CA975111A - Bleaching cellulosic pulp - Google Patents

Bleaching cellulosic pulp

Info

Publication number: CA975111A
Authority: CA; Canada
Prior art keywords: cellulosic pulp; bleaching cellulosic; bleaching; pulp; cellulosic
Prior art date: 1971-01-22
Legal status (The legal status 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 status listed.): Expired

Application number

CA130,453A

Other languages

English (en)

Inventor

Ralph J. Gall

Frederick H. Thompson

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Occidental Chemical Corp

Original Assignee

Hooker Chemicals and Plastics Corp

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.)

1971-01-22

Filing date

1971-12-17

Publication date

1975-09-30

1971-12-17 Application filed by Hooker Chemicals and Plastics Corp filed Critical Hooker Chemicals and Plastics Corp

1975-09-30 Application granted granted Critical

1975-09-30 Publication of CA975111A publication Critical patent/CA975111A/en

Status Expired legal-status Critical Current

Links

238000004061 bleaching Methods 0.000 title 1

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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)

CA130,453A 1971-01-22 1971-12-17 Bleaching cellulosic pulp Expired CA975111A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US10899571A	1971-01-22	1971-01-22

Publications (1)

Publication Number	Publication Date
CA975111A true CA975111A (en)	1975-09-30

Family

ID=22325250

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA130,453A Expired CA975111A (en)	1971-01-22	1971-12-17	Bleaching cellulosic pulp

Country Status (12)

Country	Link
JP (1)	JPS5020601B1 (ja)
AU (1)	AU458729B2 (ja)
BR (1)	BR7200385D0 (ja)
CA (1)	CA975111A (ja)
DE (1)	DE2202662A1 (ja)
ES (1)	ES399036A1 (ja)
FR (1)	FR2122963A5 (ja)
IT (1)	IT946779B (ja)
NL (1)	NL7200822A (ja)
SE (1)	SE390991B (ja)
SU (1)	SU605555A3 (ja)
ZA (1)	ZA718559B (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FI884507A7 (fi) *	1987-10-05	1989-04-06	Champion Int Corp	Paperitehtaan jäteveden värin vähentäminen klooridioksidihapetuksella.

1971
- 1971-12-17 CA CA130,453A patent/CA975111A/en not_active Expired
- 1971-12-22 ZA ZA718559A patent/ZA718559B/xx unknown
- 1971-12-23 AU AU37265/71A patent/AU458729B2/en not_active Expired
1972
- 1972-01-12 SU SU721737114A patent/SU605555A3/ru active
- 1972-01-19 ES ES399036A patent/ES399036A1/es not_active Expired
- 1972-01-19 FR FR7201731A patent/FR2122963A5/fr not_active Expired
- 1972-01-20 NL NL7200822A patent/NL7200822A/xx unknown
- 1972-01-20 DE DE19722202662 patent/DE2202662A1/de active Pending
- 1972-01-21 JP JP47008244A patent/JPS5020601B1/ja active Pending
- 1972-01-21 SE SE7200707A patent/SE390991B/xx unknown
- 1972-01-21 IT IT19638/72A patent/IT946779B/it active
- 1972-01-24 BR BR385/72A patent/BR7200385D0/pt unknown

Also Published As

Publication number	Publication date
FR2122963A5 (en)	1972-09-01
NL7200822A (ja)	1972-07-25
ES399036A1 (es)	1975-06-01
DE2202662A1 (de)	1972-08-03
BR7200385D0 (pt)	1973-07-17
AU458729B2 (en)	1975-03-06
AU3726571A (en)	1973-06-28
IT946779B (it)	1973-05-21
JPS5020601B1 (ja)	1975-07-16
ZA718559B (en)	1972-09-27
SE390991B (sv)	1977-01-31
SU605555A3 (ru)	1978-04-30

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