BRPI0503979A - processo para fabricar uma composição para conversão em fibra de lyocell, e, seqüência de alvejamento de polpa - Google Patents

processo para fabricar uma composição para conversão em fibra de lyocell, e, seqüência de alvejamento de polpa

Info

Publication number
BRPI0503979A
BRPI0503979A BRPI0503979-7A BRPI0503979A BRPI0503979A BR PI0503979 A BRPI0503979 A BR PI0503979A BR PI0503979 A BRPI0503979 A BR PI0503979A BR PI0503979 A BRPI0503979 A BR PI0503979A
Authority
BR
Brazil
Prior art keywords
pulp
bleaching sequence
composition
fabricating
lyocell fiber
Prior art date
Application number
BRPI0503979-7A
Other languages
English (en)
Inventor
Mengkui Luo
Original Assignee
Weyerhaeuser Co
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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Publication of BRPI0503979A publication Critical patent/BRPI0503979A/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
    • 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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B16/00—Regeneration of cellulose
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/02—Cellulose; Modified cellulose
    • C08L1/06—Cellulose hydrate
    • 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
    • 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
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Paper (AREA)

Abstract

"PROCESSO PARA FABRICAR UMA COMPOSIçãO PARA CONVERSãO EM FIBRA DE LYOCELL, E, SEQüêNCIA DE ALVEJAMENTO DE POLPA". Um processo de pH elevado e um de pH baixo para a redução do grau de polimerização de uma polpa tendo um teor de hemicelulose de pelo menos 7%. O pH elevado é maior do que 8, e no processo de pH baixo é de 2 a 8. O processo de pH elevado reduz o grau de polimerização sem substancialmente aumentar o índice de cobre. O processo de pH baixo requer um tratamento subseqüente com álcali para reduzir o índice de cobre da polpa a menos que 2. O processo pode ser praticado em fábricas de polpa com uma seqüência de alvejamento tendo um ou mais estágios E ou D. No final da seqüência de alvejamento, uma polpa tendo um grau de polimerização de 200 a 1100, um índice de cobre menor que 2, e um teor de hemicelulose de pelo menos 7% é provido. A polpa pode ser usada para fazer fibras de lyocell.
BRPI0503979-7A 2004-09-30 2005-09-28 processo para fabricar uma composição para conversão em fibra de lyocell, e, seqüência de alvejamento de polpa BRPI0503979A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/956,915 US20060070711A1 (en) 2004-09-30 2004-09-30 Low pH treatment of pulp in a bleach sequence to produce pulp having low D.P. and low copper number for use in lyocell manufacture

Publications (1)

Publication Number Publication Date
BRPI0503979A true BRPI0503979A (pt) 2006-05-09

Family

ID=35307869

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0503979-7A BRPI0503979A (pt) 2004-09-30 2005-09-28 processo para fabricar uma composição para conversão em fibra de lyocell, e, seqüência de alvejamento de polpa

Country Status (9)

Country Link
US (1) US20060070711A1 (pt)
EP (1) EP1643031B1 (pt)
AR (1) AR054686A1 (pt)
AT (1) ATE366333T1 (pt)
BR (1) BRPI0503979A (pt)
CA (1) CA2520236C (pt)
DE (1) DE602005001539T2 (pt)
NO (1) NO20054496L (pt)
ZA (1) ZA200507858B (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX382645B (es) 2009-05-28 2025-03-13 Gp Cellulose Gmbh Celulosa modificada a partir de fibra kraft química y métodos para elaborarla y su uso.
US9512563B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Surface treated modified cellulose from chemical kraft fiber and methods of making and using same
US9511167B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Modified cellulose from chemical kraft fiber and methods of making and using the same
US9512237B2 (en) 2009-05-28 2016-12-06 Gp Cellulose Gmbh Method for inhibiting the growth of microbes with a modified cellulose fiber
WO2012170183A1 (en) 2011-05-23 2012-12-13 Gp Cellulose Gmbh Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same
TWI628331B (zh) 2012-01-12 2018-07-01 Ｇｐ纖維股份有限公司 具有降低黃化性質之低黏度牛皮紙纖維及其製造與使用方法
JP6242859B2 (ja) 2012-04-18 2017-12-06 ゲーペー ツェルローゼ ゲーエムベーハー ビスコースおよび他の二次的繊維製品の製造のための、パルプを処理して、クラフトパルプの繊維への取り込みを改良するための界面活性剤の使用
CA2898417C (en) * 2013-02-08 2021-07-27 Arthur J. Nonni Softwood kraft fiber having an improved .alpha.-cellulose content and its use in the production of chemical cellulose products
MX364379B (es) 2013-03-14 2019-04-24 Gp Cellulose Gmbh Un metodo para preparar una fibra kraft altamente funcional y de baja viscosidad, usando una secuencia de blanqueamiento acido, y una fibra hecha por el proceso.
CN105143547B (zh) 2013-03-15 2018-05-01 Gp 纤维素股份有限公司 具有增高羧基含量的低粘度牛皮纸纤维及其制造和使用方法
CN105525376B (zh) * 2015-11-27 2018-03-27 济南圣泉集团股份有限公司 一种再生纤维素纤维及其制备方法
WO2018093697A1 (en) 2016-11-16 2018-05-24 Gp Cellulose Gmbh Modified cellulose from chemical fiber and methods of making and using the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429717A (en) * 1986-12-22 1995-07-04 Aga Aktiebolag Method of washing of alkaline pulp by adding carbon dioxide to the pulp
SE9401771D0 (sv) * 1994-05-24 1994-05-24 Hans Olof Samuelson Process for removal of metal compounds in lignocellulosic pulp
DE19620241A1 (de) * 1996-05-20 1997-11-27 Patt R Prof Dr Verfahren zum Delignifizieren von Zellstoffen und Verwendung eines Katalysators
US6331354B1 (en) * 1996-08-23 2001-12-18 Weyerhaeuser Company Alkaline pulp having low average degree of polymerization values and method of producing the same
US6210801B1 (en) * 1996-08-23 2001-04-03 Weyerhaeuser Company Lyocell fibers, and compositions for making same
US6235392B1 (en) * 1996-08-23 2001-05-22 Weyerhaeuser Company Lyocell fibers and process for their preparation
US6743332B2 (en) * 2001-05-16 2004-06-01 Weyerhaeuser Company High temperature peroxide bleaching of mechanical pulps
US6833187B2 (en) * 2003-04-16 2004-12-21 Weyerhaeuser Company Unbleached pulp for lyocell products

Also Published As

Publication number Publication date
US20060070711A1 (en) 2006-04-06
NO20054496D0 (no) 2005-09-28
CA2520236A1 (en) 2006-03-30
DE602005001539T2 (de) 2008-03-13
AR054686A1 (es) 2007-07-11
ZA200507858B (en) 2005-09-28
DE602005001539D1 (de) 2007-08-16
NO20054496L (no) 2006-03-31
ATE366333T1 (de) 2007-07-15
EP1643031B1 (en) 2007-07-04
CA2520236C (en) 2008-11-18
EP1643031A1 (en) 2006-04-05

Similar Documents

Publication Publication Date Title
BR0110890A (pt) Polpa, fibra liocel, e, processos para produzir uma composição para conversão em fibra liocel, e para produzir fibras liocel
BR9908775A (pt) Polpa, fibra de liocel, processos para produzir uma composição para conversão em fibra de liocel, e para produzir fibras de liocel, pelìcula de liocel, e, corpo moldado
BRPI0317837B8 (pt) disposição de implante e método para produzir um implante
BRPI0819267A8 (pt) Método de produção de um painel de placa de fibra de gesso
BR0302547A (pt) Fibra inorgânica vìtrea resistente a altas temperaturas e processo de fabricação da mesma
BR0008283A (pt) Composto compreendendo uma pluralidade de filamentos e uma pluralidade de ilhas-matriz
BR112013004875A2 (pt) processo para melhor a hidrólise de celulose em sistemas de alta consistência
BR9916644A (pt) Fibras de madeira kraft para carboxialquilcelulose
BR9911229A (pt) Polpa, produtos de papel e papelão de partìculasdonax arundo
BRPI0413318A (pt) forma de administração à prova de abuso termicamente formada sem extrusão e processo para a produção da mesma
BRPI0503977A (pt) processo para fabricar uma composição para conversão em fibra de lyocell, e, seqüência de alvejamento de polpa
CN102174760A (zh) 一种沙柳化学机械法制浆工艺
CA2520236A1 (en) Low ph treatment of pulp in a bleach sequence to produce pulp having low d.p. and low copper number for use in lyocell manufacture
BR112023001469A2 (pt) Material compósito fibroso
BRPI0703055A (pt) método para processar uma polpa com alto teor de hemicelulose na fabricação de viscose
BR0016383A (pt) Polìmeros aromáticos de monovinilideno com propriedades melhoradas e um processo para sua preparação
BR9806907A (pt) Processo para preparação de placas de fibra
ITPD20050206A1 (it) Biomateriali in forma di fibra da impiegarsi come dispositivi medici nel trattamento delle ferite e loro processi di produzione
BR112023022770A2 (pt) Produto de isolamento de fibra fina
BR9912486A (pt) Processo para produzir uma placa de fibra, e, placa de fibra
BR0011995A (pt) Fabricação de tecido de polìmero superabsorvente e fibra
BR0314746A (pt) Processo de produção de fibras de polipropileno altamente resistentes
BR0208115A (pt) Processo para a produçaõ de polpa
BR9909030A (pt) Arranjo em conexão com uma linha de revestimento de fibra
BR0307198A (pt) Fibras de liocel de alta absorvência e método para produzir as mesmas

Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE 5A. ANUIDADE(S).

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2094 DE 22/02/2011.