ES438433A1 - Procedimiento para blanquear material lignocelulosico. - Google Patents

Procedimiento para blanquear material lignocelulosico.

Info

Publication number: ES438433A1
Authority: ES; Spain
Prior art keywords: lignocellulosic material; bleaching; treating; water; nitric oxide
Prior art date: 1974-06-11
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

Application number

ES438433A

Other languages

English (en)

Spanish (es)

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.)

PPG Architectural Coatings Canada Inc

Original Assignee

Canadian Industries Ltd

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

1977-05-16

1975-06-11 Application filed by Canadian Industries Ltd filed Critical Canadian Industries Ltd

1977-05-16 Publication of ES438433A1 publication Critical patent/ES438433A1/es

Status Expired legal-status Critical Current

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
- D21C9/10—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)

ES438433A 1974-06-11 1975-06-11 Procedimiento para blanquear material lignocelulosico. Expired ES438433A1 (es)

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
ES438433A1 true ES438433A1 (es)	1977-05-16

Family

ID=10234280

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES438433A Expired ES438433A1 (es)	1974-06-11	1975-06-11	Procedimiento para blanquear material lignocelulosico.

Country Status (10)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA1070909A (fr) *	1976-05-04	1980-02-05	Canadian Industries Limited	Delignification au bioxyde d'azote et a l'oxygene
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 (fr) *
DE212838C (fr) *
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/fr not_active Expired
- 1975-06-09 NO NO752025A patent/NO147761C/no unknown
- 1975-06-10 FI FI751734A patent/FI751734A/fi not_active Application Discontinuation
- 1975-06-10 SE SE7506646A patent/SE7506646L/xx unknown
- 1975-06-10 FR FR7518079A patent/FR2274729A1/fr active Granted
- 1975-06-11 JP JP50069788A patent/JPS522003B2/ja not_active Expired
- 1975-06-11 BR BR4721/75D patent/BR7503680A/pt unknown
- 1975-06-11 DE DE2526084A patent/DE2526084C2/de not_active Expired
- 1975-06-11 ES ES438433A patent/ES438433A1/es not_active Expired

Also Published As

Publication number	Publication date
JPS522003B2 (fr)	1977-01-19
DE2526084A1 (de)	1976-01-02
NO147761B (no)	1983-02-28
NO147761C (no)	1983-06-08
JPS5132802A (fr)	1976-03-19
FR2274729A1 (fr)	1976-01-09
SE7506646L (sv)	1975-12-12
BR7503680A (pt)	1976-06-29
DE2526084C2 (de)	1981-11-26
AU8201275A (en)	1976-12-16
CA1045759A (fr)	1979-01-09
GB1505070A (en)	1978-03-22
NO752025L (fr)	1975-12-12
FR2274729B1 (fr)	1978-09-22
FI751734A (fr)	1975-12-12

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