FI961975A7 - Method for bleaching chemical paper pulp - Google Patents

Method for bleaching chemical paper pulp Download PDF

Info

Publication number: FI961975A7
Authority: FI; Finland
Prior art keywords: paper pulp; bleaching chemical; chemical paper; bleaching; pulp
Prior art date: 1993-11-10

Application number

FI961975A

Other languages

Finnish (fi)

Swedish (sv)

Other versions

FI961975L (en

FI961975A0 (en

Inventor

Francois Desprez

Johan Devenyns

Nicholas A Throughton

Original Assignee

Solvay Interox

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.)

1993-11-10

Filing date

1994-10-28

Publication date

1996-07-09

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3887547&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI961975(A7) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1994-10-28 Application filed by Solvay Interox filed Critical Solvay Interox

1996-05-09 Publication of FI961975A0 publication Critical patent/FI961975A0/en

1996-07-09 Publication of FI961975L publication Critical patent/FI961975L/en

1996-07-09 Publication of FI961975A7 publication Critical patent/FI961975A7/en

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
- D21C9/1026—Other features in bleaching processes
- D21C9/1042—Use of chelating agents
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

FI961975A 1993-11-10 1994-10-28 Method for bleaching chemical paper pulp FI961975A7 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
BE9301251A BE1007757A3 (en)	1993-11-10	1993-11-10	Method of laundering of chemical pulp.
PCT/EP1994/003590 WO1995013420A1 (en)	1993-11-10	1994-10-28	Method of bleaching chemical paper pulp

Publications (3)

Publication Number	Publication Date
FI961975A0 FI961975A0 (en)	1996-05-09
FI961975L FI961975L (en)	1996-07-09
FI961975A7 true FI961975A7 (en)	1996-07-09

Family

ID=3887547

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI961975A FI961975A7 (en)	1993-11-10	1994-10-28	Method for bleaching chemical paper pulp

Country Status (14)

Country	Link
EP (1)	EP0728238B2 (en)
JP (1)	JPH10500178A (en)
AT (1)	ATE175738T1 (en)
AU (1)	AU7993994A (en)
BE (1)	BE1007757A3 (en)
BR (1)	BR9408027A (en)
CA (1)	CA2176246A1 (en)
DE (1)	DE69416000D1 (en)
ES (1)	ES2129142T5 (en)
FI (1)	FI961975A7 (en)
MA (1)	MA23369A1 (en)
NO (1)	NO961889L (en)
WO (1)	WO1995013420A1 (en)
ZA (1)	ZA948563B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP4967451B2 (en)	2006-05-17	2012-07-04	三菱瓦斯化学株式会社	Method for producing bleached pulp
CN101903591A (en)	2007-12-20	2010-12-01	三菱瓦斯化学株式会社	Method for producing bleached pulp

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE69004492T3 (en) *	1989-06-06	2001-11-15	Eka Nobel Ab, Bohus	Process for bleaching pulps containing lignocellulose.
SE470065C (en) *	1991-04-30	1996-01-15	Eka Nobel Ab	Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching
SE468355B (en) *	1991-04-30	1992-12-21	Eka Nobel Ab	CHEMISTRY OF CHEMICAL MASS THROUGH TREATMENT WITH COMPLEX PICTURES AND OZONE
SE469842C (en) *	1992-01-21	1996-01-15	Sunds Defibrator Ind Ab	Bleaching of chemical pulp with peroxide
SE469387B (en) *	1992-05-11	1993-06-28	Kamyr Ab	SEATING WHITE PILLOW WITHOUT USING CHLORIC CHEMICALS
BE1006056A3 (en) *	1992-07-06	1994-05-03	Solvay Interox	Method of laundering of chemical pulp.
MX9307413A (en) *	1992-11-27	1994-07-29	Eka Nobel Ab	PROCESS FOR WHITENING PULP CONTAINING LIGNOCELLULOSE.
BE1007700A3 (en) *	1993-11-04	1995-10-03	Solvay Interox	Method of laundering of chemical pulp.

1993
- 1993-11-10 BE BE9301251A patent/BE1007757A3/en not_active IP Right Cessation
1994
- 1994-10-28 BR BR9408027A patent/BR9408027A/en unknown
- 1994-10-28 EP EP94931025A patent/EP0728238B2/en not_active Expired - Lifetime
- 1994-10-28 ES ES94931025T patent/ES2129142T5/en not_active Expired - Lifetime
- 1994-10-28 WO PCT/EP1994/003590 patent/WO1995013420A1/en not_active Ceased
- 1994-10-28 AT AT94931025T patent/ATE175738T1/en not_active IP Right Cessation
- 1994-10-28 AU AU79939/94A patent/AU7993994A/en not_active Abandoned
- 1994-10-28 CA CA002176246A patent/CA2176246A1/en not_active Abandoned
- 1994-10-28 DE DE69416000T patent/DE69416000D1/en not_active Expired - Lifetime
- 1994-10-28 JP JP7513565A patent/JPH10500178A/en active Pending
- 1994-10-28 FI FI961975A patent/FI961975A7/en unknown
- 1994-10-31 ZA ZA948563A patent/ZA948563B/en unknown
- 1994-11-09 MA MA23693A patent/MA23369A1/en unknown
1996
- 1996-05-09 NO NO961889A patent/NO961889L/en not_active Application Discontinuation

Also Published As

Publication number	Publication date
FI961975L (en)	1996-07-09
EP0728238B2 (en)	2004-08-11
ZA948563B (en)	1995-06-30
ES2129142T5 (en)	2005-04-01
DE69416000D1 (en)	1999-02-25
BR9408027A (en)	1996-12-17
ES2129142T3 (en)	1999-06-01
FI961975A0 (en)	1996-05-09
ATE175738T1 (en)	1999-01-15
NO961889D0 (en)	1996-05-09
CA2176246A1 (en)	1995-05-18
WO1995013420A1 (en)	1995-05-18
AU7993994A (en)	1995-05-29
MA23369A1 (en)	1995-07-01
NO961889L (en)	1996-05-09
BE1007757A3 (en)	1995-10-17
EP0728238B1 (en)	1999-01-13
JPH10500178A (en)	1998-01-06
EP0728238A1 (en)	1996-08-28

Publication	Publication Date	Title
FI933104A7 (en)	1994-01-07	Method for delignifying chemical paper pulp
FI944928A7 (en)	1995-04-23	Method for bleaching chemical paper pulp
FI942969L (en)	1995-12-21	Method for delignification of chemical pulp
FI941764L (en)	1994-10-21	Method for bleaching lignocellulosic pulp
FI933105A7 (en)	1994-01-07	Method for delignifying chemical paper pulp
FI950526L (en)	1995-02-07	Pulp bleaching method
FI930954L (en)	1994-09-04	Method for bleaching pulp with chlorine-free chemicals
FI970303L (en)	1997-12-01	Method for bleaching chemical pulp
FI932848A7 (en)	1993-12-19	Method for bleaching paper pulp
FI961419A7 (en)	1996-03-29	Method for treating chemical paper pulp without using chlorine-containing chemicals
FI942968A7 (en)	1995-12-21	Method for delignification of chemical pulp
FI944348L (en)	1996-03-20	Method for bleaching kraft pulp
FI942970L (en)	1995-12-21	Method for delignification of chemical pulp
FI931710A7 (en)	1993-10-16	Method for bleaching de-inked pulp
FI960972A0 (en)	1996-03-01	Method for bleaching lignocellulosic pulp
FI942424L (en)	1994-11-27	Improved method for pulp bleaching
FI961895A7 (en)	1996-05-03	Method for bleaching chemical paper pulp
FI961975L (en)	1996-07-09	Method for bleaching chemical paper pulp
FI951166A7 (en)	1995-09-15	Pulp bleaching method
FI950785L (en)	1996-08-22	Method for bleaching pulp
FI943388A7 (en)	1995-01-16	Method for bleaching paper pulp
FI944144A7 (en)	1995-03-16	Method for bleaching paper pulp
FI950200L (en)	1995-09-17	Method for bleaching pulp
FI960297L (en)	1996-01-22	Method for ozone bleaching of paper pulp
FI952258A7 (en)	1995-05-10	Method for bleaching pulp