , C08K5/3492 , C08K5/42 , C08L61/20 , C08L61/28 , C08L71/02
Abstract: PURPOSE:To improve separation resistance by mixing a specified polyethylene glycol and condensation polymer or co-condensation polymer of formaldehyde with one or more kinds of compounds expressed by specified formulae I-VI. CONSTITUTION:A condensation polymer (B) or co-condensation polymer is produced from formaldehyde and one or more kinds of compd. expressed by formulae I-VI. Then polyethylene glycol (A) having 6000-50000 weight average mol.wt. and (B) is mixed by (0.5 to 10)/(99.5 to 90) weight ratio to obtain an admixture for concrete. In the formulae I-VI, X1 is H, alkyl group (R) of 1-3 carbon number, carboxyl group (CA), sulfone (SU) or alkali metal (DA) salt of these, hydroxyl group, or methoxy group, X2 is H, R of 1-3 carbon number, CA, SU or DA salt of these, hydroxyl group, or methoxy, X3-X8 are H, -CH2SO3 M3, -CH2OH, or hydroxyl group, and X9-X11 are H, R of 1-3 carbon number, CA, SU or DA salt of these hydroxyl group, methoxy group, -CH2OH, -CH2SO3 M4, wherein M1-M7 are H or DA.
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公开(公告)号：JPH0585789A
公开(公告)日：1993-04-06
申请号：JP24568591
申请日：1991-09-25
Applicant: KAO CORP
Inventor： YAMATO FUJIO , IIZUKA MASANORI
Abstract: PURPOSE:To provide an additive suitable for extruding and forming a water kneading compound essentially consisting of a cement-based material. CONSTITUTION:The additive for cement-based extruded formed body consists essentially of a reaction product reacted an alkylene oxide addition product being added >=20mols of alkylene oxides to a primary alcohol having >=12 carbon atoms in the molecule, a primary mercaptan or an alkylphenol with a compound having >=1 epoxy group. By using this additive, a cement-based extruded formed structure excellent in the quality such as appearance, dimension precision and the extruding speed is obtained and also the productivity is improved.
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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
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.
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