EP0357574B1 - Procédé de fabrication de papier - Google Patents
Procédé de fabrication de papier Download PDFInfo
- Publication number
- EP0357574B1 EP0357574B1 EP89850252A EP89850252A EP0357574B1 EP 0357574 B1 EP0357574 B1 EP 0357574B1 EP 89850252 A EP89850252 A EP 89850252A EP 89850252 A EP89850252 A EP 89850252A EP 0357574 B1 EP0357574 B1 EP 0357574B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- colloid
- process according
- aluminate
- anionic
- cationic
- 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 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000000084 colloidal system Substances 0.000 claims abstract description 41
- 125000000129 anionic group Chemical group 0.000 claims abstract description 29
- 125000002091 cationic group Chemical group 0.000 claims abstract description 24
- 150000004645 aluminates Chemical class 0.000 claims abstract description 23
- 229920001059 synthetic polymer Polymers 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 14
- 229920002678 cellulose Polymers 0.000 claims abstract description 5
- 239000001913 cellulose Substances 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 28
- 239000002245 particle Substances 0.000 claims description 16
- 239000000377 silicon dioxide Substances 0.000 claims description 12
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 6
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229920000962 poly(amidoamine) Polymers 0.000 claims description 4
- 229920000768 polyamine Polymers 0.000 claims description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims description 4
- 229920002873 Polyethylenimine Polymers 0.000 claims description 3
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 3
- -1 aluminum modified silica sol Chemical class 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 abstract description 8
- 238000007792 addition Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000000123 paper Substances 0.000 description 8
- 229920006317 cationic polymer Polymers 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910001388 sodium aluminate Inorganic materials 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 4
- 239000008119 colloidal silica Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 3
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 239000012764 mineral filler Substances 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- 229910020284 Na2SO4.10H2O Inorganic materials 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 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 2
- 239000000243 solution Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-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
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229910003202 NH4 Inorganic materials 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
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 235000012211 aluminium silicate Nutrition 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
- 230000003139 buffering effect Effects 0.000 description 1
- UHZZMRAGKVHANO-UHFFFAOYSA-M chlormequat chloride Chemical compound [Cl-].C[N+](C)(C)CCCl UHZZMRAGKVHANO-UHFFFAOYSA-M 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 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
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite 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
- D21H17/33—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
-
- 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
-
- 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
Definitions
- the amount of anionic colloid which is added to the stock should suitably be within the range of from 0.005 to 2 per cent by weight, preferably from 0.01 to 0.4 per cent by weight, based on dry cellulose fibres and optional fillers.
- the concentration of the colloid, preferably colloidal silica, in the sol added to the stock is not critical. From a practical point of view it is suitable that the sols at the addition to the stock have a concentration of from 0.05 to 5.0 per cent by weight.
- the anionic colloid was an alkali stabilized silica sol with a specific surface area of 500 m2/g.
- the cationic synthetic polymer was a cationic polyacrylamide of medium cationicity sold by Allied Colloids under the name Percol 292.
- the sodium aluminate was added in the form of a 0.025% aqueous solution and the given amounts of aluminate are expressed as kg Al2O3.
- the additions of chemicals were made to 1 l diluted stock (about 0.3%) with intervals of 15 seconds under agitation in the order aluminate, cationic polymer, inorganic colloid.
- the flocked stock was transferred to the freeness apparatus and measurements were made 15 seconds after the last addition.
- the water which is collected is a measurement of the dewatering effect and is expressed in ml Canadian Standard Freeness (CSF).
- CSF Canadian Standard Freeness
- a groundwood stock was used which did not contain any fillers.
- the cationic polymer was the same polyacrylamide as in Example 1.
- the anionic colloid was an aluminum modified, 15% alkali stabilized, silica sol where the surface of the colloidal particles had been modified with 9% aluminum atoms and the surface area of the particles was 500 m2/g.
- the order of addition was sodium aluminate, cationic polymer followed by anionic colloid. Tests were made both with a stock pH of 6 and a stock pH of 7.5 whereby the pH had been adjusted with diluted H2SO4 and diluted NaOH respectively.
- Example 3 a groundwood stock with addition of 0.5 g/1 of Na2SO4.10H2O was used as in Example 3.
- the pH of the stock was 6.5 and the added chemicals were sodium aluminate, a cationic polyethylene imine sold by BASF under the name Polymin SK and an anionic colloid which was a bentonite colloid having a specific surface area of from about 400 to 800 m2/g in water.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Making Paper Articles (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Polarising Elements (AREA)
- Electronic Switches (AREA)
Claims (10)
- Procédé pour la production du papier par formation et élimination de l'eau d'une suspension de cellulose contenant des fibres sur une toile, caractérisé en ce que la formation et l'élimination de l'eau sont effectuées en présence d'un colloïde inorganique anionique, sous la condition que le colloïde inorganique anionique ne soit pas un acide silicique polymère ayant une aire de surface spécifique d'au moins 1050 m²/g,avec un aluminate et un polymère synthétique cationique.
- Procédé selon la revendication 1, caractérisé en ce que le colloïde anionique est un colloïde à base de silice.
- Procédé selon la revendication 1 ou 2, caractérisé en ce que le colloïde est un sol de silice, un sol de silice avec des particules ayant au moins une couche superficielle de silicate d'aluminium ou un sol de silice modifié par de l'aluminium.
- Procédé selon la revendication 1, 2 ou 3, caractérisé en ce que les particules du colloïde ont une aire de surface spécifique dans la plage allant de 50 à 1000 m²/g.
- Procédé selon la revendication 3, caractérisé en ce que la taille des particules du colloïde est au plus égale à 20 nm.
- Procédé selon la revendication 1, caractérisé en ce que le polymère synthétique cationique est un polyacrylamide cationique, une polyéthylèneimine, une polyamine ou une polyamidoamine.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que l'aluminate est ajouté à la suspension fibreuse avant le colloïde inorganique anionique et le polymère synthétique cationique.
- Procédé selon l'une quelconque des revendications 1, 2, 3, 4 ou 5, caractérisé en ce que la quantité de colloïde inorganique anionique est comprise dans la plage allant de 0,005 à 2 pour cent en poids, en se fondant sur des fibres sèches ou des charges facultatives.
- Procédé selon la revendication 1 ou 6, caractérisé en ce que la quantité de polymère synthétique cationique est comprise dans la plage allant de 0,01 à 3 pour cent en poids, en se fondant sur des fibres sèches ou des charges facultatives.
- Procédé selon la revendication 1, caractérisé en ce que le rapport de poids de l'aluminate, exprimé en Al₂O₃, par rapport au colloïde inorganique anionique, est compris dans la plage allant de 0,01:1 à 3:1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89850252T ATE99010T1 (de) | 1988-09-01 | 1989-08-09 | Verfahren zur papierherstellung. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8803065 | 1988-09-01 | ||
SE8803065A SE467627B (sv) | 1988-09-01 | 1988-09-01 | Saett vid framstaellning av papper |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0357574A2 EP0357574A2 (fr) | 1990-03-07 |
EP0357574A3 EP0357574A3 (fr) | 1991-10-23 |
EP0357574B1 true EP0357574B1 (fr) | 1993-12-22 |
Family
ID=20373187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89850252A Expired - Lifetime EP0357574B1 (fr) | 1988-09-01 | 1989-08-09 | Procédé de fabrication de papier |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0357574B1 (fr) |
JP (1) | JP2521539B2 (fr) |
AT (1) | ATE99010T1 (fr) |
AU (1) | AU605997B2 (fr) |
BR (1) | BR8904283A (fr) |
CA (1) | CA1334324C (fr) |
DE (1) | DE68911626T2 (fr) |
ES (1) | ES2048323T3 (fr) |
FI (1) | FI90448C (fr) |
NO (1) | NO171567C (fr) |
NZ (1) | NZ230427A (fr) |
PT (1) | PT91611B (fr) |
SE (1) | SE467627B (fr) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4795531A (en) * | 1987-09-22 | 1989-01-03 | Nalco Chemical Company | Method for dewatering paper |
US4927498A (en) * | 1988-01-13 | 1990-05-22 | E. I. Du Pont De Nemours And Company | Retention and drainage aid for papermaking |
SE500367C2 (sv) * | 1989-11-09 | 1994-06-13 | Eka Nobel Ab | Silikasoler och förfarande för framställning av papper |
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 |
DE4437118A1 (de) * | 1994-10-05 | 1996-04-11 | Technocell Dekor Gmbh & Co Kg | Basispapier für dekorative Beschichtungssysteme |
US5846384A (en) * | 1995-06-15 | 1998-12-08 | Eka Chemicals Ab | Process for the production of paper |
SE9502184D0 (sv) * | 1995-06-15 | 1995-06-15 | Eka Nobel Ab | A process for the production of paper |
US5595630A (en) * | 1995-08-31 | 1997-01-21 | E. I. Du Pont De Nemours And Company | Process for the manufacture of paper |
SE9504081D0 (sv) * | 1995-11-15 | 1995-11-15 | Eka Nobel Ab | A process for the production of paper |
US7169261B2 (en) | 1999-05-04 | 2007-01-30 | Akzo Nobel N.V. | Silica-based sols |
NZ514752A (en) | 1999-05-04 | 2004-01-30 | Akzo Nobel Nv | Two-step alkalization process for the preparation of silica-based sols |
US6379501B1 (en) | 1999-12-14 | 2002-04-30 | Hercules Incorporated | Cellulose products and processes for preparing the same |
EP1500745A1 (fr) | 2002-04-03 | 2005-01-26 | Seiko PMC Corporation | Procede de production de papier et agent pour ameliorer le rendement d'un tel procede |
FI121119B (fi) † | 2003-04-15 | 2010-07-15 | Kemira Oyj | Menetelmä paperin valmistamiseksi |
WO2008081682A1 (fr) | 2006-12-28 | 2008-07-10 | Tokyo Kinzoku Industry Co., Lid. | Dispositif de retenue |
CN103556532B (zh) * | 2013-10-31 | 2016-01-20 | 东莞理文造纸厂有限公司 | 一种造纸用助留剂及其制备方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE8403062L (sv) * | 1984-06-07 | 1985-12-08 | Eka Ab | Forfarande vid papperstillverkning |
SE451739B (sv) * | 1985-04-03 | 1987-10-26 | Eka Nobel Ab | Papperstillverkningsforfarande och pappersprodukt varvid som avvattnings- och retentionsforbettrande kemikalie anvends katjonisk polyakrylamid och en speciell oorganisk kolloid |
SE8701252D0 (sv) * | 1987-03-03 | 1987-03-25 | Eka Nobel Ab | Sett vid framstellning av papper |
US4795531A (en) * | 1987-09-22 | 1989-01-03 | Nalco Chemical Company | Method for dewatering paper |
US4927498A (en) * | 1988-01-13 | 1990-05-22 | E. I. Du Pont De Nemours And Company | Retention and drainage aid for papermaking |
SE461156B (sv) * | 1988-05-25 | 1990-01-15 | Eka Nobel Ab | Saett foer framstaellning av papper varvid formning och avvattning aeger rum i naervaro av en aluminiumfoerening, ett katjoniskt retentionsmedel och en polymer kiselsyra |
-
1988
- 1988-09-01 SE SE8803065A patent/SE467627B/sv not_active IP Right Cessation
-
1989
- 1989-08-09 DE DE89850252T patent/DE68911626T2/de not_active Expired - Lifetime
- 1989-08-09 EP EP89850252A patent/EP0357574B1/fr not_active Expired - Lifetime
- 1989-08-09 AT AT89850252T patent/ATE99010T1/de not_active IP Right Cessation
- 1989-08-09 ES ES89850252T patent/ES2048323T3/es not_active Expired - Lifetime
- 1989-08-25 NZ NZ230427A patent/NZ230427A/en unknown
- 1989-08-25 BR BR898904283A patent/BR8904283A/pt not_active IP Right Cessation
- 1989-08-28 AU AU40840/89A patent/AU605997B2/en not_active Expired
- 1989-08-28 CA CA000609515A patent/CA1334324C/fr not_active Expired - Lifetime
- 1989-08-29 JP JP1220495A patent/JP2521539B2/ja not_active Expired - Lifetime
- 1989-08-30 FI FI894075A patent/FI90448C/fi active IP Right Grant
- 1989-08-31 NO NO893500A patent/NO171567C/no not_active IP Right Cessation
- 1989-09-01 PT PT91611A patent/PT91611B/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NO171567C (no) | 1993-03-31 |
SE8803065D0 (sv) | 1988-09-01 |
NO893500D0 (no) | 1989-08-31 |
FI894075A (fi) | 1990-03-02 |
AU605997B2 (en) | 1991-01-24 |
JP2521539B2 (ja) | 1996-08-07 |
JPH0299692A (ja) | 1990-04-11 |
PT91611A (pt) | 1990-03-30 |
PT91611B (pt) | 1995-05-31 |
NO171567B (no) | 1992-12-21 |
EP0357574A2 (fr) | 1990-03-07 |
ES2048323T3 (es) | 1994-03-16 |
DE68911626T2 (de) | 1994-04-07 |
SE467627B (sv) | 1992-08-17 |
FI90448C (fi) | 1994-02-10 |
NZ230427A (en) | 1991-06-25 |
SE8803065L (sv) | 1990-03-02 |
CA1334324C (fr) | 1995-02-14 |
DE68911626D1 (de) | 1994-02-03 |
ATE99010T1 (de) | 1994-01-15 |
NO893500L (no) | 1990-03-02 |
FI894075A0 (fi) | 1989-08-30 |
BR8904283A (pt) | 1990-04-17 |
AU4084089A (en) | 1990-03-29 |
FI90448B (fi) | 1993-10-29 |
EP0357574A3 (fr) | 1991-10-23 |
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