FI49994C - Oxygen bleaching method. - Google Patents

Oxygen bleaching method.

Info

Publication number: FI49994C
Authority: FI; Finland
Prior art keywords: oxygen bleaching; bleaching method; oxygen; bleaching
Prior art date: 1969-12-19

Application number

FI703285A

Other languages

Finnish (fi)

Swedish (sv)

Other versions

FI49994B (en

Inventor

Samuel Edward Mallett

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.)

1969-12-19

Filing date

1970-12-07

Publication date

1975-11-10

1970-12-07 Application filed by Canadian Ind filed Critical Canadian Ind

1975-07-31 Application granted granted Critical

1975-07-31 Publication of FI49994B publication Critical patent/FI49994B/fi

1975-11-10 Publication of FI49994C publication Critical patent/FI49994C/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)

FI703285A 1969-12-19 1970-12-07 Oxygen bleaching method. FI49994C (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA70450		1969-12-19

Publications (2)

Publication Number	Publication Date
FI49994B FI49994B (en)	1975-07-31
FI49994C true FI49994C (en)	1975-11-10

Family

ID=4086085

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI703285A FI49994C (en)	1969-12-19	1970-12-07	Oxygen bleaching method.

Country Status (10)

Country	Link
AT (1)	AT302013B (en)
CA (1)	CA897361A (en)
DE (1)	DE2061526C3 (en)
FI (1)	FI49994C (en)
FR (1)	FR2071947B1 (en)
GB (1)	GB1342580A (en)
NO (1)	NO129262B (en)
SE (1)	SE369746B (en)
SU (1)	SU366622A3 (en)
ZA (1)	ZA708076B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2416297A1 (en) *	1978-01-31	1979-08-31	Europeen Cellulose	Three-stage paper pulp bleaching - giving high whiteness level, by treating with chlorine, hypochlorite or peroxide oxidant and chlorine di:oxide
FR2432574A1 (en) *	1978-08-01	1980-02-29	Europeen Cellulose	PROCESS FOR BLEACHING PAPER PULP
FI67241B (en) *	1981-06-10	1984-10-31	Aga Ab	SAETT FOER BLEKNING AV CELLULOSAHALTIGA MATERIAL
EP0088073A4 (en) *	1981-09-04	1984-01-09	Weyerhaeuser Co	Method of treating pulp with plural oxygen stages.
NZ237019A (en) *	1990-02-19	1992-11-25	Amcor Ltd	Bleaching paper pulp by initially treating with oxygen and/or hydrogen peroxide and subsequently treating with a bleaching agent without intervening washing steps
FR2670513B1 (en) *	1990-12-18	1993-02-19	Centre Tech Ind Papier	PROCESS FOR BLEACHING CHEMICAL PAPER PULP BY TWO-STAGE OXYGEN TREATMENT.
SE9401628L (en) *	1994-05-10	1995-11-11	Stora Kopparbergs Bergslags Ab	Oxygen delignification procedure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1310248A (en) *		1963-03-06
FR1404605A (en) *	1964-05-22	1965-07-02	Air Liquide	Improvement in delignification of chemical cellulose pulps
SE334286B (en) *	1968-12-05	1971-04-19	Mo Och Domsjoe Ab

1969
- 1969-12-19 CA CA897361A patent/CA897361A/en not_active Expired
1970
- 1970-11-30 ZA ZA708076*A patent/ZA708076B/en unknown
- 1970-12-07 FI FI703285A patent/FI49994C/en active
- 1970-12-10 NO NO04748/70A patent/NO129262B/no unknown
- 1970-12-14 DE DE2061526A patent/DE2061526C3/en not_active Expired
- 1970-12-16 SE SE17087/70A patent/SE369746B/xx unknown
- 1970-12-18 SU SU1601806A patent/SU366622A3/ru active
- 1970-12-18 FR FR7045905A patent/FR2071947B1/fr not_active Expired
- 1970-12-18 AT AT1142270A patent/AT302013B/en not_active IP Right Cessation
- 1970-12-18 GB GB6027070A patent/GB1342580A/en not_active Expired

Also Published As

Publication number	Publication date
FR2071947A1 (en)	1971-09-24
ZA708076B (en)	1972-07-26
FR2071947B1 (en)	1974-04-26
SU366622A3 (en)	1973-01-16
DE2061526C3 (en)	1975-06-05
DE2061526B2 (en)	1974-09-19
DE2061526A1 (en)	1971-06-24
SE369746B (en)	1974-09-16
AT302013B (en)	1972-09-25
NO129262B (en)	1974-03-18
FI49994B (en)	1975-07-31
CA897361A (en)	1972-04-11
GB1342580A (en)	1974-01-03

Publication	Publication Date	Title
CH542922A (en)	1973-11-30	Bleach
DK126959B (en)	1973-09-03	Muffe.
DK136274B (en)	1977-09-19	Universalled.
FI49994C (en)	1975-11-10	Oxygen bleaching method.
DK137867B (en)	1978-05-22	Stenbor.
DK125006B (en)	1972-12-18	Thermocopier.
DK126547B (en)	1973-07-30	Nematodicide.
ES149772Y (en)	1970-05-01	PULSOMETER.
DK124185B (en)	1972-09-25	Thermocopier.
FI47394C (en)	1973-11-12	Bleaching method.
ES150170Y (en)	1970-06-01	SPORTS-ADVERTISING APPARATUS.
ES150713Y (en)	1970-07-16	SUPPORTS.
ES150525Y (en)	1970-07-16	BLOCK.
ES150309Y (en)	1970-12-16	SIMPLIFIED COSTUME.
ES145686Y (en)	1970-01-16	FLARER.
ES146871Y (en)	1970-02-01	PACKAGING-DISPLAY.
ES144530Y (en)	1970-02-16	PLUG-SHUTTER.
ES144827Y (en)	1969-12-16	KEYCHAIN-CARD.
ES144881Y (en)	1969-12-16	BOX-CONTAINER.
ES144928Y (en)	1970-02-01	POSTCARD-ENVELOPE.
ES145022Y (en)	1970-07-01	BLANKET-QUILT.
ES145198Y (en)	1969-12-16	CLAMP-LABELS.
ES145387Y (en)	1970-01-16	PLUMIER.
ES145531Y (en)	1970-06-16	BOX-CASE.
ES149761Y (en)	1970-05-01	CASE-SOUVENIR.