BR8900300A - PROCESS FOR OBTAINING CELLULOSE - Google Patents
PROCESS FOR OBTAINING CELLULOSEInfo
- Publication number
- BR8900300A BR8900300A BR8900300A BR8900300A BR8900300A BR 8900300 A BR8900300 A BR 8900300A BR 8900300 A BR8900300 A BR 8900300A BR 8900300 A BR8900300 A BR 8900300A BR 8900300 A BR8900300 A BR 8900300A
- Authority
- BR
- Brazil
- Prior art keywords
- obtaining cellulose
- cellulose
- obtaining
- Prior art date
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
- D21C3/26—Multistage processes
-
- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/0007—Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for
-
- 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
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
-
- 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
- D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone
-
- 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
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP88810035A EP0325891A1 (en) | 1988-01-25 | 1988-01-25 | Process for obtaining bleached cellulose pulp |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8900300A true BR8900300A (en) | 1989-09-19 |
Family
ID=8200569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8900300A BR8900300A (en) | 1988-01-25 | 1989-01-26 | PROCESS FOR OBTAINING CELLULOSE |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0325891A1 (en) |
JP (1) | JPH01221586A (en) |
BR (1) | BR8900300A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4107356C1 (en) * | 1991-03-08 | 1992-11-05 | Acetocell Gmbh & Co Kg, 7162 Gschwend, De | |
DE4107357C1 (en) * | 1991-03-08 | 1992-11-05 | Acetocell Gmbh & Co Kg, 7162 Gschwend, De | |
DE4107354C1 (en) * | 1991-03-08 | 1992-11-05 | Acetocell Gmbh & Co Kg, 7162 Gschwend, De | |
JP2644635B2 (en) * | 1991-03-25 | 1997-08-25 | 林野庁森林総合研究所長 | Pulp, its production method, wood component separation method and its apparatus |
DE4228171C2 (en) * | 1992-08-25 | 1995-06-14 | Kaemmerer Projekt Agentur Gmbh | Process for the production of cellulose |
DE19516151A1 (en) * | 1995-05-03 | 1996-11-07 | Sven Siegle | Process for the production of a pulp from cellulosic material, the pulp itself and its use |
CN1425090A (en) * | 1999-12-22 | 2003-06-18 | 自然纸浆股份公司 | Method for obtaining/recuperating by extraction carboxylic acids from waste liquors derived from pulp production |
JP2006112004A (en) * | 2004-10-14 | 2006-04-27 | Kansai Paint Co Ltd | Method for effectively utilizing elaeis guineensis |
CN102454129A (en) * | 2010-10-26 | 2012-05-16 | 李朝旺 | Fiber self-coupled oxidative decomposition cleaning papermaking method |
JP5938979B2 (en) * | 2012-03-23 | 2016-06-22 | 日本製紙株式会社 | Treatment method of plant-based materials |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2601408A (en) * | 1947-08-29 | 1952-06-24 | Celanese Corp | Two-step digestion of wood with aliphatic acid |
US3553076A (en) * | 1968-01-22 | 1971-01-05 | Weyerhaeuser Co | Non-catalytic process for the production of cellulose from lignocellulosic materials using acetic acid |
US4372812A (en) * | 1978-04-07 | 1983-02-08 | International Paper Company | Chlorine free process for bleaching lignocellulosic pulp |
AT367473B (en) * | 1980-04-10 | 1982-07-12 | Kanzler Walter | METHOD FOR OBTAINING FURFUROL, FORMIC, ACETIC ACID FROM ACID HYDROLYSATES OF PLANTS |
DE3445132A1 (en) * | 1984-12-11 | 1986-06-12 | Nimz, Horst H., Prof.Dr., 2050 Hamburg | Wood pulping with acetic acid |
EP0211558A3 (en) * | 1985-07-26 | 1987-05-27 | Biodyne Chemicals, Inc. | Process for digesting lignocellulosic material |
-
1988
- 1988-01-25 EP EP88810035A patent/EP0325891A1/en not_active Withdrawn
-
1989
- 1989-01-25 JP JP1741589A patent/JPH01221586A/en active Pending
- 1989-01-26 BR BR8900300A patent/BR8900300A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0325891A1 (en) | 1989-08-02 |
JPH01221586A (en) | 1989-09-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application fees: application dismissed [chapter 8.6 patent gazette] |
Free format text: REFERENTE AS 8A, 9A, 10A, 11A, 12A, 13A, 14A, 15A, 16A, 17A, 18A, 19A E 20A ANUIDADES. |
|
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: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2624 DE 20-04-2021 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |