AT292442B - Process for bleaching wood pulp material - Google Patents

Process for bleaching wood pulp material

Info

Publication number: AT292442B
Authority: AT; Austria
Prior art keywords: wood pulp; pulp material; bleaching wood; bleaching; wood
Prior art date: 1968-09-20

Application number

AT896469A

Other languages

German (de)

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.)

1968-09-20

Filing date

1969-09-22

Publication date

1971-08-25

1969-09-22 Application filed by Canadian Ind filed Critical Canadian Ind

1971-08-25 Application granted granted Critical

1971-08-25 Publication of AT292442B publication Critical patent/AT292442B/en

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
- D21C9/1057—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)

AT896469A 1968-09-20 1969-09-22 Process for bleaching wood pulp material AT292442B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB44904/68A GB1262655A (en)	1968-09-20	1968-09-20	Bleaching of wood pulp

Publications (1)

Publication Number	Publication Date
AT292442B true AT292442B (en)	1971-08-25

Family

ID=10435190

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT896469A AT292442B (en)	1968-09-20	1969-09-22	Process for bleaching wood pulp material

Country Status (9)

Country	Link
AT (1)	AT292442B (en)
BR (1)	BR6912545D0 (en)
DE (1)	DE1947931C3 (en)
FI (1)	FI48859C (en)
FR (1)	FR2018562A1 (en)
GB (1)	GB1262655A (en)
NO (1)	NO131761C (en)
SE (1)	SE364322B (en)
ZA (1)	ZA696595B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2572431B1 (en) *	1984-10-25	1987-12-04	Centre Tech Ind Papier	PROCESS FOR THE PREPARATION OF CHEMICAL PAPER PULP FOR BLEACHING.
SE9900425L (en) *	1999-02-09	2000-09-04	Skogsind Tekn Foskningsinst	Pulp Delignification Procedure
CN107709657A (en) *	2015-09-30	2018-02-16	伊梅里斯矿物有限公司	The method of belaching aqueous paper pulp and the composition for these methods

1968
- 1968-09-20 GB GB44904/68A patent/GB1262655A/en not_active Expired
1969
- 1969-09-10 NO NO3625/69A patent/NO131761C/no unknown
- 1969-09-18 ZA ZA696595A patent/ZA696595B/en unknown
- 1969-09-18 BR BR212545/69A patent/BR6912545D0/en unknown
- 1969-09-19 FR FR6932066A patent/FR2018562A1/fr not_active Withdrawn
- 1969-09-19 SE SE12927/69A patent/SE364322B/xx unknown
- 1969-09-19 FI FI692692A patent/FI48859C/en active
- 1969-09-22 DE DE1947931A patent/DE1947931C3/en not_active Expired
- 1969-09-22 AT AT896469A patent/AT292442B/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
GB1262655A (en)	1972-02-02
FI48859B (en)	1974-09-30
ZA696595B (en)	1971-04-28
DE1947931A1 (en)	1970-03-26
NO131761C (en)	1977-03-22
FI48859C (en)	1975-01-10
FR2018562A1 (en)	1970-05-29
BR6912545D0 (en)	1973-05-03
NO131761B (en)	1975-04-14
SE364322B (en)	1974-02-18
DE1947931B2 (en)	1974-11-14
DE1947931C3 (en)	1975-06-26

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Legal Events

Date	Code	Title	Description
1977-09-15	ELJ	Ceased due to non-payment of the annual fee