DE69230964T2 - Steigerung der Absorptionsgeschwindigkeit von superabsorbierenden Polymeren durch Einsatz eines Treibmittels - Google Patents
Steigerung der Absorptionsgeschwindigkeit von superabsorbierenden Polymeren durch Einsatz eines TreibmittelsInfo
- Publication number
- DE69230964T2 DE69230964T2 DE69230964T DE69230964T DE69230964T2 DE 69230964 T2 DE69230964 T2 DE 69230964T2 DE 69230964 T DE69230964 T DE 69230964T DE 69230964 T DE69230964 T DE 69230964T DE 69230964 T2 DE69230964 T2 DE 69230964T2
- Authority
- DE
- Germany
- Prior art keywords
- blowing agent
- monomer
- weight
- crosslinker
- carbonated
- 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.)
- Expired - Lifetime
Links
- 239000004604 Blowing Agent Substances 0.000 title claims description 41
- 229920000247 superabsorbent polymer Polymers 0.000 title claims description 19
- 238000010521 absorption reaction Methods 0.000 title description 5
- 239000004583 superabsorbent polymers (SAPs) Substances 0.000 title description 5
- 239000000178 monomer Substances 0.000 claims description 62
- 239000000203 mixture Substances 0.000 claims description 40
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 25
- 239000004971 Cross linker Substances 0.000 claims description 24
- 238000006116 polymerization reaction Methods 0.000 claims description 21
- 229920000642 polymer Polymers 0.000 claims description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 12
- 239000000017 hydrogel Substances 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 11
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 10
- 239000001095 magnesium carbonate Substances 0.000 claims description 10
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 10
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 10
- 239000003999 initiator Substances 0.000 claims description 8
- -1 poly allyl ester Chemical class 0.000 claims description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 7
- 229920005862 polyol Polymers 0.000 claims description 7
- 150000003077 polyols Chemical class 0.000 claims description 7
- 150000003254 radicals Chemical class 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 230000002745 absorbent Effects 0.000 claims description 6
- 239000002250 absorbent Substances 0.000 claims description 6
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 6
- DYUWTXWIYMHBQS-UHFFFAOYSA-N n-prop-2-enylprop-2-en-1-amine Chemical compound C=CCNCC=C DYUWTXWIYMHBQS-UHFFFAOYSA-N 0.000 claims description 6
- VPYJNCGUESNPMV-UHFFFAOYSA-N triallylamine Chemical compound C=CCN(CC=C)CC=C VPYJNCGUESNPMV-UHFFFAOYSA-N 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 5
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 5
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical group C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 4
- UWFRVQVNYNPBEF-UHFFFAOYSA-N 1-(2,4-dimethylphenyl)propan-1-one Chemical compound CCC(=O)C1=CC=C(C)C=C1C UWFRVQVNYNPBEF-UHFFFAOYSA-N 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 claims description 3
- 229940047670 sodium acrylate Drugs 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 3
- 206010021639 Incontinence Diseases 0.000 claims description 2
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- DBSDMAPJGHBWAL-UHFFFAOYSA-N penta-1,4-dien-3-ylbenzene Chemical compound C=CC(C=C)C1=CC=CC=C1 DBSDMAPJGHBWAL-UHFFFAOYSA-N 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- 238000010526 radical polymerization reaction Methods 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 229910019440 Mg(OH) Inorganic materials 0.000 claims 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 claims 2
- 235000010216 calcium carbonate Nutrition 0.000 claims 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims 1
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 claims 1
- ONIOAEVPMYCHKX-UHFFFAOYSA-N carbonic acid;zinc Chemical compound [Zn].OC(O)=O ONIOAEVPMYCHKX-UHFFFAOYSA-N 0.000 claims 1
- 150000001451 organic peroxides Chemical class 0.000 claims 1
- 239000011736 potassium bicarbonate Substances 0.000 claims 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims 1
- 235000015497 potassium bicarbonate Nutrition 0.000 claims 1
- 235000015320 potassium carbonate Nutrition 0.000 claims 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims 1
- 235000017557 sodium bicarbonate Nutrition 0.000 claims 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims 1
- SPDUKHLMYVCLOA-UHFFFAOYSA-M sodium;ethaneperoxoate Chemical compound [Na+].CC(=O)O[O-] SPDUKHLMYVCLOA-UHFFFAOYSA-M 0.000 claims 1
- 239000011667 zinc carbonate Substances 0.000 claims 1
- 235000004416 zinc carbonate Nutrition 0.000 claims 1
- 229910000010 zinc carbonate Inorganic materials 0.000 claims 1
- 239000000243 solution Substances 0.000 description 27
- 239000000499 gel Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 11
- 150000003839 salts Chemical class 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 150000001768 cations Chemical class 0.000 description 6
- 210000002700 urine Anatomy 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 239000003380 propellant Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 210000001124 body fluid Anatomy 0.000 description 3
- 239000010839 body fluid Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- HNRMPXKDFBEGFZ-UHFFFAOYSA-N ethyl trimethyl methane Natural products CCC(C)(C)C HNRMPXKDFBEGFZ-UHFFFAOYSA-N 0.000 description 2
- 239000011953 free-radical catalyst Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 239000007762 w/o emulsion Substances 0.000 description 2
- OYKPJMYWPYIXGG-UHFFFAOYSA-N 2,2-dimethylbutane;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(C)(C)C OYKPJMYWPYIXGG-UHFFFAOYSA-N 0.000 description 1
- PRAMZQXXPOLCIY-UHFFFAOYSA-N 2-(2-methylprop-2-enoyloxy)ethanesulfonic acid Chemical compound CC(=C)C(=O)OCCS(O)(=O)=O PRAMZQXXPOLCIY-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 1
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 1
- SZTBMYHIYNGYIA-UHFFFAOYSA-N 2-chloroacrylic acid Chemical compound OC(=O)C(Cl)=C SZTBMYHIYNGYIA-UHFFFAOYSA-N 0.000 description 1
- IJVRPNIWWODHHA-UHFFFAOYSA-N 2-cyanoprop-2-enoic acid Chemical compound OC(=O)C(=C)C#N IJVRPNIWWODHHA-UHFFFAOYSA-N 0.000 description 1
- WROUWQQRXUBECT-UHFFFAOYSA-N 2-ethylacrylic acid Chemical compound CCC(=C)C(O)=O WROUWQQRXUBECT-UHFFFAOYSA-N 0.000 description 1
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 1
- GQTFHSAAODFMHB-UHFFFAOYSA-N 2-prop-2-enoyloxyethanesulfonic acid Chemical compound OS(=O)(=O)CCOC(=O)C=C GQTFHSAAODFMHB-UHFFFAOYSA-N 0.000 description 1
- KFNGWPXYNSJXOP-UHFFFAOYSA-N 3-(2-methylprop-2-enoyloxy)propane-1-sulfonic acid Chemical compound CC(=C)C(=O)OCCCS(O)(=O)=O KFNGWPXYNSJXOP-UHFFFAOYSA-N 0.000 description 1
- ATVJXMYDOSMEPO-UHFFFAOYSA-N 3-prop-2-enoxyprop-1-ene Chemical compound C=CCOCC=C ATVJXMYDOSMEPO-UHFFFAOYSA-N 0.000 description 1
- NYUTUWAFOUJLKI-UHFFFAOYSA-N 3-prop-2-enoyloxypropane-1-sulfonic acid Chemical compound OS(=O)(=O)CCCOC(=O)C=C NYUTUWAFOUJLKI-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 150000001253 acrylic acids Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000013011 aqueous formulation Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000013060 biological fluid Substances 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- FPODCVUTIPDRTE-UHFFFAOYSA-N bis(prop-2-enyl) hexanedioate Chemical compound C=CCOC(=O)CCCCC(=O)OCC=C FPODCVUTIPDRTE-UHFFFAOYSA-N 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 150000005323 carbonate salts Chemical class 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940006199 ferric cation Drugs 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 159000000011 group IA salts Chemical class 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 235000001055 magnesium Nutrition 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 235000012254 magnesium hydroxide Nutrition 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 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
- 230000003472 neutralizing effect Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 231100000683 possible toxicity Toxicity 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical class OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229920003176 water-insoluble polymer Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/125—Water, e.g. hydrated salts
-
- 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
- A61L15/425—Porous materials, e.g. foams or sponges
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
-
- 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
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- General Chemical & Material Sciences (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/781,526 US5118719A (en) | 1991-10-22 | 1991-10-22 | Enhancing absorption rates of superabsorbents by incorporating a blowing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69230964D1 DE69230964D1 (de) | 2000-05-31 |
| DE69230964T2 true DE69230964T2 (de) | 2000-11-09 |
Family
ID=25123018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69230964T Expired - Lifetime DE69230964T2 (de) | 1991-10-22 | 1992-06-10 | Steigerung der Absorptionsgeschwindigkeit von superabsorbierenden Polymeren durch Einsatz eines Treibmittels |
Country Status (5)
Families Citing this family (71)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4308347A1 (de) * | 1993-03-17 | 1994-09-29 | Beiersdorf Ag | Hydrophile Polyurethanschaumgele, insbesondere zur Behandlung von tiefen Wunden und Verfahren zu deren Herstellung |
| US5338766A (en) * | 1993-03-26 | 1994-08-16 | The Procter & Gamble Company | Superabsorbent polymer foam |
| US5328935A (en) * | 1993-03-26 | 1994-07-12 | The Procter & Gamble Company | Method of makig a superabsorbent polymer foam |
| IL110134A (en) * | 1993-07-09 | 1998-07-15 | Stockhausen Chem Fab Gmbh | Polymers capable of absorbing aqueous liquids and body fluids their preparation and use |
| DE4418818C2 (de) * | 1993-07-09 | 1997-08-21 | Stockhausen Chem Fab Gmbh | Pulverförmige, vernetzte, wäßrige Flüssigkeiten und/oder Körperflüssigkeiten absorbierende Polymere, Verfahren zu ihrer Herstellung und ihre Anwendung |
| US5451613A (en) * | 1993-09-17 | 1995-09-19 | Nalco Chemical Company | Superabsorbent polymer having improved absorption rate and absorption under pressure |
| US5314420A (en) * | 1993-09-17 | 1994-05-24 | Nalco Chemical Company | Superabsorbent polymer having improved absorption rate and absorption under pressure |
| BR9506830A (pt) * | 1994-02-17 | 1997-10-14 | Procter & Gamble | Material absorvente poroso dotado de caracteristicas de superficie modificadas artigo absorvente e processo para produzir esse material |
| US5849405A (en) * | 1994-08-31 | 1998-12-15 | The Procter & Gamble Company | Absorbent materials having improved absorbent property and methods for making the same |
| US5610208A (en) | 1994-02-17 | 1997-03-11 | Nippon Shokubai Co., Ltd. | Water-absorbent agent, method for production thereof, and water-absorbent composition |
| US5843575A (en) * | 1994-02-17 | 1998-12-01 | The Procter & Gamble Company | Absorbent members comprising absorbent material having improved absorbent property |
| US5599335A (en) * | 1994-03-29 | 1997-02-04 | The Procter & Gamble Company | Absorbent members for body fluids having good wet integrity and relatively high concentrations of hydrogel-forming absorbent polymer |
| US5372766A (en) * | 1994-03-31 | 1994-12-13 | The Procter & Gamble Company | Flexible, porous, absorbent, polymeric macrostructures and methods of making the same |
| US5830543A (en) | 1994-05-30 | 1998-11-03 | Nippon Shokubai Co., Ltd. | Gelling material for aqueous fluids |
| AU2966395A (en) | 1994-08-01 | 1996-03-04 | Leonard Pearlstein | High performance superabsorbent material and absorbent devices containing the same |
| US5849816A (en) * | 1994-08-01 | 1998-12-15 | Leonard Pearlstein | Method of making high performance superabsorbent material |
| US5549590A (en) * | 1994-08-01 | 1996-08-27 | Leonard Pearlstein | High performance absorbent particles and methods of preparation |
| US5693707A (en) * | 1994-09-16 | 1997-12-02 | Air Products And Chemicals, Inc. | Liquid absorbent composition for nonwoven binder applications |
| EP0744435B2 (en) * | 1994-12-08 | 2011-03-23 | Nippon Shokubai Co., Ltd. | Water-absorbent resin, process for production thereof, and water-absorbent resin composition |
| US5500451A (en) * | 1995-01-10 | 1996-03-19 | The Procter & Gamble Company | Use of polyglycerol aliphatic ether emulsifiers in making high internal phase emulsions that can be polymerized to provide absorbent foams |
| DE19607551A1 (de) * | 1996-02-28 | 1997-09-04 | Basf Ag | Wasserabsorbierende, schaumförmige, vernetzte Polymerisate, Verfahren zu ihrer Herstellung und ihre Verwendung |
| US6107358A (en) * | 1996-08-23 | 2000-08-22 | Nippon Shokubai Co., Ltd. | Water-absorbent resin and method for production thereof |
| ID20756A (id) * | 1996-10-24 | 1999-02-25 | Nippon Catalytic Chem Ind | Proses produksi resin penyerap air |
| JP4141526B2 (ja) | 1998-04-07 | 2008-08-27 | 株式会社日本触媒 | 吸水性樹脂の製造方法 |
| DE19909214A1 (de) | 1999-03-03 | 2000-09-07 | Basf Ag | Wasserabsorbierende, schaumförmige, vernetzte Polymerisate mit verbesserter Verteilungswirkung, Verfahren zu ihrer Herstellung und ihre Verwendung |
| US20010006267A1 (en) | 1999-12-27 | 2001-07-05 | Nobuyuki Harada | Production processes for basic water-absorbent resin and water-absorbing agent, and use thereof |
| US6833488B2 (en) | 2001-03-30 | 2004-12-21 | Exotech Bio Solution Ltd. | Biocompatible, biodegradable, water-absorbent material and methods for its preparation |
| DE10231356B4 (de) * | 2002-07-11 | 2007-02-15 | Stockhausen Gmbh | Wasserabsorbierende, schaumförmige Polymergebilde, Verfahren zu deren Herstellung, deren Verwendung sowie daraus hergestellte Verbunde |
| US7425595B2 (en) * | 2003-12-15 | 2008-09-16 | Absorbent Technologies, Inc. | Superabsorbent polymer products including a beneficial additive and methods of making and application |
| TR201905649T4 (tr) * | 2003-12-15 | 2019-05-21 | Vjs Investments Ltd | Biyoaktif, büyüme destekleyici bir katkı maddesi içeren bir süper absorban polimer ürünü. |
| US7163966B2 (en) * | 2003-12-19 | 2007-01-16 | Stockhausen, Inc. | Superabsorbent polymer having increased rate of water absorption |
| CA2576967A1 (en) * | 2004-08-27 | 2006-03-09 | Absorbent Technologies, Inc. | Superabsorbent polymers in agricultural applications |
| DE102005042606A1 (de) | 2005-09-07 | 2007-03-08 | Basf Ag | Neutralisationsverfahren |
| US20070163172A1 (en) * | 2006-01-17 | 2007-07-19 | Savich Milan H | Biodegradable mat containing superabsorbent polymers |
| US7607259B2 (en) * | 2006-01-17 | 2009-10-27 | Absorbent Technologies, Inc. | Superabsorbent polymer root dip |
| US20070167330A1 (en) * | 2006-01-17 | 2007-07-19 | Savich Milan H | Superabsorbent polymer applicator |
| DE102006042687A1 (de) * | 2006-09-12 | 2008-03-27 | Wacker Chemie Ag | Mikrowellenschaum |
| CN104231144B (zh) | 2009-02-17 | 2018-05-15 | 株式会社日本触媒 | 聚丙烯酸系吸水性树脂粉末及其制造方法 |
| JP2012522633A (ja) * | 2009-04-03 | 2012-09-27 | ウンジン コーウェイ カンパニー リミテッド | 生ゴミ処理機のフィルター装置 |
| DE102009016404A1 (de) | 2009-04-07 | 2010-10-21 | Evonik Stockhausen Gmbh | Verwendung von Hohlkörpern zur Herstellung wasserabsorbierender Polymergebilde |
| EP2238957A1 (en) | 2009-04-10 | 2010-10-13 | The Procter & Gamble Company | Absorbent core |
| DE102009040949A1 (de) | 2009-09-11 | 2011-03-31 | Evonik Stockhausen Gmbh | Plasmamodifizierung wasserabsorbierender Polymergebilde |
| CN102498135B (zh) | 2009-09-16 | 2014-02-19 | 株式会社日本触媒 | 吸水性树脂粉末的制造方法 |
| JP2013511612A (ja) * | 2009-11-23 | 2013-04-04 | ビーエーエスエフ ソシエタス・ヨーロピア | 発泡された吸水ポリマー粒子の製造方法 |
| WO2011078298A1 (ja) | 2009-12-24 | 2011-06-30 | 株式会社日本触媒 | ポリアクリル酸系吸水性樹脂粉末及びその製造方法 |
| EP2557095B1 (en) * | 2010-04-07 | 2016-10-05 | Nippon Shokubai Co., Ltd. | Method for producing water absorbent polyacrylic acid (salt) resin powder, and water absorbent polyacrylic acid (salt) resin powder |
| US8765906B2 (en) | 2010-04-27 | 2014-07-01 | Nippon Shokubai, Co., Ltd. | Method for producing polyacrylic acid (salt) type water absorbent resin powder |
| WO2012002455A1 (ja) | 2010-06-30 | 2012-01-05 | 株式会社日本触媒 | ポリアクリル酸系吸水性樹脂及びその製造方法 |
| US9596801B2 (en) | 2010-10-25 | 2017-03-21 | Vjs Investments Limited | Superabsorbent polymer seed coatings and associated methods |
| DE102011007723A1 (de) | 2011-04-20 | 2012-10-25 | Evonik Stockhausen Gmbh | Verfahren zur Herstellung von wasserabsorbierenden Polymeren mit hoher Absorptionsgeschwindigkeit |
| CN102225981B (zh) * | 2011-04-27 | 2013-11-13 | 浙江卫星石化股份有限公司 | 多孔型丙烯酸钠高吸水性树脂的制备方法 |
| US9265855B2 (en) * | 2011-05-18 | 2016-02-23 | The Procter & Gamble Company | Feminine hygiene absorbent article comprising a superabsorbent foam of high swell rate |
| JP6109157B2 (ja) * | 2011-05-18 | 2017-04-05 | ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ | 高膨潤率の超吸収性フォームの製造 |
| CN103619919B (zh) | 2011-06-29 | 2016-07-20 | 株式会社日本触媒 | 聚丙烯酸(盐)系吸水性树脂粉末及其制造方法 |
| DE102011086516A1 (de) | 2011-11-17 | 2013-05-23 | Evonik Degussa Gmbh | Superabsorbierende Polymere mit schnellen Absorptionseigenschaften sowieVerfahren zu dessen Herstellung |
| CN102828213B (zh) * | 2012-08-28 | 2016-01-20 | 李甫文 | 链带电镀支架及使用该支架的电镀设备 |
| US9302248B2 (en) | 2013-04-10 | 2016-04-05 | Evonik Corporation | Particulate superabsorbent polymer composition having improved stability |
| EP3053831B1 (en) | 2013-09-30 | 2023-12-27 | Nippon Shokubai Co., Ltd. | Filled particulate water absorbing agent |
| KR102373041B1 (ko) | 2014-03-03 | 2022-03-11 | 가부시키가이샤 닛폰 쇼쿠바이 | 폴리아크릴산(염)계 흡수성 수지의 제조 방법 |
| KR102402261B1 (ko) | 2014-03-03 | 2022-05-26 | 가부시키가이샤 닛폰 쇼쿠바이 | 폴리아크릴산(염)계 흡수성 수지의 제조 방법 |
| KR20170002468A (ko) * | 2014-04-25 | 2017-01-06 | 송원산업 주식회사 | 카보네이트 블로잉 및 벨트 건조를 이용한 흡수성 폴리머 입자의 제조 방법 |
| US10695746B2 (en) | 2015-01-07 | 2020-06-30 | Nippon Shokubai Co., Ltd. | Water absorbent agent |
| KR101871968B1 (ko) | 2015-06-01 | 2018-06-27 | 주식회사 엘지화학 | 고흡수성 수지 |
| KR101949454B1 (ko) | 2015-06-15 | 2019-02-18 | 주식회사 엘지화학 | 고흡수성 수지 |
| KR101918285B1 (ko) * | 2015-06-17 | 2018-11-13 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
| KR101949995B1 (ko) | 2015-07-06 | 2019-02-19 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 및 이로부터 제조된 고흡수성 수지 |
| KR101855351B1 (ko) | 2015-08-13 | 2018-05-04 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
| KR101949996B1 (ko) * | 2016-01-28 | 2019-02-19 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
| WO2017146347A1 (ko) | 2016-02-25 | 2017-08-31 | 주식회사 엘지화학 | 고흡수성 수지 및 이의 제조 방법 |
| KR101958014B1 (ko) | 2016-03-14 | 2019-03-13 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
| JP6682617B2 (ja) * | 2016-03-28 | 2020-04-15 | 株式会社日本触媒 | 吸水剤およびその製造方法、並びに吸水剤を用いた吸収性物品 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1104782A (en) * | 1976-06-07 | 1981-07-14 | Robert E. Erickson | Absorbent films and laminates |
| US4410571A (en) * | 1980-08-25 | 1983-10-18 | Johnson & Johnson | Absorbent products, process and compositions for immobilization of particulate absorbents |
| US4552938A (en) * | 1981-10-26 | 1985-11-12 | American Colloid Company | Process for preparing dry solid water absorbing polyacrylate resin |
| US4394184A (en) * | 1982-03-26 | 1983-07-19 | Pennwalt Corporation | Determination of grain refiners in phosphate conversion coating baths |
| US4529739A (en) * | 1984-07-24 | 1985-07-16 | The Dow Chemical Company | Foamed polymeric materials |
| US4654039A (en) * | 1985-06-18 | 1987-03-31 | The Proctor & Gamble Company | Hydrogel-forming polymer compositions for use in absorbent structures |
| USRE32649E (en) * | 1985-06-18 | 1988-04-19 | The Procter & Gamble Company | Hydrogel-forming polymer compositions for use in absorbent structures |
| CA1279437C (en) * | 1985-06-24 | 1991-01-22 | William Alexander | Continuous method for preparing polyacrylate resins |
| US4742086A (en) * | 1985-11-02 | 1988-05-03 | Lion Corporation | Process for manufacturing porous polymer |
| DE3613207A1 (de) * | 1986-04-18 | 1987-10-22 | Akzo Gmbh | Mit wasser quellbare zusammensetzung, ihre herstellung und verwendung |
| US4808637A (en) * | 1987-05-14 | 1989-02-28 | Johnson & Johnson Patient Care, Inc. | Superabsorbent composition and process |
| US4826881A (en) * | 1987-09-08 | 1989-05-02 | C-I-L Inc. | Vesiculated polymer granules |
| CA1321062C (en) * | 1988-04-21 | 1993-08-10 | Stanley Roy Kellenberger | Absorbent products containing hydrogels with ability to swell against pressure |
| AT391321B (de) * | 1988-08-29 | 1990-09-25 | Chemie Linz Gmbh | Verfahren zur herstellung von fluessigkeitsabsorbierenden acrylharzen |
-
1991
- 1991-10-22 US US07/781,526 patent/US5118719A/en not_active Expired - Lifetime
-
1992
- 1992-05-13 TW TW081103706A patent/TW221449B/zh not_active IP Right Cessation
- 1992-06-10 EP EP92305327A patent/EP0538983B1/en not_active Expired - Lifetime
- 1992-06-10 DE DE69230964T patent/DE69230964T2/de not_active Expired - Lifetime
- 1992-08-06 JP JP21027492A patent/JP3280077B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0538983A1 (en) | 1993-04-28 |
| JP3280077B2 (ja) | 2002-04-30 |
| US5118719A (en) | 1992-06-02 |
| JPH05237378A (ja) | 1993-09-17 |
| DE69230964D1 (de) | 2000-05-31 |
| TW221449B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1994-03-01 |
| EP0538983B1 (en) | 2000-04-26 |
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| 8364 | No opposition during term of opposition | ||
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