BR7503680A - Processo para alvejar material lignocelulosico - Google Patents

Processo para alvejar material lignocelulosico

Info

Publication number: BR7503680A
Authority: BR; Brazil
Prior art keywords: processing; lignocellulosic material; target; target lignocellulosic; lignocellulosic
Prior art date: 1974-06-11

Application number

BR4721/75D

Other languages

English (en)

Portuguese (pt)

Inventor

A Yethon

Original Assignee

Canadian Ind

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.)

1974-06-11

Filing date

1975-06-11

Publication date

1976-06-29

1975-06-11 Application filed by Canadian Ind filed Critical Canadian Ind

1976-06-29 Publication of BR7503680A publication Critical patent/BR7503680A/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
- D21C9/1063—Bleaching ; Apparatus therefor with compounds not otherwise provided for, e.g. activated gases
- 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

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Polysaccharides And Polysaccharide Derivatives (AREA)

BR4721/75D 1974-06-11 1975-06-11 Processo para alvejar material lignocelulosico BR7503680A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB25845/74A GB1505070A (en)	1974-06-11	1974-06-11	Process for bleaching of lignocellulosic material

Publications (1)

Publication Number	Publication Date
BR7503680A true BR7503680A (pt)	1976-06-29

Family

ID=10234280

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR4721/75D BR7503680A (pt)	1974-06-11	1975-06-11	Processo para alvejar material lignocelulosico

Country Status (10)

Country	Link
JP (1)	JPS522003B2 (sv)
BR (1)	BR7503680A (sv)
CA (1)	CA1045759A (sv)
DE (1)	DE2526084C2 (sv)
ES (1)	ES438433A1 (sv)
FI (1)	FI751734A (sv)
FR (1)	FR2274729A1 (sv)
GB (1)	GB1505070A (sv)
NO (1)	NO147761C (sv)
SE (1)	SE7506646L (sv)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA1070909A (en) *	1976-05-04	1980-02-05	Canadian Industries Limited	Nitrogen dioxide-oxygen delignification
SE421938B (sv) *	1980-06-05	1982-02-08	Mo Och Domsjoe Ab	Forfarande for behandling av cellulosamassa med kveveoxider fore syrgasblekning
SE425674B (sv) *	1981-03-23	1982-10-25	Mo Och Domsjoe Ab	Forfarande for delignifiering av cellulosamassa med kvevedioxid och syrgas
DE3118384C1 (de) *	1981-05-09	1982-11-11	Mannesmann AG, 4000 Düsseldorf	Verfahren zum Bleichen von chemisch hergestelltem Zellstoff mit Ozon
SE448006B (sv) *	1981-09-21	1987-01-12	Mo Och Domsjoe Ab	Forfarande for blekning av cellulosamassa innefattande ett aktiveringssteg med kveveoxider
SE450393B (sv) *	1981-10-27	1987-06-22	Mo Och Domsjoe Ab	Forfarande for behandling av ved med kveveoxider och syrgas fore sulfatkokning

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE204460C (sv) *
DE212838C (sv) *
DE391713C (de) *	1922-12-12	1924-03-11	Paul Krais Dr	Verfahren zum Aufschliessen von Stroh, Schilf u. dgl.

1974
- 1974-06-11 GB GB25845/74A patent/GB1505070A/en not_active Expired
1975
- 1975-05-30 CA CA228,164A patent/CA1045759A/en not_active Expired
- 1975-06-09 NO NO752025A patent/NO147761C/no unknown
- 1975-06-10 FR FR7518079A patent/FR2274729A1/fr active Granted
- 1975-06-10 SE SE7506646A patent/SE7506646L/sv unknown
- 1975-06-10 FI FI751734A patent/FI751734A/fi not_active Application Discontinuation
- 1975-06-11 DE DE2526084A patent/DE2526084C2/de not_active Expired
- 1975-06-11 ES ES438433A patent/ES438433A1/es not_active Expired
- 1975-06-11 BR BR4721/75D patent/BR7503680A/pt unknown
- 1975-06-11 JP JP50069788A patent/JPS522003B2/ja not_active Expired

Also Published As

Publication number	Publication date
GB1505070A (en)	1978-03-22
FI751734A (sv)	1975-12-12
FR2274729B1 (sv)	1978-09-22
FR2274729A1 (fr)	1976-01-09
DE2526084A1 (de)	1976-01-02
NO752025L (sv)	1975-12-12
JPS5132802A (sv)	1976-03-19
DE2526084C2 (de)	1981-11-26
CA1045759A (en)	1979-01-09
NO147761C (no)	1983-06-08
NO147761B (no)	1983-02-28
AU8201275A (en)	1976-12-16
ES438433A1 (es)	1977-05-16
SE7506646L (sv)	1975-12-12
JPS522003B2 (sv)	1977-01-19

Similar Documents

Publication	Publication Date	Title
BR7605856A (pt)	1977-08-30	Processo para deslignificacao de material lignocelulosico
BR7503195A (pt)	1976-04-20	Processo para preparar eteres teralquilicos
BR7406782D0 (pt)	1975-07-29	Processo para preparar polieter-imidas
BR7505423A (pt)	1977-04-19	Aperfeicoamento em processo para a preservacao de materia animal
BR7403415D0 (pt)	1974-11-19	Processo para deslignificacao de material lignocelulosico
BR7504049A (pt)	1976-07-06	Aperfeicoamento em processo para a preparacao de uma poli-olefina
BR7402680D0 (pt)	1974-11-19	Processo e maquina para tirar file de peixe
BR7600709A (pt)	1977-05-10	Processo para produzir polpa celulosica
BR7404189A (pt)	1976-02-03	Composicao explosiva e processo para sua preparacao
BR7208667D0 (pt)	1974-04-25	Processo para produzir material fertilizante
BR7602965A (pt)	1977-05-31	Processo para preparar organosiloxanos
BR7507792A (pt)	1976-08-24	Composicao de micronutrientes e processo para sua preparacao
BR7303407D0 (pt)	1974-07-18	Processo para preparar politiodiglicois
BR7503196A (pt)	1976-04-20	Processo para produzir eteres teralquilicos
BR7501077A (pt)	1975-12-02	Fecho de correr separavel e processo para fabricar o mesm
BR7500590A (pt)	1975-11-11	Processo para preparar uma sulfonil semicarbazida organic
BR7503680A (pt)	1976-06-29	Processo para alvejar material lignocelulosico
BR7308171D0 (pt)	1974-07-18	Composicao termofixa em po e processo para preparar a mesma
BR7508122A (pt)	1976-08-24	Processo a aparelho aperfeicoados para separar materiais
BR7507091A (pt)	1976-08-10	Processo aperfeicoado para preparar 2-mercapto-benzotiazo
BR7701186A (pt)	1978-01-17	Processo para produzir uma material composto e material composto
BR7605612A (pt)	1977-08-09	Processo aperfeicoado para preparar triaril-fosfinas
BR7407614D0 (pt)	1975-07-08	Processo para preparar derivador de benzil-pirimidina e compostos assim obtidos
BR7409987A (pt)	1976-05-25	Processo para preparar alfa-amino-alcoois
BR7405089D0 (pt)	1975-01-21	Poli-eter-imidas e processo para produzi-las