JP2015500351A - 熱により表面後架橋された吸水性ポリマー粒子の製造方法 - Google Patents
熱により表面後架橋された吸水性ポリマー粒子の製造方法 Download PDFInfo
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- JP2015500351A JP2015500351A JP2014541625A JP2014541625A JP2015500351A JP 2015500351 A JP2015500351 A JP 2015500351A JP 2014541625 A JP2014541625 A JP 2014541625A JP 2014541625 A JP2014541625 A JP 2014541625A JP 2015500351 A JP2015500351 A JP 2015500351A
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- Prior art keywords
- water
- polymer particles
- acid
- absorbing polymer
- polyvalent metal
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- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- VFNGKCDDZUSWLR-UHFFFAOYSA-N disulfuric acid Chemical compound OS(=O)(=O)OS(O)(=O)=O VFNGKCDDZUSWLR-UHFFFAOYSA-N 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229940088598 enzyme Drugs 0.000 description 1
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- WIGCFUFOHFEKBI-UHFFFAOYSA-N gamma-tocopherol Natural products CC(C)CCCC(C)CCCC(C)CCCC1CCC2C(C)C(O)C(C)C(C)C2O1 WIGCFUFOHFEKBI-UHFFFAOYSA-N 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 235000019420 glucose oxidase Nutrition 0.000 description 1
- 229940116332 glucose oxidase Drugs 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- 229920001477 hydrophilic polymer Polymers 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 229910001463 metal phosphate Inorganic materials 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- MENOBBYDZHOWLE-UHFFFAOYSA-N morpholine-2,3-dione Chemical compound O=C1NCCOC1=O MENOBBYDZHOWLE-UHFFFAOYSA-N 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000002891 organic anions Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229960003330 pentetic acid Drugs 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-N peroxydisulfuric acid Chemical compound OS(=O)(=O)OOS(O)(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920000083 poly(allylamine) Polymers 0.000 description 1
- 229920000962 poly(amidoamine) Polymers 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002851 polycationic polymer Polymers 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 239000004633 polyglycolic acid Substances 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 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
- QTECDUFMBMSHKR-UHFFFAOYSA-N prop-2-enyl prop-2-enoate Chemical compound C=CCOC(=O)C=C QTECDUFMBMSHKR-UHFFFAOYSA-N 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- YLQLIQIAXYRMDL-UHFFFAOYSA-N propylheptyl alcohol Chemical class CCCCCC(CO)CCC YLQLIQIAXYRMDL-UHFFFAOYSA-N 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910001379 sodium hypophosphite Inorganic materials 0.000 description 1
- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 159000000008 strontium salts Chemical class 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 1
- AOBORMOPSGHCAX-DGHZZKTQSA-N tocofersolan Chemical compound OCCOC(=O)CCC(=O)OC1=C(C)C(C)=C2O[C@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C AOBORMOPSGHCAX-DGHZZKTQSA-N 0.000 description 1
- 229960000984 tocofersolan Drugs 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 description 1
- 229940048102 triphosphoric acid Drugs 0.000 description 1
- VXYADVIJALMOEQ-UHFFFAOYSA-K tris(lactato)aluminium Chemical compound CC(O)C(=O)O[Al](OC(=O)C(C)O)OC(=O)C(C)O VXYADVIJALMOEQ-UHFFFAOYSA-K 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- ZTWTYVWXUKTLCP-UHFFFAOYSA-N vinylphosphonic acid Chemical class OP(O)(=O)C=C ZTWTYVWXUKTLCP-UHFFFAOYSA-N 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
- 235000004835 α-tocopherol Nutrition 0.000 description 1
- 239000002076 α-tocopherol Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
- B01J20/267—Cross-linked polymers
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use 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; Derivatives of such polymers
- C08J2333/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
Abstract
Description
a)重合されたエチレン系不飽和の酸基含有モノマー少なくとも1種、当該モノマーは、少なくとも部分的に中和されていてよく、
b)少なくとも1種の重合された架橋剤、
c)任意で、上記モノマーa)と共重合可能な1種以上のエチレン系不飽和モノマー、
d)任意で、1種以上の水溶性ポリマー、及び
e)少なくとも1種の、反応された表面後架橋剤
を含有する吸水性ポリマー粒子の提供によって解決され、
前記吸水性ポリマー粒子は、一般式(I)
上記式中、
Mは、少なくとも1種の多価金属カチオンであり、
Xは、少なくとも1種の酸アニオンであり、
aは、0〜n/mの数であり、ここでmは酸アニオンの負の荷電数であり、nは多価金属カチオンの正の荷電数であり、かつ
bは、0〜nの数である。
本発明のさらなる対象は、以下のi)〜iv):
i)少なくとも1種のエチレン系不飽和の酸基含有モノマー、当該モノマーは、少なくとも部分的に中和されていてよく、
ii)少なくとも1種の架橋剤、
iii)任意で、上記モノマーi)と共重合可能な1種以上のエチレン系不飽和モノマー、及び
iv)任意で、1種以上の水溶性ポリマー、
を含有するモノマー溶液又はモノマー懸濁液を重合させることによる吸水性ポリマー粒子の製造方法であって、
得られたポリマーゲルを乾燥、粉砕、分級し、
v)少なくとも1種の表面後架橋剤
により被覆し、熱により表面後架橋する、前記製造方法において、
吸水性ポリマー粒子を、熱による表面後架橋の前、その間、又はその後に、一般式(I)
前記式中、
Mは、少なくとも1種の多価金属カチオンであり、
Xは、少なくとも1種の酸アニオンであり、
aは、0〜n/mの数であり、ここでmは酸アニオンの負の荷電数であり、nは多価金属カチオンの正の荷電数であり、かつ
bは、0〜nの数である。
モノマーi)は通常、重合阻害剤(好適にはヒドロキノン半エーテル)を、貯蔵安定剤として含有する。
R1はC1〜C12アルキル、C2〜C12ヒドロキシアルキル、C2〜C12アルケニル、又はC6〜C12アリールであり、
R2はZ、又はOR6であり、
R3は水素、C1〜C12アルキル、C2〜C12ヒドロキシアルキル、C2〜C12アルケニル、又はC6〜C12アリール、又はZであり、
R4はC1〜C12アルキル、C2〜C12ヒドロキシアルキル、C2〜C12アルケニル、又はC6〜C12アリールであり、
R5は水素、C1〜C12アルキル、C2〜C12ヒドロキシアルキル、C2〜C12アルケニル、C1〜C12アシル、又はC6〜C12アリールであり、
R6はC1〜C12アルキル、C2〜C12ヒドロキシアルキル、C2〜C12アルケニル、又はC6〜C12アリールであり、かつ
Zは、基R2及びR3に共通して、カルボニル−酸素基であり、
ここでR1とR4、及び/又はR5とR6は、架橋されたC2〜C6アルカンジイルであってよく、かつ上記基R1〜R6は、全体でさらに1〜6個の遊離価を有することができ、この遊離価によって、少なくとも1つの適切な基体と結合することができる]、又は
多価アルコール、ここで多価アルコールは好適には、ヒドロキシ基1つ当たり分子量が100g/mol未満、好ましくは90g/mol未満、特に好ましくは80g/mol未満、極めて特に好ましくは70g/mol未満であり、またビシナルな、ジェミナルな、第二級、又は第三級のヒドロキシ基を有さず、この多価アルコールは、一般式(IIIa)のジオール、
R7は、式−(CH2)p−の非分枝状のジアルキル基であり、ここでpは、2〜20の整数、好ましくは3〜12の整数であり、これら2つのヒドロキシ基は末端にあるか、又は
R7は非分枝鎖状、分枝鎖状、又は環状のジアルキル基である]、又は
一般式(IIIb)のポリオール
基R8、R9、R10、R11は相互に独立して、水素、ヒドロキシ、ヒドロキシメチル、ヒドロキシエチルオキシメチル、1−ヒドロキシプロプ−2−イルオキシメチル、2−ヒドロキシプロピルオキシメチル、メチル、エチル、n−プロピル、イソプロピル、n−ブチル、n−ペンチル、n−ヘキシル、1,2−ジヒドロキシエチル、2−ヒドロキシエチル、3−ヒドロキシプロピル、又は4−ヒドロキシブチルであり、合計で2個、3個、又は4個、好ましくは2個又は3個のヒドロキシ基が存在し、基R8、R9、R10、又はR11のうち1つより多くがヒドロキシ基であることはない]、又は、
一般式(IV)の環状カーボネート
一般式(V)のビスオキサゾリン、
である。
特に記載しない限り測定は、周辺温度23±2℃、相対湿度50±10%で行う。吸水性ポリマー粒子は、測定の前に良好に完全混合する。
遠心分離保持力(CRC)は、EDANA推奨の試験方式No. WSP 241.2-05 "Centrifuge Retention Capacity"に従って測定するが、各例について、そこに記載された粒子分布を有する実際の試料を測定する。
49.2g/cm2(AUL0.7psi)の圧力下での吸収性は、EDANA推奨の試験方式No. WSP 242.2-05 "Absorption Under Pressure"と同様に測定するのだが、この21.0g/cm2の圧力(AUL0.3psi)ではなく、49.2g/cm2の圧力(AUL0.7psi)に調整し、各例について、そこに記載された粒子分布を有する実際の試料を測定する。
膨潤したゲル層のゲル床透過性(GBP)は、0.3psi(2070Pa)という負荷圧力で、US 2005/0256757に記載されたように(段落[0061]、及び[0075])、吸水性ポリマー粒子製の膨潤したゲル層のゲル床透過性として、測定する。
膨潤速度(FSR)測定のために、吸水性ポリマー粒子1.00g(W=1)を25mlのガラスビーカーに秤量し、その底部に均一に分布させた。それからディスペンサーによって、0.9質量%の食塩水を第二のガラスビーカーに供給し、このガラスビーカーの内容物を、第一のビーカーに素早く入れ、ストップウォッチによる測定を開始した。食塩水の最後の一滴が吸収され次第(液体表面における反射によりわかる)、ストップウォッチを停止させる。第二のガラスビーカーから注ぎ込んだ正確な液体量、及びポリマーによって第一のガラスビーカーに吸収された正確な液体量は、第二のガラスビーカーを再度秤量することにより、正確に特定する(W=2)。ストップウォッチで測定した、吸収に必要な時間は、tとする。表面における最後の液滴の消滅は、時点tとする。
ベースポリマーの製造:
例1:
脱イオン水、50質量%の水酸化ナトリウム溶液、及びアクリル酸を連続的に混合することにより、アクリル酸/アクリル酸ナトリウム溶液を製造し、これにより中和度は71mol%に相当した。モノマー溶液の固体含分は、40質量%であった。
モノマー溶液 18t/h
3回エトキシ化されたグリセリントリアクリレート 27kg/h
過酸化水素溶液/ペルオキソ二硫酸ナトリウム溶液 45kg/h
アスコルビン酸溶液 18kg/h。
800μm未満 2.5質量%
300〜600μm 82.6質量%
200〜300μm 11.0質量%
100〜200μm 3.7質量%
100μm未満 0.2質量%。
例2
500mlの四つ首丸底フラスコに、水酸化アルミニウム43.0g(552mmol)を装入した。このフラスコを、80℃に予熱した油浴に浸した。250mlの水を添加し、マグネチックスターラ加熱板を用いて撹拌子により、ゆっくりと連続的に撹拌した。続いて、この混合物に乳酸アミド(約98質量%)49.1g(552mmol)を加えた。さらに熱量計、気泡測定器をフラスコに設置し、この混合物を一晩、75℃で撹拌した(15時間)。この溶液を引き続き冷却し、さらなる後処理無しで直接使用した。
例2と同様の方法を行ったのだが、ここでは水酸化アルミニウム10.6g(136mmol)、乳酸アミド36.3g(408mmol)、及び水120mlを使用した。
例2と同様の方法を行ったのだが、ここでは水酸化アルミニウム22.1g(283mmol)、乳酸76.5g(850mmol)、及び水250mlを使用した。
例5
容量が5lのシャベル型乾燥機Pflugscha(登録商標)M5RMK型(ドイツ国、Paderborn在、Loedige Maschinenbau GmbH社製)に、例1のベースポリマーを1.2kg装入した。周辺温度(23℃)で、撹拌下(200回転/分)、約80秒以内に、窒素稼働式の2成分ノズルを用いて、それぞれベースポリマーに対して、N−(2−ヒドロキシエチル)−オキサゾリジノン0.007質量%、1,3−プロパンジオール0.07質量%、例2の水酸化アルミニウム/乳酸アミド錯体(約25質量%の水溶液)1.50質量%、プロピレングリコール0.30質量%、イソプロパノール1.00質量%、水1.00質量%からの混合物を噴霧し、さらに5分間後撹拌した(60回転/分)。続いて、撹拌下で反応器ジャケットを加熱液体により加熱した。この加熱は、生成物ができるかぎり早く180℃という目的温度に達し、それから安定的に撹拌下で温度調整されるように行った。ここで反応器には、窒素を負荷した。それから規則的に、表に記載した時間(加熱開始後の時間)に、試料を取り出し、特性を測定した。その結果が、表1にまとめてある。
例5と同様の方法で行った。シャベル型乾燥機に装入したベースポリマーを、混合物の噴霧前に50℃に加熱した。その結果が、表1にまとめてある。
例5と同様の方法で行った。シャベル型乾燥機に装入したベースポリマーを、混合物の噴霧前に50℃に加熱した。例2の水酸化アルミニウム/乳酸アミド錯体の代わりに、例3の水酸化アルミニウム/乳酸アミド錯体(約25質量%の水溶液)を使用した。その結果が、表1にまとめてある。
例5と同様の方法で行った。シャベル型乾燥機に装入したベースポリマーを、混合物の噴霧前に50℃に加熱した。例2の水酸化アルミニウム/乳酸アミド錯体の代わりに、例4のトリ乳酸アルミニウム(約25質量%の水溶液)を使用した。その結果が、表1にまとめてある。
Claims (15)
- 以下の成分i)〜iv):
i)少なくとも1種のエチレン系不飽和の酸基含有モノマー、当該モノマーは、少なくとも部分的に中和されていてよく、
ii)少なくとも1種の架橋剤、
iii)任意で、上記モノマーi)と共重合可能な1種以上のエチレン系不飽和モノマー、及び
iv)任意で、1種以上の水溶性ポリマー、
を含有するモノマー溶液又はモノマー懸濁液を重合させることによる、吸水性ポリマー粒子の製造方法であって、
得られたポリマーゲルを乾燥、粉砕、分級し、
v)少なくとも1種の表面後架橋剤
により被覆し、熱により表面後架橋する、前記製造方法において、
吸水性ポリマー粒子を、熱による表面後架橋の前、その間、又はその後に、一般式(I)
前記式中、
Mは、少なくとも1種の多価金属カチオンであり、
Xは、少なくとも1種の酸アニオンであり、
aは、0〜n/mの数であり、ここでmは酸アニオンの負の荷電数であり、nは多価金属カチオンの正の荷電数であり、かつ
bは、0〜nの数である、前記製造方法。 - 前記多価金属カチオンが、Al3+、Ti4+、及びZr4+の群から選択されることを特徴とする、請求項1に記載の製造方法。
- 前記酸アニオンが、酢酸イオン、プロピオン酸イオン、グリコール酸イオン、乳酸イオン、メタンスルホン酸イオン、及び硫酸イオンの群から選択されることを特徴とする、請求項1又は2に記載の製造方法。
- 前記2−ヒドロキシカルボン酸アミドが、グリコール酸アミド、及び乳酸アミドの群から選択されることを特徴とする、請求項1から3までのいずれか1項に記載の製造方法。
- 前記錯体が、前記2−ヒドロキシカルボン酸アミドを、前記多価金属カチオンに対して0.5〜1.5mol含有することを特徴とする、請求項1から4までのいずれか1項に記載の製造方法。
- 前記錯体を、前記吸水性ポリマー粒子に対して0.1〜1質量%使用することを特徴とする、請求項1から5までのいずれか1項に記載の製造方法。
- 前記錯体を水溶液として使用することを特徴とする、請求項1から6までのいずれか1項に記載の製造方法。
- 請求項1から7までのいずれか1項に記載の製造方法により得られる、吸水性ポリマー粒子。
- 以下の成分a)〜e):
a)重合されたエチレン系不飽和の酸基含有モノマー少なくとも1種、当該モノマーは、少なくとも部分的に中和されていてよく、
b)少なくとも1種の、重合された架橋剤、
c)任意で、上記モノマーa)と共重合可能な1種以上のエチレン系不飽和モノマー、
d)任意で、1種以上の水溶性ポリマー、及び
e)少なくとも1種の、反応された表面後架橋剤
を含有する、吸水性ポリマー粒子であって、
前記吸水性ポリマー粒子は、一般式(I)
上記式中、
Mは、少なくとも1種の多価金属カチオンであり、
Xは、少なくとも1種の酸アニオンであり、
aは、0〜n/mの数であり、ここでmは酸アニオンの負の荷電数であり、nは多価金属カチオンの正の荷電数であり、かつ
bは、0〜nの数である、前記吸水性ポリマー粒子。 - 前記多価金属カチオンが、Al3+、Ti4+、及びZr4+の群から選択されている、請求項9に記載のポリマー粒子。
- 前記酸アニオンが、酢酸イオン、プロピオン酸イオン、グリコール酸イオン、乳酸イオン、メタンスルホン酸イオン、及び硫酸イオンの群から選択されている、請求項9又は10に記載のポリマー粒子。
- 前記2−ヒドロキシカルボン酸アミドが、グリコール酸アミド、及び乳酸アミドの群から選択される、請求項9から11までのいずれか1項に記載のポリマー粒子。
- 前記錯体が、前記2−ヒドロキシカルボン酸アミドを、前記多価金属カチオンに対して0.5〜1.5mol含有する、請求項10から12までのいずれか1項に記載のポリマー粒子。
- 前記錯体を0.1〜1質量%含有する、請求項10から13までのいずれか1項に記載のポリマー粒子。
- 請求項10から14までのいずれか1項に記載の吸水性ポリマー粒子を含有する、衛生用品。
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JPWO2016158689A1 (ja) * | 2015-03-30 | 2018-01-25 | 住友精化株式会社 | 包装袋体および包装物品 |
US11667457B2 (en) | 2015-03-30 | 2023-06-06 | Sumitomo Seika Chemicals Co., Ltd. | Packaging bag and packaged product |
JP2019518815A (ja) * | 2016-12-26 | 2019-07-04 | エルジー・ケム・リミテッド | 多孔性高吸水性樹脂の製造方法 |
US10562992B2 (en) | 2016-12-26 | 2020-02-18 | Lg Chem, Ltd. | Preparation method of porous super absorbent polymer |
JP2021521298A (ja) * | 2018-04-10 | 2021-08-26 | ビーエイエスエフ・ソシエタス・エウロパエアBasf Se | 浸透性超吸収体、及びそれを製造する方法 |
JP7361714B2 (ja) | 2018-04-10 | 2023-10-16 | ビーエーエスエフ ソシエタス・ヨーロピア | 浸透性超吸収体、及びそれを製造する方法 |
Also Published As
Publication number | Publication date |
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EP2780044A1 (de) | 2014-09-24 |
EP2780044B1 (de) | 2017-01-11 |
WO2013072311A1 (de) | 2013-05-23 |
JP6092240B2 (ja) | 2017-03-08 |
CN103974726B (zh) | 2016-05-18 |
CN103974726A (zh) | 2014-08-06 |
US9126186B2 (en) | 2015-09-08 |
US20130310250A1 (en) | 2013-11-21 |
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