DE3161711D1 - Process for the delignification of lignocellulosic material - Google Patents

Process for the delignification of lignocellulosic material

Info

Publication number
DE3161711D1
DE3161711D1 DE8181810386T DE3161711T DE3161711D1 DE 3161711 D1 DE3161711 D1 DE 3161711D1 DE 8181810386 T DE8181810386 T DE 8181810386T DE 3161711 T DE3161711 T DE 3161711T DE 3161711 D1 DE3161711 D1 DE 3161711D1
Authority
DE
Germany
Prior art keywords
delignification
lignocellulosic material
lignocellulosic
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE8181810386T
Other languages
German (de)
Inventor
Dieter Dr Werthemann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novartis AG
Original Assignee
Ciba Geigy AG
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 Ciba Geigy AG filed Critical Ciba Geigy AG
Application granted granted Critical
Publication of DE3161711D1 publication Critical patent/DE3161711D1/en
Expired legal-status Critical Current

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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping processes
DE8181810386T 1980-09-25 1981-09-21 Process for the delignification of lignocellulosic material Expired DE3161711D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH718380 1980-09-25

Publications (1)

Publication Number Publication Date
DE3161711D1 true DE3161711D1 (en) 1984-01-26

Family

ID=4321202

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181810386T Expired DE3161711D1 (en) 1980-09-25 1981-09-21 Process for the delignification of lignocellulosic material

Country Status (9)

Country Link
EP (1) EP0049221B1 (en)
JP (1) JPS5789691A (en)
AU (1) AU547453B2 (en)
BR (1) BR8106122A (en)
CA (1) CA1174810A (en)
DE (1) DE3161711D1 (en)
FI (1) FI69654C (en)
NO (1) NO813257L (en)
ZA (1) ZA816637B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6702921B2 (en) * 2001-05-01 2004-03-09 Ondeo Nalco Company Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent
US7351764B2 (en) 2004-03-31 2008-04-01 Nalco Company Methods to enhance brightness of pulp and optimize use of bleaching chemicals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ185937A (en) * 1976-12-13 1979-10-25 Australian Paper Manufacturers Delignification of lignocellulosic material with amine based liquor containing quinones or hydroqinones
US4248663A (en) * 1978-07-05 1981-02-03 Pulp And Paper Research Institute Of Canada Pulping with an alkaline liquor containing a cyclic keto compound and an amino compound

Also Published As

Publication number Publication date
CA1174810A (en) 1984-09-25
EP0049221A1 (en) 1982-04-07
ZA816637B (en) 1982-09-29
FI812935L (en) 1982-03-26
BR8106122A (en) 1982-06-15
FI69654B (en) 1985-11-29
JPS5789691A (en) 1982-06-04
AU7564281A (en) 1982-04-01
EP0049221B1 (en) 1983-12-21
NO813257L (en) 1982-03-26
FI69654C (en) 1986-03-10
AU547453B2 (en) 1985-10-24

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee