EP0500770B1 - Procede de fabrication du papier - Google Patents
Procede de fabrication du papier Download PDFInfo
- Publication number
- EP0500770B1 EP0500770B1 EP91900405A EP91900405A EP0500770B1 EP 0500770 B1 EP0500770 B1 EP 0500770B1 EP 91900405 A EP91900405 A EP 91900405A EP 91900405 A EP91900405 A EP 91900405A EP 0500770 B1 EP0500770 B1 EP 0500770B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silicic acid
- polymeric silicic
- cationic
- process according
- polymeric
- 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 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 57
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 47
- 125000002091 cationic group Chemical group 0.000 claims abstract description 44
- 229920002472 Starch Polymers 0.000 claims abstract description 27
- 239000008107 starch Substances 0.000 claims abstract description 27
- 235000019698 starch Nutrition 0.000 claims abstract description 27
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 13
- 239000000725 suspension Substances 0.000 claims abstract description 10
- 229920002678 cellulose Polymers 0.000 claims abstract description 3
- 239000001913 cellulose Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 239000000377 silicon dioxide Substances 0.000 claims description 15
- 230000020477 pH reduction Effects 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 10
- 229910052681 coesite Inorganic materials 0.000 claims description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims description 8
- 229910052682 stishovite Inorganic materials 0.000 claims description 8
- 229910052905 tridymite Inorganic materials 0.000 claims description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 7
- 229920001131 Pulp (paper) Polymers 0.000 claims description 6
- 229920006317 cationic polymer Polymers 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- 125000000129 anionic group Chemical group 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 150000001768 cations Chemical class 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 abstract description 13
- 239000000123 paper Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 238000007792 addition Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 125000005624 silicic acid group Chemical class 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- -1 aluminum modified silica particles Chemical class 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000001976 improved effect Effects 0.000 description 4
- 239000003456 ion exchange resin Substances 0.000 description 4
- 229920003303 ion-exchange polymer Polymers 0.000 description 4
- 229920003043 Cellulose fiber Polymers 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 3
- 229940037003 alum Drugs 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
- 238000006116 polymerization reaction Methods 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 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 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004890 Hydrophobing Agent Substances 0.000 description 1
- 229910020284 Na2SO4.10H2O Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-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
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- AMVQGJHFDJVOOB-UHFFFAOYSA-H aluminium sulfate octadecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O AMVQGJHFDJVOOB-UHFFFAOYSA-H 0.000 description 1
- ZEMWIYASLJTEHQ-UHFFFAOYSA-J aluminum;sodium;disulfate;dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZEMWIYASLJTEHQ-UHFFFAOYSA-J 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229920001429 chelating resin Polymers 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 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
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
-
- 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
-
- 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
- D21H17/63—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 polymeric silicic acid was prepared from water glass (Na2O.3.3SiO2) which was diluted with water to an SiO2 content of 5 per cent by weight.
- the aqueous solution was ion exchanged with ion exchange resin Amberlite IR-120 to a pH of 2.3.
- the specific surface area of the obtained acid polymeric silicic acid was measured by titration according to the method given earlier and was found to be 1450 m2/g.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Polarising Elements (AREA)
Claims (9)
- Procédé de production de papier à partir d'une suspension de fibres contenant de la cellulose, et de charges éventuelles, dans lequel on ajoute à la suspension un polymère cationique et une substance minérale anionique, et la suspension est mise en forme et épaissie sur une toile métallique, procédé caractérisé en ce que l'on ajoute à la suspension de fibres un polyacrylamide cationique, un amidon cationique et un acide silicique polymère qui présente une aire spécifique d'au moins 1050 m²/g.
- Procédé conforme à la revendication 1, caractérisé en ce que l'acide silicique polymère présente une aire spécifique située dans l'intervalle allant de 1100 à 1700 m²/g.
- Procédé conforme à la revendication 1 ou 2, caractérisé en ce que l'acide silicique polymère est un acide silicique polymère que l'on a préparé par acidification d'un verre soluble d'un métal alcalin à un pH situé dans l'intervalle allant de 1,5 à 4.
- Procédé conforme à la revendication 1, 2 ou 3, caractérisé en ce que l'acide silicique polymère a été préparé par acidification au moyen d'un échangeur de cations sous forme acide.
- Procédé conforme à l'une quelconque des revendications précédentes, caractérisé en ce que l'acide silicique polymère est ajouté à raison d'au moins 0,01 g/kg (kg/t), quantité calculée en SiO₂, par rapport aux fibres sèches et aux charges éventuelles.
- Procédé conforme à la revendication 1, caractérisé en ce que le rapport pondéral de l'amidon cationique et du polyacrylamide cationique à l'acide silicique polymère, exprimé en SiO₂, vaut plus de 0,1/1.
- Procédé conforme à la revendication 1, caractérisé en ce que le rapport pondéral de l'amidon cationique au polyacrylamide cationique se situe dans l'intervalle allant de 0,5/1 à 200/1.
- Procédé conforme à la revendication 1, caractérisé en ce que l'amidon cationique est ajouté à la suspension de fibres avant le polyacrylamide cationique et l'acide silicique polymère.
- Procédé conforme à l'une quelconque des revendications précédentes, caractérisé en ce que les fibres contenues dans la suspension comprennent au moins 25% en poids de fibres provenant d'une pâte mécanique et/ou d'une pâte de fibres recyclées.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8903752A SE8903752D0 (sv) | 1989-11-09 | 1989-11-09 | Foerfarande foer framstaellning av papper |
SE8903752 | 1989-11-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0500770A1 EP0500770A1 (fr) | 1992-09-02 |
EP0500770B1 true EP0500770B1 (fr) | 1993-09-08 |
Family
ID=20377424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91900405A Expired - Lifetime EP0500770B1 (fr) | 1989-11-09 | 1990-10-24 | Procede de fabrication du papier |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0500770B1 (fr) |
JP (1) | JPH04505351A (fr) |
AT (1) | ATE94231T1 (fr) |
AU (1) | AU637850B2 (fr) |
CA (1) | CA2069308C (fr) |
DE (1) | DE69003249T2 (fr) |
ES (1) | ES2046040T3 (fr) |
FI (1) | FI100611B (fr) |
SE (1) | SE8903752D0 (fr) |
WO (1) | WO1991007543A1 (fr) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2607219B2 (ja) * | 1991-07-02 | 1997-05-07 | エカ ノーベル アクチェボラーグ | 紙の製造方法 |
JP2521651B2 (ja) * | 1991-07-02 | 1996-08-07 | エカ ノーベル アクチェボラーグ | 紙の製造方法 |
US5695609A (en) * | 1992-01-20 | 1997-12-09 | Kemira Oy | Process for producing paper |
FI920246A0 (fi) * | 1992-01-20 | 1992-01-20 | Kemira Oy | Foerfarande foer tillverkning av papper. |
US5571494A (en) * | 1995-01-20 | 1996-11-05 | J. M. Huber Corporation | Temperature-activated polysilicic acids |
US5859128A (en) * | 1997-10-30 | 1999-01-12 | E. I. Du Pont De Nemours And Company | Modified cationic starch composition for removing particles from aqueous dispersions |
US6033525A (en) * | 1997-10-30 | 2000-03-07 | Moffett; Robert Harvey | Modified cationic starch composition for removing particles from aqueous dispersions |
US5928474A (en) * | 1997-10-30 | 1999-07-27 | E. I. Du Pont De Nemours And Company | Modified starch composition for removing particles from aqueous dispersions |
DE19832241A1 (de) * | 1998-07-17 | 2000-01-27 | Stockhausen Chem Fab Gmbh | Verwendung von modifizierten Stärkeprodukten als Retentionsmittel bei der Papierherstellung |
US6083997A (en) * | 1998-07-28 | 2000-07-04 | Nalco Chemical Company | Preparation of anionic nanocomposites and their use as retention and drainage aids in papermaking |
MXPA02003881A (es) * | 1999-10-19 | 2002-10-23 | Weyerhaeuser Co | Polisacaridos modificados cationicamente. |
US6699363B2 (en) | 2001-11-13 | 2004-03-02 | E. I. Du Pont De Nemours And Company | Modified starch and process therefor |
US7955473B2 (en) | 2004-12-22 | 2011-06-07 | Akzo Nobel N.V. | Process for the production of paper |
US20060254464A1 (en) | 2005-05-16 | 2006-11-16 | Akzo Nobel N.V. | Process for the production of paper |
US8273216B2 (en) | 2005-12-30 | 2012-09-25 | Akzo Nobel N.V. | Process for the production of paper |
KR101318317B1 (ko) | 2005-12-30 | 2013-10-15 | 아크조 노벨 엔.브이. | 종이의 제조 방법 |
CA2687961A1 (fr) * | 2007-05-23 | 2008-11-27 | Akzo Nobel N.V. | Procede de production d'un produit cellulosique |
EP2711347A1 (fr) * | 2012-09-21 | 2014-03-26 | HeidelbergCement AG | Procédé et moyen destinés à préparer des agrégats |
FR2998563B1 (fr) | 2012-11-28 | 2014-12-19 | Roquette Freres | Procede d'epaississement ou de deshydratation de boues |
DE102022103082A1 (de) | 2022-02-09 | 2023-08-10 | Jan Reijnvaan | Palettenblöcke und Paletten |
DE102022103081A1 (de) | 2022-02-09 | 2023-08-10 | Jan Reijnvaan | Paletten |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0663197B2 (ja) * | 1985-11-07 | 1994-08-17 | 三菱製紙株式会社 | 中性紙の製紙方法 |
GB8621680D0 (en) * | 1986-09-09 | 1986-10-15 | Du Pont | Filler compositions |
-
1989
- 1989-11-09 SE SE8903752A patent/SE8903752D0/xx unknown
-
1990
- 1990-10-24 AT AT91900405T patent/ATE94231T1/de not_active IP Right Cessation
- 1990-10-24 AU AU67328/90A patent/AU637850B2/en not_active Expired
- 1990-10-24 WO PCT/SE1990/000688 patent/WO1991007543A1/fr active IP Right Grant
- 1990-10-24 ES ES91900405T patent/ES2046040T3/es not_active Expired - Lifetime
- 1990-10-24 DE DE91900405T patent/DE69003249T2/de not_active Expired - Lifetime
- 1990-10-24 EP EP91900405A patent/EP0500770B1/fr not_active Expired - Lifetime
- 1990-10-24 JP JP2515828A patent/JPH04505351A/ja active Pending
- 1990-10-24 CA CA002069308A patent/CA2069308C/fr not_active Expired - Lifetime
-
1992
- 1992-05-06 FI FI922055A patent/FI100611B/fi active
Also Published As
Publication number | Publication date |
---|---|
FI100611B (fi) | 1998-01-15 |
FI922055A0 (fi) | 1992-05-06 |
DE69003249T2 (de) | 1994-03-31 |
AU637850B2 (en) | 1993-06-10 |
CA2069308C (fr) | 1996-01-30 |
DE69003249D1 (de) | 1993-10-14 |
ATE94231T1 (de) | 1993-09-15 |
SE8903752D0 (sv) | 1989-11-09 |
ES2046040T3 (es) | 1994-01-16 |
FI922055A (fi) | 1992-05-06 |
EP0500770A1 (fr) | 1992-09-02 |
WO1991007543A1 (fr) | 1991-05-30 |
JPH04505351A (ja) | 1992-09-17 |
AU6732890A (en) | 1991-06-13 |
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