FI771383A - - Google Patents

Info

Publication number: FI771383A
Authority: FI; Finland

Application number

FI771383A

Other languages

Finnish (fi)

Inventor

Andrew Edward 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.)

1976-05-04

Filing date

1977-04-29

Publication date

1977-11-05

1977-04-29 Application filed by Canadian Ind filed Critical Canadian Ind

1977-11-05 Publication of FI771383A publication Critical patent/FI771383A/fi

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)
Solid-Sorbent Or Filter-Aiding Compositions (AREA)

FI771383A 1976-05-04 1977-04-29 FI771383A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA251,752A CA1070909A (en)	1976-05-04	1976-05-04	Nitrogen dioxide-oxygen delignification

Publications (1)

Publication Number	Publication Date
FI771383A true FI771383A (en)	1977-11-05

Family

ID=4105864

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI771383A FI771383A (en)	1976-05-04	1977-04-29

Country Status (12)

Country	Link
JP (1)	JPS52134690A (en)
AU (1)	AU498646B2 (en)
BR (1)	BR7702713A (en)
CA (1)	CA1070909A (en)
DE (1)	DE2717257A1 (en)
ES (1)	ES458434A1 (en)
FI (1)	FI771383A (en)
FR (1)	FR2350421A1 (en)
NO (1)	NO771297L (en)
NZ (1)	NZ183555A (en)
SE (1)	SE7705136L (en)
ZA (1)	ZA771424B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE441192B (en) *	1980-05-27	1985-09-16	Mo Och Domsjoe Ab	PROCEDURE FOR DELIGNIFICATION OF CHEMICAL CELLULOSAMASSA WITH OXYGEN IN THE PRESENCE OF ONE OR MULTIPLE NEUTRALIZING AGENTS
SE421938B (en) *	1980-06-05	1982-02-08	Mo Och Domsjoe Ab	PROCEDURE FOR TREATMENT OF CELLULOSAMASSA
SE445122B (en) *	1980-12-17	1986-06-02	Mo Och Domsjoe Ab	PROCEDURE FOR DELIGNIFICATION OF CELLULOSAMASSA IN THE PRESENTATION OF NITROGEN Dioxide
SE425674B (en) *	1981-03-23	1982-10-25	Mo Och Domsjoe Ab	PROCEDURE FOR DELIGNIFICATION OF CELLULOSAMASSA WITH NITROGEN Dioxide AND Oxygen
DE3118384C1 (en) *	1981-05-09	1982-11-11	Mannesmann AG, 4000 Düsseldorf	Process for bleaching chemically produced pulp with ozone
SE448006B (en) *	1981-09-21	1987-01-12	Mo Och Domsjoe Ab	PROCEDURE FOR WHITING CELLULOSAMASSA INCLUDING AN ACTIVATION STEP WITH NITROGEN OXIDES
SE450394B (en) *	1981-12-30	1987-06-22	Mo Och Domsjoe Ab	PROCEDURE FOR BLACKING OF SIMILAR CELLULOSAMASSA
JP2002302888A (en) *	2001-04-05	2002-10-18	Oji Paper Co Ltd	Method of production for bleached pulp
FI20115754A0 (en) *	2011-03-22	2011-07-15	Andritz Oy	Process and arrangement for the treatment of chemical pulp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1505070A (en) *	1974-06-11	1978-03-22	Canadian Ind	Process for bleaching of lignocellulosic material

1976
- 1976-05-04 CA CA251,752A patent/CA1070909A/en not_active Expired
1977
- 1977-03-09 ZA ZA00771424A patent/ZA771424B/en unknown
- 1977-03-09 NZ NZ183555A patent/NZ183555A/en unknown
- 1977-03-10 AU AU23111/77A patent/AU498646B2/en not_active Expired
- 1977-04-14 NO NO771297A patent/NO771297L/en unknown
- 1977-04-19 DE DE19772717257 patent/DE2717257A1/en not_active Withdrawn
- 1977-04-28 BR BR7702713A patent/BR7702713A/en not_active IP Right Cessation
- 1977-04-29 FI FI771383A patent/FI771383A/fi not_active Application Discontinuation
- 1977-05-02 JP JP5003677A patent/JPS52134690A/en active Pending
- 1977-05-03 FR FR7713425A patent/FR2350421A1/en active Granted
- 1977-05-03 SE SE7705136A patent/SE7705136L/en unknown
- 1977-05-04 ES ES458434A patent/ES458434A1/en not_active Expired

Also Published As

Publication number	Publication date
NO771297L (en)	1977-11-07
ZA771424B (en)	1978-02-22
FR2350421A1 (en)	1977-12-02
BR7702713A (en)	1978-03-21
AU2311177A (en)	1978-09-14
NZ183555A (en)	1978-11-13
DE2717257A1 (en)	1977-11-17
SE7705136L (en)	1977-11-05
JPS52134690A (en)	1977-11-11
ES458434A1 (en)	1978-03-16
AU498646B2 (en)	1979-03-22
FR2350421B1 (en)	1982-08-13
CA1070909A (en)	1980-02-05

Publication	Publication Date	Title
FR2350421B1 (en)	1982-08-13
JPS5539279B2 (en)	1980-10-09
FR2372028B3 (en)	1980-10-17
JPS5390288U (en)	1978-07-24
JPS5346584U (en)	1978-04-20
JPS5296087U (en)	1977-07-18
JPS5335648U (en)	1978-03-29
JPS52108336U (en)	1977-08-17
JPS52120207U (en)	1977-09-12
JPS5312447U (en)	1978-02-01
JPS52123624U (en)	1977-09-20
JPS52147020U (en)	1977-11-08
JPS52148592U (en)	1977-11-10
CH591383A5 (en)	1977-09-15
CH609437A5 (en)	1979-02-28
CH598534A5 (en)	1978-04-28
CH593467A5 (en)	1977-11-30
CH593424A5 (en)	1977-11-30
CH594892A5 (en)	1978-01-31
CH595237A5 (en)	1978-02-15
CH596967A5 (en)	1978-03-31
CH591733A5 (en)	1977-09-30
CH608051A5 (en)	1978-12-15
CH608971A5 (en)	1979-02-15
CH598521A5 (en)	1978-04-28

Legal Events

Date	Code	Title	Description
2004-08-31	FD	Application lapsed	Owner name: CANADIAN INDUSTRIES LIMITED