NO319410B1 - Fremgangsmate for a hindre eller forsinke opplosning av kalsiumkarbonat i et papirfremstillingssystem, fremgangsmate for fremstilling av papir eller kartong i et slikt system, og anvendelse av karbondioksid ved fremgangsmatene - Google Patents
Fremgangsmate for a hindre eller forsinke opplosning av kalsiumkarbonat i et papirfremstillingssystem, fremgangsmate for fremstilling av papir eller kartong i et slikt system, og anvendelse av karbondioksid ved fremgangsmatene Download PDFInfo
- Publication number
- NO319410B1 NO319410B1 NO20004319A NO20004319A NO319410B1 NO 319410 B1 NO319410 B1 NO 319410B1 NO 20004319 A NO20004319 A NO 20004319A NO 20004319 A NO20004319 A NO 20004319A NO 319410 B1 NO319410 B1 NO 319410B1
- Authority
- NO
- Norway
- Prior art keywords
- calcium carbonate
- carbon dioxide
- pulp
- pulp suspension
- paper
- Prior art date
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 348
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 234
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 172
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 120
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 92
- 230000008569 process Effects 0.000 title claims abstract description 50
- 238000004090 dissolution Methods 0.000 title claims abstract description 34
- 239000011111 cardboard Substances 0.000 title claims description 6
- 239000011087 paperboard Substances 0.000 title claims description 6
- 239000000725 suspension Substances 0.000 claims abstract description 96
- 239000000945 filler Substances 0.000 claims abstract description 31
- 239000007787 solid Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 239000000049 pigment Substances 0.000 claims abstract description 12
- 229920001131 Pulp (paper) Polymers 0.000 claims description 45
- 239000000123 paper Substances 0.000 claims description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 230000002378 acidificating effect Effects 0.000 claims description 25
- 239000000835 fiber Substances 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 16
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 12
- 229910001424 calcium ion Inorganic materials 0.000 claims description 12
- 230000007935 neutral effect Effects 0.000 claims description 9
- 239000010893 paper waste Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000004061 bleaching Methods 0.000 claims description 5
- 239000002761 deinking Substances 0.000 claims description 5
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 2
- 238000007865 diluting Methods 0.000 claims 1
- 235000010216 calcium carbonate Nutrition 0.000 description 129
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 22
- 238000007792 addition Methods 0.000 description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- 230000000694 effects Effects 0.000 description 10
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 9
- 229910052791 calcium Inorganic materials 0.000 description 9
- 239000011575 calcium Substances 0.000 description 9
- 238000005187 foaming Methods 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 7
- 239000002002 slurry Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000007844 bleaching agent Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000012632 extractable Substances 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- 229940037003 alum Drugs 0.000 description 4
- 159000000007 calcium salts Chemical class 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 238000010494 dissociation reaction Methods 0.000 description 4
- 230000005593 dissociations Effects 0.000 description 4
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical compound OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 description 4
- 230000020477 pH reduction Effects 0.000 description 4
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004537 pulping Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- 102000011045 Chloride Channels Human genes 0.000 description 1
- 108010062745 Chloride Channels Proteins 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000002699 waste material 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
- 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
- D21H23/08—Controlling the addition by measuring pulp properties, e.g. zeta potential, pH
- D21H23/10—Controlling the addition by measuring pulp properties, e.g. zeta potential, pH at least two kinds of compounds being added
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
- D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
- D21C9/004—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives inorganic compounds
-
- 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
- D21H17/65—Acid compounds
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Polarising Elements (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Electroluminescent Light Sources (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI980478A FI103520B (fi) | 1998-03-03 | 1998-03-03 | Parannetut paperinvalmistusmenetelmät |
| PCT/FI1998/000558 WO1999035333A1 (fr) | 1998-03-03 | 1998-06-25 | Procedes ameliores de fabrication du papier |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO20004319D0 NO20004319D0 (no) | 2000-08-30 |
| NO20004319L NO20004319L (no) | 2000-08-30 |
| NO319410B1 true NO319410B1 (no) | 2005-08-08 |
Family
ID=8551099
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO20004319A NO319410B1 (no) | 1998-03-03 | 2000-08-30 | Fremgangsmate for a hindre eller forsinke opplosning av kalsiumkarbonat i et papirfremstillingssystem, fremgangsmate for fremstilling av papir eller kartong i et slikt system, og anvendelse av karbondioksid ved fremgangsmatene |
| NO20004318A NO319409B1 (no) | 1998-03-03 | 2000-08-30 | Fremgangsmate for a hindre eller forsinke opplosning av kalsiumkarbonat i et papirfremstillingssystem, fremgangsmate for fremstilling av papir eller kartong i et slikt system, og anvendelse av karbondioksid ved fremgangsmaten |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO20004318A NO319409B1 (no) | 1998-03-03 | 2000-08-30 | Fremgangsmate for a hindre eller forsinke opplosning av kalsiumkarbonat i et papirfremstillingssystem, fremgangsmate for fremstilling av papir eller kartong i et slikt system, og anvendelse av karbondioksid ved fremgangsmaten |
Country Status (13)
| Country | Link |
|---|---|
| US (2) | US6540870B1 (fr) |
| EP (2) | EP0981665B1 (fr) |
| JP (2) | JP2002509992A (fr) |
| AT (2) | ATE211199T1 (fr) |
| AU (2) | AU741940B2 (fr) |
| CA (2) | CA2319180C (fr) |
| DE (2) | DE69803058T2 (fr) |
| ES (2) | ES2169528T3 (fr) |
| FI (1) | FI103520B (fr) |
| ID (2) | ID26253A (fr) |
| NO (2) | NO319410B1 (fr) |
| PT (2) | PT981665E (fr) |
| WO (2) | WO1999035333A1 (fr) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6228161B1 (en) * | 1996-12-30 | 2001-05-08 | Minerals Technologies Inc. | Use of calcium carbonate in an acidic aqueous media |
| FR2787802B1 (fr) * | 1998-12-24 | 2001-02-02 | Pluss Stauffer Ag | Nouvelle charge ou pigment ou mineral traite pour papier, notamment pigment contenant du caco3 naturel, son procede de fabrication, compositions les contenant, et leurs applications |
| FI104003B (fi) * | 1999-02-08 | 1999-10-29 | Aga Ab | Stabiloitu täyteaine, sen valmistus ja käyttö |
| FI991241A (fi) * | 1999-06-01 | 2000-12-02 | Aga Ab | Ligniinin valkaisu ja menetelmä paperin valmistamiseksi |
| US7056419B2 (en) * | 2002-09-30 | 2006-06-06 | American Air Liquide, Inc. | Methods for modifying electrical properties of papermaking compositions using carbon dioxide |
| US20040256069A1 (en) * | 2003-06-18 | 2004-12-23 | Saucedo Victor M. | Estimation and control in the wet end using CO2 |
| CN100396849C (zh) * | 2003-06-18 | 2008-06-25 | 液体空气乔治洛德方法利用和研究的具有监督和管理委员会的有限公司 | Co2在造纸工艺湿部中的受控添加 |
| US7169257B2 (en) * | 2003-11-12 | 2007-01-30 | Kemira Chemicals, Inc. | Method of deinking waste paper using a reduced alkali system |
| FI20055234L (fi) | 2005-05-18 | 2006-11-19 | Linde Ag | Menetelmä kierrätyskuitujen siistaamiseksi ja hapon käyttö siistauksessa |
| US7862685B2 (en) | 2006-01-09 | 2011-01-04 | Kemira Chemicals, Inc. | Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles |
| US7897010B2 (en) | 2006-01-09 | 2011-03-01 | Kemira Chemicals, Inc. | Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles |
| JP4801478B2 (ja) * | 2006-03-27 | 2011-10-26 | 日本製紙株式会社 | ブロークパルプの処理方法 |
| CA2547276A1 (fr) * | 2006-05-19 | 2007-11-19 | Abitibi-Consolidated Inc. | Papier de pate mecanique couche |
| FI20060670A0 (fi) | 2006-07-10 | 2006-07-10 | Mikko Kaira | Menetelmä kuitutuotteen bulkin lisäämiseksi ja muodostettu kuitutuote |
| FI20065727A0 (fi) | 2006-11-15 | 2006-11-15 | Linde Ag | Menetelmä kerrostuman muodostumisen vähentämiseksi sellu- ja paperiteollisuudessa |
| FI20075503L (fi) * | 2007-07-03 | 2008-06-19 | Stora Enso Oyj | Menetelmä paperin valmistamiseksi ja happo/emäskäsittelyn käyttö paperin valmistuksessa |
| FI20085797L (fi) * | 2008-08-27 | 2010-02-28 | Linde Ag | Menetelmä puskuriliuoksen valmistamiseksi paperinvalmistusprosessissa |
| US8808503B2 (en) * | 2009-02-02 | 2014-08-19 | John Klungness | Fiber loading improvements in papermaking |
| US8317973B2 (en) | 2009-11-11 | 2012-11-27 | Kemira Chemical, Inc. | Polyester surfactants for deinking |
| FI124831B (fi) * | 2010-03-10 | 2015-02-13 | Upm Kymmene Oyj | Menetelmä ja reaktori kalsiumkarbonaatin in-line-valmistamiseksi paperimassavirtaukseen |
| FI125826B (fi) * | 2010-08-04 | 2016-02-29 | Nordkalk Oy Ab | Menetelmä paperin tai kartongin valmistamiseksi |
| JP6084228B2 (ja) * | 2011-10-25 | 2017-02-22 | ピュラック バイオケム ビー． ブイ． | リグノセルロース物質を有機酸に転化する方法 |
| US10041211B2 (en) | 2014-07-11 | 2018-08-07 | Stora Enso Oyj | Method of increasing the filler content in paper or paperboard |
| SE539960C2 (en) * | 2016-04-11 | 2018-02-13 | Stora Enso Oyj | Method of forming an aqueous solution comprising microfibrillated cellulose by releasing microfibrillated cellulose from a dried composite material |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US199365A (en) * | 1878-01-22 | Improvement in watch-guard tips | ||
| US1993265A (en) * | 1933-02-28 | 1935-03-05 | Merrimac Chemical Co Inc | Manufacture of paper embodying alkaline earth metal carbonate fillers |
| US2114809A (en) | 1934-07-06 | 1938-04-19 | West Virginia Pulp & Paper Com | Method of producing sized papers |
| DE2752413C2 (de) * | 1977-11-24 | 1979-03-29 | J.M. Voith Gmbh, 7920 Heidenheim | Verfahren zur Aufhärtung des Wassers bei der Altpapieraufbereitung und Vorrichtung zur Durchführung des Verfahrens |
| DE3773204D1 (fr) | 1986-12-22 | 1991-10-24 | Aga Ab, Lidingoe, Se | |
| SE8605510L (sv) | 1986-12-22 | 1987-09-17 | Aga Ab | Sett vid tvettning av massa |
| AU1175188A (en) | 1987-02-27 | 1988-09-01 | Boc Group, Inc., The | Use of gaseous carbon dioxide to adjust ph of cellulosic pulp |
| SE461860B (sv) * | 1989-02-13 | 1990-04-02 | Mo Och Domsjoe Ab | Foerfarande foer framstaellning av papper och bestruket papper varvid baspappret innehaaller precipiterat kalciumkarbonat |
| US5043017A (en) | 1990-03-09 | 1991-08-27 | Pfizer Inc. | Acid-stabilized calcium carbonate, process for its production and method for its use in the manufacture of acidic paper |
| US5156719A (en) | 1990-03-09 | 1992-10-20 | Pfizer Inc. | Acid-stabilized calcium carbonate, process for its production and method for its use in the manufacture of acidic paper |
| US5223090A (en) * | 1991-03-06 | 1993-06-29 | The United States Of America As Represented By The Secretary Of Agriculture | Method for fiber loading a chemical compound |
| WO1992021613A1 (fr) * | 1991-06-04 | 1992-12-10 | Minerals Technologies, Inc. | Particules de carbonate de calcium precipitees obtenues a partir de carbonate de calcium basique |
| CA2069713C (fr) | 1992-05-27 | 2003-05-13 | Derek Hornsey | Utilisation de dioxyde de carbone dans des procedes de collage du papier en milieu neutre ou alcalin |
| US5505819A (en) | 1994-03-31 | 1996-04-09 | Macmillan Bloedel Limited | Neutral papermaking |
| US5679220A (en) | 1995-01-19 | 1997-10-21 | International Paper Company | Process for enhanced deposition and retention of particulate filler on papermaking fibers |
| WO1996026901A1 (fr) | 1995-02-27 | 1996-09-06 | Aeci Limited | Production de carbonate de calcium precipite |
| US5759258A (en) | 1995-03-15 | 1998-06-02 | Minerals Technologies Inc. | Recycling of mineral fillers from the residue of a paper deinking plant |
| US5647902A (en) | 1995-10-20 | 1997-07-15 | Ecc International Inc. | Stabilized calcium carbonate composition using sodium carbonate and mixtures of acids and uses therefor |
| FI100670B (fi) | 1996-02-20 | 1998-01-30 | Metsae Serla Oy | Menetelmä täyteaineen lisäämiseksi selluloosakuituperäiseen massaan |
| US6228161B1 (en) * | 1996-12-30 | 2001-05-08 | Minerals Technologies Inc. | Use of calcium carbonate in an acidic aqueous media |
| US6200416B1 (en) * | 1997-06-10 | 2001-03-13 | Praxair Technology, Inc. | Recycled paper production process which incorporates carbon dioxide |
| FI102911B1 (fi) | 1997-06-13 | 1999-03-15 | Aga Ab | Menetelmä massasuspension pH:n stabiloimiseksi ja paperin tuottamiseksi stabiloidusta massasta |
-
1998
- 1998-03-03 FI FI980478A patent/FI103520B/fi not_active IP Right Cessation
- 1998-06-25 DE DE69803058T patent/DE69803058T2/de not_active Expired - Lifetime
- 1998-06-25 ID IDW20001670A patent/ID26253A/id unknown
- 1998-06-25 JP JP2000527707A patent/JP2002509992A/ja active Pending
- 1998-06-25 AT AT98929465T patent/ATE211199T1/de active
- 1998-06-25 AU AU79215/98A patent/AU741940B2/en not_active Ceased
- 1998-06-25 US US09/462,170 patent/US6540870B1/en not_active Expired - Lifetime
- 1998-06-25 CA CA002319180A patent/CA2319180C/fr not_active Expired - Lifetime
- 1998-06-25 WO PCT/FI1998/000558 patent/WO1999035333A1/fr active IP Right Grant
- 1998-06-25 EP EP98929465A patent/EP0981665B1/fr not_active Expired - Lifetime
- 1998-06-25 ES ES98929465T patent/ES2169528T3/es not_active Expired - Lifetime
- 1998-06-25 PT PT98929465T patent/PT981665E/pt unknown
-
1999
- 1999-03-01 US US09/623,380 patent/US6623599B1/en not_active Expired - Lifetime
- 1999-03-01 ES ES99906283T patent/ES2169598T5/es not_active Expired - Lifetime
- 1999-03-01 ID IDW20001671A patent/ID27434A/id unknown
- 1999-03-01 CA CA002318072A patent/CA2318072C/fr not_active Expired - Lifetime
- 1999-03-01 DE DE69900627T patent/DE69900627T3/de not_active Expired - Lifetime
- 1999-03-01 JP JP2000534725A patent/JP2002506137A/ja active Pending
- 1999-03-01 AT AT99906283T patent/ATE211200T1/de active
- 1999-03-01 WO PCT/FI1999/000156 patent/WO1999045202A1/fr active IP Right Grant
- 1999-03-01 AU AU26270/99A patent/AU744905B2/en not_active Expired
- 1999-03-01 EP EP99906283A patent/EP0986671B2/fr not_active Expired - Lifetime
- 1999-03-01 PT PT99906283T patent/PT986671E/pt unknown
-
2000
- 2000-08-30 NO NO20004319A patent/NO319410B1/no not_active IP Right Cessation
- 2000-08-30 NO NO20004318A patent/NO319409B1/no not_active IP Right Cessation
Also Published As
Similar Documents
| Publication | Publication Date | Title |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CB | Opposition filed (par. 26,5 patents act) |
Opponent name: YARA INTERNATIONAL ASA, POSTBOKS 2464 SOLLI, OSLO, Effective date: 20060505 |
|
| MK1K | Patent expired |