FI904662A0 - Ligninavlaegsning ur lignocellulosa innehaollande fiber. - Google Patents

Ligninavlaegsning ur lignocellulosa innehaollande fiber.

Info

Publication number: FI904662A0
Authority: FI; Finland
Prior art keywords: lignocellulosa; ligninavlaegsning; innehaollande; fiber; lignocellulosa innehaollande
Prior art date: 1989-11-17

Application number

FI904662A

Other languages

English (en)

Other versions

FI904662A (fi

Inventor

Augustine Ivanhoe Dalton

Original Assignee

Air Prod & Chem

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.)

1989-11-17

Filing date

1990-09-21

Publication date

1990-09-21

1990-09-21 Application filed by Air Prod & Chem filed Critical Air Prod & Chem

1990-09-21 Publication of FI904662A0 publication Critical patent/FI904662A0/fi

1991-05-18 Publication of FI904662A publication Critical patent/FI904662A/fi

Links

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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
- 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

Landscapes

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

FI904662A 1989-11-17 1990-09-21 Ligninavlaegsning ur lignocellulosa innehaollande fiber. FI904662A (fi)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US43855189A	1989-11-17	1989-11-17

Publications (2)

Publication Number	Publication Date
FI904662A0 true FI904662A0 (fi)	1990-09-21
FI904662A FI904662A (fi)	1991-05-18

Family

ID=23741064

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI904662A FI904662A (fi)	1989-11-17	1990-09-21	Ligninavlaegsning ur lignocellulosa innehaollande fiber.

Country Status (8)

Country	Link
EP (1)	EP0429767A1 (fi)
JP (1)	JPH03161586A (fi)
BR (1)	BR9004674A (fi)
CA (1)	CA2023916A1 (fi)
FI (1)	FI904662A (fi)
MY (1)	MY106117A (fi)
NO (1)	NO903893L (fi)
ZA (1)	ZA907008B (fi)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI925159A0 (fi) *	1992-11-13	1992-11-13	Ahlstroem Oy	Foerfarande foer blekning av massa
US20090000751A1 (en) *	2007-06-29	2009-01-01	Caifang Yin	Bleaching process with at least one extraction stage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4568420B1 (en) *	1984-12-03	1999-03-02	Int Paper Co	Multi-stage bleaching process including an enhanced oxidative extraction stage
CA1251903A (en) *	1985-06-17	1989-04-04	Pulp And Paper Research Institute Of Canada	Alkaline-peroxide-oxygen treatment of unbleached and chlorinated chemical pulps
JPS6416958A (en) *	1987-07-13	1989-01-20	Toshiba Corp	Apparatus for monitoring condition of waste liquid

1990
- 1990-08-23 CA CA002023916A patent/CA2023916A1/en not_active Abandoned
- 1990-08-23 EP EP90116168A patent/EP0429767A1/en not_active Ceased
- 1990-08-28 MY MYPI90001461A patent/MY106117A/en unknown
- 1990-09-03 ZA ZA907008A patent/ZA907008B/xx unknown
- 1990-09-06 NO NO90903893A patent/NO903893L/no unknown
- 1990-09-19 BR BR909004674A patent/BR9004674A/pt unknown
- 1990-09-20 JP JP2251672A patent/JPH03161586A/ja active Pending
- 1990-09-21 FI FI904662A patent/FI904662A/fi not_active Application Discontinuation

Also Published As

Publication number	Publication date
ZA907008B (en)	1992-05-27
FI904662A (fi)	1991-05-18
BR9004674A (pt)	1991-09-10
EP0429767A1 (en)	1991-06-05
JPH03161586A (ja)	1991-07-11
CA2023916A1 (en)	1991-05-12
NO903893D0 (no)	1990-09-06
MY106117A (en)	1995-03-31
NO903893L (no)	1991-05-21

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Legal Events

Date	Code	Title	Description
2004-08-31	FA	Application withdrawn	Owner name: AIR PRODUCTS AND CHEMICALS, INC.