NO814309L - PROCEDURE FOR DELIGNIFICATION OF CELLULOSMASS - Google Patents

PROCEDURE FOR DELIGNIFICATION OF CELLULOSMASS

Info

Publication number: NO814309L
Authority: NO; Norway
Prior art keywords: cellulosmass; delignification; procedure
Prior art date: 1980-12-17

Application number

NO814309A

Other languages

Norwegian (no)

Other versions

NO158953C (en

NO158953B (en

Inventor

Hans Olof Samuelson

Original Assignee

Mo Och Domsjoe Ab

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.)

1980-12-17

Filing date

1981-12-16

Publication date

1982-06-18

1981-12-16 Application filed by Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab

1982-06-18 Publication of NO814309L publication Critical patent/NO814309L/en

1988-08-08 Publication of NO158953B publication Critical patent/NO158953B/en

1988-11-16 Publication of NO158953C publication Critical patent/NO158953C/en

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
- D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Investigating Or Analysing Biological Materials (AREA)

NO814309A 1980-12-17 1981-12-16 PROCEDURE FOR DELIGNIFICATION OF CELLULOSMASS. NO158953C (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE8008874A SE445122B (en)	1980-12-17	1980-12-17	PROCEDURE FOR DELIGNIFICATION OF CELLULOSAMASSA IN THE PRESENTATION OF NITROGEN Dioxide

Publications (3)

Publication Number	Publication Date
NO814309L true NO814309L (en)	1982-06-18
NO158953B NO158953B (en)	1988-08-08
NO158953C NO158953C (en)	1988-11-16

Family

ID=20342493

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO814309A NO158953C (en)	1980-12-17	1981-12-16	PROCEDURE FOR DELIGNIFICATION OF CELLULOSMASS.

Country Status (8)

Country	Link
JP (1)	JPS57121689A (en)
AU (1)	AU548046B2 (en)
CA (1)	CA1159203A (en)
FI (1)	FI73017C (en)
FR (1)	FR2496138A1 (en)
NO (1)	NO158953C (en)
NZ (1)	NZ198925A (en)
SE (1)	SE445122B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE434283B (en) *	1982-12-01	1984-07-16	Mo Och Domsjoe Ab	PROCEDURE FOR DELIGNIFICATION OF CELLULOSAMASSA WITH NITROGEN OXIDES AND Oxygen

Family Cites Families (1)

* 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

1980
- 1980-12-17 SE SE8008874A patent/SE445122B/en not_active IP Right Cessation
1981
- 1981-11-10 NZ NZ198925A patent/NZ198925A/en unknown
- 1981-11-23 AU AU77738/81A patent/AU548046B2/en not_active Ceased
- 1981-12-09 FI FI813954A patent/FI73017C/en not_active IP Right Cessation
- 1981-12-14 CA CA000392232A patent/CA1159203A/en not_active Expired
- 1981-12-14 JP JP56202386A patent/JPS57121689A/en active Granted
- 1981-12-16 NO NO814309A patent/NO158953C/en unknown
- 1981-12-16 FR FR8123482A patent/FR2496138A1/en active Granted

Also Published As

Publication number	Publication date
FR2496138B1 (en)	1983-12-02
CA1159203A (en)	1983-12-27
FI73017C (en)	1987-08-10
JPS6350466B2 (en)	1988-10-07
AU7773881A (en)	1982-06-24
NO158953C (en)	1988-11-16
JPS57121689A (en)	1982-07-29
FI73017B (en)	1987-04-30
NZ198925A (en)	1984-09-28
SE445122B (en)	1986-06-02
AU548046B2 (en)	1985-11-21
NO158953B (en)	1988-08-08
FI813954L (en)	1982-06-18
SE8008874L (en)	1982-06-18
FR2496138A1 (en)	1982-06-18

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