NZ244592A - Improving the selectivity of delignification of chemical pulp using an - Google Patents

Improving the selectivity of delignification of chemical pulp using an

Info

Publication number
NZ244592A
NZ244592A NZ244592A NZ24459292A NZ244592A NZ 244592 A NZ244592 A NZ 244592A NZ 244592 A NZ244592 A NZ 244592A NZ 24459292 A NZ24459292 A NZ 24459292A NZ 244592 A NZ244592 A NZ 244592A
Authority
NZ
New Zealand
Prior art keywords
process according
acid
treatment
organic peroxyacid
pulp
Prior art date
Application number
NZ244592A
Other languages
English (en)
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.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27118364&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=NZ244592(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to CZ95700A priority Critical patent/CZ70095A3/cs
Priority to PCT/US1992/008002 priority patent/WO1994006925A1/en
Priority to AU26543/92A priority patent/AU2654392A/en
Priority to JP50803294A priority patent/JP3145711B2/ja
Priority to HU9500950A priority patent/HU213760B/hu
Priority to EP92920655A priority patent/EP0662142A1/de
Priority to NZ244529A priority patent/NZ244529A/en
Priority to ZA927518A priority patent/ZA927518B/xx
Application filed by Interox America filed Critical Interox America
Priority to PT100935A priority patent/PT100935A/pt
Priority to CN92112653A priority patent/CN1086263A/zh
Publication of NZ244592A publication Critical patent/NZ244592A/en

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
    • D21C9/166—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)
  • External Artificial Organs (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
NZ244592A 1991-10-04 1992-10-02 Improving the selectivity of delignification of chemical pulp using an NZ244592A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EP92920655A EP0662142A1 (de) 1992-09-18 1992-09-18 Herstellung von glyoxylsäure durch oxidation von glycolsäure in gegenwart immobilisierter glycolat-oxidase und katalase
PCT/US1992/008002 WO1994006925A1 (en) 1992-09-18 1992-09-18 Production of glyoxylic acid by oxidizing glycolic acid in the presence of immobilized glycolate oxidase and catalase
AU26543/92A AU2654392A (en) 1992-09-18 1992-09-18 Production of glyoxylic acid by oxidizing glycolic acid in the presence of immobilized glycolate oxidase and catalase
JP50803294A JP3145711B2 (ja) 1992-09-18 1992-09-18 固定化グリコレートオキシダーゼ及びカタラーゼの存在下における，グリコール酸の酸化によるグリオキシル酸の製造
HU9500950A HU213760B (en) 1992-09-18 1992-09-18 Process for the production of glyoxylic acid by enzyme catalysed oxidation of glycolic acid
CZ95700A CZ70095A3 (en) 1992-09-18 1992-09-18 Preparation of glyoxylic acid by oxidizing glycollic acid in the presence of immobilized glycolate oxidase and catalase
NZ244529A NZ244529A (en) 1992-09-18 1992-09-28 Production of glyoxylic acid comprising contacting glycolic acid, glycolate oxidase and catalase in an aqueous solution
ZA927518A ZA927518B (en) 1992-09-18 1992-09-30 Production of glyoxylic acid by oxidizing glycolic acid in the presence of immobilized glycolate oxidase and catalase
PT100935A PT100935A (pt) 1992-09-18 1992-10-07 Processo para a preparacao de acido glioxilico por oxidacao de acido glicolico na presenca de glicolato oxidase e catalase imobilizadas
CN92112653A CN1086263A (zh) 1992-09-18 1992-10-26 二羟乙酸的生产方法

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 (1)

Publication Number Publication Date
NZ244592A true NZ244592A (en) 1994-02-25

Family

ID=27118364

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ244592A NZ244592A (en) 1991-10-04 1992-10-02 Improving the selectivity of delignification of chemical pulp using an

Country Status (9)

Country Link
EP (2) EP0844328A3 (de)
JP (1) JPH05195467A (de)
AT (1) ATE168149T1 (de)
AU (1) AU660326B2 (de)
DE (1) DE69226143T2 (de)
ES (1) ES2120984T3 (de)
FI (1) FI924448A (de)
NZ (1) NZ244592A (de)
PL (1) PL171990B1 (de)

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
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
ES2096441T3 (es) * 1992-11-27 1997-03-01 Eka Chemicals Ab Procedimiento para deslignificar pasta que contiene lignocelulosa.
CA2149649C (en) * 1992-11-27 2000-09-19 Magnus Linsten Process for bleaching 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
EP0794245B1 (de) * 1996-03-04 2003-07-09 The Procter & Gamble Company 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

Also Published As

Publication number Publication date
EP0844328A3 (de) 1998-07-15
DE69226143T2 (de) 1999-02-25
ES2120984T3 (es) 1998-11-16
DE69226143D1 (de) 1998-08-13
JPH05195467A (ja) 1993-08-03
AU2538292A (en) 1993-04-22
FI924448A0 (fi) 1992-10-02
EP0535741A1 (de) 1993-04-07
PL296122A1 (en) 1993-06-28
AU660326B2 (en) 1995-06-22
EP0844328A2 (de) 1998-05-27
PL171990B1 (pl) 1997-07-31
EP0535741B1 (de) 1998-07-08
ATE168149T1 (de) 1998-07-15
FI924448A (fi) 1993-04-05

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