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公开(公告)号：JPS63146964A
公开(公告)日：1988-06-18
申请号：JP19938587
申请日：1987-08-10
Applicant: KAO CORP
Inventor： HOSOKAWA YASUTOKU , KOBAYASHI TAKATOSHI
IPC: C08K5/11 , A61F13/15 , A61L15/20 , A61L15/60 , C08K5/10 , C08K5/16 , C08K5/22 , C08K5/24 , C08L33/02 , C08L101/00 , C08L101/14
Abstract: PURPOSE:To produce a resin composition by adding a specific amount of a metal chelating agent to a water-absorbing resin, thus the composition has high water absorption performance, high gel strength in swelling and excellent stability of the swollen gel with the passage of time, and is suitably used as a water absorbent in disposable diapers. CONSTITUTION:A dried water-absorbing resin such as crosslinked polyacrylic acid is combined with 0.01-10wt% of a metal-chelating agent such as phenanthroline or its derivative or bipyridine or its derivative.
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公开(公告)号：JPS62205101A
公开(公告)日：1987-09-09
申请号：JP4790186
申请日：1986-03-05
Applicant: KAO CORP
Inventor： KOBAYASHI TAKATOSHI , HOSOKAWA YASUTOKU
IPC: B01J20/26 , A61F13/49 , A61F13/53 , C08F8/00 , C08F220/04 , C08F290/00 , C08F299/00
Abstract: PURPOSE:To obtain a polymer having improved absorption amount, absorbing rate, gel strength in swelling, etc., by polymerizing a hydrophilic monomer in the presence of specific amounts of a polymerization initiator and a crosslinking agent, adjusting the water content of the prepared polymer to a specific range and crosslinking again. CONSTITUTION:A carboxyl or carboxylate group-containing water-soluble polymerizable monomer (e.g. acrylic acid, etc.) is polymerized and crosslinked in the presence of both (A) 0.01-0.15mol% based on the monomer of a water-soluble radical polymerization initiator (e.g. sodium persulfate, etc.) and (B) 2X10 -8X10 mol% based on the monomer of a polyglycerol chain-containing crosslinking agent (e.g. polyglycerol polyacrylate, etc.) or a polyoxyalkylene chain-containing crosslinking agent having 3-200 oxyalkylene units on the average, the prepared polymer is adjusted to 10-40wt%, especially 15-35wt% water content and the polymer is further crosslinked by the use of (C) a water- soluble crosslinking agent (e.g., polyglycidyl ether, etc.) containing two or more reactive crosslinking groups.
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公开(公告)号：JPS61231003A
公开(公告)日：1986-10-15
申请号：JP7241785
申请日：1985-04-05
Applicant: KAO CORP
Inventor： OTANI SHOJI , HOSOKAWA YASUTOKU , YASUDA YUTAKA
Abstract: PURPOSE:The titled dispersant which can stabilize a polymerization system in reverse phase suspension polymerization and consistently give small polymer granules free of fine polymer particles, obtained by copolymerizing an ethylenically unsaturated monomer with a specified monomer. CONSTITUTION:At least one ethylenically unsaturated monomer (A) having a 6C or higher alkyl group and/or an aromatic ring [e.g., 6-36C alkyl (meth) acrylate] is copolymerized with 3-40wt% at least one monomer (B) having at least one amide group in the molecule (e.g., N-vinyl-2-pyrrolidone) to obtain the titled oil-soluble copolymer of a MW of 3,000-500,000. A 15-80wt% aqueous solution containing a water-soluble ethylenically unsaturated monomer and optionally other water-soluble monomers is (co)polymerized in the presence of 0.1-10wt% above-produced dispersant and a polymerization initiator in at least one solvent selected from among aliphatic hydrocarbons, alicyclic hydrocarbons and aromatic hydrocarbons all of which have a b.p. of 30-200 deg.C.
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公开(公告)号：JPH09176427A
公开(公告)日：1997-07-08
申请号：JP33965895
申请日：1995-12-26
Applicant: KAO CORP
Inventor： WATANABE YOSHIHIKO , TSUJI MAKOTO , HOSOKAWA YASUTOKU , INA YOSHIMITSU
IPC: C08K5/53 , C07F9/38 , C08K5/5317 , C08L33/02 , C08L51/02 , C08L101/14
Abstract: PROBLEM TO BE SOLVED: To produce a highly water-absorbing resin composition which gives a sanitary water absorbent freed from radical-generating species, iron ions, etc., contained in the absorbed body fluid by adding a specified diphosphonic acid to a highly water-absorbing resin such as a crosslinked polyacrylate. SOLUTION: A diphosphonic acid represented by the formula (wherein R is a 5-23C hydrocarbon group) or its salt (B) is added to a highly water- absorbing resin (A). In the formula, R is a linear or branched alkyl, a cycloalkyl, an alkenyl, an aryl or the like. It is particularly desirably a 11-17C alkyl. It is most desirable from the viewpoint of water-absorbing performances that component A is a crosslinked polyacrylate. One hundred (100) pts.wt. component A is mixed with 0.0001-20, particularly desirably 0.01-5 pts.wt. component B. Component B is added to component A, for example, in such a way that it is added in the form of a powder or that its aqueous dispersion or its solution in a hydrophilic organic solvent is infiltrated into component B and dried. The highly water-absorbing resin containing component B is resistant against decomposition and deterioration even in the presence of L-ascorbic acid, hydrogen peroxide, iron ions, copper ions and water contained in the body fluid.
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公开(公告)号：JPH08283318A
公开(公告)日：1996-10-29
申请号：JP9353395
申请日：1995-04-19
Applicant: KAO CORP
Inventor： SAKAKIBARA MAKOTO , MIYANAGA SEIICHI , HANADA YOKO , HOSOKAWA YASUTOKU
Abstract: PURPOSE: To obtain a highly water-absorbing polymer which can be produced by a stable polymn. without causing flocculation and is very resistant to degradation in properties. CONSTITUTION: In a process for producing a highly water-absorbing polymer by polymerizing a water-sol. vinyl monomer, the polymn. is conducted in the presence of at least one chelate compd. of which the solubility of a Cu salt in a physiological salt soln. at 2 deg.C is 0.01wt.% or lower.
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Patent Agency Ranking
公开(公告)号：JPH07238155A
公开(公告)日：1995-09-12
申请号：JP3219994
申请日：1994-03-02
Applicant: KAO CORP
Inventor： HOSOKAWA YASUTOKU , SUZUKI FUMITO
IPC: B29D22/00 , B29K67/00 , C08G63/66 , C08G63/672
Abstract: PURPOSE:To obtain a polyester copolymer resin used as a molding material and having transparency, heat resistance and impact resistance. CONSTITUTION:This polyester copolymer resin is one wherein the constituent dicarboxylic acid component comprises 5-70mol% 4-4'-biphenyldicarboxylic acid represented by formula I and the constituent glycol component comprises 5-90mol% compound represented by formula II (wherein p is 1-4; and m and n each is 1-5).
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公开(公告)号：JPH07188530A
公开(公告)日：1995-07-25
申请号：JP33126193
申请日：1993-12-27
Applicant: KAO CORP
Inventor： HOSOKAWA YASUTOKU , SUZUKI FUMITO , SATO TAKAHIRO
Abstract: PURPOSE:To provide a polyester resin composition excellent in impact resistance, rigidity, dimensional stability, moldability, luster, and environmental characteristics by dispersing a specific resin into a polyester resin comprising terephthalic acid and a specific diol. CONSTITUTION:This composition comprises (A) 100 pts.wt. of a polyester resin in which the main component of the dicarboxylic acid component is terephthalic acid and 3-80mol.% of the dial component is a glycol selected from glycols of formulas I and II (X is -C2H4-, -O-, etc.; m,n are 1-5) and p-xylylene glycol of formula III, and (B) 1-30 pts.wt. of a resin (preferably an acrylic rubber) having a glass transition temperature (Tg) of
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公开(公告)号：JPH07188525A
公开(公告)日：1995-07-25
申请号：JP33126693
申请日：1993-12-27
Applicant: KAO CORP
Inventor： HOSOKAWA YASUTOKU , NAKANO YUKIHIRO , ODAKURA SHINJI , SANO YASUNORI
Abstract: PURPOSE:To obtain a plastic container excellent in environmental characteristics, impact resistance, rigidity, dimensional stability, molding processability and gloss, by using a polyester resin composition of specific composition. CONSTITUTION:This plastic container consists of a polyester resin composition which can be obtained by incorporating a total of 100 pts.wt. of a blend resin composed of (A) a modified polyethylene terephthalate resin >=50 deg.C in glass transition temperature and >=0.5dl/g in the intrinsic viscosity [eta] determined at 25 deg.C in a phenol/tetrachloroethane mixed solvent (at the weight ratio of (6:4)) modified to an extent of 3-100mol% based on a total of 200mol% of 100mol% of dicarboxylic acid component and 100mol% of diol component respectively making up polyethylene terephthalate and (B) an aromatic polycarbonate resin (pref. bisphenol A-type resin) at the weight ratio A/B of (99:1) to (50:50) with (C) 1-30 pts.wt. of a resin
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公开(公告)号：JPH07188524A
公开(公告)日：1995-07-25
申请号：JP33126593
申请日：1993-12-27
Applicant: KAO CORP
Inventor： HOSOKAWA YASUTOKU , NAKANO YUKIHIRO , ODAKURA SHINJI , SANO YASUNORI
Abstract: PURPOSE:To obtain a plastic container excellent in environmental characteristics, impact resistance, rigidity, dimensional stability, molding processability and gloss, by incorporating a blended resin containing a specific modified polyethylene terephthalate resin with a resin with a specific glass transition temperature. CONSTITUTION:This plastic container can be obtained by incorporating a total of 100 pts.wt. of a blend resin composed of (A) a modified polyethylene terephthalate resin >=50 deg.C in glass transition temperature and >=0.5dl/g in the intrinsic viscosity determined at 25 deg.C in a phenol/tetrachloroethane mixed solvent (at the weight ratio of (6:4)) modified to an extent of 3-100mol% based on a total of 200mol% of 100 mol% of dicarboxylic acid component and 100mol% of diol component respectively making up polyethylene terephthalate and (B) a polyarylate resin at the weight ratio A/B of (99:1) to (50:50) with (C) 1-30 pts.wt. of a resin
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公开(公告)号：JPH07188523A
公开(公告)日：1995-07-25
申请号：JP33126393
申请日：1993-12-27
Applicant: KAO CORP
Inventor： HOSOKAWA YASUTOKU , SUZUKI FUMITO , SATO TAKAHIRO
Abstract: PURPOSE:To obtain a polyester resin composition excellent in impact resistance, rigidity, dimensional stability, molding processability, gloss and environmental characteristics, useful for sheets, etc., by incorporating a resin with a specific glass transition temperature in a blend resin containing a specific polyester resin. CONSTITUTION:This composition can be obtained by incoporating (A) 100 pts.wt. of a blend resin of (1) a polyester resin made up of a dicarboxylic acid component predominant in terephthalic acid and a diol component 3-80mol% of which is diol of formula I [X is C2H4, of formula II (Y and Z are each H or a 1-3C alkyl), O or SO2; a is 0 or 1; m and n are each 1-5], a doil of formula III, or p-xylene glycol of formula IV and (2) an aromatic polycarbonate resin at the weight ratio of (99:1) to (50:50) with (B) 1-30 pts.wt. of a resin
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