CA2071185C - Procede pour la delignification par l'oxygene de la ligno-cellulose - Google Patents

Procede pour la delignification par l'oxygene de la ligno-cellulose

Info

Publication number
CA2071185C
CA2071185C CA 2071185 CA2071185A CA2071185C CA 2071185 C CA2071185 C CA 2071185C CA 2071185 CA2071185 CA 2071185 CA 2071185 A CA2071185 A CA 2071185A CA 2071185 C CA2071185 C CA 2071185C
Authority
CA
Canada
Prior art keywords
pulp
improvement
delignifying
accordance
oxygen
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 - Fee Related
Application number
CA 2071185
Other languages
English (en)
Inventor
Jorge Luiz Colodette
Ana Sabrina Santos De Campos
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.)
Sa White Martins
Original Assignee
Sa White Martins
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
Priority claimed from BR919102462A external-priority patent/BR9102462A/pt
Application filed by Sa White Martins filed Critical Sa White Martins
Application granted granted Critical
Publication of CA2071185C publication Critical patent/CA2071185C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Paper (AREA)
CA 2071185 1991-06-14 1992-06-12 Procede pour la delignification par l'oxygene de la ligno-cellulose Expired - Fee Related CA2071185C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI9102462 1991-06-14
BR919102462A BR9102462A (pt) 1990-06-16 1991-06-14 Forno de pre-reducao de uma instalacao de reducao por fusao de minerio de ferro

Publications (1)

Publication Number Publication Date
CA2071185C true CA2071185C (fr) 1995-02-07

Family

ID=4052109

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2071185 Expired - Fee Related CA2071185C (fr) 1991-06-14 1992-06-12 Procede pour la delignification par l'oxygene de la ligno-cellulose

Country Status (1)

Country Link
CA (1) CA2071185C (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6440523B1 (en) 1996-08-23 2002-08-27 Weyerhaeuser Lyocell fiber made from alkaline pulp having low average degree of polymerization values
US6528163B2 (en) 1996-08-23 2003-03-04 Weyerhaeuser Company Lyocell fiber from sawdust pulp
US6686040B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products
US6686039B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps
US6685856B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products method
US6797113B2 (en) 1999-02-24 2004-09-28 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6440523B1 (en) 1996-08-23 2002-08-27 Weyerhaeuser Lyocell fiber made from alkaline pulp having low average degree of polymerization values
US6491788B2 (en) 1996-08-23 2002-12-10 Weyerhaeuser Company Process for making lyocell fibers from alkaline pulp having low average degree of polymerization values
US6528163B2 (en) 1996-08-23 2003-03-04 Weyerhaeuser Company Lyocell fiber from sawdust pulp
US6605350B1 (en) 1996-08-23 2003-08-12 Weyerhaeuser Company Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same
US6861023B2 (en) 1996-08-23 2005-03-01 Weyerhaeuser Company Process for making lyocell fiber from sawdust pulp
US7090744B2 (en) 1996-08-23 2006-08-15 Weyerhaeuser Company Process for making composition for conversion to lyocell fiber from sawdust
US6686040B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products
US6686039B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps
US6685856B2 (en) 1999-02-24 2004-02-03 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell products method
US6797113B2 (en) 1999-02-24 2004-09-28 Weyerhaeuser Company Use of thinnings and other low specific gravity wood for lyocell pulps method

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed