BR9004674A - Aperfeicoamento na deslignificacao de fibra contendo lignocelulose - Google Patents

Aperfeicoamento na deslignificacao de fibra contendo lignocelulose

Info

Publication number: BR9004674A
Authority: BR; Brazil
Prior art keywords: designification; lignocellulosis; improvement; fiber containing; fiber
Prior art date: 1989-11-17

Application number

BR909004674A

Other languages

English (en)

Inventor

Augustine Ivanhoe Dalton

Original Assignee

Air Prod & Chem

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.)

1989-11-17

Filing date

1990-09-19

Publication date

1991-09-10

1990-09-19 Application filed by Air Prod & Chem filed Critical Air Prod & Chem

1991-09-10 Publication of BR9004674A publication Critical patent/BR9004674A/pt

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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/16—Bleaching ; Apparatus therefor with per compounds
- D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides
- 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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
- 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

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

BR909004674A 1989-11-17 1990-09-19 Aperfeicoamento na deslignificacao de fibra contendo lignocelulose BR9004674A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US43855189A	1989-11-17	1989-11-17

Publications (1)

Publication Number	Publication Date
BR9004674A true BR9004674A (pt)	1991-09-10

Family

ID=23741064

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR909004674A BR9004674A (pt)	1989-11-17	1990-09-19	Aperfeicoamento na deslignificacao de fibra contendo lignocelulose

Country Status (8)

Country	Link
EP (1)	EP0429767A1 (pt)
JP (1)	JPH03161586A (pt)
BR (1)	BR9004674A (pt)
CA (1)	CA2023916A1 (pt)
FI (1)	FI904662A7 (pt)
MY (1)	MY106117A (pt)
NO (1)	NO903893L (pt)
ZA (1)	ZA907008B (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI925159A0 (fi) *	1992-11-13	1992-11-13	Ahlstroem Oy	Foerfarande foer blekning av massa
US20090000751A1 (en) *	2007-06-29	2009-01-01	Caifang Yin	Bleaching process with at least one extraction stage
SE547843C2 (en) *	2023-02-24	2025-12-09	Valmet Oy	Method for recycling textile material comprising cellulose

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4568420B1 (en) *	1984-12-03	1999-03-02	Int Paper Co	Multi-stage bleaching process including an enhanced oxidative extraction stage
CA1251903A (en) *	1985-06-17	1989-04-04	Pulp And Paper Research Institute Of Canada	Alkaline-peroxide-oxygen treatment of unbleached and chlorinated chemical pulps
JPS6416958A (en) *	1987-07-13	1989-01-20	Toshiba Corp	Apparatus for monitoring condition of waste liquid

1990
- 1990-08-23 CA CA002023916A patent/CA2023916A1/en not_active Abandoned
- 1990-08-23 EP EP90116168A patent/EP0429767A1/en not_active Ceased
- 1990-08-28 MY MYPI90001461A patent/MY106117A/en unknown
- 1990-09-03 ZA ZA907008A patent/ZA907008B/xx unknown
- 1990-09-06 NO NO90903893A patent/NO903893L/no unknown
- 1990-09-19 BR BR909004674A patent/BR9004674A/pt unknown
- 1990-09-20 JP JP2251672A patent/JPH03161586A/ja active Pending
- 1990-09-21 FI FI904662A patent/FI904662A7/fi not_active Application Discontinuation

Also Published As

Publication number	Publication date
EP0429767A1 (en)	1991-06-05
ZA907008B (en)	1992-05-27
FI904662L (fi)	1991-05-18
FI904662A0 (fi)	1990-09-21
NO903893L (no)	1991-05-21
FI904662A7 (fi)	1991-05-18
NO903893D0 (no)	1990-09-06
JPH03161586A (ja)	1991-07-11
MY106117A (en)	1995-03-31
CA2023916A1 (en)	1991-05-12

Similar Documents

Publication	Publication Date	Title
BR8807139A (pt)	1989-10-31	Fibra celulosica
FI884404L (fi)	1988-09-26	Läpäisevyydeltään aseteltavat silmälasit
DK378789A (da)	1990-02-03	Brille
BR9006919A (pt)	1991-12-10	Composicao de rimel
BR9007196A (pt)	1991-12-10	Composicao
SE9000221D0 (sv)	1990-01-22	Komposition
TR25859A (tr)	1993-09-01	Elektro-optik modilatör
BR9006584A (pt)	1991-10-01	Composicao de poli-oxi-metileno
TR23718A (tr)	1990-07-17	Elyaflara deggin gelismeler
KR920007403U (ko)	1992-05-19	계기장치
BR8701101A (pt)	1987-12-29	Construcao de habitacao e processo de utilizacao de componentes modulares na mesma
IT1223738B (it)	1990-09-29	Occhiali
IT8768072A0 (it)	1987-12-15	Perfezionamenti in occhiali
DE69025322D1 (de)	1996-03-21	Flüssige prostaglandinzusammensetzung
BR9004674A (pt)	1991-09-10	Aperfeicoamento na deslignificacao de fibra contendo lignocelulose
FI903779A7 (fi)	1991-01-29	S-substituoituja betatioakryyliamideja ja niiden käyttö mikrobisideinä
BR8700765A (pt)	1988-04-26	Aperfeicoamentos na construcao de habitacoes unifamiliares
TR24875A (tr)	1992-07-07	Fungusidlerde veya bunlarla ilgili islahat
BR9005424A (pt)	1991-09-17	Composicao
IT1198451B (it)	1988-12-21	Galza monotaglia in fibra maturale
KR900001214U (ko)	1990-01-18	안경
DK545387D0 (da)	1987-10-19	Uorganisk fiberkomposition
BR6601530U (pt)	1988-05-10	Fasquia aplicavel na montagem de venezianas
BR6802135U (pt)	1990-05-15	Disposicao introduzida na esquadro de pedreiro
BR7000355U (pt)	1991-10-01	Disposicao introduzida na apresentacao de brigadeiro