BR8906570A - Processo para deslignificar e branquear polpa lignocelulosica - Google Patents

Processo para deslignificar e branquear polpa lignocelulosica

Info

Publication number
BR8906570A
BR8906570A BR898906570A BR8906570A BR8906570A BR 8906570 A BR8906570 A BR 8906570A BR 898906570 A BR898906570 A BR 898906570A BR 8906570 A BR8906570 A BR 8906570A BR 8906570 A BR8906570 A BR 8906570A
Authority
BR
Brazil
Prior art keywords
designify
whiten
lignocellulosic pulp
lignocellulosic
pulp
Prior art date
Application number
BR898906570A
Other languages
English (en)
Portuguese (pt)
Inventor
Madhusudan Dattatraya Jayawant
Rupert D Souza
Jeffrey Shaocheng Hsieh
Original Assignee
Du Pont
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
Application filed by Du Pont filed Critical Du Pont
Publication of BR8906570A publication Critical patent/BR8906570A/pt

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
    • D21C1/00—Pretreatment of the finely-divided materials before digesting
    • D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
BR898906570A 1988-12-20 1989-12-19 Processo para deslignificar e branquear polpa lignocelulosica BR8906570A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28678288A 1988-12-20 1988-12-20

Publications (1)

Publication Number Publication Date
BR8906570A true BR8906570A (pt) 1990-09-04

Family

ID=23100136

Family Applications (1)

Application Number Title Priority Date Filing Date
BR898906570A BR8906570A (pt) 1988-12-20 1989-12-19 Processo para deslignificar e branquear polpa lignocelulosica

Country Status (9)

Country Link
EP (1) EP0377981A3 (fr)
JP (1) JPH02216290A (fr)
AU (1) AU4699989A (fr)
BR (1) BR8906570A (fr)
CA (1) CA2005369A1 (fr)
DK (1) DK648589A (fr)
FI (1) FI896085A0 (fr)
NO (1) NO895108L (fr)
ZA (1) ZA899775B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006056A3 (fr) * 1992-07-06 1994-05-03 Solvay Interox Procede pour le blanchiment d'une pate a papier chimique.
WO2021209586A1 (fr) * 2020-04-16 2021-10-21 Bim Kemi Ab Procédé de délignification

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE434283B (sv) * 1982-12-01 1984-07-16 Mo Och Domsjoe Ab Forfarande for delignifiering av cellulosamassa med kveveoxider och syrgas

Also Published As

Publication number Publication date
FI896085A0 (fi) 1989-12-19
JPH02216290A (ja) 1990-08-29
AU4699989A (en) 1990-06-28
DK648589D0 (da) 1989-12-19
CA2005369A1 (fr) 1990-06-20
DK648589A (da) 1990-06-21
EP0377981A3 (fr) 1992-06-24
NO895108D0 (no) 1989-12-19
NO895108L (no) 1990-06-21
ZA899775B (en) 1991-08-28
EP0377981A2 (fr) 1990-07-18

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Legal Events

Date Code Title Description
FD3 Appl. lapsed due to non-payment of renewal fee