JP2005537131A - 吸水剤およびその製造方法 - Google Patents
吸水剤およびその製造方法 Download PDFInfo
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- JP2005537131A JP2005537131A JP2004535157A JP2004535157A JP2005537131A JP 2005537131 A JP2005537131 A JP 2005537131A JP 2004535157 A JP2004535157 A JP 2004535157A JP 2004535157 A JP2004535157 A JP 2004535157A JP 2005537131 A JP2005537131 A JP 2005537131A
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- Prior art keywords
- water
- absorbing agent
- polymer
- nitrogen
- containing polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229920000642 polymer Polymers 0.000 claims abstract description 128
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000002245 particle Substances 0.000 claims abstract description 31
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 16
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- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 4
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- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 229920001592 potato starch Polymers 0.000 description 1
- 229940116317 potato starch Drugs 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- UIIIBRHUICCMAI-UHFFFAOYSA-N prop-2-ene-1-sulfonic acid Chemical compound OS(=O)(=O)CC=C UIIIBRHUICCMAI-UHFFFAOYSA-N 0.000 description 1
- QTECDUFMBMSHKR-UHFFFAOYSA-N prop-2-enyl prop-2-enoate Chemical compound C=CCOC(=O)C=C QTECDUFMBMSHKR-UHFFFAOYSA-N 0.000 description 1
- RZKYDQNMAUSEDZ-UHFFFAOYSA-N prop-2-enylphosphonic acid Chemical compound OP(O)(=O)CC=C RZKYDQNMAUSEDZ-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- AAYRWMCIKCRHIN-UHFFFAOYSA-N propane-1-sulfonic acid;prop-2-enamide Chemical compound NC(=O)C=C.CCCS(O)(=O)=O AAYRWMCIKCRHIN-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229940100486 rice starch Drugs 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- HYXGAEYDKFCVMU-UHFFFAOYSA-N scandium oxide Chemical compound O=[Sc]O[Sc]=O HYXGAEYDKFCVMU-UHFFFAOYSA-N 0.000 description 1
- 229910000346 scandium sulfate Inorganic materials 0.000 description 1
- LQPWUWOODZHKKW-UHFFFAOYSA-K scandium(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[Sc+3] LQPWUWOODZHKKW-UHFFFAOYSA-K 0.000 description 1
- QHYMYKHVGWATOS-UHFFFAOYSA-H scandium(3+);trisulfate Chemical compound [Sc+3].[Sc+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O QHYMYKHVGWATOS-UHFFFAOYSA-H 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 229940047670 sodium acrylate Drugs 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- VBOFDBONKAERAE-UHFFFAOYSA-M sodium;sulfenatooxymethanol Chemical compound [Na+].OCOS[O-] VBOFDBONKAERAE-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- OPQYOFWUFGEMRZ-UHFFFAOYSA-N tert-butyl 2,2-dimethylpropaneperoxoate Chemical compound CC(C)(C)OOC(=O)C(C)(C)C OPQYOFWUFGEMRZ-UHFFFAOYSA-N 0.000 description 1
- PFBLRDXPNUJYJM-UHFFFAOYSA-N tert-butyl 2-methylpropaneperoxoate Chemical compound CC(C)C(=O)OOC(C)(C)C PFBLRDXPNUJYJM-UHFFFAOYSA-N 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- CSKKAINPUYTTRW-UHFFFAOYSA-N tetradecoxycarbonyloxy tetradecyl carbonate Chemical compound CCCCCCCCCCCCCCOC(=O)OOC(=O)OCCCCCCCCCCCCCC CSKKAINPUYTTRW-UHFFFAOYSA-N 0.000 description 1
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical class [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 1
- 150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- GTZCVFVGUGFEME-UHFFFAOYSA-N trans-aconitic acid Natural products OC(=O)CC(C(O)=O)=CC(O)=O GTZCVFVGUGFEME-UHFFFAOYSA-N 0.000 description 1
- VPYJNCGUESNPMV-UHFFFAOYSA-N triallylamine Chemical compound C=CCN(CC=C)CC=C VPYJNCGUESNPMV-UHFFFAOYSA-N 0.000 description 1
- 150000005691 triesters Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- JLGLQAWTXXGVEM-UHFFFAOYSA-N triethylene glycol monomethyl ether Chemical compound COCCOCCOCCO JLGLQAWTXXGVEM-UHFFFAOYSA-N 0.000 description 1
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 1
- JSPLKZUTYZBBKA-UHFFFAOYSA-N trioxidane Chemical compound OOO JSPLKZUTYZBBKA-UHFFFAOYSA-N 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- ZTWTYVWXUKTLCP-UHFFFAOYSA-N vinylphosphonic acid Chemical compound OP(O)(=O)C=C ZTWTYVWXUKTLCP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229940100445 wheat starch Drugs 0.000 description 1
- 229910000347 yttrium sulfate Inorganic materials 0.000 description 1
- RTAYJOCWVUTQHB-UHFFFAOYSA-H yttrium(3+);trisulfate Chemical compound [Y+3].[Y+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RTAYJOCWVUTQHB-UHFFFAOYSA-H 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- UHVMMEOXYDMDKI-JKYCWFKZSA-L zinc;1-(5-cyanopyridin-2-yl)-3-[(1s,2s)-2-(6-fluoro-2-hydroxy-3-propanoylphenyl)cyclopropyl]urea;diacetate Chemical compound [Zn+2].CC([O-])=O.CC([O-])=O.CCC(=O)C1=CC=C(F)C([C@H]2[C@H](C2)NC(=O)NC=2N=CC(=CC=2)C#N)=C1O UHVMMEOXYDMDKI-JKYCWFKZSA-L 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/245—Differential crosslinking of one polymer with one crosslinking type, e.g. surface crosslinking
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08L39/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions of derivatives of such polymers
- C08L39/02—Homopolymers or copolymers of vinylamine
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- C08J2300/14—Water soluble or water swellable polymers, e.g. aqueous gels
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/24—Homopolymers or copolymers of amides or imides
- C08L33/26—Homopolymers or copolymers of acrylamide or methacrylamide
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Abstract
Description
(a)吸水剤ポリマーの粒子、および
(b)窒素含有ポリマーの全質量に対して5〜17モル/kg、有利に5.5〜15モル/kg、特に6.0〜12モル/kgおよび特に有利に6.5〜10モル/kgのプロトン化可能な窒素原子を含有する窒素含有ポリマー
からなる吸水剤により解決される。
粒子の98質量%より多くが100〜850μm、有利に100〜600μm、特に100〜500μmの粒度である粒度分布、
少なくとも30×10−7cm3・s/g、有利に少なくとも60×10−7cm3・s/g、特に100×10−7cm3・s/gの塩水流れ伝導率、
少なくとも50gf、有利に少なくとも90gf、特に少なくとも110gfのボール破裂強さ(30分)[BBS(30分)]、
少なくとも50gf、有利に少なくとも75gf、特に少なくとも100gfのボール破裂強さ(16時間)[BBS(16時間)]、
0.8未満、有利に0.5未満、特に0.4未満の[BBS(30分)−BBS(16時間)]/[BBS(30分)]の商
CRC20〜33g/g、
AUL(0.7psi)17〜27g/g。
R1、R2は独立に水素、C1〜C4−アルキル、C2〜C6−アルケニル、アリール、特にフェニルまたは(メタ)アクリロイルであり、
Xは水素またはメチルであり、かつ
nは1〜1000、特に10〜400の整数である)を有する。
モノエチレン系不飽和酸およびその塩からなる群から選択される少なくとも1種のモノマーA49.9〜99.9質量%、
前記モノマーAと異なる少なくとも1種の非架橋モノエチレン系不飽和モノマーB0〜50質量%、有利に0〜20質量%、および
少なくとも1種の架橋性モノマーC0.001〜20質量%、有利に0.01〜14質量%
から重合される。
アルコキシシリル化合物、
ポリアジリジン、ポリエーテルまたは置換された炭化水素をベースとするアジリジン化合物、例えばビス−N−アジリジノメタン、
ポリアミンまたはポリアミドアミンおよびエピクロロヒドリンとのその反応生成物、
ポリオール、例えばエチレングリコール、1,2−プロパンジオール、1,4−ブタンジオール、グリセロール、メチルトリグリコール、平均分子量Mw200〜10000を有するポリエチレングリコール、ジグリセロールおよびポリグリセロール、ペンタエリスリトール、ソルビトール、これらのポリオールのエトキシレートおよびそのカルボン酸または炭酸とのエステル、例えばエチレンカーボネートまたはプロピレンカーボネート、
炭酸誘導体、例えば尿素、チオウレア、グアニジン、ジシアノジアミド、2−オキサゾリジノンおよびその誘導体、ビスオキサゾリン、ポリオキサゾリン、ジイソシアネートおよびポリイソシアネート、
ジ−N−メチロールおよびポリ−N−メチロール化合物、例えばメチレンビス(N−メチロールメタクリルアミド)またはメラミンホルムアルデヒド樹脂、
2個以上のブロックドイソシアネート基を有する化合物、例えば2,2,3,6−テトラメチルピペリジン−4−オンでブロックされたトリメチルヘキサメチレンジイソシアネート、
多価金属の塩、例えば硫酸アルミニウム。
1.遠心保留能力(CRC)
この方法はティーバッグでのヒドロゲル形成ポリマーの自由膨張率を測定する。乾燥したポリマー0.2000±0.0050gを60×85mmの粒度のティーバッグに密閉する。引続きティーバッグを0.9質量%塩水溶液に30分間浸す(少なくとも塩水0.83l/ポリマー粉末1g)。引続きティーバッグを250Gで3分間遠心する。吸収された液体の量を遠心したティーバッグを計量することにより決定する。
AUL0.7psiを決定するための測定セルは内径60mmおよび高さ50mmのプレキシガラスシリンダーである。メッシュサイズ36μmを有するステンレス鋼メッシュフロアをシリンダーの下側に接着により結合する。測定セルは更に直径59mm有するプラスチック板およびプラスチック板と一緒に測定セルに配置できるおもりを有する。プラスチック板とおもりの質量は全部で1345gである。空のプレキシガラスシリンダーおよびプラスチック板の質量を測定し、W0として記録することによりAUL0.7psiを決定する。引続き0.900±0.005gの吸水剤ポリマーをプレキシガラスシリンダーに重みをかけてステンレス鋼メッシュフロア上にきわめて均一に分配する。引続きプラスチック板をプレキシガラスシリンダーに入念に配置し、全部の単位を計量し、質量をWaとして記録する。引続きプレキシガラスシリンダー中のプラスチック板におもりを配置する。引続き直径120mmおよび気孔率0のセラミックフィルター板を直径200mmおよび高さ30mmのぺトリ皿の中央に配置し、0.9質量%塩化ナトリウム溶液を液体の表面にフィルター板の表面が湿らずにフィルター板表面と同じ高さになるように十分に導入する。直径90mmおよび細孔径20mm未満の円形濾紙(SandS589Schwarzband Schleicher and Schuell)を引続きセラミック板に配置する。吸水剤ポリマーを有するプレキシガラスシリンダーを引続きプラスチック板およびおもりとともに濾紙の頭部に配置し、ここで60分放置する。この時間の終了時に全部のユニットを濾紙およびぺトリ皿から除去し、引続きおもりをプレキシガラスシリンダーから除去する。膨張したヒドロゲルを有するプレキシガラスシリンダーをプラスチック板とともに計量し、質量をWbとして記録する。
AULは以下の式により計算される。
AUL0.7psi[g/g]=[Wb−Wa]/[Wa−W0]
3.塩水流れ伝導性(SFC)
SFCを決定する試験法は米国特許第5599335号に記載される。
BBS(30分)値を決定する試験方法、すなわち超吸収剤の膨張の開始から測定までの30分の経過は米国特許第6121509号に記載される。BBS(16時間)値の決定はBBS(30分)値の決定と同様であるが、超吸収剤の膨張の開始から測定まで16時間経過する。米国特許第6121509号から出発して貯蔵容器をはかりに載せ、測定セルを高さが調節できるプラットホームに載せる。30分後もしくは16時間後にスチールおもりを取り出し、測定のために試料を測定装置に移す。BBSは吸水ポリマーの湿潤強度の尺度である。
16時間後の抽出可能な部分をISO/DIS17190−10(EDANA(European Disposables and Nonwoven Association)により得られる)により決定する。
例
表面後架橋ポリマーの製造
アクリル酸、アクリル酸ナトリウム、エトキシル化トリメチロールプロパントリアクリレートを一般的な方法で重合し、遠心保留能力(Centrifuge Retention Capacity)30〜31g/gおよびアクリル酸に関する中和の程度75モル%を有するベースポリマーを製造した。重合したゲルを機械的に粉砕した。粉砕したゲルを引き続き実験用乾燥棚内で乾燥し、実験用ロールミルを使用して粉砕し、最後に150〜850μmでふるい分けした。得られたベースポリマーに、粉末混合装置中で二物質ノズルを使用して、表面後架橋剤水溶液(オキサゾリジノン0.08質量%、ソルビタンモノラウレート0.02質量%、および1,2−プロパンジオール3.5質量%、それぞれの%はベースポリマーに関する)を噴霧し、その後硫酸アルミニウム(ベースポリマーに介して26.8%水溶液として)0.5質量%を噴霧し、175〜180℃で約80分間熱処理した。室温に冷却後、粉末を150〜850μmの粒度にふるい分けして、塊を除去した。ポリマーは以下の粒度分布を有した。850μmより大きい:0.14%、300〜600μm:35.8%、150〜300μm:63.3%、150μm未満:0.1%未満。ポリマーの特性値を比較のために表1に示す。
Claims (12)
- (a)吸水剤ポリマーの粒子および
(b)窒素含有ポリマーの全質量に対して5〜17モル/kgのプロトン化可能な窒素原子を有する窒素含有ポリマー
からなる吸水剤。 - 窒素含有ポリマーがN−ビニルカルボン酸アミドおよび/またはN−ビニルカルボン酸イミドのホモポリマーまたはコポリマーの加水分解生成物である請求項1記載の吸水剤。
- 粒子の98質量%より多くが100〜850μmの粒度である粒度分布、
少なくとも30×10−7cm3・s/gの塩水流れ伝導率、
少なくとも50gfのボール破裂強度BBS(30分)、
少なくとも50gfのボール破裂強度BBS(16時間)および
[BBS(30分)−BBS(16時間)]/BBS(30分)の商0.8未満
を有することを特徴とする請求項1または2記載の吸水剤。 - 窒素含有ポリマーがN−ビニルホルムアミドのホモポリマーの加水分解生成物であるが、30〜80モル%の範囲の加水分解の程度を有する請求項2記載の吸水剤。
- 窒素含有ポリマーが10000〜500000ドルトンの範囲の質量平均分子量を有する請求項1または2記載の吸水剤。
- 吸水剤ポリマーの質量に対して窒素含有ポリマー0.001〜5質量%を含有する請求項1から5までのいずれか1項記載の吸水剤。
- 更に微粒子状水不溶性塩を含有する請求項1から6までのいずれか1項記載の吸水剤。
- 吸水剤ポリマーが、
モノエチレン系不飽和酸およびその塩からなる群から選択される少なくとも1種のモノマーA49.9〜99.9質量%、
前記モノマーAと異なる少なくとも1種のモノエチレン系不飽和モノマーB0〜50質量%、および
少なくとも1種の架橋性モノマーC0.001〜20質量%
から形成される請求項1から7までのいずれか1項記載の吸水剤。 - 吸水剤ポリマーの粒子が表面後架橋されている請求項1から8までのいずれか1項記載の吸水剤。
- 更にセルロース、変性セルロース、レーヨン、ポリプロピレン、ポリエステル、親水化ナイロン、ポリエチレン、ポリアクリル酸、ポリアミド、ポリスチレン、ポリウレタンおよびポリアクリロニトリルからなる群から選択される担体を含有する請求項1から9までのいずれか1項記載の吸水剤。
- 窒素含有ポリマーが担体に被覆されている請求項10記載の吸水剤。
- 窒素含有ポリマーまたはその溶液を吸水剤ポリマーの粒子に被覆し、場合により乾燥する、請求項1から11までのいずれか1項記載の吸水剤を製造する方法。
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DE10239074A DE10239074A1 (de) | 2002-08-26 | 2002-08-26 | Wasserabsorbierendes Mittel und Verfahren zu seiner Herstellung |
PCT/EP2003/009406 WO2004024816A1 (de) | 2002-08-26 | 2003-08-25 | Wasserabsorbierendes mittel und verfahren zu seiner herstellung |
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AU (1) | AU2003264101A1 (ja) |
BR (1) | BR0313757A (ja) |
CA (1) | CA2496448A1 (ja) |
DE (2) | DE10239074A1 (ja) |
ES (1) | ES2271690T3 (ja) |
MX (1) | MXPA05001851A (ja) |
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- 2003-08-25 DE DE50304676T patent/DE50304676D1/de not_active Expired - Lifetime
- 2003-08-25 US US10/523,913 patent/US20050245684A1/en not_active Abandoned
- 2003-08-25 EP EP03794935A patent/EP1537177B1/de not_active Expired - Lifetime
- 2003-08-25 JP JP2004535157A patent/JP4278613B2/ja not_active Expired - Lifetime
- 2003-08-25 AT AT03794935T patent/ATE336548T1/de not_active IP Right Cessation
- 2003-08-25 CA CA002496448A patent/CA2496448A1/en not_active Abandoned
- 2003-08-25 KR KR1020057003202A patent/KR20050038033A/ko not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
---|---|
DE50304676D1 (de) | 2006-09-28 |
KR20050038033A (ko) | 2005-04-25 |
MXPA05001851A (es) | 2005-06-03 |
DE10239074A1 (de) | 2004-03-11 |
ATE336548T1 (de) | 2006-09-15 |
AU2003264101A1 (en) | 2004-04-30 |
EP1537177B1 (de) | 2006-08-16 |
PL209646B1 (pl) | 2011-09-30 |
CN1678681A (zh) | 2005-10-05 |
JP4278613B2 (ja) | 2009-06-17 |
ES2271690T3 (es) | 2007-04-16 |
CN1315941C (zh) | 2007-05-16 |
EP1537177A1 (de) | 2005-06-08 |
CA2496448A1 (en) | 2004-03-25 |
BR0313757A (pt) | 2005-06-21 |
WO2004024816A1 (de) | 2004-03-25 |
US20050245684A1 (en) | 2005-11-03 |
PL375783A1 (en) | 2005-12-12 |
ZA200502432B (en) | 2005-10-04 |
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