SE470065C - Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning - Google Patents

Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning

Info

Publication number: SE470065C
Authority: SE; Sweden
Prior art keywords: pulp; chlorine; treatment; acid; magnesium
Prior art date: 1991-04-30

Application number

SE9101301A

Other languages

English (en)

Swedish (sv)

Other versions

SE9101301D0 (sv

SE470065B (sv

SE9101301L (sv

Inventor

Lennart Andersson

Jiri Basta

Lillemor Holtinger

Jan Hoeoek

Original Assignee

Eka Nobel Ab

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.)

1991-04-30

Filing date

1991-04-30

Publication date

1996-01-15

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20382601&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SE470065(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1991-04-30 Application filed by Eka Nobel Ab filed Critical Eka Nobel Ab

1991-04-30 Priority to SE9101301A priority Critical patent/SE470065C/sv

1991-04-30 Publication of SE9101301D0 publication Critical patent/SE9101301D0/xx

1992-04-08 Priority to AT92201005T priority patent/ATE141971T1/de

1992-04-08 Priority to ES92201005T priority patent/ES2091395T3/es

1992-04-08 Priority to AT94203640T priority patent/ATE173518T1/de

1992-04-08 Priority to DE69227640T priority patent/DE69227640T2/de

1992-04-08 Priority to EP94203640A priority patent/EP0679760B1/de

1992-04-08 Priority to EP92201005A priority patent/EP0511695B2/de

1992-04-08 Priority to DE69213080T priority patent/DE69213080D1/de

1992-04-23 Priority to NZ242465A priority patent/NZ242465A/en

1992-04-27 Priority to CA002139246A priority patent/CA2139246A1/en

1992-04-27 Priority to FI921886A priority patent/FI111964B/fi

1992-04-27 Priority to CA002067296A priority patent/CA2067296C/en

1992-04-27 Priority to AU15149/92A priority patent/AU651192C/en

1992-04-28 Priority to ZA923073A priority patent/ZA923073B/xx

1992-04-28 Priority to MX9201966A priority patent/MX9201966A/es

1992-04-28 Priority to JP4134325A priority patent/JP2592747B2/ja

1992-04-28 Priority to BR929201554A priority patent/BR9201554A/pt

1992-04-29 Priority to NO19921671A priority patent/NO180495C/no

1992-04-29 Priority to SU925011770A priority patent/RU2039141C1/ru

1992-10-31 Publication of SE9101301L publication Critical patent/SE9101301L/

1993-11-01 Publication of SE470065B publication Critical patent/SE470065B/sv

1996-01-15 Publication of SE470065C publication Critical patent/SE470065C/sv

1996-11-22 Priority to US08/754,884 priority patent/US6398908B1/en

Links

239000002253 acid Substances 0.000 title claims abstract description 17
238000004061 bleaching Methods 0.000 title claims abstract description 13
229940043430 calcium compound Drugs 0.000 title claims abstract 5
150000001674 calcium compounds Chemical class 0.000 title claims abstract 5
239000011777 magnesium Substances 0.000 title claims description 13
FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims description 11
229910052749 magnesium Inorganic materials 0.000 title claims description 11
229920001131 Pulp (paper) Polymers 0.000 title description 3
MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 48
238000000034 method Methods 0.000 claims abstract description 27
239000007844 bleaching agent Substances 0.000 claims abstract description 18
239000000203 mixture Substances 0.000 claims abstract description 8
CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 6
150000002681 magnesium compounds Chemical class 0.000 claims abstract 4
CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 12
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
239000001301 oxygen Substances 0.000 claims description 7
229910052760 oxygen Inorganic materials 0.000 claims description 7
TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 6
229910052943 magnesium sulfate Inorganic materials 0.000 claims description 6
235000019341 magnesium sulphate Nutrition 0.000 claims description 6
QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
229910021653 sulphate ion Inorganic materials 0.000 claims description 5
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
239000011575 calcium Substances 0.000 claims description 3
229910052791 calcium Inorganic materials 0.000 claims description 3
229910001629 magnesium chloride Inorganic materials 0.000 claims description 3
UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
239000001110 calcium chloride Substances 0.000 claims description 2
229910001628 calcium chloride Inorganic materials 0.000 claims description 2
BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
239000000292 calcium oxide Substances 0.000 claims description 2
ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 2
230000015572 biosynthetic process Effects 0.000 abstract description 2
229910052784 alkaline earth metal Inorganic materials 0.000 description 16
150000001342 alkaline earth metals Chemical class 0.000 description 16
150000001875 compounds Chemical class 0.000 description 14
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 12
238000007792 addition Methods 0.000 description 12
150000002978 peroxides Chemical class 0.000 description 12
229910021645 metal ion Inorganic materials 0.000 description 6
229910001420 alkaline earth metal ion Inorganic materials 0.000 description 4
OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 4
150000002500 ions Chemical class 0.000 description 4
JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
238000002474 experimental method Methods 0.000 description 3
239000011121 hardwood Substances 0.000 description 3
239000007788 liquid Substances 0.000 description 3
VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 3
239000000347 magnesium hydroxide Substances 0.000 description 3
229910001862 magnesium hydroxide Inorganic materials 0.000 description 3
229910001425 magnesium ion Inorganic materials 0.000 description 3
239000000126 substance Substances 0.000 description 3
239000004155 Chlorine dioxide Substances 0.000 description 2
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
239000003513 alkali Substances 0.000 description 2
239000007864 aqueous solution Substances 0.000 description 2
229920002678 cellulose Polymers 0.000 description 2
239000001913 cellulose Substances 0.000 description 2
235000019398 chlorine dioxide Nutrition 0.000 description 2
238000009792 diffusion process Methods 0.000 description 2
WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
229920005610 lignin Polymers 0.000 description 2
238000004519 manufacturing process Methods 0.000 description 2
229910052751 metal Inorganic materials 0.000 description 2
239000002184 metal Substances 0.000 description 2
150000002739 metals Chemical class 0.000 description 2
229910017604 nitric acid Inorganic materials 0.000 description 2
239000002002 slurry Substances 0.000 description 2
239000000243 solution Substances 0.000 description 2
LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
238000005406 washing Methods 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
241000218631 Coniferophyta Species 0.000 description 1
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
238000010306 acid treatment Methods 0.000 description 1
230000002378 acidificating effect Effects 0.000 description 1
150000001341 alkaline earth metal compounds Chemical class 0.000 description 1
239000002585 base Substances 0.000 description 1
230000009286 beneficial effect Effects 0.000 description 1
239000000460 chlorine Substances 0.000 description 1
229910052801 chlorine Inorganic materials 0.000 description 1
229910052802 copper Inorganic materials 0.000 description 1
238000000354 decomposition reaction Methods 0.000 description 1
230000029087 digestion Effects 0.000 description 1
230000000694 effects Effects 0.000 description 1
238000000605 extraction Methods 0.000 description 1
239000001257 hydrogen Substances 0.000 description 1
229910052739 hydrogen Inorganic materials 0.000 description 1
150000007522 mineralic acids Chemical class 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
150000007524 organic acids Chemical class 0.000 description 1
238000006213 oxygenation reaction Methods 0.000 description 1
-1 peroxide peroxide compounds Chemical class 0.000 description 1
230000008092 positive effect Effects 0.000 description 1
239000002244 precipitate Substances 0.000 description 1
238000002203 pretreatment Methods 0.000 description 1
239000000047 product Substances 0.000 description 1
229910000029 sodium carbonate Inorganic materials 0.000 description 1
JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 1
PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
239000011122 softwood Substances 0.000 description 1
238000010561 standard procedure Methods 0.000 description 1
239000000725 suspension Substances 0.000 description 1
238000004448 titration Methods 0.000 description 1
229910021654 trace metal Inorganic materials 0.000 description 1

Classifications

- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)
Compositions Of Macromolecular Compounds (AREA)
Processes Of Treating Macromolecular Substances (AREA)
Noodles (AREA)
Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
Investigating Or Analysing Biological Materials (AREA)
Materials For Medical Uses (AREA)

SE9101301A 1991-04-30 1991-04-30 Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning SE470065C (sv)

Priority Applications (20)

Application Number	Priority Date	Filing Date	Title
SE9101301A SE470065C (sv)	1991-04-30	1991-04-30	Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning
AT92201005T ATE141971T1 (de)	1991-04-30	1992-04-08	Verfahren zum bleichen von lignocellulose enthaltendem zellstoff
ES92201005T ES2091395T3 (es)	1991-04-30	1992-04-08	Procedimiento para blanqueo de pasta papelera que contiene lignocelulosa.
AT94203640T ATE173518T1 (de)	1991-04-30	1992-04-08	Verfahren zum bleichen von lignocellulose- enthaltendem zellstoff
DE69227640T DE69227640T2 (de)	1991-04-30	1992-04-08	Verfahren zum Bleichen von Lignocellulose-enthaltendem Zellstoff
EP94203640A EP0679760B1 (de)	1991-04-30	1992-04-08	Verfahren zum Bleichen von Lignocellulose-enthaltendem Zellstoff
EP92201005A EP0511695B2 (de)	1991-04-30	1992-04-08	Verfahren zum Bleichen von Lignocellulose enthaltendem Zellstoff
DE69213080T DE69213080D1 (de)	1991-04-30	1992-04-08	Verfahren zum Bleichen von Lignocellulose enthaltendem Zellstoff
NZ242465A NZ242465A (en)	1991-04-30	1992-04-23	Delignification and bleaching of chemical pulp with acid and a magnesium
CA002067296A CA2067296C (en)	1991-04-30	1992-04-27	Process for bleaching of lignocellulose-containing pulp
FI921886A FI111964B (fi)	1991-04-30	1992-04-27	Menetelmä lignoselluloosapitoisen massan valkaisemiseksi
CA002139246A CA2139246A1 (en)	1991-04-30	1992-04-27	Process for bleaching of lignocellulose-containing pulp
AU15149/92A AU651192C (en)	1991-04-30	1992-04-27	Process for bleaching of lignocellulose-containing pulp
ZA923073A ZA923073B (en)	1991-04-30	1992-04-28	Process for bleaching of lignocellulose-containing pulp
MX9201966A MX9201966A (es)	1991-04-30	1992-04-28	Proceso para blanqueo de pasta que contiene lignocelulosa.
JP4134325A JP2592747B2 (ja)	1991-04-30	1992-04-28	リグノセルロース含有パルプの漂白方法
BR929201554A BR9201554A (pt)	1991-04-30	1992-04-28	Processo para a deslignificacao e alvejamento de polpa contendo ligno-celulose quimicamente digerida
SU925011770A RU2039141C1 (ru)	1991-04-30	1992-04-29	Способ делигнификации и отбелки химически сваренной лигноцеллюлозосодержащей пульпы
NO19921671A NO180495C (no)	1991-04-30	1992-04-29	Fremgangsmåte ved delignifisering og bleking av kjemisk oppsluttet lignocelluloseholdig materiale
US08/754,884 US6398908B1 (en)	1991-04-30	1996-11-22	Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE9101301A SE470065C (sv)	1991-04-30	1991-04-30	Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning

Publications (4)

Publication Number	Publication Date
SE9101301D0 SE9101301D0 (sv)	1991-04-30
SE9101301L SE9101301L (sv)	1992-10-31
SE470065B SE470065B (sv)	1993-11-01
SE470065C true SE470065C (sv)	1996-01-15

Family

ID=20382601

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE9101301A SE470065C (sv)	1991-04-30	1991-04-30	Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning

Country Status (14)

Country	Link
EP (2)	EP0679760B1 (de)
JP (1)	JP2592747B2 (de)
AT (2)	ATE173518T1 (de)
BR (1)	BR9201554A (de)
CA (1)	CA2067296C (de)
DE (2)	DE69213080D1 (de)
ES (1)	ES2091395T3 (de)
FI (1)	FI111964B (de)
MX (1)	MX9201966A (de)
NO (1)	NO180495C (de)
NZ (1)	NZ242465A (de)
RU (1)	RU2039141C1 (de)
SE (1)	SE470065C (de)
ZA (1)	ZA923073B (de)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI89516B (fi)	1989-05-10	1993-06-30	Ahlstroem Oy	Foerfarande foer blekning av cellulosamassa med otson
US6398908B1 (en)	1991-04-30	2002-06-04	Eka Nobel Ab	Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
SE500353C2 (sv) *	1992-10-26	1994-06-06	Sca Wifsta Oestrand Ab	Peroxidblekning av sulfatmassa med tillsats av magnesium före blekningen
SE512137C2 (sv) *	1992-10-29	2000-01-31	Eka Chemicals Ab	Förfarande för blekning av lignocellulosahaltig massa
SE9203366L (sv) *	1992-11-11	1994-05-12	Mo Och Domsjoe Ab	Förfarande vid delignifiering och/eller blekning av cellulosamassa
US6007678A (en) *	1992-11-27	1999-12-28	Eka Nobel Ab	Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof
EP0622491B2 (de) *	1993-04-20	2002-07-17	Eka Chemicals AB	Verfahren zum Bleichen von Lignozellulose-enthaltendem Zellstoff
SE9301960L (sv) *	1993-06-08	1994-07-25	Kvaerner Pulping Tech	Blekning av kemisk massa med peroxid vid övertryck
US6605181B1 (en) *	1993-10-01	2003-08-12	Kvaerner Pulping Aktiebolag	Peroxide bleach sequence including an acidic bleach stage and including a wash stage
BE1007757A3 (fr) *	1993-11-10	1995-10-17	Solvay Interox	Procede pour le blanchiment d'une pate a papier chimique.
FI102301B1 (fi) *	1994-10-13	1998-11-13	Ahlstrom Machinery Oy	Menetelmä selluloosamassojen käsittelemiseksi
US6776876B1 (en)	1994-10-13	2004-08-17	Andritz Oy	Method of treating cellulosic pulp to remove hexenuronic acid
DE19516151A1 (de) *	1995-05-03	1996-11-07	Sven Siegle	Verfahren zur Herstellung einer Pulpe aus zellulosehaltigem Material, die Pulpe selbst und deren Verwendung
FI105701B (fi)	1995-10-20	2000-09-29	Ahlstrom Machinery Oy	Menetelmä ja laitteisto massan käsittelemiseksi
JPH108092A (ja) *	1996-06-21	1998-01-13	Mitsubishi Paper Mills Ltd	過酸化物漂白用安定化剤及びそれを用いた繊維系物質の漂白方法
BE1010679A3 (fr) *	1996-10-11	1998-11-03	Solvay Interox	Procede de delignification et de blanchiment de pate a papier chimique.
ID23571A (id) *	1997-08-25	2000-05-04	Praxair Technology Inc	Metoda penerapan ozon dalam pemutihan ecf
RU2164571C1 (ru) *	2000-06-27	2001-03-27	Камский целлюлозно-бумажный комбинат	Способ получения беленой сульфитной целлюлозы на магниевом основании
JP2002266272A (ja) *	2001-03-12	2002-09-18	Nippon Paper Industries Co Ltd	セルロース質繊維材料パルプの漂白方法
US6743332B2 (en) *	2001-05-16	2004-06-01	Weyerhaeuser Company	High temperature peroxide bleaching of mechanical pulps
KR100547491B1 (ko) *	2005-04-27	2006-01-31	이권혁	대나무를 이용하여 생산하는 섬유용 펄프의 제조방법 및 그 펄프
US9512563B2 (en)	2009-05-28	2016-12-06	Gp Cellulose Gmbh	Surface treated modified cellulose from chemical kraft fiber and methods of making and using same
BRPI1012052A2 (pt)	2009-05-28	2017-12-26	Gp Cellulose Gmbh	fibras kraft hidrolisadas e quimicamente modificadas e métodos de produção e de branqueamento de fibras kraft
US9512237B2 (en)	2009-05-28	2016-12-06	Gp Cellulose Gmbh	Method for inhibiting the growth of microbes with a modified cellulose fiber
US9511167B2 (en)	2009-05-28	2016-12-06	Gp Cellulose Gmbh	Modified cellulose from chemical kraft fiber and methods of making and using the same
BR112013030060A2 (pt)	2011-05-23	2018-01-16	Gp Cellulose Gmbh	fibras e tábua de madeira resinosa kraft e respectivo método para fabricação de fibra kraft
CA2860609C (en)	2012-01-12	2021-02-16	Gp Cellulose Gmbh	A low viscosity kraft fiber having reduced yellowing properties and methods of making and using the same
MX364847B (es)	2012-04-18	2019-05-08	Gp Cellulose Gmbh	El uso de surfactante para tratar pulpa y mejorar la incorporacion de pulpa kraft en fibra para la produccion de viscosa y otros productos de fibra secundarios.
WO2014052763A1 (en) *	2012-09-27	2014-04-03	Andritz Inc.	Chemical treatment of lignocellulosic fiber bundle material, and methods and systems relating thereto
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1991
- 1991-04-30 SE SE9101301A patent/SE470065C/sv not_active IP Right Cessation
1992
- 1992-04-08 AT AT94203640T patent/ATE173518T1/de not_active IP Right Cessation
- 1992-04-08 ES ES92201005T patent/ES2091395T3/es not_active Expired - Lifetime
- 1992-04-08 DE DE69213080T patent/DE69213080D1/de not_active Expired - Lifetime
- 1992-04-08 EP EP94203640A patent/EP0679760B1/de not_active Expired - Lifetime
- 1992-04-08 EP EP92201005A patent/EP0511695B2/de not_active Expired - Lifetime
- 1992-04-08 DE DE69227640T patent/DE69227640T2/de not_active Expired - Fee Related
- 1992-04-08 AT AT92201005T patent/ATE141971T1/de not_active IP Right Cessation
- 1992-04-23 NZ NZ242465A patent/NZ242465A/en unknown
- 1992-04-27 CA CA002067296A patent/CA2067296C/en not_active Expired - Fee Related
- 1992-04-27 FI FI921886A patent/FI111964B/fi active
- 1992-04-28 ZA ZA923073A patent/ZA923073B/xx unknown
- 1992-04-28 JP JP4134325A patent/JP2592747B2/ja not_active Expired - Fee Related
- 1992-04-28 BR BR929201554A patent/BR9201554A/pt not_active IP Right Cessation
- 1992-04-28 MX MX9201966A patent/MX9201966A/es unknown
- 1992-04-29 NO NO19921671A patent/NO180495C/no not_active IP Right Cessation
- 1992-04-29 RU SU925011770A patent/RU2039141C1/ru not_active IP Right Cessation

Also Published As

Publication number	Publication date
AU651192B2 (en)	1994-07-14
SE9101301D0 (sv)	1991-04-30
BR9201554A (pt)	1992-12-01
NO180495C (no)	2003-06-06
FI921886A0 (fi)	1992-04-27
EP0679760A1 (de)	1995-11-02
EP0679760B1 (de)	1998-11-18
FI921886L (fi)	1992-10-31
RU2039141C1 (ru)	1995-07-09
ATE173518T1 (de)	1998-12-15
CA2067296C (en)	1997-03-04
DE69213080D1 (de)	1996-10-02
ES2091395T3 (es)	1996-11-01
NO180495B (no)	1997-01-20
FI111964B (fi)	2003-10-15
DE69227640T2 (de)	1999-05-06
SE470065B (sv)	1993-11-01
JPH05148784A (ja)	1993-06-15
ZA923073B (en)	1992-12-30
AU1514992A (en)	1993-03-11
EP0511695B1 (de)	1996-08-28
EP0511695B2 (de)	2004-06-02
NO921671D0 (no)	1992-04-29
DE69227640D1 (de)	1998-12-24
CA2067296A1 (en)	1992-10-31
MX9201966A (es)	1992-11-01
ATE141971T1 (de)	1996-09-15
NO921671L (no)	1992-11-02
EP0511695A1 (de)	1992-11-04
SE9101301L (sv)	1992-10-31
JP2592747B2 (ja)	1997-03-19
NZ242465A (en)	1993-12-23

Legal Events

Date	Code	Title	Description
2011-02-15	NUG	Patent has lapsed

Publication	Publication Date	Title
SE470065C (sv)	1996-01-15	Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning
US5310458A (en)	1994-05-10	Process for bleaching lignocellulose-containing pulps
US6398908B1 (en)	2002-06-04	Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
CA2067295C (en)	1996-07-23	Process for bleaching of lignocellulose-containing material
US5143580A (en)	1992-09-01	Process for reducing the amount of halogenated organic compounds in spent liquor from a peroxide-halogen bleaching sequence
CZ282692B6 (cs)	1997-09-17	Způsob delignifikace buničiny obsahující lignocelulozu
EP0622491B2 (de)	2002-07-17	Verfahren zum Bleichen von Lignozellulose-enthaltendem Zellstoff
SE512137C2 (sv)	2000-01-31	Förfarande för blekning av lignocellulosahaltig massa
SE467006B (sv)	1992-05-11	Blekning av kemisk massa med peroxid varvid massan foerst behandlas med en komplexbildare
SE501581C2 (sv)	1995-03-20	Förbehandling av lignocellulosahaltig massa med magnesium- och kalciumförening före peroxidblekning
CA2139246A1 (en)	1992-10-31	Process for bleaching of lignocellulose-containing pulp
SE501651C2 (sv)	1995-04-03	Förbehandling av lignocellulosahaltig massa med magnesium- och kalciumförening före peroxidblekning