BR9007993A - Processo para alvejar polpa quimica - Google Patents

Processo para alvejar polpa quimica

Info

Publication number: BR9007993A
Authority: BR; Brazil
Prior art keywords: chemical pulp; white chemical; white; pulp; chemical
Prior art date: 1990-02-16

Application number

BR909007993A

Other languages

English (en)

Inventor

Chung-Li Lee

Original Assignee

Pulp Paper Res Inst

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.)

1990-02-16

Filing date

1990-02-16

Publication date

1992-10-13

1990-02-16 Application filed by Pulp Paper Res Inst filed Critical Pulp Paper Res Inst

1992-10-13 Publication of BR9007993A publication Critical patent/BR9007993A/pt

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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
- 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
- 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

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Detergent Compositions (AREA)
Compounds Of Unknown Constitution (AREA)

BR909007993A 1990-02-16 1990-02-16 Processo para alvejar polpa quimica BR9007993A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
PCT/CA1990/000052 WO1991012369A1 (en)	1990-02-16	1990-02-16	Bleaching of lignocellulosic material with dioxiranes

Publications (1)

Publication Number	Publication Date
BR9007993A true BR9007993A (pt)	1992-10-13

Family

ID=4172838

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR909007993A BR9007993A (pt)	1990-02-16	1990-02-16	Processo para alvejar polpa quimica

Country Status (8)

Country	Link
EP (1)	EP0515362B1 (pt)
JP (1)	JPH0718113B2 (pt)
AU (1)	AU641640B2 (pt)
BR (1)	BR9007993A (pt)
DE (1)	DE69008870T2 (pt)
FI (1)	FI102195B1 (pt)
NO (1)	NO923145D0 (pt)
WO (1)	WO1991012369A1 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AU653782B2 (en) *	1991-02-12	1994-10-13	Curators Of The University Of Missouri, The	Bleaching of lignocellulosic material with activated oxygen
IT1251180B (it) *	1991-08-28	1995-05-04	Ausimont Spa	Processo per la degradazione della lignina con diossirani
US6706143B1 (en)	1996-03-19	2004-03-16	International Paper Company	Minimizing chlorinated organics in pulp bleaching processes
JP2002302888A (ja) *	2001-04-05	2002-10-18	Oji Paper Co Ltd	漂白パルプの製造方法

1990
- 1990-02-16 BR BR909007993A patent/BR9007993A/pt unknown
- 1990-02-16 WO PCT/CA1990/000052 patent/WO1991012369A1/en not_active Ceased
- 1990-02-16 AU AU51686/90A patent/AU641640B2/en not_active Ceased
- 1990-02-16 DE DE69008870T patent/DE69008870T2/de not_active Expired - Fee Related
- 1990-02-16 JP JP2503855A patent/JPH0718113B2/ja not_active Expired - Lifetime
- 1990-02-16 EP EP90903735A patent/EP0515362B1/en not_active Expired - Lifetime
1992
- 1992-08-12 NO NO1992923145A patent/NO923145D0/no unknown
- 1992-08-14 FI FI923644A patent/FI102195B1/fi active

Also Published As

Publication number	Publication date
WO1991012369A1 (en)	1991-08-22
NO923145L (no)	1992-08-12
FI102195B (fi)	1998-10-30
NO923145D0 (no)	1992-08-12
EP0515362A1 (en)	1992-12-02
JPH05504173A (ja)	1993-07-01
JPH0718113B2 (ja)	1995-03-01
DE69008870T2 (de)	1994-08-18
EP0515362B1 (en)	1994-05-11
AU5168690A (en)	1991-09-03
FI102195B1 (fi)	1998-10-30
FI923644A0 (fi)	1992-08-14
FI923644L (fi)	1992-08-14
AU641640B2 (en)	1993-09-30
DE69008870D1 (de)	1994-06-16

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Legal Events

Date	Code	Title	Description
1998-12-22	KF	Request for proof of payment of annual fee
2000-04-18	FD5	Application fees: dismissal - article 86 of industrial property law