NO895108D0 - PROCEDURE FOR DELIGNIFICATION AND WHITING OF LIGNOCELLULOSEMASSE. - Google Patents

PROCEDURE FOR DELIGNIFICATION AND WHITING OF LIGNOCELLULOSEMASSE.

Info

Publication number: NO895108D0
Authority: NO; Norway
Prior art keywords: lignocellulosemasse; delignification; whiting; procedure
Prior art date: 1988-12-20

Application number

NO895108A

Other languages

Norwegian (no)

Other versions

NO895108L (en

Inventor

Madhusudan Dattatraya Jayawant

Souza Rupert D

Jeffrey Shaocheng Hsieh

Original Assignee

Du Pont

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.)

1988-12-20

Filing date

1989-12-19

Publication date

1989-12-19

1989-12-19 Application filed by Du Pont filed Critical Du Pont

1989-12-19 Publication of NO895108D0 publication Critical patent/NO895108D0/en

1990-06-21 Publication of NO895108L publication Critical patent/NO895108L/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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds

NO89895108A 1988-12-20 1989-12-19 PROCEDURE FOR DELIGNIFICATION AND WHITING OF LIGNOCELLULOSEMASSE. NO895108L (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US28678288A	1988-12-20	1988-12-20

Publications (2)

Publication Number	Publication Date
NO895108D0 true NO895108D0 (en)	1989-12-19
NO895108L NO895108L (en)	1990-06-21

Family

ID=23100136

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NO89895108A NO895108L (en)	1988-12-20	1989-12-19	PROCEDURE FOR DELIGNIFICATION AND WHITING OF LIGNOCELLULOSEMASSE.

Country Status (9)

Country	Link
EP (1)	EP0377981A3 (en)
JP (1)	JPH02216290A (en)
AU (1)	AU4699989A (en)
BR (1)	BR8906570A (en)
CA (1)	CA2005369A1 (en)
DK (1)	DK648589A (en)
FI (1)	FI896085A7 (en)
NO (1)	NO895108L (en)
ZA (1)	ZA899775B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE1006056A3 (en) *	1992-07-06	1994-05-03	Solvay Interox	Method of laundering of chemical pulp.
WO2021209586A1 (en) *	2020-04-16	2021-10-21	Bim Kemi Ab	Delignification process

Family Cites Families (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

1989
- 1989-12-13 CA CA002005369A patent/CA2005369A1/en not_active Abandoned
- 1989-12-18 EP EP19890313196 patent/EP0377981A3/en not_active Withdrawn
- 1989-12-19 FI FI896085A patent/FI896085A7/en not_active Application Discontinuation
- 1989-12-19 NO NO89895108A patent/NO895108L/en unknown
- 1989-12-19 DK DK648589A patent/DK648589A/en not_active Application Discontinuation
- 1989-12-19 BR BR898906570A patent/BR8906570A/en not_active Application Discontinuation
- 1989-12-20 AU AU46999/89A patent/AU4699989A/en not_active Abandoned
- 1989-12-20 ZA ZA899775A patent/ZA899775B/en unknown
- 1989-12-20 JP JP1328534A patent/JPH02216290A/en active Pending

Also Published As

Publication number	Publication date
EP0377981A3 (en)	1992-06-24
NO895108L (en)	1990-06-21
DK648589D0 (en)	1989-12-19
FI896085A0 (en)	1989-12-19
ZA899775B (en)	1991-08-28
BR8906570A (en)	1990-09-04
CA2005369A1 (en)	1990-06-20
FI896085A7 (en)	1990-06-21
DK648589A (en)	1990-06-21
JPH02216290A (en)	1990-08-29
EP0377981A2 (en)	1990-07-18
AU4699989A (en)	1990-06-28

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