DK648589A - PROCEDURES FOR DELIGNIFICATION AND BLACKING OF LIGNOCELLULOS PULP - Google Patents

PROCEDURES FOR DELIGNIFICATION AND BLACKING OF LIGNOCELLULOS PULP Download PDF

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Publication number
DK648589A
DK648589A DK648589A DK648589A DK648589A DK 648589 A DK648589 A DK 648589A DK 648589 A DK648589 A DK 648589A DK 648589 A DK648589 A DK 648589A DK 648589 A DK648589 A DK 648589A
Authority
DK
Denmark
Prior art keywords
lignocellulos
delignification
blacking
pulp
procedures
Prior art date
Application number
DK648589A
Other languages
Danish (da)
Other versions
DK648589D0 (en
Inventor
Madhusudan Dattatraya Jayawant
Souza Rupert D
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 DK648589D0 publication Critical patent/DK648589D0/en
Publication of DK648589A publication Critical patent/DK648589A/en

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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
DK648589A 1988-12-20 1989-12-19 PROCEDURES FOR DELIGNIFICATION AND BLACKING OF LIGNOCELLULOS PULP DK648589A (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
DK648589D0 DK648589D0 (en) 1989-12-19
DK648589A true DK648589A (en) 1990-06-21

Family

ID=23100136

Family Applications (1)

Application Number Title Priority Date Filing Date
DK648589A DK648589A (en) 1988-12-20 1989-12-19 PROCEDURES FOR DELIGNIFICATION AND BLACKING OF LIGNOCELLULOS PULP

Country Status (9)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006056A3 (en) * 1992-07-06 1994-05-03 Solvay Interox Method of laundering of chemical pulp.
WO2021209586A1 (en) * 2020-04-16 2021-10-21 Bim Kemi Ab Delignification process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE434283B (en) * 1982-12-01 1984-07-16 Mo Och Domsjoe Ab PROCEDURE FOR DELIGNIFICATION OF CELLULOSAMASSA WITH NITROGEN OXIDES AND Oxygen

Also Published As

Publication number Publication date
NO895108D0 (en) 1989-12-19
BR8906570A (en) 1990-09-04
EP0377981A3 (en) 1992-06-24
EP0377981A2 (en) 1990-07-18
AU4699989A (en) 1990-06-28
DK648589D0 (en) 1989-12-19
JPH02216290A (en) 1990-08-29
FI896085A0 (en) 1989-12-19
CA2005369A1 (en) 1990-06-20
NO895108L (en) 1990-06-21
ZA899775B (en) 1991-08-28

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment