FI924448L - Foerfarande foer foerbaettrande av selektiviteten vid delignifiering av kemisk pappersmassa - Google Patents

Foerfarande foer foerbaettrande av selektiviteten vid delignifiering av kemisk pappersmassa Download PDF

Info

Publication number: FI924448L
Authority: FI; Finland
Prior art keywords: selectiviteten; papersmas; delignifiering; kemisk; vid
Prior art date: 1991-10-04

Application number

FI924448A

Other languages

English (en)

Other versions

FI924448A0 (fi

Inventor

Roy T Hill

Original Assignee

Interox America

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.)

1991-10-04

Filing date

1992-10-02

Publication date

1993-04-05

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27118364&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI924448(L) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1992-10-02 Application filed by Interox America filed Critical Interox America

1992-10-02 Publication of FI924448A0 publication Critical patent/FI924448A0/fi

1993-04-05 Publication of FI924448L publication Critical patent/FI924448L/fi

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
- D21C9/166—Bleaching ; Apparatus therefor with per compounds with peracids
- 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

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)
Preliminary Treatment Of Fibers (AREA)
External Artificial Organs (AREA)

FI924448A 1991-10-04 1992-10-02 Foerfarande foer foerbaettrande av selektiviteten vid delignifiering av kemisk pappersmassa FI924448L (fi)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US77085991A	1991-10-04	1991-10-04
US94283892A	1992-09-10	1992-09-10

Publications (2)

Publication Number	Publication Date
FI924448A0 FI924448A0 (fi)	1992-10-02
FI924448L true FI924448L (fi)	1993-04-05

Family

ID=27118364

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI924448A FI924448L (fi)	1991-10-04	1992-10-02	Foerfarande foer foerbaettrande av selektiviteten vid delignifiering av kemisk pappersmassa

Country Status (9)

Country	Link
EP (2)	EP0844328A3 (fi)
JP (1)	JPH05195467A (fi)
AT (1)	ATE168149T1 (fi)
AU (1)	AU660326B2 (fi)
DE (1)	DE69226143T2 (fi)
ES (1)	ES2120984T3 (fi)
FI (1)	FI924448L (fi)
NZ (1)	NZ244592A (fi)
PL (1)	PL171990B1 (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2269191A (en) *	1992-07-29	1994-02-02	Solvay Interox Ltd	Method of treating aqueous process liquors
WO1994012722A1 (en) *	1992-11-27	1994-06-09	Eka Nobel Ab	Process for bleaching of lignocellulose-containing pulp
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
CA2149648C (en) *	1992-11-27	2000-09-19	Magnus Linsten	Process for delignification of lignocellulose-containing pulp
DE19516151A1 (de)	1995-05-03	1996-11-07	Sven Siegle	Verfahren zur Herstellung einer Pulpe aus zellulosehaltigem Material, die Pulpe selbst und deren Verwendung
ATE244752T1 (de) *	1996-03-04	2003-07-15	Procter & Gamble	Wäsche-vorbehandlungsverfahren und bleichmittelzusammensetzungen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1014536A (en) *	1910-05-24	1912-01-09	Minosaku Takahashi	Vessel-closure.
FR1014536A (fr) *	1940-04-01	1952-08-18	Du Pont	Perfectionnements au blanchiment des pâtes de bois
SE420430B (sv) *	1978-02-17	1981-10-05	Mo Och Domsjoe Ab	Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
DE3005947B1 (de) *	1980-02-16	1981-01-29	Degussa	Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure
US4793898A (en) *	1985-02-22	1988-12-27	Oy Keskuslaboratorio - Centrallaboratorium Ab	Process for bleaching organic peroxyacid cooked material with an alkaline solution of hydrogen peroxide

1992
- 1992-09-25 ES ES92202952T patent/ES2120984T3/es not_active Expired - Lifetime
- 1992-09-25 EP EP97122629A patent/EP0844328A3/fr not_active Withdrawn
- 1992-09-25 EP EP92202952A patent/EP0535741B1/fr not_active Revoked
- 1992-09-25 AT AT92202952T patent/ATE168149T1/de not_active IP Right Cessation
- 1992-09-25 DE DE69226143T patent/DE69226143T2/de not_active Expired - Fee Related
- 1992-09-28 AU AU25382/92A patent/AU660326B2/en not_active Ceased
- 1992-10-01 PL PL92296122A patent/PL171990B1/pl unknown
- 1992-10-02 FI FI924448A patent/FI924448L/fi not_active Application Discontinuation
- 1992-10-02 NZ NZ244592A patent/NZ244592A/en unknown
- 1992-10-05 JP JP4266321A patent/JPH05195467A/ja active Pending

Also Published As

Publication number	Publication date
EP0844328A2 (fr)	1998-05-27
PL171990B1 (pl)	1997-07-31
EP0535741B1 (fr)	1998-07-08
ATE168149T1 (de)	1998-07-15
AU660326B2 (en)	1995-06-22
AU2538292A (en)	1993-04-22
FI924448A0 (fi)	1992-10-02
NZ244592A (en)	1994-02-25
EP0844328A3 (fr)	1998-07-15
JPH05195467A (ja)	1993-08-03
PL296122A1 (en)	1993-06-28
DE69226143D1 (de)	1998-08-13
ES2120984T3 (es)	1998-11-16
DE69226143T2 (de)	1999-02-25
EP0535741A1 (fr)	1993-04-07

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Legal Events

Date	Code	Title	Description
1998-12-31	FD	Application lapsed