EP0700473B1 - Verfahren zur papierherstellung - Google Patents
Verfahren zur papierherstellung Download PDFInfo
- Publication number
- EP0700473B1 EP0700473B1 EP93902274A EP93902274A EP0700473B1 EP 0700473 B1 EP0700473 B1 EP 0700473B1 EP 93902274 A EP93902274 A EP 93902274A EP 93902274 A EP93902274 A EP 93902274A EP 0700473 B1 EP0700473 B1 EP 0700473B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cationic
- aluminum
- added
- polyacrylamide
- aluminum salt
- 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
- 238000000034 method Methods 0.000 title claims abstract description 34
- 125000002091 cationic group Chemical group 0.000 claims abstract description 52
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 46
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000725 suspension Substances 0.000 claims abstract description 27
- 230000014759 maintenance of location Effects 0.000 claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 125000000129 anionic group Chemical group 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 12
- 239000002253 acid Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 9
- 238000010008 shearing Methods 0.000 claims abstract description 7
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 5
- 238000011065 in-situ storage Methods 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 15
- 239000000123 paper Substances 0.000 claims description 15
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 14
- 239000002585 base Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 229920002472 Starch Polymers 0.000 claims description 12
- 239000008107 starch Substances 0.000 claims description 12
- 235000019698 starch Nutrition 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 10
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 9
- 229940037003 alum Drugs 0.000 claims description 8
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 5
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 5
- 230000002452 interceptive effect Effects 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 229920000768 polyamine Polymers 0.000 claims description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 2
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 150000001450 anions Chemical class 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims 2
- 229920002873 Polyethylenimine Polymers 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229920000642 polymer Polymers 0.000 description 16
- 238000012360 testing method Methods 0.000 description 15
- 150000003839 salts Chemical class 0.000 description 9
- 239000000440 bentonite Substances 0.000 description 8
- 229910000278 bentonite Inorganic materials 0.000 description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 239000000178 monomer Substances 0.000 description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 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 6
- 238000007792 addition Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 150000004676 glycans Chemical class 0.000 description 4
- 229920001282 polysaccharide Polymers 0.000 description 4
- 239000005017 polysaccharide Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229920006317 cationic polymer Polymers 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
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- -1 starch Chemical class 0.000 description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- 229920002907 Guar gum Polymers 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000003926 acrylamides Chemical class 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- 239000013065 commercial product Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 239000000665 guar gum Substances 0.000 description 2
- 229960002154 guar gum Drugs 0.000 description 2
- 235000010417 guar gum Nutrition 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DPBJAVGHACCNRL-UHFFFAOYSA-N 2-(dimethylamino)ethyl prop-2-enoate Chemical compound CN(C)CCOC(=O)C=C DPBJAVGHACCNRL-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 229940126062 Compound A Drugs 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 125000004103 aminoalkyl group Chemical group 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 125000004663 dialkyl amino group Chemical group 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 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
- 229940050176 methyl chloride Drugs 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 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
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 229910052913 potassium silicate Inorganic materials 0.000 description 1
- 229920001592 potato starch Polymers 0.000 description 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 235000015424 sodium Nutrition 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- FZUJWWOKDIGOKH-UHFFFAOYSA-N sulfuric acid hydrochloride Chemical compound Cl.OS(O)(=O)=O FZUJWWOKDIGOKH-UHFFFAOYSA-N 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000003643 water by type Substances 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
-
- 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
- D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised
-
- 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
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
-
- 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
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/56—Polyamines; Polyimines; Polyester-imides
-
- 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
- D21H17/66—Salts, e.g. alums
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
- D21H23/06—Controlling the addition
- D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
Definitions
- the present invention relates to a process for producing paper by adding to an aqueous fiber suspension, which possibly contains a filler, auxiliary agents to improve retention and/or dewatering, the auxiliaries being a cationic long-chain polyacrylamide and an aluminum salt, and by dewatering the fiber suspension during the sheet-forming stage.
- an aqueous fiber suspension which possibly contains a filler, auxiliary agents to improve retention and/or dewatering, the auxiliaries being a cationic long-chain polyacrylamide and an aluminum salt, and by dewatering the fiber suspension during the sheet-forming stage.
- the invention thus relates to improving retention and dewatering in connection with the production of paper.
- retention agents dispersed or emulsified substances present in the pulp, such as fillers, resin dispersions, fines, etc., are flocculated, whereby they are caused to adhere to the paper web.
- the agents used for improving retention also improve dewatering in the wire section of the paper-making machine.
- High dewatering and high retention are indeed often achieved simultaneously.
- Dewatering can further be divided into free dewatering and dewatering produced by means of reduced pressure. These may be contradictory, and therefore a precise balance is required between these properties.
- the aim in selecting the retention agent is to obtain a maximally dry paper web both after the wire section and after the press section.
- EP-A-0235893 discloses paper or paper board made by passing an aqueous cellulosic suspension through a centriscreen or other shear device and then draining the purified suspension. An improved combination of retention, drainage, drying and formation is said to be achieved by adding to the suspension an excess of high molecular weight linear synthetic cationic polymer before shearing the suspension and adding bentonite after shearing.
- the object of the present invention is to provide a paper production process wherein paper or board is made from an aqueous suspension containing cellulose fiber and possibly an inorganic filler by using a chemical combination and batching method which improve retention and dewatering.
- the other objects are a clean machine and good compressibility. Furthermore, the quality properties of the paper must be good.
- the invention is based on the fact that by using a long-chain polyacrylamide and an aluminum salt, a synergistic effect is achieved by adding to an aqueous fiber suspension, which possibly contains a filler, first a cationic long-chain polyacrylamide and then, directly before sheet formation, a polyaluminum salt or a combination which comprises an aluminum salt and a base or an acid which form in situ aluminum hydroxide particles having anionic surface charges, in which case the pH before sheet formation should be within the range 7-9 in order to produce the anionic surface charges of the aluminum hydroxide.
- the present invention provides a number of advantages over the commercial systems and inventions mentioned above.
- a long-chain cationic polyacrylamide the process is not tied to polysaccharides, for example starch, which need to be used in large amounts. Therefore there is the danger that, when passing into the cycled waters, they cause problems, since they increase the consumption of oxygen in the water and load the waste water treatment plant. Furthermore, they deteriorate dewatering in certain conditions. Polysaccharides often also contain anionic substituents, even though they are cationized. For this reason there may arise interaction with many different pulp components. At the same time the pH dependency also increases. Also, it is not possible to control sufficiently well the constancy of the quality of the polysaccharides, since they are derived from vegetable raw materials. In a cationic polyacrylamide, it is possible to produce, within very wide limits, the desired chain length and charge density.
- the known system based on a colloidal silica sol is in general very expensive compared with the system according to the invention.
- the known system made up of a polymer and bentonite involves certain disadvantages. It has been noted that bentonite increases the linting and porosity of paper. Its handling requires precise and rather expensive equipment. Controlling the constancy, i.e. the formation, of paper with such a system is problematic, and variations in basis weight may be great.
- the fiber suspension cationic auxiliary chemicals which may also be polymeric, before the adding of the cationic polyacrylamide.
- the cationic long-chain polyacrylamide is first added to the stock, which is thereafter subjected to shear forces.
- the aluminum salt is added according to the invention after the shearing stage.
- the cationic long-chain polyacrylamide in amounts which are much larger than when batching the retention agents in the conventional manner, just before web forming. Overdosage leads in the latter case even to a situation in which retention is no longer improved or to a situation in which strong flocculation deteriorates paper formation. According to the invention it is possible to use a 1-to 10-fold excess of cationic long-chain polyacrylamide as compared with normal use. The amount depends, for example, on the filler content of the pulp and on the cationic matter contained in the pulp. The amount of long-chain polyacrylamide is preferably about 0.01-0.2 % of the dry weight of the pulp.
- cationic chemicals enhance the action of the cationic long-chain polyacrylamide, since they reduce the anionic quality of the pulp suspension and prevent interfering substances from consuming the cationic long-chain polyacrylamide intended for the flocculation of the fiber suspension.
- the said cationic chemicals ensure that the shearing of the flocs in, for example, the pressure sieve or the feeding pump will result in stable microflocs in the headbox, since they contain a sufficient amount of cationic polyacrylamide and the surface charge of the microflocs is sufficiently cationic in order that they react with aluminum hydroxide particles having anionic charges.
- the amount of these cationic chemicals is preferably approx. 0.01 - 1 % of the dry weight of the pulp.
- Suitable cationic monomers include diallyldialkylammonium chlorides.
- the polymer may be either linear or cross-linked or partly cross-linked.
- cationic polyacrylamides also include the homopolymers of cationic acrylic monomers and the mixed polymers of two or more cationic monomers, at least one of the monomers being acrylic-based.
- a base is added to form aluminum hydroxide having anionic surface charges.
- the base used may be, for example, sodium or potassium hydroxide, sodium or potassium carbonate, sodium or potassium metasilicate, sodium or potassium waterglasses, sodium or potassium phosphate or borate, or sodium or potassium aluminate, or mixtures of these.
- Aluminate compounds such as sodium aluminate or potassium aluminate can also be used as the water-soluble aluminum salts.
- acid is added in order to form, within the pH range 7-9, an aluminum hydroxide having anionic surface charges.
- the acid used may be mineral acids such as sulfuric acid, hydrochloric acid, nitric acid or phosphoric acid, or organic acids such as oxalic acid, citric acid or tartaric acid.
- the acid used may also be acid aluminum salts such as aluminum sulfate, aluminum chloride, aluminum nitrate, or various water-soluble aluminum hydrophosphates.
- polyaluminum salts so-called basic aluminum salts, which are also called polyaluminum hydroxy salts or aluminum hydroxy salts.
- polyaluminum sulfate polyaluminum chloride and polyaluminum chloride sulfate.
- the polyaluminum salt may, in addition to the chloride and/or sulfate ion, also contain other anions, e.g. phosphate, polyphosphate, silicate, citrate, oxalate, or several of these.
- polymeric aluminum salts of this type include PAC (polyaluminum chloride), PAS (polyaluminum sulfate), UPAX 6 (silicate-containing polyaluminum chloride), and PASS (polyaluminum sulfate silicate).
- the net formula of the water-soluble polyaluminum salt may be, for example n[Al 2 (OH) m /Cl) 6-m ] and its alkalinity may vary so that the m-value ranges from 1 to 5 (alkalinity is respectively 16 - 83 % according to the formula (m:6) x 100). In this case the ratio Al/OH is 2:1 - 1:2.5. n is 2 or higher.
- the said base or acid which forms in situ an aluminum hydroxide with the aluminum salt may be added to the fiber suspension, for example before the adding of the cationic long-chain polyacrylamide, or just before the aluminum salt, or after it, or simultaneously with it.
- the aluminum hydroxide may also be formed before the moment of adding, for example in the adding tube, or in advance in sol form.
- the amount of the aluminum salt, calculated as Al 2 O 3 , is preferably approx. 0.01-1.0 % of the dry weight of the pulp.
- the paper pulp used may be bleached or unbleached sulfate or sulfite pulp, semichemical pulp, refiner mechanical pulp, groundwood pulp, or mixtures of these. If a filler is present, it is preferably ground or precipitated calcium carbonate, but also other fillers such as kaolin, talc or titanium oxide are possible.
- the pH is approx. 8-8.5, normally approx. 8 when a polyaluminum salt + CaCo 3 or alum + a base are used (the Al:OH ratio being approx. 4.5).
- the polyacrylamides A and B in the examples are copolymers of acrylamide and methyl-chloride quaternized dimethylaminoethyl acrylate. Their charge densities and molecular weights are (A) 1 mequiv./g:7 ⁇ 10 6 and (B) 1.5 mequiv./g:6 ⁇ 10 6 .
- This example shows that the process according to the invention improves retention in a paper pulp which contains a cationic pulp starch.
- the pulp composition is in other respects similar to that in the previous example.
- the test series was performed in a Britt Dynamic Drainage Jar.
- the batching methods comply with the methods described in Example 1.
- the degree of substitution of the cationic starch was 0.035.
- the starch was added 15 min before the polyacrylamide, and the NaOH for preliminary alkalization 5 min before the polyacrylamide.
- the same polyacrylamides A and B were used as in Example 1. Test No.
- the aluminum salt used was aluminum sulfate or a polyaluminum chloride product.
- the chemical formula of polyaluminum chloride (PAC) is Al n (OH) m Cl (3n-m) . It is made up of a number of aluminum nuclei. The pulp was similar to that in the previous examples.
- the polyaluminum chloride was batched in a manner similar to that of aluminum sulfate. The difference was that the pre-alkalization was omitted.
- the ratio OH:Al in the following table indicates, in addition to the degree of pre-alkalization, also the alkalinity of the polyaluminum product.
- the polyacrylamide used was the same polyacrylamide A as in Example 1.
- the batching methods were as in Example 1.
- Test No. Polymer/ batch kg/t Aluminum source 1:Al sulfate 2:PAC kg/t OH:Al Ash retention %
- Batching method 1 0.3 59 I 2 1.0 57 IV 3 1.0 1/10 4.5 81 II (according to invention) 4 1.0 2/5.5 1.3 79 III (according to invention) 5 1.0 2/5.1 2 84 III (according to invention)
- the process according to the invention works also when polyaluminum chloride (PAC) is used as the fixing agent before the polyacrylamide.
- the test conditions are similar to those in Example 4, except that, instead of a quaternary polymer (QPOL), the polyaluminum chloride product used in Example 3 was batched.
- the batching method was according to Example 3. Test No. Polymer/ batch kg/t Aluminum sulfate kg/t OH:Al PAC kg/t Ash retention % Batching method 1 I/1.0 10 4.5 - 52 II (according to invention) 2 I/1.0 10 4.5 2.5 63 II (according to invention)
- Compound A is a silicate-containing polyaluminum chloride and B is polyaluminum sulfate.
- Test No. Polymer/ batch g/t Aluminum salt kg/t Compound Ash retention % 1 1000 - 47 2 1000 2 A 56 3 1000 3 A 58 4 1000 5 A 71 5 1000 2.5 B 74 6 1000 5.0 B 77
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Making Paper Articles (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Electronic Switches (AREA)
- Vending Machines For Individual Products (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Claims (9)
- Ein Verfahren zur Papierherstellung, welches umfaßt:- Hinzufügen eines kationischen langkettigen Polyacrylamids zu einer wässrigen Fasersuspension, die wahlweise einen Füllstoff enthält;- Einwirkung von Scherkräften auf die genannte Polyacrylamid enthaltende Suspension;- und danach Zusatz eines polymeren Aluminiumsalzes oder eines Aluminiumsalzes zu dieser Suspension, und, falls notwendig, eine Base oder eine Säure, derartig, daß der pH im Bereich von 7 bis 9 liegt, worauf Aluminiumhydroxypartikel mit anionischen Oberflächenladungen in situ gebildet werden;- und direkt danach das Erzeugen einer Papierbahn aus der Suspension, wobei die Suspension während des papierbahnbildenden Schrittes entwässert wird,wobei das genannte Polyacrylamid und Aluminiumsalz Hilfsstoffe sind, um die Retention und/oder das Entwässern zu verbessern.
- Ein Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die genannte Fasersuspension zusätzlich einen oder mehrere kationische Hilfsstoffe enthalten kann, die entweder Trockenfestigkeitsmittel sein können, wie kationische Stärke, Naßfestigkeitsmittel, wie Polyamidin-Epichlorhydrinharz, und / oder Stoffe, wie Polyethylenimin oder quaternäre Polyamine oder Alaun, welche Störstoffe neutralisieren und/oder binden.
- Ein Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der genannte kationische Zusatzstoff oder die genannten kationischen Zusatzstoffe zu der genannten Fasersuspension vor dem Zusatz des kationischen langkettigen Polyacrylamids hinzugefügt werden.
- Ein Verfahren nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß das verwendete Aluminiumsalz Aluminiumsulfat, Aluminiumchlorid oder Aluminiumnitrat ist, in welchem Fall eine Base zu der Fasersuspension hinzugefügt wird, um in situ ein Aluminiumhydroxid mit anionischen Oberflächenladungen zu erzeugen.
- Ein Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Base in einer derartigen Menge zugesetzt wird, daß das molare Verhältnis Al/OH im Bereich von ca. 1:2-1:5 liegt, vorzugsweise von ca. 1:3.
- Ein Verfahren nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß das verwendete polymere Aluminiumsalz ein wasserlöslicher Polyaluminiumhydroxy-Komplex mit Sulfat und/oder Chlorid ist.
- Ein Verfahren nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß das verwendete polymere Aluminiumsalz ein wasserlöslicher Polyaluminiumhydroxy-Komplex mit Sulfat und / oder Chlorid ist, wobei der Komplex zusätzlich zu einem Sulfat- und/oder Chlorid-Anion auch weitere Anionen enthält, wie z.B. Phosphat, Silicat, Oxalat oder Citrat.
- Ein Verfahren nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß zu der Fasersuspension das genannte kationische langkettige Polyacrylamid in einer Menge von ca. 0,01-0,2 % des Trockengewichts der Fasermasse hinzugefügt wird.
- Ein Verfahren nach einem der vorgenannten Ansprüche, dadurch gekennzeichnet, daß zu der Fasersuspension das genannte polymere Aluminiumsalz oder das genannte Aluminiumsalz hinzugefügt wird, berechnet als Al2O3, in einer Menge von ca. 0,01-1,0 % des Trockengewichts der Fasermasse.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI920246A FI920246A0 (fi) | 1992-01-20 | 1992-01-20 | Foerfarande foer tillverkning av papper. |
FI920246 | 1992-01-20 | ||
PCT/FI1993/000019 WO1993014263A1 (en) | 1992-01-20 | 1993-01-20 | Process for producing paper |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0700473A1 EP0700473A1 (de) | 1996-03-13 |
EP0700473B1 true EP0700473B1 (de) | 2000-04-05 |
EP0700473B2 EP0700473B2 (de) | 2003-01-22 |
Family
ID=8534094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93902274A Expired - Lifetime EP0700473B2 (de) | 1992-01-20 | 1993-01-20 | Verfahren zur papierherstellung |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0700473B2 (de) |
JP (1) | JP3138475B2 (de) |
AT (1) | ATE191524T1 (de) |
AU (1) | AU660066B2 (de) |
CA (1) | CA2127992A1 (de) |
DE (1) | DE69328311T3 (de) |
ES (1) | ES2146609T5 (de) |
FI (2) | FI920246A0 (de) |
PT (1) | PT700473E (de) |
WO (1) | WO1993014263A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8157962B2 (en) | 2006-12-21 | 2012-04-17 | Akzo Nobel N.V. | Process for the production of cellulosic product |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5707494A (en) * | 1994-03-14 | 1998-01-13 | E. I. Du Pont De Nemours And Company | Process for preparing water soluble polyaluminosilicates |
JP2000352386A (ja) | 1999-06-08 | 2000-12-19 | Mitsubishi Heavy Ind Ltd | スクロール圧縮機 |
DE102004063005A1 (de) * | 2004-12-22 | 2006-07-13 | Basf Ag | Verfahren zur Herstellung von Papier, Pappe und Karton |
JP4626374B2 (ja) * | 2005-04-20 | 2011-02-09 | 栗田工業株式会社 | 製紙方法および製紙用添加剤 |
WO2018144309A1 (en) | 2017-01-31 | 2018-08-09 | Kimberly-Clark Worldwide, Inc. | High bulk tissue comprising cross-linked fibers |
EP4096483A4 (de) | 2020-01-30 | 2024-01-17 | Kimberly-Clark Worldwide, Inc. | Gewebeprodukte mit vernetzten fasern |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5512868A (en) † | 1978-07-12 | 1980-01-29 | Mitsubishi Paper Mills Ltd | Production of neutral paper |
JPH0611956B2 (ja) † | 1985-11-21 | 1994-02-16 | 星光化学工業株式会社 | 填料の歩留り向上方法 |
GB8602121D0 (en) * | 1986-01-29 | 1986-03-05 | Allied Colloids Ltd | Paper & paper board |
SE8701252D0 (sv) † | 1987-03-03 | 1987-03-25 | Eka Nobel Ab | Sett vid framstellning av papper |
US4927498A (en) † | 1988-01-13 | 1990-05-22 | E. I. Du Pont De Nemours And Company | Retention and drainage aid for papermaking |
SE8903752D0 (sv) * | 1989-11-09 | 1989-11-09 | Eka Nobel Ab | Foerfarande foer framstaellning av papper |
-
1992
- 1992-01-20 FI FI920246A patent/FI920246A0/fi not_active Application Discontinuation
-
1993
- 1993-01-20 PT PT93902274T patent/PT700473E/pt unknown
- 1993-01-20 DE DE69328311T patent/DE69328311T3/de not_active Expired - Fee Related
- 1993-01-20 EP EP93902274A patent/EP0700473B2/de not_active Expired - Lifetime
- 1993-01-20 WO PCT/FI1993/000019 patent/WO1993014263A1/en active IP Right Grant
- 1993-01-20 ES ES93902274T patent/ES2146609T5/es not_active Expired - Lifetime
- 1993-01-20 AU AU33541/93A patent/AU660066B2/en not_active Ceased
- 1993-01-20 CA CA002127992A patent/CA2127992A1/en not_active Abandoned
- 1993-01-20 JP JP05512177A patent/JP3138475B2/ja not_active Expired - Fee Related
- 1993-01-20 AT AT93902274T patent/ATE191524T1/de not_active IP Right Cessation
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1994
- 1994-07-19 FI FI943425A patent/FI943425A0/fi not_active Application Discontinuation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8157962B2 (en) | 2006-12-21 | 2012-04-17 | Akzo Nobel N.V. | Process for the production of cellulosic product |
Also Published As
Publication number | Publication date |
---|---|
AU3354193A (en) | 1993-08-03 |
WO1993014263A1 (en) | 1993-07-22 |
ES2146609T5 (es) | 2003-07-01 |
AU660066B2 (en) | 1995-06-08 |
PT700473E (pt) | 2000-07-31 |
CA2127992A1 (en) | 1993-07-22 |
DE69328311T3 (de) | 2003-07-31 |
FI943425A (fi) | 1994-07-19 |
ATE191524T1 (de) | 2000-04-15 |
FI920246A0 (fi) | 1992-01-20 |
FI943425A0 (fi) | 1994-07-19 |
JP3138475B2 (ja) | 2001-02-26 |
DE69328311D1 (de) | 2000-05-11 |
DE69328311T2 (de) | 2000-08-10 |
EP0700473B2 (de) | 2003-01-22 |
ES2146609T3 (es) | 2000-08-16 |
JPH07502791A (ja) | 1995-03-23 |
EP0700473A1 (de) | 1996-03-13 |
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