EP0285487B1 - Perfectionnement aux procédés de fabrication du papier - Google Patents
Perfectionnement aux procédés de fabrication du papier Download PDFInfo
- Publication number
- EP0285487B1 EP0285487B1 EP19880400618 EP88400618A EP0285487B1 EP 0285487 B1 EP0285487 B1 EP 0285487B1 EP 19880400618 EP19880400618 EP 19880400618 EP 88400618 A EP88400618 A EP 88400618A EP 0285487 B1 EP0285487 B1 EP 0285487B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parts
- process according
- paper
- less
- products
- 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
- 230000008569 process Effects 0.000 title claims abstract description 14
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 20
- 229920003043 Cellulose fiber Polymers 0.000 claims abstract description 16
- 239000000725 suspension Substances 0.000 claims abstract description 16
- 229920002472 Starch Polymers 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- 239000008107 starch Substances 0.000 claims abstract description 12
- 235000019698 starch Nutrition 0.000 claims abstract description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 10
- 125000002091 cationic group Chemical group 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims abstract description 5
- 238000004513 sizing Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 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
- 229920002401 polyacrylamide Polymers 0.000 claims description 6
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 150000001735 carboxylic acids Chemical class 0.000 claims description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 2
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 2
- 150000008064 anhydrides Chemical class 0.000 claims description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 2
- -1 poly(ethylenediamine) Polymers 0.000 claims 2
- 239000011256 inorganic filler Substances 0.000 claims 1
- 229910003475 inorganic filler Inorganic materials 0.000 claims 1
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 26
- 239000000123 paper Substances 0.000 description 24
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 16
- 230000014759 maintenance of location Effects 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- 239000000835 fiber Substances 0.000 description 8
- 239000007767 bonding agent Substances 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000012764 mineral filler Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000007900 aqueous suspension Substances 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 229920002873 Polyethylenimine Polymers 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- 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
- 241001644893 Entandrophragma utile Species 0.000 description 1
- 229920001131 Pulp (paper) Polymers 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
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- DZUHNVFSJJSSOM-UHFFFAOYSA-K aluminum chlorosulfate Chemical compound [Al+3].[O-]S(Cl)(=O)=O.[O-]S(Cl)(=O)=O.[O-]S(Cl)(=O)=O DZUHNVFSJJSSOM-UHFFFAOYSA-K 0.000 description 1
- 229940045713 antineoplastic alkylating drug ethylene imines Drugs 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- XTHPWXDJESJLNJ-UHFFFAOYSA-M chlorosulfate Chemical compound [O-]S(Cl)(=O)=O XTHPWXDJESJLNJ-UHFFFAOYSA-M 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- LRCFXGAMWKDGLA-UHFFFAOYSA-N dioxosilane;hydrate Chemical compound O.O=[Si]=O LRCFXGAMWKDGLA-UHFFFAOYSA-N 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
- D21H23/765—Addition of all compounds to the pulp
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
- D21H17/15—Polycarboxylic acids, e.g. maleic acid
- D21H17/16—Addition products thereof with hydrocarbons
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/17—Ketenes, e.g. ketene dimers
-
- 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
- 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
- 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
- D21H17/675—Oxides, hydroxides or carbonates
Definitions
- the present invention relates to a process for making paper.
- the raw paper pulp consisting essentially of cellulose fibers is put in the form of a dilute aqueous suspension which is brought into the headbox of the paper machine from where it is distributed on a filter cloth on which the sheet is formed. of paper. This sheet is then wrung and dried.
- the qualities and properties of the paper obtained are determined in particular by the operating conditions of the paper machine, the raw pulp, the various additives that are added to the suspension before the sheet is formed and also the products that are coated. on the sheet of paper after the filter cloth.
- the present invention relates more particularly to the products which are added before the sheet is formed.
- mineral fillers such as calcium carbonate, titanium dioxide, etc. These fillers make the sheet of paper opaque which facilitates writing and printing.
- a bonding agent is also added to make the sheet resistant to liquids, that is to say that the bonded sheet of paper can be used for writing and printing. It is also necessary to add a retentive system which precipitates the bonding agent on the cellulose fibers and which also allows the retention of mineral fillers in the paper sheet.
- the retentive system is often a mixture of several products. We also add products to improve the mechanical qualities of paper, dyes, etc.
- the patent application under Japanese priority 85 JP 031519 of February 21, 1985 speaks of a collage in a neutral medium.
- the filler is calcium carbonate, poly aluminum chloride and a high molecular weight retention agent are added.
- Patent GB 2 015 614 describes processes for manufacturing paper and cardboard in which a basic aluminum polychlorosulfate is added to the suspension before the sheet is formed. But either one does not stick, or one uses collophane, and one knows that the rosin must be used in acid medium, see KIRK OTHMER already quoted, page 810.
- the suspension containing the cellulose fibers can be raw or bleached pulp, or a mixture of raw pulp and bleached pulp, or a pulp already containing additives.
- the mineral filler can be any one or more products, preferably chosen from clay, calcium carbonate, silica, hydrated alumina, talc, titanium dioxide, etc.
- These products are introduced in finely divided form or in the form of a paste or solution in the suspension. It is preferred to use calcium carbonate.
- the amount of carbonate can be any, and often is at most 40 parts per 100 parts of cellulose fibers, and preferably between 10 and 25. This quantity does not take not taking into account the charges contained in the recycled paper at the start of production in the suspension.
- any bonding agent can be used, an agent which is used in a neutral environment is preferred.
- the sizing agent can be a mixture of one or more products chosen from dimeric ketene alkyls and their derivatives, fluorinated phosphates, anhydrides of fatty chain carboxylic acids, certain polyurethanes, styrene maleic anhydride copolymers.
- dimeric ketene alkyls and carboxylic acid anhydrides are preferred.
- the quantity to be used depends on the desired properties of the paper.
- the amount is less than 10 parts per 100 parts of cellulose fibers, and preferably between 0.1 and 2 parts.
- Cationic starch is a mixture of one or more products marketed under the generic name of cationic starch. These products are for example those described in KIRK OTHMER, 3rd edition, Vol. 21 page 503. The quantity is advantageously less than 5 parts per 100 parts of cellulose fibers and preferably less than 2.
- the quantity of polychloride of aluminum to be used expressed in Al2O3 is advantageously less than 0.5 parts per 100 parts of cellulose fibers and preferably between 0.05 and 0.2 parts.
- the products a to d are added separately or as a mixture, or partially mixed and in any order. However, it is preferable to add poly aluminum chloride after the others. It is also preferred that the poly aluminum chloride be added as close as possible to the headbox. Cationic starch and polychloride of aluminum are not qualified as retentive systems; as we have indicated above all the products added to the suspension before the formation of the paper sheet act together.
- the present invention consists in adding the products a to d in the suspension and the Applicant has found that the joint use of these products has numerous advantages. The present invention is particularly useful for the manufacture of paper bonded in a neutral medium. The process of the present invention makes it possible to load the paper with products sensitive to acids such as calcium carbonate.
- Another advantage of the invention is good retention of the charges and consequently a large reduction in the suspended matter in the waters obtained during the formation of the sheet.
- Another advantage of the invention is greater productivity of the paper machine and better internal cohesion. All these advantages will appear in the examples.
- products a to d can be added in addition to one or more products chosen from polyacrylamides, poly (ethyleneimines), carboxymethylcellulose, urea-formaldehyde resins, melamine-formaldehyde resins, aminopolyamide-epichlorohydrin resins, polyamide-epichlorohydrin resins.
- these products are used in addition to the cationic starch and in the same quantities.
- the internal cohesion measured by the so-called "pendulum” device, is 87.
- the pendulum device used is the INTERNAL BOND IMPACT TESTER MODEL B supplied by GCA / PRECISION SCIENTIFIC, 3737 W. Cortland street, CHICAGO, USA.
- the pH of the suspension during the formation of the sheet is 7.4.
- the suspended solids (MES) in the clarified return waters are 170 mg / l.
- Example 2 The procedure is as in Example 1, but instead of poly (ethyleneimine), an aluminum polychloride of formula (II) is added in an amount of 0.1 part (expressed as Al2O3) per 100 parts of cellulose fibers.
- an aluminum polychloride of formula (II) is added in an amount of 0.1 part (expressed as Al2O3) per 100 parts of cellulose fibers.
- a production speed of 221 m / min is then obtained, a charge retention of 86%, a total retention of 95.5%.
- the internal cohesion becomes 110, the SS in the clarified return waters 100 mg / l and the pH in the headbox 7.3.
- polychloride of aluminum keeps the medium in the pH zone compatible with the use of calcium carbonate. It provides a total retention gain of 3.5 points and charge retention of 9 points. The machine speed could be increased by 7%. The content of suspended matter in canvas water has decreased significantly. There is a gain in internal cohesion.
- Example 5 The procedure is as in Example 5 but less polyacrylamide is introduced, 100 g / T instead of 300 g / T, and a poly aluminum chloride of formula (II) is added in proportion to 0.1 part expressed as Al2O3 per 100 parts of fiber.
Landscapes
- Paper (AREA)
- Making Paper Articles (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Electronic Switches (AREA)
- Electroluminescent Light Sources (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88400618T ATE73184T1 (de) | 1987-03-23 | 1988-03-15 | Papierherstellungsverfahren. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8704003 | 1987-03-23 | ||
| FR8704003A FR2612961B1 (fr) | 1987-03-23 | 1987-03-23 | Procede de fabrication du papier par adjonction a la suspension fibreuse d'une charge minerale, d'un agent de collage, d'amidon cationique et de polychlorure d'aluminium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0285487A1 EP0285487A1 (fr) | 1988-10-05 |
| EP0285487B1 true EP0285487B1 (fr) | 1992-03-04 |
Family
ID=9349312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19880400618 Expired - Lifetime EP0285487B1 (fr) | 1987-03-23 | 1988-03-15 | Perfectionnement aux procédés de fabrication du papier |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP0285487B1 (no) |
| JP (1) | JPS63256796A (no) |
| AT (1) | ATE73184T1 (no) |
| CA (1) | CA1312708C (no) |
| DE (1) | DE3868659D1 (no) |
| DK (1) | DK170686B1 (no) |
| ES (1) | ES2029522T3 (no) |
| FI (1) | FI94972C (no) |
| FR (1) | FR2612961B1 (no) |
| GR (1) | GR3004804T3 (no) |
| IE (1) | IE60052B1 (no) |
| NO (1) | NO173887C (no) |
| PT (1) | PT87044B (no) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02293493A (ja) * | 1989-04-28 | 1990-12-04 | Arakawa Chem Ind Co Ltd | ケテンダイマー系製紙用サイズ剤 |
| JPH10502134A (ja) * | 1990-01-22 | 1998-02-24 | エクソン ケミカル パテンツ インコーポレイテッド | 紙製造中の泡立ちの低減 |
| TR24973A (tr) * | 1991-02-05 | 1992-09-01 | Exxon Chemical Patents Inc | KAGIT IMALINDE KÖPüKLENMENIN AZALTILMASI |
| FR2678961B1 (fr) * | 1991-07-12 | 1993-10-15 | Atochem | Procede nouveau de fabrication de papier et papier ainsi obtenu. |
| KR100256636B1 (ko) * | 1994-04-12 | 2000-05-15 | 김충섭 | 종이내 충전물의 함량을 높이고 스코트 내부결합강도를 증가시키는 종이의 제조방법 |
| IT1271003B (it) * | 1994-09-08 | 1997-05-26 | Ausimont Spa | Processo per la produzione di carta e cartone ad elevata resistenza meccanica |
| FR2732368B1 (fr) * | 1995-03-31 | 1997-06-06 | Roquette Freres | Nouveau procede de fabrication de papier |
| FR2743810B1 (fr) | 1996-01-23 | 1998-04-10 | Roquette Freres | Polysaccharides cationiques modifies, compositions pour le collage les contenant et procedes pour le collage de structures planes mettant en oeuvre ces compositions |
| RU2546721C2 (ru) * | 2012-10-12 | 2015-04-10 | ЗАО (р) "Туринский целлюлозно-бумажный завод" | Способ получения наполненной бумажной массы |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5374118A (en) * | 1976-12-09 | 1978-07-01 | Toa Gosei Chem Ind | Additives for paper making |
| FR2418297A1 (fr) * | 1978-02-27 | 1979-09-21 | Ugine Kuhlmann | Amelioration aux procedes de fabrication de papiers et de cartons |
| JPS59199900A (ja) * | 1983-04-18 | 1984-11-13 | 三菱製紙株式会社 | 中性紙 |
| IT1163643B (it) * | 1983-07-01 | 1987-04-08 | Prodeco Spa | Procedimento per la collatura di carta, in particolare in presenza di una carica sensibile ad ambiente acido |
| JPS60185899A (ja) * | 1984-03-05 | 1985-09-21 | 三菱製紙株式会社 | 中性紙 |
| SE8405260L (sv) * | 1984-10-22 | 1986-04-23 | Eka Ab | Hydrofoberingsmedel for organiska fibrer, serskilt cellulosafibrer, sett att framstella detta medel samt anvendningen av medlet for meldhydrofobering |
| ATE40429T1 (de) * | 1985-04-13 | 1989-02-15 | Chem Fab Bruehl Oppermann Gmbh | Papierleimungsmittel und ihre verwendung. |
-
1987
- 1987-03-23 FR FR8704003A patent/FR2612961B1/fr not_active Expired
-
1988
- 1988-03-08 NO NO881029A patent/NO173887C/no unknown
- 1988-03-15 DE DE8888400618T patent/DE3868659D1/de not_active Revoked
- 1988-03-15 ES ES198888400618T patent/ES2029522T3/es not_active Expired - Lifetime
- 1988-03-15 EP EP19880400618 patent/EP0285487B1/fr not_active Expired - Lifetime
- 1988-03-15 AT AT88400618T patent/ATE73184T1/de active
- 1988-03-22 DK DK154788A patent/DK170686B1/da not_active IP Right Cessation
- 1988-03-22 FI FI881369A patent/FI94972C/fi not_active IP Right Cessation
- 1988-03-22 PT PT87044A patent/PT87044B/pt not_active IP Right Cessation
- 1988-03-22 CA CA000562131A patent/CA1312708C/fr not_active Expired - Fee Related
- 1988-03-22 IE IE84288A patent/IE60052B1/en not_active IP Right Cessation
- 1988-03-23 JP JP63069224A patent/JPS63256796A/ja active Pending
-
1992
- 1992-06-04 GR GR920401145T patent/GR3004804T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2612961A1 (fr) | 1988-09-30 |
| EP0285487A1 (fr) | 1988-10-05 |
| DK154788D0 (da) | 1988-03-22 |
| NO173887B (no) | 1993-11-08 |
| FI881369A (fi) | 1988-09-24 |
| FI94972B (fi) | 1995-08-15 |
| DE3868659D1 (de) | 1992-04-09 |
| NO173887C (no) | 1994-02-16 |
| NO881029D0 (no) | 1988-03-08 |
| JPS63256796A (ja) | 1988-10-24 |
| NO881029L (no) | 1988-09-26 |
| IE880842L (en) | 1988-09-23 |
| CA1312708C (fr) | 1993-01-19 |
| FR2612961B1 (fr) | 1989-10-13 |
| PT87044A (pt) | 1988-04-01 |
| ES2029522T3 (es) | 1992-08-16 |
| PT87044B (pt) | 1992-07-31 |
| GR3004804T3 (no) | 1993-04-28 |
| FI881369A0 (fi) | 1988-03-22 |
| FI94972C (fi) | 1995-11-27 |
| DK154788A (da) | 1988-09-26 |
| ATE73184T1 (de) | 1992-03-15 |
| DK170686B1 (da) | 1995-12-04 |
| IE60052B1 (en) | 1994-05-18 |
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