EP1456468B1 - Composition aqueuse contenant de la silice et procede de production de papier - Google Patents
Composition aqueuse contenant de la silice et procede de production de papier Download PDFInfo
- Publication number
- EP1456468B1 EP1456468B1 EP02793740A EP02793740A EP1456468B1 EP 1456468 B1 EP1456468 B1 EP 1456468B1 EP 02793740 A EP02793740 A EP 02793740A EP 02793740 A EP02793740 A EP 02793740A EP 1456468 B1 EP1456468 B1 EP 1456468B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silica
- containing composition
- anionic
- aqueous
- based particles
- 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 291
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 140
- 239000000203 mixture Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 125000000129 anionic group Chemical group 0.000 claims abstract description 97
- 239000002245 particle Substances 0.000 claims abstract description 68
- 229920000620 organic polymer Polymers 0.000 claims abstract description 45
- 125000003118 aryl group Chemical group 0.000 claims abstract description 41
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 238000004513 sizing Methods 0.000 claims abstract description 19
- 239000000725 suspension Substances 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 229920000642 polymer Polymers 0.000 claims description 32
- 125000002091 cationic group Chemical group 0.000 claims description 29
- 229920002635 polyurethane Polymers 0.000 claims description 26
- 239000004814 polyurethane Substances 0.000 claims description 26
- 229910052681 coesite Inorganic materials 0.000 claims description 13
- 229910052906 cristobalite Inorganic materials 0.000 claims description 13
- 229910052682 stishovite Inorganic materials 0.000 claims description 13
- 229910052905 tridymite Inorganic materials 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 229920002472 Starch Polymers 0.000 claims description 10
- 235000019698 starch Nutrition 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 6
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 5
- 239000008107 starch Substances 0.000 claims description 5
- 239000008394 flocculating agent Substances 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 abstract description 20
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 abstract description 5
- 239000007900 aqueous suspension Substances 0.000 abstract description 3
- 239000000123 paper Substances 0.000 description 23
- 238000007792 addition Methods 0.000 description 19
- -1 aluminium modified silica particles Chemical class 0.000 description 16
- 229920006318 anionic polymer Polymers 0.000 description 14
- 229920001732 Lignosulfonate Polymers 0.000 description 10
- 239000004117 Lignosulphonate Substances 0.000 description 10
- 235000019357 lignosulphonate Nutrition 0.000 description 10
- 229920006317 cationic polymer Polymers 0.000 description 9
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 description 8
- 239000008119 colloidal silica Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 125000001165 hydrophobic group Chemical group 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 229940075507 glyceryl monostearate Drugs 0.000 description 4
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 description 4
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 150000001399 aluminium compounds Chemical class 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 238000006243 chemical reaction Methods 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
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 125000005442 diisocyanate group Chemical group 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 229920005611 kraft lignin Polymers 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 2
- GFVJWUVFVLFWNG-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;terephthalic acid Chemical compound CCC(CO)(CO)CO.OC(=O)C1=CC=C(C(O)=O)C=C1 GFVJWUVFVLFWNG-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 244000303965 Cyamopsis psoralioides Species 0.000 description 2
- 101000609947 Homo sapiens Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit alpha Proteins 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 102100039177 Rod cGMP-specific 3',5'-cyclic phosphodiesterase subunit alpha Human genes 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Chemical compound [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 229940077746 antacid containing aluminium compound Drugs 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 150000001491 aromatic compounds Chemical class 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 150000001767 cationic compounds Chemical class 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000000502 dialysis Methods 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 125000001624 naphthyl group Chemical group 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 229920001977 poly(N,N-diethylacrylamides) Polymers 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- VCWHRHVZWITKNJ-UHFFFAOYSA-N propane-1,2,3-triol;terephthalic acid Chemical compound OCC(O)CO.OC(=O)C1=CC=C(C(O)=O)C=C1 VCWHRHVZWITKNJ-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000011122 softwood Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
- 229920005613 synthetic organic polymer Polymers 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 1
- AJTVSSFTXWNIRG-UHFFFAOYSA-N 2-[bis(2-hydroxyethyl)amino]ethanesulfonic acid Chemical compound OCC[NH+](CCO)CCS([O-])(=O)=O AJTVSSFTXWNIRG-UHFFFAOYSA-N 0.000 description 1
- OJPDDQSCZGTACX-UHFFFAOYSA-N 2-[n-(2-hydroxyethyl)anilino]ethanol Chemical compound OCCN(CCO)C1=CC=CC=C1 OJPDDQSCZGTACX-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- WEHZNZTWKUYVIY-UHFFFAOYSA-N 3-oxabicyclo[3.2.2]nona-1(7),5,8-triene-2,4-dione Chemical compound O=C1OC(=O)C2=CC=C1C=C2 WEHZNZTWKUYVIY-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- RNIHAPSVIGPAFF-UHFFFAOYSA-N Acrylamide-acrylic acid resin Chemical compound NC(=O)C=C.OC(=O)C=C RNIHAPSVIGPAFF-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001503 Glucan Polymers 0.000 description 1
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 240000003183 Manihot esculenta Species 0.000 description 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 1
- 229920000057 Mannan Polymers 0.000 description 1
- FSVCELGFZIQNCK-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)glycine Chemical compound OCCN(CCO)CC(O)=O FSVCELGFZIQNCK-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000218657 Picea Species 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 229910007266 Si2O Inorganic materials 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 244000098338 Triticum aestivum Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 150000001449 anionic compounds Chemical class 0.000 description 1
- 229920006320 anionic starch Polymers 0.000 description 1
- 229940027987 antiseptic and disinfectant phenol and derivative Drugs 0.000 description 1
- 159000000032 aromatic acids Chemical class 0.000 description 1
- 238000007080 aromatic substitution reaction Methods 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- AAZVLNHLLNLZEE-UHFFFAOYSA-M benzyl-(3-chloro-2-hydroxypropyl)-dimethylazanium;chloride Chemical compound [Cl-].ClCC(O)C[N+](C)(C)CC1=CC=CC=C1 AAZVLNHLLNLZEE-UHFFFAOYSA-M 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- KQVMFSLMVJQXKC-UHFFFAOYSA-N butanedioic acid;2-ethyl-2-(hydroxymethyl)propane-1,3-diol Chemical compound OC(=O)CCC(O)=O.CCC(CO)(CO)CO KQVMFSLMVJQXKC-UHFFFAOYSA-N 0.000 description 1
- WKZFQFQFYZJKPR-UHFFFAOYSA-N butanedioic acid;propane-1,2,3-triol Chemical compound OCC(O)CO.OC(=O)CCC(O)=O WKZFQFQFYZJKPR-UHFFFAOYSA-N 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 235000009973 maize Nutrition 0.000 description 1
- LUEWUZLMQUOBSB-GFVSVBBRSA-N mannan Chemical class O[C@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O[C@@H](O[C@H]3[C@H](O[C@@H](O)[C@@H](O)[C@H]3O)CO)[C@@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-GFVSVBBRSA-N 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 239000011234 nano-particulate material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000002989 phenols Chemical group 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 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
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- 229920000962 poly(amidoamine) Polymers 0.000 description 1
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001592 potato starch Polymers 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
- 229940113165 trimethylolpropane Drugs 0.000 description 1
- 150000004072 triols Chemical class 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
Definitions
- the present invention relates to an aqueous silica-containing composition comprising an anionic organic polymer having at least one aromatic group and anionic silica-based particles.
- the invention further relates to a method for the preparation of the aqueous silica-containing composition, uses of the aqueous silica-containing composition and a papermaking process.
- an aqueous suspension containing cellulosic fibres, and optionally fillers and additives, referred to as stock is fed into a headbox which ejects the stock onto a forming wire. Water is drained from the stock through the forming wire so that a wet web of paper is formed on the wire. The formed paper web is dewatered and dried in the drying section of the paper machine. Drainage and retention aids are conventionally introduced into the stock in order to facilitate drainage and to increase adsorption of fine particles onto the cellulosic fibres in such a way that the fine particles are "retrained with the fibres on the wire.
- US 4,388,150 discloses a binder in papermaking comprising a complex of cationic starch and colloidal silicic acid to produce a paper having increased strength and improved levels of retention of added minerals and papermaking fines.
- US 4,750,974 discloses a coarcervate binder for use in papermaking comprising a tertiary combination of a cationic starch, an anionic high molecular weight polymer and a dispersed silica.
- US 5,368,833 discloses silica sols containing aluminium modified silica particles with high specific surface area and a high content of microgel.
- US 5,567,277 discloses a composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer and an anionic polymer comprising modified lignin.
- EP 0 418 015 A1 discloses an active sizing composition containing an aqueous emulsion in combination with an anionic dispersant or emulsifier.
- anionic polyacrylamide, anionic starch or colloidal silica the anionic charge density in the sizing composition can be extended.
- US 5,670,021 refers to a process for the production of paper by forming and dewatering a suspension of cellulose, wherein the dewatering takes place in the presence of an alkali metal silicate and a phenolic resin added at the same point into the suspension.
- US 6,033,524 discloses a method for Increasing retention and drainage of filling components in a paper making furnish in a paper making process comprising adding to the furnish a slurry of filling components, also containing a phenolic enhancer.
- US 6,315,824 pertains to a dispersed composition comprising a hydrophobic phase and an aqueous phase, the composition being stabilised by a cationic colloidal coacervate stabilising agent, the coacervate stabilising agent comprising an anionic component and a cationic component.
- EP 0,953,680 A1 refers to a process for the production of paper from s suspension comprising adding to the suspension a cationic organic polymer.
- US 5,185,062 discloses a papermaking process including the steps of adding to the papermaking slurry a high molecular weight cationic polymer and then a medium molecular weight anionic polymer.
- US 4,313,790 refers to a process for the production of paper which consists of the addition to the papermaking furnish of kraft lignin or modified kraft lignin and poly(oxyethylene).
- US 6.165,259 relates to an aqueous dispersion containing a dispersant and a disperse phase containing a hydrophobic material, the dispersant comprising an anionic compound and a cationic compound.
- an improved drainage and/or retention effect of a cellulosic suspension on a wire can be obtained by using an aqueous silica-containing composition comprising at least one anionic organic polymer with at least one aromatic group which is a polyurethane and anionic aggregated or microgel formed silica-based particles.
- the aqueous silica-containing composition is useful in processes for production of paper from all types of stocks, in particular stocks having high contents of salts (high conductivity) and colloidal substances.
- the aqueous silica-containing composition is also useful in papermaking processes with a high degree of white water closure, i.e. extensive white water recycling and limited fresh water supply.
- the present invention makes it possible to increase the speed of the paper machine and to use a lower dosage of additives to give a corresponding drainage and/or retention effect, thereby leading to an improved papermaking process and economic benefits.
- drainage and retention aid refer to one or more components, which when added to an aqueous cellulosic suspension, give better drainage and/or retention than is obtained when not adding the said one or more components. All types of stocks, in particular stocks having high contents of salts (high conductivity) and colloidal substances will obtain better drainage and retention performances by the addition of the composition according to the present invention. This is important in papermaking processes with a high degree of white water closure, i.e. extensive white water recycling and limited fresh water supply.
- an aqueous silica-containing composition comprising an anionic organic polymer having at least one aromatic group which is a polyurethane and anionic silica-based particles comprising aggregated or microgel formed silica-based particles.
- the aqueous silica-containing composition contains the anionic organic polymer having at least one aromatic group and the anionic silica-based particles, calculated as SiO 2 , in an amount of at least 0.01 % by weight based on the total weight of the aqueous silica-containing composition.
- the composition contains substantially no cellulose-reactive sizing agent.
- an aqueous silica-oontaining composition obtainable by mixing an anionic organic polymer having at least one aromatic group which is a polyurethane with an aqueous alkali stabilised silica-based sol having an S-value in the range of from about 5 up to about 50% containing-anionic aggregated or microgel formed sillca-based particles .
- the obtained aqueous siiica-containing composition contains the anionic organic polymer having at least one aromatic group and the silica-based particles, calculated as SiO 2 , in an amount of at least 0.01 % by weight based on the total weight of the aqueous silica-containing composition.
- the composition contains substantially no cellulose-reactive sizing agent and that said anionic organic polymer is not anionic naphthalene sulphonate formaldehyde condensate.
- a method for preparation of an aqueous silica-containing composition which comprises mixing in the presence of substantially no cellulose-reactive sizing agent an anionic organic polymer having at least one aromatic group which is a polyurethane with silica-based particles comprising anionic aggregated or microgel formed silica-based paricles to provide an aqueous silica-containing composition containing the anionic organic polymer having at least one aromatic group and the silica-based particles, calculated as SiO 2 , in an amount of at least 0.01 % by weight, based on the total weight of the aqueous silica-containing composition with the proviso that the anionic organic polymer having at least one aromatic group is not an anionic naphthalene sulphonate formaldehyde condensate.
- an aqueous silica-containing composition which comprises mixing an anionic organic polymer having at least one aromatic group being a polyurethane and a charge density of at least 0.1 meq/g of dry polymer, with silica-based particles comprisng anionic aggregated or microgel formed to provide an aqueous silica-containing composition containing the anionic organic polymer having at least one aromatic group and the silica-based particles, calculated as SiO 2 , in an amount of at least 0.01 % by weight, based on the total weight of the aqueous silica-containing composition, with the proviso that the anionic organic polymer having at least one aromatic group is not an anionic naphthalene sulphonate formaldehyde condensate.
- an aqueous silica-containing composition which comprises desalinating an aqueous solution of an anionic organic polymer having at least one aromatic group, being a polyurethane mixing in the desalinated anionic organic polymer having at least one aromatic group with silica-based particles comprisng anionic aggregated or microgel formed siluca-based particles to provide an aqueous silica-containing composition containing the anionic organic polymer having at least one aromatic group and the aggregated or microgel formed silica-based particles, calculated as SiO 2 , in an amount of at least 0.01 % by weight, based on the total weight of the aqueous silica-containing composition with the proviso that the anionic organic polymer having at least one aromatic group is not an anionic naphthalene sulphonate formaldehyde condensate.
- the invention further relates to the use of the aqueous silica-containing composition of the invention, as flocculating agent In combination with at least one cationic organic polymer in the production of pulp and paper and for water purification.
- a process for the production of paper from a suspension containing cellulosic fibres, and optionally fillers comprising adding to the suspension at least one cationic organic polymer and an aqueous silica-containing composition according to the invention.
- the aqueous silica-containing composition comprises at least one anionic organic polymer with at least one aromatic group, being a polyurethane.
- the aromatic group of the anionic polymer can be present in the polymer backbone or in a substituent group that is attached to the polymer backbone (main chain).
- suitable aromatic groups include aryl, aralkyl and alkaryl groups and derivatives thereof, e.g. phenyl, tolyl, naphthyl, phenylene, xylylene, benzyl, phenylethyl and derivatives of these groups.
- the anionically charged groups can be present either In the anionic polymer or in the monomers used for preparing the anionic polymer.
- the anionically charged groups can either be groups carrying an anionic charge or acid groups carrying an anionic charge when dissolved or dispersed in water. These groups are herein collectively being referred to as anionic groups, such as phosphate, phosphonate, sulphate, sulphonic acid, sulphonate, carboxylic acid, carboxylate, alkoxide and phenolic groups, i.e. hydroxy-substituted phenols and naphthyls. Groups carrying an anionic charge are usually salts of an alkali, alkaline earth metals or ammonia.
- Anionic polymers containing one or more aromatic groups being polyurethanes according to the invention can suitably be selected from the group consisting of step-growth polymers,
- step-growth polymer refers to a polymer obtained by step-growth polymerisation, also being referred to as step-reaction polymer and step-reaction polymerisation, respectively.
- the anionic polymer is a step-growth polymer being a polyurethane.
- the anionic polymers according to the invention can be linear, branched or cross-linked. Preferably the anionic polymer is water-soluhle or water-dispersible.
- suitable anionic step-growth polymers include condensation polymers, i.e. polymers obtained by step-growth condensation polymerisation, e.g. condensates of an aldehyde such as formaldehyde with one or more aromatic compounds containing one or more anionic groups, and optional other comonomers useful in the condensation polymerisation such as urea and melamine.
- suitable aromatic compounds containing anionic groups comprises compounds containing anionic groups such as phenolic compounds, e.g. phenol, resorcinol and derivatives thereof, aromatic acids and salts thereof.
- suitable anionic step-growth polymers include addition polymers, i.e. polymers obtained by step-growth addition polymerisation, e.g. anionic polyurethanes prepared from a monomer mixture comprising aromatic isocyanates and/or aromatic alcohols.
- suitable aromatic isocyanates include diisocyanates, e.g. toluene-2,4- and 2.6-diisocyanates and diphenylmethane-4,4'-diisocyanate.
- suitable aromatic alcohols include dihydric alcohols, i.e. diols, e.g.
- the monomer mixture can also contain non-aromatic isocyanates and/or alcohols, usually diisocyanates and diols, for example any of those known to be useful in the preparation of polyurethanes.
- suitable monomers containing anionic groups include the monoester reaction products of triols, e.g. trimethylolethane, tri-methylolpropane and glycerol, with dicarboxylic acids or anhydrides thereof, e.g.
- succinic acid and anhydride terephthalic acid and anhydride, such as glycerol monosuccinate, glycerol monoterephthalate, trimethylolpropane monosuccinate, trimethylolpropane monoterephthalate, N,N-bis-(hydroxyethyl)-glycine, di-(hydroxymethyl)proptonic acid, N,N-bis-(hydroxyethyl)-2-aminoethanesulfonic acid, and the like, optionally and usually in combination with reaction with a base, such as alkali and alkaline earth metal hydroxides, e.g. sodium hydroxide, ammonia or an amine, e.g. triethylamine, thereby forming an alkali, alkaline earth metals or ammonium counter-ion.
- a base such as alkali and alkaline earth metal hydroxides, e.g. sodium hydroxide, ammonia or an amine, e.g. trie
- the weight average molecular weight of the anionic polymer can vary within wide limits dependent on, inter alia, the type of polymer used, and usually it is at least about 500, suitably above about 800 and preferably above about 1,000.
- the upper limit is not critical; It can be about 10,000,000, usually 1,000,000, suitably 500,000, preferably 200,000 and most preferably 100,000.
- the anionic polymer can have a degree of anionic substitution (DS A ) varying over a wide range dependent on, Inter alia, the type of polymer used.
- DS A is usually from 0.01 to 2.0, suitably from 0.02 to 1.8 and preferably from 0.025 to 1.5; and the degree of aromatic substitution (DS Q ) can be from 0.001 to 1.0, usually from 0.01 to 0.8, suitably from 0.02 to 0.7 and preferably from 0.025 to 0.5.
- the degree of cationic substitution (DS c ) can be, for example, from 0 to 0.2, suitably from 0 to 0.1 and preferably from 0 to 0.05, the anionic polymer having an overall anionic charge.
- the anionic charge of the anionic polymer is within the range of from 0.1 to 10.0 meq/g of dry polymer, suitably from 0.2 to 6.0 meq/g, and preferably from 0.5 to 4.0 meq/g.
- the aqueous silica-containing composition according to the invention also comprises anionic aggregated or microgel formed silica-based particles i.e. particles based on SiO 2 , preferably formed by polymerising silicic acid, encompassing both homopolymers and copolymers.
- silica-based particles can be modified and contain other elements, e.g. amine, aluminium and/or boron, which can be present in the aqueous phase and/or in the silica-based particles.
- suitable aggregated or microgel formed silica-based particles include colloidal silica, colloidal aluminium-modified silica or aluminium silicate, and different types of polysilicic acid and mixtures thereof, either alone or in combination with other types of anionic silica-based particles.
- polysilicic acid is also referred to was polymeric silicic acid, polysilicic acid microgel, polysilicate and polysilicate microgel, which are all encompassed by the term polysilicic acid used herein.
- Aluminium-containing compounds of this type are commonly referred to as polyaluminosilicate and polyaluminosilicate microgel including colloidal aluminium-modified silica and aluminium silicate.
- the anionic silica-based particles are in the colloidal range of particle size. This state comprises particles sufficiently small not to be affected by-gravitational forces but sufficiently large not to show marked deviation from the properties of typical solutions, i.e. average particle size significantly less than 1 ⁇ m.
- the anionic silica-based particles have an average particle size suitably below about 50 nm, preferably below about 20 nm and more preferably in the range of from about 1 to about 50 nm, most preferably from about 1 up to about 10 nm.
- the particle size refers to the average size of the primary particles, which may be aggregated or non-aggregated.
- the silica-based particles present in the aqueous silica-containing composition of the invention comprise aggregated or microgel formed silica-based particles, optionally and usually in combination with non-aggregated, or monodisperse, silica-based particles.
- the silica-based particles have a specific surface area larger than 50 m 2 /g, preferably larger than 100 m 2 /g.
- the specific area can be up to 1700 m 2 /g, preferably up to 1300 m 2 /g and usually in the range from 300 to 1300 m 2 /g, preferably from 500 to 1050 m 2 /g.
- the specific surface area can be measured by means of titration with NaOH according to the method described by Sears, Analytical Chemistry 28(1956), 12, 1981-1983 or in U.S. Patent No. 5,176,891 .
- the given area thus represents the average specific surface area of the particles.
- the total weight of the anionic organic polymer having at least one aromatic group and anionic silica-based particles, calculated as SiO 2 , contained in the aqueous silica-containing composition is at least 0.01% by weight, calculated on the total weight of the aqueous silica-containing composition, preferably at least 0.05 % by weight, more preferably at least 0.1 % by weight.
- concentration of the anionic organic polymer having at least one aromatic group and the anionic silica-based particles, calculated as SiO 2 is within the range of 1 to 45% by weight, preferably within the range of 2 to 35 % by weight, most preferably 5 to 30% by weight.
- the aqueous silica-containing composition can have an anionic charge density of at least 0.1 meq/g, usually the charge is within the range of from 0.1 to 10 meq/g, suitably within the range of from 0.1 to 8 meq/g, preferably within the range of from 0.1 to 6 meq/g, and most preferably within the range of from 0.2 to 4 meq/g.
- the aqueous silica-containing composition according to the invention contains substantially no cellulose-reactive sizing agent.
- substantially no means that less than or equal to 10% by weight, suitably less than 5%, preferably less than 1% by weight of cellulose-reactive sizing agent is present in the aqueous silica-containing composition.
- the aqueous silica-containing composition according to the invention contains substantially no sizing agent, suitably, contains no sizing agent.
- the present invention relates further to a method for preparation of an aqueous silica-containing composition.
- the two components are preferably stirred together.
- the anionic organic polymer having at least one aromatic group can be added to an aqueous sol containing the silica-based particles or the silica-based particles can be added to an aqueous solution of anionic organic polymer having at least one aromatic group.
- the aqueous solution of anionic organic polymer having at least one aromatic group may be desalinated or deionisated. The desalination or deionisation can be carried out with dialysis, membrane filtration, ultrafiltration, reversed osmosis or ion exchange or the like.
- the desalination or deionisation is carried out by the use of ultra-filtration or dialysis.
- the pH of an aqueous solution of anionic organic polymer may be adjusted to the pH of the silica-based particles, prior to or after mixing the aqueous solution with the silica-based particles.
- the pH can be adjusted to at least pH 8.0, suitably at least 9.0, preferably at least 9.5, preferably within the range of 9.0 to 11.0.
- the anionic organic polymer having at least one aromatic group to be mixed with the silica-based particles can have an anionic charge density of at least 0.1 meq/g, usually within the range of from 0.1 to 10.0 meq/g of dry polymer, suitably within the range of from 0.2 to 6.0 and preferably within the range of from 0.5 to 4.0.
- the silica-based particles, preferably anionic, to be mixed with the anionic organic polymer can have the previous mentioned properties.
- the silica-based particles are contained in a sol.
- the sol may have an S-value in the range of from 5 to 80%, suitably from 5 to 50%, preferably from 8 to 45%, and most preferably from 10 to 30%. Calculation and measuring of the S-value can be performed as described by Iler & Dalton in J. Phys. Chem. 60(1956), 955-957 .
- the S-value indicates the degree of aggregate or microgel formation and a lower S-value is indicative of a higher degree of aggregation.
- the silica-based particles comprise aggregated or microgel formed silica-based particles, optionally and usually in combination with non-aggregated, or monodispers, silica-based particles.
- the silica-based particles have a molar ratio Si 2 O:Na 2 O less than 60, usually within the range 5 to 60, and preferably within the range from 8 to 55.
- the aqueous silica-containing composition obtained by any of the methods according to the invention contains suitably a total weight of the anionic organic polymer having at least one aromatic group and anionic silica-based of at least 0.01% by weight, calculated on the total weight of the aqueous silica-containing composition, preferably at least 0.05 % by weight, more preferably at least 0.1 % by weight.
- concentration of anionic organic polymer having at least one aromatic group and anionic silica-based particles is within the range of 1 to 45% by weight, preferably within the range of 2 to 35 % by weight, most preferably 5 to 30% by weight.
- the products prepared by any of these methods shows improved drainage and retention properties, and also a better storage stability and therefore a better drainage and retention aid performance when stored because it has a longer shelf life.
- the mixing procedure of above mention methods is suitably carried out in the presence of substantially no cellulose-reactive sizing agent.
- substantially no means that less or equal to 10% by weight, suitably less than 5%, preferably less than 1% by weight of cellulose-reactive sizing agent is present. Most preferably there is no cellulose-reactive sizing agent present.
- the mixing procedure may also be carried out in the presence of substantially no sizing agent, or in the presence of no sizing agent.
- the present invention further relates to a process for the production of paper from an aqueous suspension containing cellulosic fibres.
- the process comprises adding to the suspension a cationic organic polymer and the aqueous silica-containing composition of the invention.
- the cationic organic polymer according to the invention can be linear, branched or cross-linked.
- the cationic polymer is water-soluble or water-dispersible.
- Suitable cationic polymers include synthetic organic polymers, e.g. step-growth polymers and chain-growth polymers, and polymers derived from natural sources, e.g. polysaccharides.
- Suitable cationic synthetic organic polymers include vinyl addition polymers such as acrylate- and acrylamide-based polymers, as well as cationic poly(diallyl dimethyl ammonium chloride), cationic polyethylene imines, cationic polyamines, polyamidoamines and vinylamide-based polymers, melamine-formaldehyde and urea-formaldehyde resins.
- suitable polysaccharides include starches, guar gums, cellulose derivatives, chitins, chitosans, glycans, galactans, glucans, xanthan gums, pectins, mannans, dextrins, preferably starches and guar gums.
- suitable starches include potato, corn, wheat, tapioca, rice, waxy maize, barley, etc.
- Cationic starches and cationic acrylamide-based polymers are preferred polymers according to the invention, and they can be used singly, together with each other or together with other polymers, particularly preferred are cationic starches and cationic acrylamide-based polymers having at least one aromatic group.
- the cationic organic polymers can have one or more hydrophobic groups attached to them.
- the hydrophobic groups can be aromatic groups, groups comprising aromatic groups or non-aromatic groups, preferably the hydrophobic groups comprise aromatic groups.
- the hydrophobic group can be attached to a heteroatom, e.g. nitrogen or oxygen, the nitrogen optionally being charged, which heteroatom, it can be attached to the polymer backbone, for example via a chain of atoms.
- the hydrophobic group may have at least 2 and usually at least 3 carbon atoms, suitably from 3 to 12 and preferably from 4 to 8 carbon atoms.
- the hydrophobic group is suitably a hydrocarbon chain.
- Suitable dosages counted as dry substance based on dry pulp and optional filler, of the cationic polymer in the system is from 0.01 to 50 kg/t (kg/tonne, "metric ton") of, preferably from 0.1 to 30 kg/t and most preferably from 1 to 15 kg/t.
- Suitable dosages counted as dry substances based on dry pulp and optional filler, of the aqueous silica-containing composition defined above in the system are from 0.01 to 15 kg/t, preferably from 0.01 to 10 kg/t calculated as an anionic organic polymer having at least one aromatic group and anionic silica-based particles, and most preferably from 0.05 to 5 kg/t.
- Suitable mineral fillers of conventional types may be added to the aqueous cellulosic suspension according to the invention.
- suitable fillers include kaolin, china clay, titanium dioxide, gypsum, talc and natural and synthetic calcium carbonates such as chalk, ground marble and precipitated calcium carbonate (PCC).
- Such aluminium compounds include alum, aluminates, aluminium chloride, aluminium nitrate, and polyaluminium compounds, such as polyaluminium chlorides, polyaluminium sulphates, polyaluminium compounds containing chloride and/or sulphate ions, polyaluminium silicate sulphates, and mixtures thereof.
- the polyaluminium compounds may also contain other anions than chloride ions, for example anions from sulfuric acid, phosphoric acid, or organic acids such as citric acid and oxalic acid.
- an aluminium compound in the present process it is usually preferably to add it to the stock prior to the polymer component and micro- or nano-particulate material.
- Suitable addition levels of aluminium containing compounds is at least 0.001 kg/t, preferably from 0.01 to5 kg/t and more preferably from 0.05 to 1 kg/t, calculated as Al 2 O 3 based on dry pulp and optional filler.
- anionic trash catchers examples include cationic polyamines, polymers or copolymers of quaternary amines, or aluminum containing compounds.
- the process of this invention is used for the production of paper.
- paper include not only paper and the production thereof, but also other web-like products, such as for example board and paperboard, and the production thereof.
- the invention is particularly useful in the manufacture of paper having grammages below 150 g/m 2 , preferably below 100 g/m 2 , for example fine paper, newspaper, light weight coated paper, super calendered paper and tissue.
- the process can be used in the production of paper from all types of stocks, both wood containing and woodfree.
- the different types of suspensions of cellulose-containing fibres and the suspensions should suitably contain at least 25% by weight and preferably at least 50% of weight of such fibres, based on dry substance.
- the suspensions comprise fibres from chemical pulp such as sulphate, sulphite and organosolv pulps wood-containing or mechanical pulp such as thermomechanical pulp, chemo-thermomechanical pulp, refiner pulp and groundwood pulp, from both hardwood and softwood, and can also be based on recycled fibres, optionally from de-inked pulps, and mixtures thereof.
- the stock is a wood containing stock, which have high contents of salts (high conductivity).
- the chemicals according to the present invention can be added to the aqueous cellulosic suspension, or stock, in conventional manner and in any order. It is usually preferably to add the cationic polymer to the stock before adding the aqueous silica-containing composition, even if the opposite order of addition may be used. It is further preferred to add the cationic polymer before a shear stage, which can be selected from pumping, mixing, cleaning, etc., and to add the aqueous silica-containing composition after that shear stage.
- the aqueous silica-containing composition can be used as a flocculation agent in the treatment of water for the production of drinking water or as an environmental treatment of waters for instance in lakes.
- the composition can also be used as flocculation agent in the treatment of wastewater or waste sludges.
- Parts and % relate to parts by weight and % by weight, respectively, and all solutions are aqueous, unless otherwise stated.
- the units are metric.
- Retention performance was evaluated by means of a nephelometer by measuring the turbidity of the filtrate, the white water, obtained by draining the stock.
- the trurbidity was measure in NTU (Nephelometric Turbidity Units).
- test stock was wood containing with a pH 7.2, the conductivity of the stock was 5.0 mS/cm, and the consistency was 1.42 g/l.
- the stock was stirred in a baffled jar at a speed of 1500 rpm throughout the test.
- a cationic polymer was added to the stock before the aqueous compositions according to the invention or the anionic reference.
- the cationic polymer was a cationic starch (C1) obtained by quarternisation of native potato starch with 3-chloro-2-hydroxypropyl dimethyl benzyl ammonium chloride to 0.5% N was added followed by 45 seconds of stirring, and then the anionic aqueous composition was added, followed by 15 seconds stirring before drainage.
- Aqueous compositions according to the invention containing anionic polyurethane and colloidal silica were measured to evaluate their drainage and retention performance. All samples were diluted to 0.5% of solids before the evaluation of drainage properties.
- the anionic polyurethane (P1) is based on an anionic polyurethane of 15% solids, produced from glyceryl monostearate (GMS) and toluolyl diisocyanate (TDI), which forms a pre-polymer, which is reacted with dimethylol propionic acid (DMPA), with 30 mol% of GMS is replaced by DPMA N-methyl diethanol amine (N-MDEA).
- the colloidal silica sol (S1) is of the type described in US 5,447,604 having a molar ratio SiO 2 :Na 2 O of 10, specific surface area of 870 m 2 /g, S-value of 35% and silica content of 10.0% by weight.
- the drainage time measured on the stock with addition of 20 kg/t of C1 was 29 seconds and the turbidity was measured to 44 NTU. All additions are calculated as dry on dry stock.
- the drainage times derived from the different additions to the stock of the aqueous composition of the invention are summarised in Table 1.
- anionic polyurethane (P2) based on an anionic polyurethane of 19% solids produced from TDI and phenyl diethanoi amine PDEA, which forms the pre-polymer, which is reacted with a mixture of DMPA and N-MDEA and of which 30 mol% of PDEA is replaced by
- the anionic polyurethane used in this example was an anionic polyurethane (P3) of 15% solids, produced from GMS and TDI, which forms a pre-polymer, which is reacted DMPA and the colloidal silica (S3) described in US 5,368,833 was a silica sol having a molar ratio SiO 2 :Na 2 O of 45, specific surface area of 850 m 2 /g, S-value of 20% and a silica content of 8.0%, and was modified with aluminium to 0.3% Al 2 O 3 .
- P3 anionic polyurethane
- S3 colloidal silica
- LS1 anionic lignosulphonate
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Silicon Compounds (AREA)
Claims (20)
- Composition aqueuse contenant de la silice comprenant un polymère organique anionique comportant au moins un groupe aromatique qui est un poly(uréthane) et des particules anioniques à base de silice comprenant des particules à base de silice agrégées ou formées de microgel, la composition aqueuse contenant de la silice contenant le poly(uréthane) et les particules anioniques à base de silice, calculée en tant que SiO2, dans une quantité d'au moins 0,01 % en poids par rapport au poids total de la composition aqueuse contenant de la silice, où la composition contient une quantité inférieure ou égale à 10 % en poids de colle réactive envers la cellulose.
- Composition aqueuse contenant de la silice selon la revendication 1, dans laquelle les particules à base de silice ont une surface spécifique dans la plage de 300 à 1 300 m2/g.
- Composition aqueuse contenant de la silice selon l'une quelconque des revendications 1 à 2, dans laquelle les particules à base de silice ont une taille moyenne de particule variant d'environ 1 nm jusqu'à environ 50 nm.
- Composition aqueuse contenant de la silice selon l'une quelconque des revendications 1 à 3, dans laquelle les particules à base de silice ont une taille moyenne de particule variant d'environ 1 nm jusqu'à environ 10 nm.
- Composition aqueuse contenant de la silice selon l'une quelconque des revendications 1 à 4, dans laquelle la composition aqueuse contenant de la silice a une densité de charges négatives dans la plage de 0,1 à 6 meq/g.
- Composition aqueuse contenant de la silice selon l'une quelconque des revendications 1 à 5, dans laquelle la composition ne contient aucune colle.
- Procédé de préparation d'une composition aqueuse contenant de la silice qui comprend le mélange, en présence d'une quantité inférieure ou égale à 10 % en poids d'une colle réactive envers la cellulose, d'un polymère organique anionique comportant au moins un groupe aromatique qui est un poly(uréthane) avec des particules à base de silice comprenant des particules anioniques à base de silice agrégées ou formées de microgel pour former une composition aqueuse contenant de la silice contenant le poly(uréthane) et les particules à base de silice, calculée en tant que SiO2, dans une quantité d'au moins 0,01 % en poids, par rapport au poids total de la composition aqueuse contenant de la silice.
- Procédé selon la revendication 7, dans lequel le poly(uréthane) a une densité de charges d'au moins 0,1 meq/g de polymère sec.
- Procédé selon l'une quelconque des revendications 7 à 8, dans lequel les particules à base de silice sont contenues dans un sol de silice ayant un coefficient S dans la plage d'environ 5 jusqu'à environ 50% avant mélange avec le poly(uréthane).
- Procédé selon l'une quelconque des revendications 7 à 9, dans lequel le poly(uréthane) est désalinisé avant mélange avec les particules à base de silice.
- Procédé selon l'une quelconque des revendications 7 à 10, dans lequel les particules à base de silice ont une surface spécifique dans la plage de 300 à 1 300 m2/g.
- Procédé selon l'une quelconque des revendications 7 à 11, dans lequel les particules à base de silice ont une taille moyenne de particules variant d'environ 1 nm jusqu'à environ 50 nm.
- Procédé selon l'une quelconque des revendications 7 à 12, dans lequel les particules à base de silice ont une taille moyenne de particules variant d'environ 1 nm jusqu'à environ 10 nm.
- Procédé selon l'une quelconque des revendications 7 à 13, dans lequel le pH de la solution aqueuse du poly(uréthane) est ajusté à un pH d'au moins 8 avant mélange avec les particules à base de silice.
- Procédé selon l'une quelconque des revendications 7 à 14, dans lequel la composition aqueuse contenant de la silice a une densité de charge négative dans la plage de 0,1 à 6 meq/g.
- Composition aqueuse contenant de la silice pouvant être obtenue par le procédé selon l'une quelconque des revendications 7 à 15.
- Utilisation d'une composition aqueuse contenant de la silice selon l'une quelconque des revendications 1 à 6 ou 16 comme produit floculant en combinaison avec au moins un polymère organique dans la production de pâte de papier et pour la purification de l'eau.
- Procédé de production de papier à partir d'une suspension contenant des fibres cellulosiques, et facultativement des charges, comprenant l'ajout à la suspension d'au moins un polymère organique cationique et d'une composition aqueuse contenant de la silice selon l'une quelconque des revendications 1 à 6 ou 16.
- Procédé selon la revendication 18, dans lequel le polymère organique cationique est un amidon cationique ou un poly(acrylamide) cationique.
- Procédé selon l'une quelconque des revendications 18 à 19, dans lequel le polymère organique cationique comporte au moins un groupe aromatique.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02793740A EP1456468B1 (fr) | 2001-12-21 | 2002-12-20 | Composition aqueuse contenant de la silice et procede de production de papier |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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EP01850224 | 2001-12-21 | ||
EP01850224 | 2001-12-21 | ||
PCT/SE2002/002444 WO2003056099A1 (fr) | 2001-12-21 | 2002-12-20 | Composition aqueuse contenant de la silice et procede de production de papier |
EP02793740A EP1456468B1 (fr) | 2001-12-21 | 2002-12-20 | Composition aqueuse contenant de la silice et procede de production de papier |
Publications (2)
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EP1456468A1 EP1456468A1 (fr) | 2004-09-15 |
EP1456468B1 true EP1456468B1 (fr) | 2012-02-08 |
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EP02793740A Expired - Lifetime EP1456468B1 (fr) | 2001-12-21 | 2002-12-20 | Composition aqueuse contenant de la silice et procede de production de papier |
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Country | Link |
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EP (1) | EP1456468B1 (fr) |
JP (1) | JP2005513300A (fr) |
KR (1) | KR20040068321A (fr) |
CN (1) | CN1606647A (fr) |
AT (1) | ATE544906T1 (fr) |
AU (1) | AU2002359218B2 (fr) |
BR (1) | BR0215227A (fr) |
CA (1) | CA2470803C (fr) |
ES (1) | ES2381028T3 (fr) |
MX (1) | MXPA04005533A (fr) |
NO (1) | NO20043139L (fr) |
NZ (1) | NZ533263A (fr) |
PL (1) | PL215499B1 (fr) |
PT (1) | PT1456468E (fr) |
RU (1) | RU2274692C2 (fr) |
WO (1) | WO2003056099A1 (fr) |
ZA (1) | ZA200404079B (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US7323083B2 (en) | 2002-10-30 | 2008-01-29 | The Lubrizol Corporation | Adhesion promoters for glass-containing systems |
EP1560858A1 (fr) | 2002-10-30 | 2005-08-10 | The Lubrizol Corporation | Promoteurs d'adherence pour systemes contenant du verre |
US7955473B2 (en) | 2004-12-22 | 2011-06-07 | Akzo Nobel N.V. | Process for the production of paper |
JP4837032B2 (ja) * | 2005-05-16 | 2011-12-14 | アクゾ ノーベル ナムローゼ フェンノートシャップ | 紙の製造方法 |
US20060254464A1 (en) | 2005-05-16 | 2006-11-16 | Akzo Nobel N.V. | Process for the production of paper |
US9017649B2 (en) | 2006-03-27 | 2015-04-28 | Nalco Company | Method of stabilizing silica-containing anionic microparticles in hard water |
DE102007059736A1 (de) * | 2007-12-12 | 2009-06-18 | Omya Development Ag | Oberflächenmineralisierte organische Fasern |
WO2012117763A1 (fr) * | 2011-03-03 | 2012-09-07 | 富士フイルム株式会社 | Composition de dispersion de silice |
AR086593A1 (es) * | 2011-06-08 | 2014-01-08 | Akzo Nobel Chemicals Int Bv | Proceso para la produccion de papel y carton |
CN106349513A (zh) * | 2016-08-26 | 2017-01-25 | 强新正品(苏州)环保材料科技有限公司 | 一种高粘度硅溶胶及其制备方法 |
FR3055896B1 (fr) * | 2016-09-09 | 2020-04-03 | S.P.C.M. Sa | Procede de traitement d'effluents aqueux |
CN106833570B (zh) * | 2017-01-06 | 2019-05-28 | 中国海洋石油集团有限公司 | 一种悬浮减轻剂及其制备方法和用途 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US4313790A (en) | 1980-03-31 | 1982-02-02 | Pulp And Paper Research Institute Of Canada | Additives for increased retention and pitch control in paper manufacture |
US4795531A (en) * | 1987-09-22 | 1989-01-03 | Nalco Chemical Company | Method for dewatering paper |
GB8920456D0 (en) * | 1989-09-11 | 1989-10-25 | Albright & Wilson | Active sizing compositions |
US5185062A (en) | 1991-01-25 | 1993-02-09 | Nalco Chemical Company | Papermaking process with improved retention and drainage |
WO1993015271A1 (fr) * | 1992-01-29 | 1993-08-05 | Kemira Kemi Aktiebolag | Procede ameliore pour la fabrication de papier |
SE9502522D0 (sv) * | 1995-07-07 | 1995-07-07 | Eka Nobel Ab | A process for the production of paper |
US6315824B1 (en) | 1996-02-02 | 2001-11-13 | Rodrigue V. Lauzon | Coacervate stabilizer system |
US6165259A (en) | 1997-02-05 | 2000-12-26 | Akzo Nobel N.V. | Aqueous dispersions of hydrophobic material |
US6033524A (en) * | 1997-11-24 | 2000-03-07 | Nalco Chemical Company | Selective retention of filling components and improved control of sheet properties by enhancing additive pretreatment |
EP0953680A1 (fr) * | 1998-04-27 | 1999-11-03 | Akzo Nobel N.V. | Procédé pour la fabrication du papier |
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2002
- 2002-12-20 PL PL369967A patent/PL215499B1/pl not_active IP Right Cessation
- 2002-12-20 EP EP02793740A patent/EP1456468B1/fr not_active Expired - Lifetime
- 2002-12-20 NZ NZ533263A patent/NZ533263A/en unknown
- 2002-12-20 KR KR10-2004-7009816A patent/KR20040068321A/ko active IP Right Grant
- 2002-12-20 ES ES02793740T patent/ES2381028T3/es not_active Expired - Lifetime
- 2002-12-20 CA CA002470803A patent/CA2470803C/fr not_active Expired - Fee Related
- 2002-12-20 JP JP2003556605A patent/JP2005513300A/ja active Pending
- 2002-12-20 CN CNA028256441A patent/CN1606647A/zh active Pending
- 2002-12-20 RU RU2004122419/04A patent/RU2274692C2/ru not_active IP Right Cessation
- 2002-12-20 WO PCT/SE2002/002444 patent/WO2003056099A1/fr active IP Right Grant
- 2002-12-20 AU AU2002359218A patent/AU2002359218B2/en not_active Ceased
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- 2002-12-20 AT AT02793740T patent/ATE544906T1/de active
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Also Published As
Publication number | Publication date |
---|---|
AU2002359218B2 (en) | 2005-12-08 |
CA2470803C (fr) | 2009-05-26 |
CN1606647A (zh) | 2005-04-13 |
ES2381028T3 (es) | 2012-05-22 |
CA2470803A1 (fr) | 2003-07-10 |
RU2004122419A (ru) | 2005-03-27 |
PL215499B1 (pl) | 2013-12-31 |
PL369967A1 (en) | 2005-05-02 |
NO20043139L (no) | 2004-09-21 |
ATE544906T1 (de) | 2012-02-15 |
RU2274692C2 (ru) | 2006-04-20 |
ZA200404079B (en) | 2005-05-25 |
EP1456468A1 (fr) | 2004-09-15 |
AU2002359218A1 (en) | 2003-07-15 |
MXPA04005533A (es) | 2004-09-13 |
KR20040068321A (ko) | 2004-07-30 |
WO2003056099A1 (fr) | 2003-07-10 |
JP2005513300A (ja) | 2005-05-12 |
BR0215227A (pt) | 2004-11-16 |
NZ533263A (en) | 2005-12-23 |
PT1456468E (pt) | 2012-05-08 |
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