CA2085348C - Paper, paperboard and cardboard internal sizing process - Google Patents

Paper, paperboard and cardboard internal sizing process Download PDF

Info

Publication number: CA2085348C
Authority: CA; Canada
Prior art keywords: units; paper; fixing agent; vinyl; polymerized
Prior art date: 1990-10-15
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 - Fee Related

Application number

CA002085348A

Other languages

English (en)

French (fr)

Other versions

CA2085348A1 (en

Inventor

Michael Kroener

Claudia Nilz

Norbert Sendhoff

Andreas Stange

Arnold De Clercq

Ulrich Riebeling

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.)

BASF SE

Original Assignee

BASF SE

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.)

1990-10-15

Filing date

1991-10-04

Publication date

2005-06-14

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6416303&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2085348(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1991-10-04 Application filed by BASF SE filed Critical BASF SE

1992-04-16 Publication of CA2085348A1 publication Critical patent/CA2085348A1/en

2005-06-14 Application granted granted Critical

2005-06-14 Publication of CA2085348C publication Critical patent/CA2085348C/en

2011-10-04 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

239000000123 paper Substances 0.000 title claims abstract description 29
238000004513 sizing Methods 0.000 title claims abstract description 22
238000000034 method Methods 0.000 title claims abstract description 13
239000011111 cardboard Substances 0.000 title claims abstract description 9
239000011087 paperboard Substances 0.000 title abstract 2
229920005989 resin Polymers 0.000 claims abstract description 32
239000011347 resin Substances 0.000 claims abstract description 32
239000003795 chemical substances by application Substances 0.000 claims abstract description 24
UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical group NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 claims abstract description 16
229920006317 cationic polymer Polymers 0.000 claims abstract description 12
ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 claims description 18
229920001577 copolymer Polymers 0.000 claims description 15
229920000642 polymer Polymers 0.000 claims description 12
230000007062 hydrolysis Effects 0.000 claims description 10
238000006460 hydrolysis reaction Methods 0.000 claims description 10
XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 7
239000000178 monomer Substances 0.000 claims description 6
UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 claims description 5
229920003043 Cellulose fiber Polymers 0.000 claims description 4
SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
-1 C1-C4-alkyl vinyl ethers Chemical class 0.000 claims description 3
CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 3
WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims description 3
150000001408 amides Chemical class 0.000 claims description 3
150000002148 esters Chemical class 0.000 claims description 3
125000002485 formyl group Chemical group [H]C(*)=O 0.000 claims description 3
229920001519 homopolymer Polymers 0.000 claims description 3
150000002825 nitriles Chemical class 0.000 claims description 3
125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 claims description 2
125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 claims description 2
229940063559 methacrylic acid Drugs 0.000 claims 1
230000000379 polymerizing effect Effects 0.000 claims 1
238000002360 preparation method Methods 0.000 description 11
229920001131 Pulp (paper) Polymers 0.000 description 10
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 description 7
229940037003 alum Drugs 0.000 description 6
239000007864 aqueous solution Substances 0.000 description 5
239000011436 cob Substances 0.000 description 5
150000001875 compounds Chemical class 0.000 description 5
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 3
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
125000002091 cationic group Chemical group 0.000 description 3
230000000052 comparative effect Effects 0.000 description 3
239000000835 fiber Substances 0.000 description 3
238000005188 flotation Methods 0.000 description 3
239000000203 mixture Substances 0.000 description 3
RQAKESSLMFZVMC-UHFFFAOYSA-N n-ethenylacetamide Chemical compound CC(=O)NC=C RQAKESSLMFZVMC-UHFFFAOYSA-N 0.000 description 3
VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
241000196324 Embryophyta Species 0.000 description 2
IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical group OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 2
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
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 2
FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
239000002253 acid Substances 0.000 description 2
230000032683 aging Effects 0.000 description 2
150000008064 anhydrides Chemical class 0.000 description 2
QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 2
238000001035 drying Methods 0.000 description 2
239000008396 flotation agent Substances 0.000 description 2
230000002209 hydrophobic effect Effects 0.000 description 2
230000014759 maintenance of location Effects 0.000 description 2
239000000463 material Substances 0.000 description 2
HAZULKRCTMKQAS-UHFFFAOYSA-N n-ethenylbutanamide Chemical compound CCCC(=O)NC=C HAZULKRCTMKQAS-UHFFFAOYSA-N 0.000 description 2
IUWVWLRMZQHYHL-UHFFFAOYSA-N n-ethenylpropanamide Chemical compound CCC(=O)NC=C IUWVWLRMZQHYHL-UHFFFAOYSA-N 0.000 description 2
230000001376 precipitating effect Effects 0.000 description 2
239000000243 solution Substances 0.000 description 2
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 2
125000004169 (C1-C6) alkyl group Chemical group 0.000 description 1
VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
235000018185 Betula X alpestris Nutrition 0.000 description 1
235000018212 Betula X uliginosa Nutrition 0.000 description 1
WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 1
244000140995 Capparis spinosa Species 0.000 description 1
235000017336 Capparis spinosa Nutrition 0.000 description 1
240000000797 Hibiscus cannabinus Species 0.000 description 1
240000007594 Oryza sativa Species 0.000 description 1
235000007164 Oryza sativa Nutrition 0.000 description 1
KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
240000000111 Saccharum officinarum Species 0.000 description 1
235000007201 Saccharum officinarum Nutrition 0.000 description 1
206010041235 Snoring Diseases 0.000 description 1
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
241000209140 Triticum Species 0.000 description 1
235000021307 Triticum Nutrition 0.000 description 1
230000002378 acidificating effect Effects 0.000 description 1
229910000147 aluminium phosphate Inorganic materials 0.000 description 1
125000003368 amide group Chemical group 0.000 description 1
125000003277 amino group Chemical group 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
229910000019 calcium carbonate Inorganic materials 0.000 description 1
238000006243 chemical reaction Methods 0.000 description 1
238000007334 copolymerization reaction Methods 0.000 description 1
239000000539 dimer Substances 0.000 description 1
230000008030 elimination Effects 0.000 description 1
238000003379 elimination reaction Methods 0.000 description 1
239000000839 emulsion Substances 0.000 description 1
NLFBCYMMUAKCPC-KQQUZDAGSA-N ethyl (e)-3-[3-amino-2-cyano-1-[(e)-3-ethoxy-3-oxoprop-1-enyl]sulfanyl-3-oxoprop-1-enyl]sulfanylprop-2-enoate Chemical compound CCOC(=O)\C=C\SC(=C(C#N)C(N)=O)S\C=C\C(=O)OCC NLFBCYMMUAKCPC-KQQUZDAGSA-N 0.000 description 1
239000000945 filler Substances 0.000 description 1
239000008394 flocculating agent Substances 0.000 description 1
230000003301 hydrolyzing effect Effects 0.000 description 1
239000012948 isocyanate Substances 0.000 description 1
150000002513 isocyanates Chemical class 0.000 description 1
239000002655 kraft paper Substances 0.000 description 1
239000007788 liquid Substances 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
PNLUGRYDUHRLOF-UHFFFAOYSA-N n-ethenyl-n-methylacetamide Chemical compound C=CN(C)C(C)=O PNLUGRYDUHRLOF-UHFFFAOYSA-N 0.000 description 1
OFESGEKAXKKFQT-UHFFFAOYSA-N n-ethenyl-n-methylformamide Chemical compound C=CN(C)C=O OFESGEKAXKKFQT-UHFFFAOYSA-N 0.000 description 1
239000005445 natural material Substances 0.000 description 1
229930014626 natural product Natural products 0.000 description 1
230000007935 neutral effect Effects 0.000 description 1
239000010893 paper waste Substances 0.000 description 1
229920002401 polyacrylamide Polymers 0.000 description 1
125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
125000001453 quaternary ammonium group Chemical group 0.000 description 1
230000036647 reaction Effects 0.000 description 1
235000009566 rice Nutrition 0.000 description 1
125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
239000000344 soap Substances 0.000 description 1
239000011780 sodium chloride Substances 0.000 description 1
229940083608 sodium hydroxide Drugs 0.000 description 1
235000011121 sodium hydroxide Nutrition 0.000 description 1
239000007787 solid Substances 0.000 description 1
239000007858 starting material Substances 0.000 description 1
239000003760 tallow Substances 0.000 description 1
239000008399 tap water Substances 0.000 description 1
235000020679 tap water Nutrition 0.000 description 1
125000001302 tertiary amino group Chemical group 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
- 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
- D21H21/14—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 characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents

Landscapes

Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
Paper (AREA)
Sanitary Thin Papers (AREA)
Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

CA002085348A 1990-10-15 1991-10-04 Paper, paperboard and cardboard internal sizing process Expired - Fee Related CA2085348C (en)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
DE4032660A DE4032660A1 (de)	1990-10-15	1990-10-15	Verfahren zur masseleimung von papier, pappe und karton
DEP4032660.8		1990-10-15
PCT/EP1991/001894 WO1992007141A2 (de)	1990-10-15	1991-10-04	Verfahren zur masseleimung von papier, pappe und karton

Publications (2)

Publication Number	Publication Date
CA2085348A1 CA2085348A1 (en)	1992-04-16
CA2085348C true CA2085348C (en)	2005-06-14

Family

ID=6416303

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002085348A Expired - Fee Related CA2085348C (en)	1990-10-15	1991-10-04	Paper, paperboard and cardboard internal sizing process

Country Status (10)

Country	Link
EP (1)	EP0553135B1 (de)
JP (1)	JP3176620B2 (de)
AT (1)	ATE116394T1 (de)
AU (1)	AU8646891A (de)
CA (1)	CA2085348C (de)
DE (2)	DE4032660A1 (de)
ES (1)	ES2067249T3 (de)
FI (1)	FI97405C (de)
NZ (1)	NZ240196A (de)
WO (1)	WO1992007141A2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5280077A (en) *	1992-07-14	1994-01-18	Air Products And Chemicals, Inc.	Process for the synthesis of oligomeric vinylamines
US5519093A (en) *	1994-05-11	1996-05-21	Air Products And Chemicals, Inc.	Synthesis of amine functional co-and terpolymers
US6273998B1 (en)	1994-08-16	2001-08-14	Betzdearborn Inc.	Production of paper and paperboard
DE19753212A1 (de) *	1997-12-01	1999-06-02	Basf Ag	Verfahren zur Masseleimung von Papier, Pappe und Karton
DE10237913A1 (de) *	2002-08-14	2004-02-26	Basf Ag	Verfahren zur Herstellung von Karton aus Cellulosefasern für die Verpackung von Flüssigkeiten
JP2005171411A (ja) *	2003-12-10	2005-06-30	Seiko Pmc Corp	填料含有紙、及び填料含有紙の製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0105028B1 (de) *	1982-08-25	1986-11-12	Ciba-Geigy Ag	Verfahren zum Leimen von Papier mit anionischen, hydrophoben Leimungsmitteln und kationischen Retentionsmitteln
DE3534273A1 (de) *	1985-09-26	1987-04-02	Basf Ag	Verfahren zur herstellung von vinylamin-einheiten enthaltenden wasserloeslichen copolymerisaten und deren verwendung als nass- und trockenverfestigungsmittel fuer papier
CA1283748C (en) *	1986-06-25	1991-04-30	Takaharu Itagaki	Vinylamine copolymer, flocculating agent and paper strength increasingagent using the same, as well as process for producing the same
GB8806432D0 (en) *	1988-03-18	1988-04-20	Albright & Wilson	Paper sizing methods & compositions
DE4001045A1 (de) *	1990-01-16	1991-07-18	Basf Ag	Verfahren zur herstellung von papier, pappe und karton

1990
- 1990-10-15 DE DE4032660A patent/DE4032660A1/de not_active Withdrawn
1991
- 1991-10-04 CA CA002085348A patent/CA2085348C/en not_active Expired - Fee Related
- 1991-10-04 EP EP91917563A patent/EP0553135B1/de not_active Expired - Lifetime
- 1991-10-04 AU AU86468/91A patent/AU8646891A/en not_active Abandoned
- 1991-10-04 WO PCT/EP1991/001894 patent/WO1992007141A2/de not_active Ceased
- 1991-10-04 DE DE59104096T patent/DE59104096D1/de not_active Expired - Fee Related
- 1991-10-04 AT AT91917563T patent/ATE116394T1/de not_active IP Right Cessation
- 1991-10-04 JP JP51621891A patent/JP3176620B2/ja not_active Expired - Fee Related
- 1991-10-04 ES ES91917563T patent/ES2067249T3/es not_active Expired - Lifetime
- 1991-10-11 NZ NZ240196A patent/NZ240196A/xx not_active IP Right Cessation
1993
- 1993-04-13 FI FI931642A patent/FI97405C/fi not_active IP Right Cessation

Also Published As

Publication number	Publication date
FI97405C (fi)	1996-12-10
DE4032660A1 (de)	1992-04-16
AU8646891A (en)	1992-05-20
WO1992007141A2 (de)	1992-04-30
WO1992007141A3 (de)	1992-06-11
EP0553135A1 (de)	1993-08-04
ES2067249T3 (es)	1995-03-16
CA2085348A1 (en)	1992-04-16
JPH06501993A (ja)	1994-03-03
JP3176620B2 (ja)	2001-06-18
EP0553135B1 (de)	1994-12-28
FI931642A0 (fi)	1993-04-13
NZ240196A (en)	1993-10-26
ATE116394T1 (de)	1995-01-15
FI97405B (fi)	1996-08-30
DE59104096D1 (de)	1995-02-09
FI931642L (fi)	1993-04-13

Legal Events

Date	Code	Title	Description
1998-04-28	EEER	Examination request
2008-10-06	MKLA	Lapsed

Publication	Publication Date	Title
CA2034135C (en)	2001-08-14	Production of paper, board and cardboard
US4749444A (en)	1988-06-07	Production of paper and cardboard
US5281307A (en)	1994-01-25	Crosslinked vinyl alcohol/vinylamine copolymers for dry end paper addition
US5397436A (en)	1995-03-14	Paper wet-strength improvement with cellulose reactive size and amine functional poly(vinyl alcohol)
EP0617166B1 (de)	1998-02-11	Verfahren zur Herstellung von Papier mit erhöhter Festigkeit im nassen und trockenen Zustand
CA2586076C (en)	2016-03-15	Production of paper, paperboard, or cardboard having high dry strength using polymeric anionic compound and polymer comprising vinylamine units
US7922867B2 (en)	2011-04-12	Method for producing paper, paperboard and cardboard having high dry strength
US4772359A (en)	1988-09-20	Production of paper, board and cardboard
JP2012530196A (ja)	2012-11-29	紙、板紙および厚紙の製造法
US8486227B2 (en)	2013-07-16	Method for producing paper, paperboard and cardboard
JPS61201097A (ja)	1986-09-05	高い乾燥強度を有する紙の製法
US5098521A (en)	1992-03-24	Production of paper, board and cardboard from paper stocks containing foreign materials
CA2085348C (en)	2005-06-14	Paper, paperboard and cardboard internal sizing process
CA2590489C (en)	2015-02-10	Papers with a high filler material content and high dry strength
KR20170068561A (ko)	2017-06-19	종이 및 카드보드용의 고화 조성물
FI80279B (fi)	1990-01-31	Foerfarande foer framstaellning av papper, kartong och papp med stor torr- och vaotbestaendighet samt lutbestaendighet.
JPS6392799A (ja)	1988-04-23	製紙方法
DE102005029010A1 (de)	2006-12-28	Verfahren zur Herstellung von Papier, Pappe und Karton