EP0384268A1 - Procédé pour la fixation d'impuretés dans la fabrication du papier - Google Patents

Procédé pour la fixation d'impuretés dans la fabrication du papier Download PDF

Info

Publication number: EP0384268A1
Authority: EP; European Patent Office
Prior art keywords: polymers; paper; weight; water; parts
Prior art date: 1989-02-18
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.): Granted

Application number

EP90102772A

Other languages

German (de)

English (en)

Other versions

EP0384268B1 (fr

Inventor

Hans-Georg Dr.-Dipl.-Chem. Hartan

Alfons Dr.-Dipl.-Chem. Landscheidt

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Evonik Operations GmbH

Stockhausen GmbH and Co KG

Ineos Composites IP LLC

Original Assignee

Chemische Fabrik Stockhausen GmbH

Priority date (The priority date 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 date listed.)

1989-02-18

Filing date

1990-02-13

Publication date

1990-08-29

1990-02-13 Application filed by Chemische Fabrik Stockhausen GmbH filed Critical Chemische Fabrik Stockhausen GmbH

1990-08-29 Publication of EP0384268A1 publication Critical patent/EP0384268A1/fr

1994-06-08 Application granted granted Critical

1994-06-08 Publication of EP0384268B1 publication Critical patent/EP0384268B1/fr

2010-02-13 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000000034 method Methods 0.000 title claims abstract description 16
239000012535 impurity Substances 0.000 title claims description 5
229920000642 polymer Polymers 0.000 claims abstract description 28
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 7
125000002091 cationic group Chemical group 0.000 claims abstract description 6
SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 5
NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 5
CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 4
ZWAPMFBHEQZLGK-UHFFFAOYSA-N 5-(dimethylamino)-2-methylidenepentanamide Chemical compound CN(C)CCCC(=C)C(N)=O ZWAPMFBHEQZLGK-UHFFFAOYSA-N 0.000 claims abstract 2
FLCAEMBIQVZWIF-UHFFFAOYSA-N 6-(dimethylamino)-2-methylhex-2-enamide Chemical compound CN(C)CCCC=C(C)C(N)=O FLCAEMBIQVZWIF-UHFFFAOYSA-N 0.000 claims abstract 2
239000000834 fixative Substances 0.000 claims description 12
238000004519 manufacturing process Methods 0.000 claims description 9
DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 8
239000000203 mixture Substances 0.000 claims description 8
XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 claims description 4
-1 dimethylaminopropyl Chemical group 0.000 claims description 4
KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 claims description 2
229940073608 benzyl chloride Drugs 0.000 claims description 2
RDHPKYGYEGBMSE-UHFFFAOYSA-N bromoethane Chemical compound CCBr RDHPKYGYEGBMSE-UHFFFAOYSA-N 0.000 claims description 2
IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 2
VAYGXNSJCAHWJZ-UHFFFAOYSA-N dimethyl sulfate Chemical compound COS(=O)(=O)OC VAYGXNSJCAHWJZ-UHFFFAOYSA-N 0.000 claims description 2
239000000178 monomer Substances 0.000 claims description 2
NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 claims 1
239000003795 chemical substances by application Substances 0.000 abstract description 25
239000000126 substance Substances 0.000 abstract description 12
QNIRRHUUOQAEPB-UHFFFAOYSA-N 2-(prop-2-enoylamino)butane-2-sulfonic acid Chemical compound CCC(C)(S(O)(=O)=O)NC(=O)C=C QNIRRHUUOQAEPB-UHFFFAOYSA-N 0.000 abstract 1
239000000356 contaminant Substances 0.000 description 14
230000014759 maintenance of location Effects 0.000 description 13
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
239000000243 solution Substances 0.000 description 8
239000000725 suspension Substances 0.000 description 7
239000000463 material Substances 0.000 description 6
239000000047 product Substances 0.000 description 6
238000001816 cooling Methods 0.000 description 5
230000000694 effects Effects 0.000 description 5
238000006116 polymerization reaction Methods 0.000 description 5
USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 5
238000012360 testing method Methods 0.000 description 5
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
125000000129 anionic group Chemical group 0.000 description 4
229910000019 calcium carbonate Inorganic materials 0.000 description 4
229910001873 dinitrogen Inorganic materials 0.000 description 4
239000000835 fiber Substances 0.000 description 4
239000000706 filtrate Substances 0.000 description 4
239000010893 paper waste Substances 0.000 description 4
229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 description 4
239000008399 tap water Substances 0.000 description 4
235000020679 tap water Nutrition 0.000 description 4
239000002351 wastewater Substances 0.000 description 4
229940037003 alum Drugs 0.000 description 3
230000015572 biosynthetic process Effects 0.000 description 3
239000008394 flocculating agent Substances 0.000 description 3
238000000227 grinding Methods 0.000 description 3
238000005259 measurement Methods 0.000 description 3
OEIXGLMQZVLOQX-UHFFFAOYSA-N trimethyl-[3-(prop-2-enoylamino)propyl]azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CCCNC(=O)C=C OEIXGLMQZVLOQX-UHFFFAOYSA-N 0.000 description 3
239000002023 wood Substances 0.000 description 3
229920001131 Pulp (paper) Polymers 0.000 description 2
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
229920006317 cationic polymer Polymers 0.000 description 2
NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
239000011248 coating agent Substances 0.000 description 2
238000000576 coating method Methods 0.000 description 2
238000001035 drying Methods 0.000 description 2
UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical class NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 description 2
230000002452 interceptive effect Effects 0.000 description 2
210000003097 mucus Anatomy 0.000 description 2
230000007935 neutral effect Effects 0.000 description 2
229920002401 polyacrylamide Polymers 0.000 description 2
238000012545 processing Methods 0.000 description 2
230000000717 retained effect Effects 0.000 description 2
239000007787 solid Substances 0.000 description 2
238000001179 sorption measurement Methods 0.000 description 2
UZNHKBFIBYXPDV-UHFFFAOYSA-N trimethyl-[3-(2-methylprop-2-enoylamino)propyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)NCCC[N+](C)(C)C UZNHKBFIBYXPDV-UHFFFAOYSA-N 0.000 description 2
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
229920002488 Hemicellulose Polymers 0.000 description 1
208000002430 Multiple chemical sensitivity Diseases 0.000 description 1
PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
238000009825 accumulation Methods 0.000 description 1
230000002378 acidificating effect Effects 0.000 description 1
238000013459 approach Methods 0.000 description 1
238000004061 bleaching Methods 0.000 description 1
239000007844 bleaching agent Substances 0.000 description 1
238000007664 blowing Methods 0.000 description 1
229920002678 cellulose Polymers 0.000 description 1
239000001913 cellulose Substances 0.000 description 1
230000000052 comparative effect Effects 0.000 description 1
239000000470 constituent Substances 0.000 description 1
229920001577 copolymer Polymers 0.000 description 1
238000005260 corrosion Methods 0.000 description 1
230000007797 corrosion Effects 0.000 description 1
230000003111 delayed effect Effects 0.000 description 1
238000001514 detection method Methods 0.000 description 1
230000006866 deterioration Effects 0.000 description 1
238000011161 development Methods 0.000 description 1
238000010790 dilution Methods 0.000 description 1
239000012895 dilution Substances 0.000 description 1
239000000975 dye Substances 0.000 description 1
239000003792 electrolyte Substances 0.000 description 1
238000011049 filling Methods 0.000 description 1
238000001914 filtration Methods 0.000 description 1
239000013505 freshwater Substances 0.000 description 1
150000004676 glycans Polymers 0.000 description 1
239000000416 hydrocolloid Substances 0.000 description 1
230000036039 immunity Effects 0.000 description 1
230000001771 impaired effect Effects 0.000 description 1
DNHVXYDGZKWYNU-UHFFFAOYSA-N lead;hydrate Chemical compound O.[Pb] DNHVXYDGZKWYNU-UHFFFAOYSA-N 0.000 description 1
230000005087 leaf formation Effects 0.000 description 1
229930013686 lignan Natural products 0.000 description 1
150000005692 lignans Chemical class 0.000 description 1
235000009408 lignans Nutrition 0.000 description 1
229940050176 methyl chloride Drugs 0.000 description 1
238000002156 mixing Methods 0.000 description 1
238000012544 monitoring process Methods 0.000 description 1
229920001542 oligosaccharide Polymers 0.000 description 1
150000002482 oligosaccharides Chemical class 0.000 description 1
239000002245 particle Substances 0.000 description 1
ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
239000000049 pigment Substances 0.000 description 1
150000004804 polysaccharides Polymers 0.000 description 1
230000008092 positive effect Effects 0.000 description 1
230000001376 precipitating effect Effects 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
238000004513 sizing Methods 0.000 description 1
239000002002 slurry Substances 0.000 description 1
239000011780 sodium chloride Substances 0.000 description 1
229910052938 sodium sulfate Inorganic materials 0.000 description 1
235000011152 sodium sulphate Nutrition 0.000 description 1
238000003756 stirring Methods 0.000 description 1
230000008961 swelling Effects 0.000 description 1
229920003169 water-soluble polymer Polymers 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
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
- D21H17/45—Nitrogen-containing groups
- D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- 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
- D21H21/02—Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control

Definitions

the invention relates to a method for fixing contaminants in papermaking.
the concentration of these water-soluble substances rises sharply as the water cycles become narrower.
the circulating water of the paper machine is particularly contaminated with these contaminants when wood-containing paper is produced.
the object of the invention is therefore to fix the contaminants in a simple and effective manner without having to resort to aluminum sulfate and the known and proven auxiliaries based on cationic polymers as drainage aids, retention aids and flocculants continue without impairing their effect can be used.
polymers (homo- and / or copolymers) based on quaternized dimethylaminopropyl (meth) acrylamide, which are added to the headbox and / or the circulating water, these polymers having an intrinsic viscosity of less than 150 ml / g measured in 10% by weight sodium chloride solution.
the polymers used according to the invention advantageously consist of 50 to 100% by weight of quaternized dimethylaminopropyl (meth) acrylamide and 0 to 50% by weight of acrylamide, acrylic acid, methacrylic acid, acrylamidomethylpropanesulfonic acid or from mixtures of the cationic and anionic monomers mentioned.
the dimethylaminopropyl (meth) acrylamide is quaternized with the usual known quaternizing agents, e.g. Dimethyl sulfate, dimethyl carbonate, benzyl chloride, methyl chloride or ethyl bromide.
quaternizing agents e.g. Dimethyl sulfate, dimethyl carbonate, benzyl chloride, methyl chloride or ethyl bromide.
the polymers are used in an amount of 0.05 to 1% by weight, based on the dry weight of the paper produced, in addition to the customary auxiliary in which they are added to the headbox and / or the circulation water.
the polymer according to the invention used as a fixing agent is preferably used in an amount of 0.2 to 0.8, based on the dry weight of the paper produced.
the total amount of polymer added to fix impurities can advantageously be distributed over various addition points.
the polymers used as fixatives according to the invention are preferably used in a neutral manner without the addition of aluminum sulfate. However, it is also quite possible to combine these products with Alumi Use sodium sulfate according to the pseudo-neutral driving style.
the polymers used according to the invention have a particularly advantageous effect in those paper manufacturing processes in which the water cycle is closed to more than 90%.
the final temperature of 90 ° C is reached within 5 minutes. After cooling, the product has a viscosity of 1050 mPa.s, the intrinsic viscosity is 120 ml / g.
the mixture is heated to 75 ° C. while introducing nitrogen gas. After addition of 0.6 part of potassium peroxodisulfate, the polymerization begins. The final temperature of 92 ° C is reached within 10 minutes. After cooling, the product has a viscosity of 860 mPa.s, the intrinsic viscosity is 75 ml / g.
a polydimethyldiallylammonium chloride with an intrinsic viscosity of 95 ml / g was used as the comparative polymer in the application tests.
the degree of whiteness is naturally greatest without fixative and is reduced significantly less by the fixative according to the invention than by the comparison substances.
Waste paper with a solids concentration of 4% was used. 3 g of dry substance are diluted with tap water at 20 ° dH to a volume of 300 ml. The fixative is diluted to a volume of 300 ml and added to the stock suspension. The suspension is poured three times. The drainage aid is then diluted to 400 ml and added to the suspension. This system is then poured once and drained in the Schopper-Riegler apparatus. The time for 700 ml of filtrate is determined. With the blank value, the drainage is carried out without fixative and drainage aid, with the zero value without fixative, but with drainage aid. A 25% cationic polyacrylamide is used as a drainage aid.
the outlet valve is opened for 30 seconds and the filtrate is collected.
the non-retained fine material is determined by drying. The retention is stated as a percentage of the non-retained fine material in the total fine material.
the waste paper stock with a solids concentration of 4% is diluted in an amount of 2.5 g dry to 500 ml volume with tap water.
the fixative is added in an amount of 0.4%, based on dry substance, as a 0.5% solution and stirred for 30 seconds at 500 rpm with a magnetic stirrer.
the drainage aid a 25% cationic polyacrylamide, is added in an amount of 0.03% as a 0.01% solution and stirred for a further 30 seconds.
4 liters of tap water are placed in the sheet former and made to bubble by blowing in air. Now the stock suspension is added and, after thorough mixing, suctioned off.
the cover card is placed over the sheet formed and the sheet is pulled off the screen.
the mixture is then dried in a vacuum dryer for 10 minutes and then in a drying cabinet at 110 ° C. for 5 minutes. The zero value is obtained without fixative.

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Paper (AREA)
Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Water Treatment By Sorption (AREA)
Separation Using Semi-Permeable Membranes (AREA)
Analysing Materials By The Use Of Radiation (AREA)
Surgical Instruments (AREA)

EP90102772A 1989-02-18 1990-02-13 Procédé pour la fixation d'impuretés dans la fabrication du papier Expired - Lifetime EP0384268B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3905049A DE3905049A1 (de)	1989-02-18	1989-02-18	Verfahren zur stoerstoffixierung bei der papierherstellung
DE3905049		1989-02-18

Publications (2)

Publication Number	Publication Date
EP0384268A1 true EP0384268A1 (fr)	1990-08-29
EP0384268B1 EP0384268B1 (fr)	1994-06-08

Family

ID=6374441

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP90102772A Expired - Lifetime EP0384268B1 (fr)	1989-02-18	1990-02-13	Procédé pour la fixation d'impuretés dans la fabrication du papier

Country Status (10)

Country	Link
EP (1)	EP0384268B1 (fr)
JP (1)	JP2854072B2 (fr)
AT (1)	ATE106964T1 (fr)
AU (1)	AU634208B2 (fr)
CA (1)	CA2010189C (fr)
DE (2)	DE3905049A1 (fr)
DK (1)	DK0384268T3 (fr)
ES (1)	ES2055181T3 (fr)
FI (1)	FI100117B (fr)
HU (1)	HUT53165A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1991015250A1 (fr) *	1990-03-30	1991-10-17	Medtronic, Inc.	Hydrogel amphotere pour dispositifs medicaux

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4409580A1 (de) *	1994-03-21	1995-09-28	Bayer Ag	Verfahren zur Störstoffixierung bei der Papierherstellung
JP4594656B2 (ja) *	2004-06-10	2010-12-08	油化産業株式会社	ピッチコントロール剤

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2360715A1 (fr) *	1976-08-02	1978-03-03	Rohm & Haas	Procede pour maitriser la poix dans la fabrication du papier
EP0228637A2 (fr) *	1985-12-19	1987-07-15	Chemische Fabrik Stockhausen GmbH	Copolymères d'acrylamide et de diméthylaminopropylacrylamide comme floculants et procédé de déshydratation de boues d'épuration par ces floculants

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL7308872A (fr) *	1972-07-12	1974-01-15
US4190491A (en) *	1976-08-02	1980-02-26	Rohm And Haas Company	Process for controlling pitch in papermaking
JPS5916563B2 (ja) *	1976-11-04	1984-04-16	日東化学工業株式会社	水溶性カチオン重合体の製法
AU8039982A (en) *	1981-02-17	1982-08-26	Calgon Corporation	Reducing deposition of resins in paper production
AU8040082A (en) *	1981-02-17	1982-08-26	Calgon Corporation	Reducing deposition of resins in paper production
US4391932A (en) *	1982-01-22	1983-07-05	Nalco Chemical Company	Polycationic latices of dimethylaminopropyl-acrylamide, and their use of as sludge dewatering agents and/or paper retention aids
US4444971A (en) *	1983-07-25	1984-04-24	Texaco Inc.	Acrylic and methacrylic quaternary chloromethyl ammonium chloride cationic monomers and polymers thereof
DE3620065A1 (de) *	1986-06-14	1987-12-17	Basf Ag	Verfahren zur herstellung von papier, pappe und karton
DE3627407C2 (de) *	1986-08-13	1994-05-19	Steinbeis Temming Papier Gmbh	Verfahren zur Reinigung von Wasserkreisläufen bei der Halbstoff- und Papierherstellung
DE3704173A1 (de) *	1987-02-11	1988-08-25	Wolff Walsrode Ag	Neue mittel fuer die papierherstellung
JPS6461595A (en) *	1987-08-28	1989-03-08	Sanyo Chemical Ind Ltd	Papermaking filterability enhancer

1989
- 1989-02-18 DE DE3905049A patent/DE3905049A1/de not_active Withdrawn
1990
- 1990-02-13 DK DK90102772.2T patent/DK0384268T3/da active
- 1990-02-13 AT AT90102772T patent/ATE106964T1/de not_active IP Right Cessation
- 1990-02-13 EP EP90102772A patent/EP0384268B1/fr not_active Expired - Lifetime
- 1990-02-13 ES ES90102772T patent/ES2055181T3/es not_active Expired - Lifetime
- 1990-02-13 DE DE59005979T patent/DE59005979D1/de not_active Expired - Fee Related
- 1990-02-15 CA CA002010189A patent/CA2010189C/fr not_active Expired - Fee Related
- 1990-02-16 FI FI900785A patent/FI100117B/fi active IP Right Grant
- 1990-02-16 HU HU90837A patent/HUT53165A/hu unknown
- 1990-02-16 AU AU49815/90A patent/AU634208B2/en not_active Ceased
- 1990-02-19 JP JP2036425A patent/JP2854072B2/ja not_active Expired - Fee Related

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2360715A1 (fr) *	1976-08-02	1978-03-03	Rohm & Haas	Procede pour maitriser la poix dans la fabrication du papier
EP0228637A2 (fr) *	1985-12-19	1987-07-15	Chemische Fabrik Stockhausen GmbH	Copolymères d'acrylamide et de diméthylaminopropylacrylamide comme floculants et procédé de déshydratation de boues d'épuration par ces floculants

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1991015250A1 (fr) *	1990-03-30	1991-10-17	Medtronic, Inc.	Hydrogel amphotere pour dispositifs medicaux

Also Published As

Publication number	Publication date
JP2854072B2 (ja)	1999-02-03
FI900785A0 (fi)	1990-02-16
CA2010189C (fr)	2001-04-17
CA2010189A1 (fr)	1990-08-18
FI100117B (fi)	1997-09-30
JPH02259195A (ja)	1990-10-19
AU4981590A (en)	1990-08-23
HUT53165A (en)	1990-09-28
ES2055181T3 (es)	1994-08-16
DE3905049A1 (de)	1990-08-23
HU900837D0 (en)	1990-05-28
EP0384268B1 (fr)	1994-06-08
DE59005979D1 (de)	1994-07-14
ATE106964T1 (de)	1994-06-15
DK0384268T3 (da)	1994-10-03
AU634208B2 (en)	1993-02-18

Legal Events

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1990-07-14	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1990-08-29	17P	Request for examination filed	Effective date: 19900303
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1992-09-09	17Q	First examination report despatched	Effective date: 19920724
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Publication	Publication Date	Title
EP0249891B1 (fr)	1990-08-22	Procédé de préparation de papier et carton
EP0438707B1 (fr)	1993-12-15	Procédé de fabrication de papier et de carton
DE68905208T3 (de)	2001-02-15	Herstellung von Papier und Pappe.
DE60311467T2 (de)	2007-11-08	Dispersion von wasserlöslichem polymer, herstellungsverfahren dafür und verwendungsverfahren dafür
DE69221060T2 (de)	1998-03-05	Verwendung von Emzymen und Flockungsmitteln zur Erhöhung der Entwässerungsneigung von Papierpulpe
EP0811017B1 (fr)	1999-02-17	Particules de cellulose, leur procede de production et leur utilisation
DE1692854A1 (de)	1971-10-21	Verfahren zur Entwaesserung von Cellulosefaser-Suspensionen
DE102004056551A1 (de)	2006-05-24	Verfahren zur Herstellung von Papier, Pappe und Karton mit hoher Trockenfestigkeit
DE19632079A1 (de)	1997-03-27	Verbessertes Verfahren zur Herstellung von Papier
US5292404A (en)	1994-03-08	Process for trash removal or pitch-like resin control in the paper manufacture
EP0438755B1 (fr)	1994-03-16	Procédé de fabrication de papier et de carton à partir de matières de papier contenant des produits perturbateurs
EP1792010B1 (fr)	2015-11-11	Procede de fabrication de papier et de carton
DE4436317A1 (de)	1996-04-18	Verfahren zur Herstellung von Papier mit verbesserter Sieb-Entwässerung und Retention
EP1828481B1 (fr)	2015-09-23	Papiers ayant une forte teneur en matiere de charge et une resistance a la traction a l'etat sec elevee
EP0663031A1 (fr)	1995-07-19	Procede pour colorer du papier.
EP0384268B1 (fr)	1994-06-08	Procédé pour la fixation d'impuretés dans la fabrication du papier
EP0553135B1 (fr)	1994-12-28	Procede pour le collage en pile de papier et de cartons
EP1727938A1 (fr)	2006-12-06	Procede de fabrication de papier, de carton-pate et de carton
AT524610B1 (de)	2022-11-15	Verfahren zur Abtrennung von cellulosischen Feinstoffen aus Faserstoffsuspensionen und/oder Filtraten
DE1264942C2 (de)	1974-02-07	Verfahren zur herstellung von papier
DE102004061605A1 (de)	2006-07-06	Papiere mit hohem Füllstoffgehalt und hoher Trockenfestigkeit
EP0155503B1 (fr)	1988-03-16	Amélioration du dégouttage de nappes humides de papier utilisant des polymères Mannich d'acrylamide
RU2132425C1 (ru)	1999-06-27	Способ изготовления типографской бумаги
DE102005022799A1 (de)	2006-11-16	Papier mit hohem Füllstoffgehalt und hoher Trockenfestigkeit
WO2006136556A2 (fr)	2006-12-28	Procede de fabrication de papier et de carton

EP0384268A1 - Procédé pour la fixation d'impuretés dans la fabrication du papier - Google Patents

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