WO2022219085A1 - Procede de fabrication de papier et de carton - Google Patents
Procede de fabrication de papier et de carton Download PDFInfo
- Publication number
- WO2022219085A1 WO2022219085A1 PCT/EP2022/059953 EP2022059953W WO2022219085A1 WO 2022219085 A1 WO2022219085 A1 WO 2022219085A1 EP 2022059953 W EP2022059953 W EP 2022059953W WO 2022219085 A1 WO2022219085 A1 WO 2022219085A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polymer
- water
- solid particles
- reaction
- soluble polymer
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000011111 cardboard Substances 0.000 title claims abstract description 19
- 239000011087 paperboard Substances 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 229920000642 polymer Polymers 0.000 claims abstract description 94
- 239000002245 particle Substances 0.000 claims abstract description 33
- 239000007864 aqueous solution Substances 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 239000007787 solid Substances 0.000 claims abstract description 28
- 239000000725 suspension Substances 0.000 claims abstract description 26
- 229920003169 water-soluble polymer Polymers 0.000 claims abstract description 25
- 239000000178 monomer Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 14
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 10
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims abstract description 9
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 claims abstract description 7
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 11
- 229910052783 alkali metal Inorganic materials 0.000 claims description 9
- 150000001340 alkali metals Chemical class 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 8
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- 239000011325 microbead Substances 0.000 claims description 7
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 150000001299 aldehydes Chemical group 0.000 claims description 5
- 239000007900 aqueous suspension Substances 0.000 claims description 5
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- 239000003643 water by type Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 229920001519 homopolymer Polymers 0.000 claims description 3
- 239000011541 reaction mixture Substances 0.000 claims description 3
- 238000010557 suspension polymerization reaction Methods 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 229940015043 glyoxal Drugs 0.000 claims description 2
- 238000000265 homogenisation Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 239000000243 solution Substances 0.000 description 12
- 239000000835 fiber Substances 0.000 description 10
- 239000000123 paper Substances 0.000 description 9
- 229920002401 polyacrylamide Polymers 0.000 description 9
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 9
- 125000000129 anionic group Chemical group 0.000 description 7
- 125000002091 cationic group Chemical group 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 239000005708 Sodium hypochlorite Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000012429 reaction media Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 229910019093 NaOCl Inorganic materials 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000011859 microparticle Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- NJSSICCENMLTKO-HRCBOCMUSA-N [(1r,2s,4r,5r)-3-hydroxy-4-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)O[C@H]1C(O)[C@@H](OS(=O)(=O)C=2C=CC(C)=CC=2)[C@@H]2OC[C@H]1O2 NJSSICCENMLTKO-HRCBOCMUSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- ORQYPOUSZINNCB-UHFFFAOYSA-N potassium;hypobromite Chemical compound [K+].Br[O-] ORQYPOUSZINNCB-UHFFFAOYSA-N 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UZNHKBFIBYXPDV-UHFFFAOYSA-N trimethyl-[3-(2-methylprop-2-enoylamino)propyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)NCCC[N+](C)(C)C UZNHKBFIBYXPDV-UHFFFAOYSA-N 0.000 description 2
- PSBDWGZCVUAZQS-UHFFFAOYSA-N (dimethylsulfonio)acetate Chemical compound C[S+](C)CC([O-])=O PSBDWGZCVUAZQS-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-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
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 1
- DPBJAVGHACCNRL-UHFFFAOYSA-N 2-(dimethylamino)ethyl prop-2-enoate Chemical compound CN(C)CCOC(=O)C=C DPBJAVGHACCNRL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- OUEBZMGRFLTABC-UHFFFAOYSA-N 2-methyl-1-(prop-2-enoylamino)propane-2-sulfonic acid Chemical compound OS(=O)(=O)C(C)(C)CNC(=O)C=C OUEBZMGRFLTABC-UHFFFAOYSA-N 0.000 description 1
- XEEYSDHEOQHCDA-UHFFFAOYSA-N 2-methylprop-2-ene-1-sulfonic acid Chemical compound CC(=C)CS(O)(=O)=O XEEYSDHEOQHCDA-UHFFFAOYSA-N 0.000 description 1
- DNHDSWZXBHTLDP-UHFFFAOYSA-N 3-(2-ethenylpyridin-1-ium-1-yl)propane-1-sulfonate Chemical compound [O-]S(=O)(=O)CCC[N+]1=CC=CC=C1C=C DNHDSWZXBHTLDP-UHFFFAOYSA-N 0.000 description 1
- BLGRSDRGCZQJMW-UHFFFAOYSA-N 3-(dimethylamino)propane-1-sulfonic acid ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C.CN(C)CCCS(O)(=O)=O BLGRSDRGCZQJMW-UHFFFAOYSA-N 0.000 description 1
- JHUFGBSGINLPOW-UHFFFAOYSA-N 3-chloro-4-(trifluoromethoxy)benzoyl cyanide Chemical compound FC(F)(F)OC1=CC=C(C(=O)C#N)C=C1Cl JHUFGBSGINLPOW-UHFFFAOYSA-N 0.000 description 1
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- UFEOXCGSEROQQN-UHFFFAOYSA-N C(C(=C)C)(=O)OCC.C(C)[N+](C)(C)C Chemical compound C(C(=C)C)(=O)OCC.C(C)[N+](C)(C)C UFEOXCGSEROQQN-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 239000004908 Emulsion polymer Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 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 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical group 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- MURATLQCNSCUID-UHFFFAOYSA-N dimethyl(3-sulfopropyl)azanium 2-methyl-N-propylprop-2-enimidate Chemical compound CCCN=C([O-])C(C)=C.C[NH+](C)CCCS(O)(=O)=O MURATLQCNSCUID-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 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 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 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
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 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
- 210000001724 microfibril Anatomy 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000006174 pH buffer Substances 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N phosphonic acid group Chemical group P(O)(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000012673 precipitation polymerization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- UIIIBRHUICCMAI-UHFFFAOYSA-N prop-2-ene-1-sulfonic acid Chemical compound OS(=O)(=O)CC=C UIIIBRHUICCMAI-UHFFFAOYSA-N 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 229910001379 sodium hypophosphite Inorganic materials 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- SZHIIIPPJJXYRY-UHFFFAOYSA-M sodium;2-methylprop-2-ene-1-sulfonate Chemical compound [Na+].CC(=C)CS([O-])(=O)=O SZHIIIPPJJXYRY-UHFFFAOYSA-M 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229940117986 sulfobetaine Drugs 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical group OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- VPYJNCGUESNPMV-UHFFFAOYSA-N triallylamine Chemical compound C=CCN(CC=C)CC=C VPYJNCGUESNPMV-UHFFFAOYSA-N 0.000 description 1
- OEIXGLMQZVLOQX-UHFFFAOYSA-N trimethyl-[3-(prop-2-enoylamino)propyl]azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CCCNC(=O)C=C OEIXGLMQZVLOQX-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F120/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F120/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F120/52—Amides or imides
- C08F120/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F120/56—Acrylamide; Methacrylamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/12—Hydrolysis
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
- D21H17/375—Poly(meth)acrylamide
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
- D21H17/45—Nitrogen-containing groups
Definitions
- the present invention relates to a process for the manufacture of paper or board having improved drainage and runnability properties. More specifically, the subject of the invention is a process involving the reaction of a water-soluble polymer in the form of solid particles in a mixture of hydroxide (alkali metal hydroxide and/or alkaline-earth metal hydroxide) and hypo- halide (alkali metal hypo-halide and or alkaline-earth metal hypo-halide) and then inject it directly into the fibrous suspension used to make the paper or cardboard.
- hydroxide alkali metal hydroxide and/or alkaline-earth metal hydroxide
- hypo- halide alkali metal hypo-halide and or alkaline-earth metal hypo-halide
- the present invention also relates to the papers and cardboards with improved physical properties obtained by this process.
- the drainage properties relate to the ability of the fibrous mat to evacuate or drain the maximum amount of water before drying. Improved drainage properties mean energy savings and increased production capacity.
- Runnability refers to the optimization of the operation of the paper machine by increasing productivity through better drainage on the table, better dryness in the press section, a reduction in breakages through greater cleanliness of the circuits and a reduction deposits.
- WO 2006/075115 describes a process for manufacturing a sheet of paper or cardboard using at least two dry strength agents, respectively: a first agent resulting from the Hofmann degradation reaction on a (co) base polymer, and a second agent corresponding to a (co)polymer having an anionic charge density greater than 0.1 meq/g.
- EP 2 536489 describes a device for dispersing and grinding polymer.
- EP 2 840 100 describes the functionalization of a polymer by means of a polyfunctional compound.
- Polyvinylamines are known to improve drainage during paper formation.
- Polyvinylamines can be obtained by reacting a solution of polyacrylamide in a mixture of alkali hydroxide and/or alkaline earth hydroxide and alkali hypohalide and/or hypohalide of alkaline earth metal followed by treatment in an acid medium.
- the Applicant has discovered that a process involving the reaction of a water-soluble polymer in the form of solid particles in a mixture of hydroxide (alkali metal hydroxide and/or alkaline earth metal hydroxide) and hypo -halide (alkali metal hypo-halide and/or alkaline-earth metal hypo-halide) to then inject it directly into the fibrous suspension used to manufacture the paper or the cardboard makes it possible to improve the drainage properties and dry resistance.
- hydroxide alkali metal hydroxide and/or alkaline earth metal hydroxide
- hypo -halide alkali metal hypo-halide and/or alkaline-earth metal hypo-halide
- This process also makes it possible to avoid all the logistics (transport or installation of a dissolution unit) inherent in the handling of solutions of water-soluble polymers.
- the process is all the more simple as the dissolution of the polymer takes place very quickly in the reaction mixture of hydroxide and alkali and/or alkaline-earth hypohalide and as it does not It is not necessary to heat the reaction medium or to use heat exchangers.
- alkaline denotes an alkali metal, advantageously lithium, sodium or potassium.
- alkali hydroxide designates a hydroxide (OH ) of at least one alkali metal, for example NaOH, KOH or NaOH+KOH. The same is true for alkaline earth hydroxide.
- alkaline-earth is meant an alkaline-earth metal, advantageously calcium or magnesium.
- a hypo-halide is an oxyanion, for example hypochlorite CIO.
- alkaline hypo-halide means a hypo-halide of at least one alkali metal and at least one hypo-halide, for example NaOCl, KOBr or NaOCl+KOBr. The same is true for the alkaline-earth hypo-halide.
- the process of the invention makes it possible to increase the range of drainage agents and current dry strength compared to a similar process using polyacrylamides in the form of an aqueous solution.
- the invention relates to a process for manufacturing a sheet of paper or cardboard from a fibrous suspension, comprising the following steps: a) injection of a polymer P2 into a fibrous suspension (advantageously an aqueous suspension cellulosic fibers), b) forming a sheet of paper or cardboard, c) drying the sheet of paper or cardboard, the polymer P2 being prepared, prior to step a), from a polymer water-soluble PI in the form of solid particles, PI being a water-soluble polymer of at least one nonionic monomer selected from acrylamide, methacrylamide, N,N-dimethylacrylamide, and acrylonitrile, the polymer P2 being obtained by a reaction Re comprising (advantageously consisting of) the addition and dissolution of the solid particles of water-soluble polymer PI in an aqueous solution M1 comprising: (i) an alkali metal hydroxide, or an alkaline-earth metal hydroxide or mixtures thereof, (ii)
- the water-soluble polymer PI is therefore dissolved in the aqueous solution Ml during the reaction
- step a) is carried out within a period not exceeding 24 hours from the start of the Re reaction, that is to say from the addition of the solid particles of water-soluble polymer PI in the aqueous solution M1.
- the dry matter corresponds to the dry extract obtained after evaporation of the water from the fibrous suspension used in a process for manufacturing a sheet of paper or cardboard.
- the dry matter advantageously consists of cellulosic fibers and fillers.
- the term "cellulosic fibers" encompasses any cellulosic entity, including fibers, fines, microfibrils or nanofibrils.
- fibrous suspension we mean the thick paste or the thin paste which are based on water and cellulosic fibers.
- the thick stock having a mass concentration of dry matter generally greater than 1%, or even greater than 3%, is upstream of the mixing pump (fan-pump).
- the diluted paste having a mass concentration of dry matter generally less than 1%, is located downstream of the mixing pump.
- polymer designates both homopolymers and copolymers of at least two distinct monomers.
- An amphoteric polymer is a polymer comprising cationic charges and anionic charges, preferably as many anionic charges as cationic charges.
- water-soluble polymer refers to a polymer which yields an aqueous solution without insoluble particles when dissolved with stirring for 4 hours at 25°C and with a concentration of 20 gL 1 in deionized water .
- Value ranges include lower and upper bounds. Thus, the ranges of values "between 0.1 and 1.0" and “from 0.1 to 1" include the values 0.1 and 1.0.
- the water-soluble polymer PI is a polymer of at least one nonionic monomer chosen from acrylamide, methacrylamide, N,N-dimethylacrylamide, and acrylonitrile.
- the polymer PI contains at least 50 mol% of at least one of these nonionic monomers.
- the polymer PI can also contain anionic and/or cationic and/or zwitterionic monomers.
- Polymer PI is advantageously devoid of nonionic monomer which is not chosen from acrylamide, methacrylamide, N,N-dimethylacrylamide, and acrylonitrile.
- the anionic monomers are preferably chosen from the group comprising monomers having a carboxylic acid function and their salts, including acrylic acid, methacrylic acid, itaconic acid, maleic acid, monomers having a sulphonic acid function and their salts, including acrylamido tert-butyl sulfonic acid (ATBS), allyl sulfonic acid and methallyl sulfonic acid, and their salts; and monomers having a phosphonic acid function and their salts.
- monomers having a carboxylic acid function and their salts including acrylic acid, methacrylic acid, itaconic acid, maleic acid, monomers having a sulphonic acid function and their salts, including acrylamido tert-butyl sulfonic acid (ATBS), allyl sulfonic acid and methallyl sulfonic acid, and their salts; and monomers having a phosphonic acid function and their salts.
- ATBS acryla
- the salts of anionic monomers of the polymer PI are salts of an alkali metal, an alkaline-earth metal or an ammonium (preferably a quaternary ammonium).
- the cationic monomers are preferably chosen from the group comprising quaternized or salified dimethylaminoethyl acrylate (AD AME), quaternized or salified dimethylaminoethyl methacrylate (MADAME), diallyldimethylammonium chloride (DADMAC), acrylamidopropyltrimethylammonium chloride (APTAC) , and methacrylamidopropyltrimethylammonium chloride (MAPTAC).
- the cationic monomers of the polymer PI have as counterion a halide, preferably a chloride ion.
- the zwitterionic monomers are preferably chosen from the group comprising sulfobetaine monomers such as sulfopropyl dimethylammonium ethyl methacrylate, sulfopropyl dimethylammonium propyl methacrylamide, or sulfopropyl 2-vinylpyridinium; phosphobetaine monomers, such as phosphato ethyltrimethylammonium ethyl methacrylate; and carboxybetaine monomers.
- sulfobetaine monomers such as sulfopropyl dimethylammonium ethyl methacrylate, sulfopropyl dimethylammonium propyl methacrylamide, or sulfopropyl 2-vinylpyridinium
- phosphobetaine monomers such as phosphato ethyltrimethylammonium ethyl methacrylate
- carboxybetaine monomers such as phosphato ethyl
- the water-soluble polymer PI is a homopolymer or a copolymer of acrylamide or methacrylamide.
- the PI polymer can be linear, structured or cross-linked.
- the crosslinking agents allowing the structuring can in particular be chosen from sodium allyl sulfonate, sodium methallyl sulfonate, sodium methallyl disulfonate, methylenebisacrylamide, triallylamine, triallylammonium chloride.
- the structuring of the polymer PI can also be obtained with at least one polyfunctional compound containing at least 3 heteroatoms chosen from N, S, O, P and each having at least one mobile hydrogen.
- This polyfunctional compound can in particular be a polyethyleneimine or a polyamine.
- Reaction Re comprises the addition and dissolution of the solid particles of polymer PI in an aqueous solution Ml of: (i) an alkaline hydroxide and/or an alkaline-earth hydroxide, (ii) a hypo-halide d alkaline and/or an alkaline-earth hypo-halide, with a reaction time Re of 10 seconds to 5 hours to form the polymer P2.
- the aqueous solution M1 is an aqueous solution of soda (sodium hydroxide) and sodium hypochlorite.
- the reaction time of the polymer PI in the aqueous solution M1 of hypohalide and hydroxide is from 10 seconds to 180 minutes.
- the Re reaction is advantageously carried out at a temperature comprised between 10 and 30°C, more advantageously between 15 and 25°C.
- Reaction Re is advantageously carried out by adding polymer PI in the form of solid particles to aqueous solution M1.
- the solid particles of polymer PI are in the form of powder, microbeads, solid particles in oily suspension, or solid particles in aqueous suspension.
- the powder form of the polymer PI can be obtained by gel polymerization, precipitation polymerization or spray drying of the inverse emulsion polymer.
- Polymer microbeads PI are advantageously obtained by reverse suspension polymerization.
- the oily suspensions of solid particles of polymer PI can be obtained by distillation of the polymer in inverse emulsion or by suspending the polymer in an oil.
- the oily suspensions can contain between 10 and 60% by weight of polymer particles PI.
- the aqueous suspensions of solid particles of polymer PI are advantageously obtained by polymerization in dispersion (in a brine) or by suspending the polymer in a brine.
- the aqueous suspension may contain between 10 and 50% by weight of polymer particles PI.
- the polymer PI is added to the reaction medium in the form of a powder resulting from gel polymerization or of microbeads resulting from reverse suspension polymerization.
- the polymer PI When the polymer PI is in powder form, it is preferably dispersed and dissolved in an aqueous solution M1 by means of a device for dispersing and grinding the polymer, in particular a PSU (Polymer Slicing Unit, document WO2011107683), fed by a circuit of the aqueous solution M1.
- a device for dispersing and grinding the polymer in particular a PSU (Polymer Slicing Unit, document WO2011107683)
- a circuit of the aqueous solution M1 A person skilled in the art knows how to adapt the manufacturing materials of this type of device so that it resists the aqueous solution M1 of hydroxide and hypo-halide.
- the reaction Re preferably between 0.1 and 20% by weight of solid particles of polymer PI relative to the weight of the aqueous solution M1, more preferably between 0.3 and 10% and even more preferably between 0.5 and 3 0 by weight, the aqueous solution M1 is added.
- the polymer P2 can be functionalized with a compound comprising at least one aldehyde function to give a polymer P3, for example by adding a compound comprising at least an aldehyde function.
- the compound comprising at least one aldehyde function is glyoxal.
- the pH of the reaction mixture resulting from the reaction Re and containing the polymer P2 can be adjusted by adding acid between 0.5 and 7.5, more preferably between 1.0 and 3, 0.
- acid between 0.5 and 7.5, more preferably between 1.0 and 3, 0.
- a person skilled in the art knows how to adjust the pH of this type of reaction medium.
- the adjustment of the pH is advantageously carried out in the absence of formation of the polymer P3.
- the polymer P2 (or P3) is introduced into the white waters and/or the thick paste and/or the mixture formed by the white waters and the thick paste after homogenization of the fibrous suspension in the pump of dilution (fan-pump).
- the polymer P2 (or P3) can also be introduced into the papermaking process at the level of the forming table, for example by spraying or in the form of a foam, or at the level of the size press (coater).
- the polymer P2 (or P3) can also be introduced into the papermaking process at the level of the forming table, for example by spraying or in the form of a foam, or at the level of the size press (coater).
- between 0.1 and 10 kg.t 1 , and preferably between 0.2 and 5.0 kg.t 1 of polymer P2 (or P3) are added to the fibrous suspension.
- the fibrous suspension encompasses the possible use of different cellulosic fibers: virgin fibers, recycled fibers, chemical pulp, mechanical pulp, micro-fibrillated cellulose or nano-fibrillated cellulose.
- the fibrous suspension also encompasses the use of these different cellulosic fibers with all types of fillers such as TiCh, CaCCL (ground or precipitated), kaolin, organic fillers and mixtures thereof.
- Polymer P2 or P3 can be used within the papermaking process in combination with other products such as inorganic or organic coagulants, dry strength agents, wet strength agents, natural polymers such as starches or carboxymethylcellulose (CMC), inorganic microparticles such as bentonite microparticles and colloidal silica microparticles, organic polymers of any ionic nature (nonionic, cationic, anionic, or amphoteric) and which may be (without being limiting) linear, branched, cross-linked, hydrophobic, or associative.
- CMC carboxymethylcellulose
- organic polymers of any ionic nature nonionic, cationic, anionic, or amphoteric
- the DDA (“Dynamic Drainage Analyzer”) makes it possible to automatically determine the time (in seconds) required to drain under vacuum a fibrous suspension deposited on a cloth.
- the necessary quantity of paste is removed so as to obtain a sheet having a basis weight of 90 gm 2 .
- the wet paste is introduced into the vat of the dynamic molder and is kept under agitation.
- the different components of the system are injected into this paste according to the predefined sequence.
- a contact time of 30 to 45 seconds is generally respected between each addition of polymer.
- Formettes of paper are produced with an automatic dynamic former: a blotter and the forming fabric are placed in the bowl of the dynamic former before starting the rotation of the bowl at 1000 rpm and building the water wall.
- the treated pulp is spread over the water wall to form the fibrous mat on the forming fabric.
- the fibrous mat is recovered, pressed under a press delivering 4 bar, then dried at 117°C.
- the sheet obtained is conditioned overnight in a room with controlled humidity and temperature (50% relative humidity and 23°C). The dry strength properties of all the sheets obtained by this procedure are then measured.
- the burst (Burst Index) is measured with a Messmer Buchel M 405 burst tester according to the TAPPI T403 om-02 standard. The result is expressed in kPa or in percentage compared to a reference.
- the bursting index expressed in kPa.m 2 /g, is determined by dividing this value by the basis weight of the sheet tested.
- Dry breaking length is measured in the machine direction (DBL SM) and in the cross direction (DBL ST) with a Testometric AX tensile device according to TAPPI T494 om-01. The result is expressed in km or in percentage compared to a reference.
- 310 g of water are introduced into a 1 liter reactor equipped with a mechanical stirrer, a thermometer, a condenser and a gaseous nitrogen plunger.
- the pH of the reaction medium is adjusted to 3.3 using a pH buffer (NaOH 30% by weight in water and H 3 PO 4 75% by weight in water).
- the medium is heated and maintained at a temperature of between 79 and 81° C. using a water bath.
- 400 g of 50% acrylamide, 237.8 g of water and 2.40 g of 100% sodium hypophosphite are incorporated (cast 1) for 180 minutes. Pour 2, 0.48 g of 100% sodium persulfate and 48 g of water for 180 minutes.
- the polymer solution is maintained at 80° C. for 120 minutes after the end of the casting.
- the solution of polymer P1-A obtained has a pH of 5.7, a concentration by weight of polymer P1-A of 20% and a viscosity of 6000 cps.
- Polymer Pl-B Acrylamide homopolymer in the form of microbeads sold by SNF under the name: FlobeadsTM AB 300 H.
- Polymer Pl-C Acrylamide homopolymer in the form of powder sold by SNF under the name: FlopamTM FA 920 BPM.
- Pl-A in aqueous solution
- Pl-B microbeads
- Pl-C binder
- An aqueous solution of sodium hypochlorite 14.29 g (NaOCl) at 14.6% (by weight in water) and 7.5 g of sodium hydroxide at 30% (by weight in water) is prepared by function of the alpha (0.5) and beta (2.0) coefficients for the Re reaction.
- Pl-A polymer solution is at 50°C
- the aqueous solution of sodium hypochlorite and sodium hydroxide is added to Pl -HAS.
- 138.20 g of water is added.
- the polymer P2-A is obtained at a concentration of 2% by weight.
- aqueous solution M1 of 3.11 g of sodium hypochlorite (NaOCl) at 14.6% (by weight in water) and 1.63 g of sodium hydroxide at 30% (by weight in water) is prepared according to the coefficients alpha (0.5) and beta (2.0) for the Re reaction. 37.7 g of water are then added.
- polymer P1-B or P1-C 0.87 g of polymer P1-B or P1-C are added to the aqueous solution M1 at room temperature and with stirring.
- the polymer in the form of a suspension dissolves and reacts for 120 minutes in the aqueous solution of sodium hypochlorite and sodium hydroxide.
- the solutions of polymers P2-B or P2-C are respectively obtained, with a final concentration by weight of polymer equal to 2%.
- Table 1 Drainage according to the polymer. An improvement in drainage is observed with the use of polymers P2-B and P2-C (compared to polymer P2-A).
- Burst performance is improved by the use of P2-B and P2-C polymer.
- the same trend is observed for the breaking length measurement in the forward direction (DBL SM) and in the cross direction (DBL ST).
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- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Paper (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22723052.1A EP4323585A1 (fr) | 2021-04-15 | 2022-04-13 | Procede de fabrication de papier et de carton |
CN202280028579.5A CN117396647A (zh) | 2021-04-15 | 2022-04-13 | 生产纸张和纸板的方法 |
AU2022258761A AU2022258761A1 (en) | 2021-04-15 | 2022-04-13 | Method for manufacturing paper and cardboard |
BR112023021159A BR112023021159A2 (pt) | 2021-04-15 | 2022-04-13 | Método para produzir uma folha de papel ou de papelão a partir de uma suspensão fibrosa |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR2103910A FR3121941A1 (fr) | 2021-04-15 | 2021-04-15 | Procede de fabrication de papier et de carton |
FRFR2103910 | 2021-04-15 |
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WO2022219085A1 true WO2022219085A1 (fr) | 2022-10-20 |
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PCT/EP2022/059953 WO2022219085A1 (fr) | 2021-04-15 | 2022-04-13 | Procede de fabrication de papier et de carton |
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EP (1) | EP4323585A1 (fr) |
CN (1) | CN117396647A (fr) |
AU (1) | AU2022258761A1 (fr) |
BR (1) | BR112023021159A2 (fr) |
FR (1) | FR3121941A1 (fr) |
WO (1) | WO2022219085A1 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4110520A (en) | 1976-12-17 | 1978-08-29 | Kyoritsu Yuki Co., Ltd. | Modification of water-soluble acrylic polymer |
US5292821A (en) | 1988-12-28 | 1994-03-08 | Mitsui Toatsu Chemicals, Inc. | Catonic acrylamide polymers and the applications of these polymers |
WO2006075115A2 (fr) | 2005-01-17 | 2006-07-20 | Snf S.A.S. | Procede de fabrication de papier et carton de grande resistance a sec et papiers et cartons ainsi obtenus |
WO2011107683A1 (fr) | 2010-02-16 | 2011-09-09 | S.P.C.M. Sa | Appareil perfectionne de dispersion de polymere hydrosoluble |
EP2840100A1 (fr) | 2013-08-22 | 2015-02-25 | S.P.C.M. Sa | Nouveaux complexes de polymeres hydrosolubles et leurs utilisations |
-
2021
- 2021-04-15 FR FR2103910A patent/FR3121941A1/fr active Pending
-
2022
- 2022-04-13 EP EP22723052.1A patent/EP4323585A1/fr active Pending
- 2022-04-13 AU AU2022258761A patent/AU2022258761A1/en active Pending
- 2022-04-13 BR BR112023021159A patent/BR112023021159A2/pt unknown
- 2022-04-13 WO PCT/EP2022/059953 patent/WO2022219085A1/fr active Application Filing
- 2022-04-13 CN CN202280028579.5A patent/CN117396647A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4110520A (en) | 1976-12-17 | 1978-08-29 | Kyoritsu Yuki Co., Ltd. | Modification of water-soluble acrylic polymer |
US5292821A (en) | 1988-12-28 | 1994-03-08 | Mitsui Toatsu Chemicals, Inc. | Catonic acrylamide polymers and the applications of these polymers |
WO2006075115A2 (fr) | 2005-01-17 | 2006-07-20 | Snf S.A.S. | Procede de fabrication de papier et carton de grande resistance a sec et papiers et cartons ainsi obtenus |
WO2011107683A1 (fr) | 2010-02-16 | 2011-09-09 | S.P.C.M. Sa | Appareil perfectionne de dispersion de polymere hydrosoluble |
EP2536489A1 (fr) | 2010-02-16 | 2012-12-26 | S.P.C.M. Sa | Appareil perfectionne de dispersion de polymere hydrosoluble |
EP2840100A1 (fr) | 2013-08-22 | 2015-02-25 | S.P.C.M. Sa | Nouveaux complexes de polymeres hydrosolubles et leurs utilisations |
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AU2022258761A1 (en) | 2023-10-26 |
BR112023021159A2 (pt) | 2023-12-19 |
EP4323585A1 (fr) | 2024-02-21 |
FR3121941A1 (fr) | 2022-10-21 |
CN117396647A (zh) | 2024-01-12 |
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