DE60200662D1 - Process for bleaching mechanical pulp - Google Patents

Process for bleaching mechanical pulp

Info

Publication number: DE60200662D1
Authority: DE; Germany
Prior art keywords: mechanical pulp; bleaching mechanical; bleaching; pulp; mechanical
Prior art date: 2001-05-09
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

DE60200662T

Other languages

German (de)

Other versions

DE60200662T2 (en

Inventor

Maurice Joseph Albert Hache

Rangamannar Goda

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.)

Rohm and Haas Co

Original Assignee

Rohm and Haas Co

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.)

2001-05-09

Filing date

2002-04-30

Publication date

2004-07-29

2002-04-30 Application filed by Rohm and Haas Co filed Critical Rohm and Haas Co

2004-07-29 Publication of DE60200662D1 publication Critical patent/DE60200662D1/en

2005-07-07 Application granted granted Critical

2005-07-07 Publication of DE60200662T2 publication Critical patent/DE60200662T2/en

2022-05-01 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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
- D21C9/1026—Other features in bleaching processes

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

DE60200662T 2001-05-09 2002-04-30 Process for bleaching mechanical pulps Expired - Fee Related DE60200662T2 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US28993701P	2001-05-09	2001-05-09
US289937P		2001-05-09

Publications (2)

Publication Number	Publication Date
DE60200662D1 true DE60200662D1 (en)	2004-07-29
DE60200662T2 DE60200662T2 (en)	2005-07-07

Family

ID=23113814

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE60200662T Expired - Fee Related DE60200662T2 (en)	2001-05-09	2002-04-30	Process for bleaching mechanical pulps

Country Status (6)

Country	Link
US (1)	US20030062138A1 (en)
EP (1)	EP1258559B1 (en)
JP (1)	JP2002339282A (en)
CA (1)	CA2384399A1 (en)
DE (1)	DE60200662T2 (en)
NO (1)	NO20022118L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US7648032B2 (en) *	2004-03-23	2010-01-19	Imerys Pigments, Inc.	Effective reductive bleaching of mineral slurries
PT2288752E (en) *	2008-06-20	2014-05-07	Int Paper Co	Composition and recording sheet with improved optical properties
US9932709B2 (en) *	2013-03-15	2018-04-03	Ecolab Usa Inc.	Processes and compositions for brightness improvement in paper production
EP2679690A1 (en)	2009-06-23	2014-01-01	American Process, Inc.	Process for producing alcohol and other bioproducts from biomass used in thermal conversion to energy and stepwise enzymatic hydrolysis process for cellulosic fiber

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4731160A (en) *	1986-03-19	1988-03-15	Kamyr, Inc.	Drainage characteristics of mechanical pulp
FR2634233B1 (en) *	1988-07-12	1995-04-14	Atochem	PROCESS FOR PRODUCING BLANCHED CHEMICOTHERMOMECHANICAL PASTES
US5298118A (en) *	1988-07-12	1994-03-29	Atochem	Preparation of bleached chemithermomechanical pulp
CA1340348C (en) *	1989-03-23	1999-01-26	Michel Barbe	Bleaching process for the production of high bright pulps
US5118389A (en) *	1990-07-06	1992-06-02	Ici Canada Inc.	Two-stage peroxide bleaching process using different amounts of peroxide on different portions of mechanical pulp
US5223091A (en) *	1991-11-25	1993-06-29	Macmillan Bloedel Limited	Method of brightening mechanical pulp using silicate-free peroxide bleaching
ES2113056T3 (en) *	1993-12-14	1998-04-16	Ecc Int Ltd	RECOVERY OF WATER AND SOLIDS IN A PAPER FACTORY.
FI962177A7 (en) *	1996-05-23	1997-11-24	Valmet Corp	Method for organizing water cycles in a paper mill
JPH1076277A (en) *	1996-09-04	1998-03-24	Lion Corp	Water treatment chemical composition and water treatment method using the same
KR100319491B1 (en) *	1998-12-08	2002-04-22	김충섭	Calcium hardness control method of recycled papermaking process water
SE513790C2 (en) *	1999-03-08	2000-11-06	Mo Och Domsjoe Ab	Bleaching of mechanical pulp with reducing bleach
JP2001164487A (en) *	1999-12-08	2001-06-19	Hymo Corp	White water treatment method
JP4213320B2 (en) *	1999-12-09	2009-01-21	ハイモ株式会社	Recovering valuable materials in papermaking white water

2002
- 2002-04-12 US US10/122,021 patent/US20030062138A1/en not_active Abandoned
- 2002-04-30 EP EP02253048A patent/EP1258559B1/en not_active Expired - Lifetime
- 2002-04-30 DE DE60200662T patent/DE60200662T2/en not_active Expired - Fee Related
- 2002-05-01 CA CA002384399A patent/CA2384399A1/en not_active Abandoned
- 2002-05-03 NO NO20022118A patent/NO20022118L/en not_active Application Discontinuation
- 2002-05-09 JP JP2002133662A patent/JP2002339282A/en active Pending

Also Published As

Publication number	Publication date
NO20022118D0 (en)	2002-05-03
EP1258559A1 (en)	2002-11-20
NO20022118L (en)	2002-11-11
EP1258559B1 (en)	2004-06-23
US20030062138A1 (en)	2003-04-03
JP2002339282A (en)	2002-11-27
DE60200662T2 (en)	2005-07-07
CA2384399A1 (en)	2002-11-09

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Legal Events

Date	Code	Title	Description
2005-08-11	8364	No opposition during term of opposition
2006-02-09	8339	Ceased/non-payment of the annual fee