EP0206560A3 - Alkaline-peroxide-oxygen treatment for unbleached and chlorinated chemical pulps - Google Patents
Alkaline-peroxide-oxygen treatment for unbleached and chlorinated chemical pulps Download PDFInfo
- Publication number
- EP0206560A3 EP0206560A3 EP86304123A EP86304123A EP0206560A3 EP 0206560 A3 EP0206560 A3 EP 0206560A3 EP 86304123 A EP86304123 A EP 86304123A EP 86304123 A EP86304123 A EP 86304123A EP 0206560 A3 EP0206560 A3 EP 0206560A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- unbleached
- peroxide
- alkaline
- oxygen treatment
- chemical pulps
- Prior art date
- 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.)
- Ceased
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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA000484110A CA1251903A (en) | 1985-06-17 | 1985-06-17 | Alkaline-peroxide-oxygen treatment of unbleached and chlorinated chemical pulps |
CA484110 | 1985-06-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0206560A2 EP0206560A2 (en) | 1986-12-30 |
EP0206560A3 true EP0206560A3 (en) | 1988-07-20 |
Family
ID=4130718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86304123A Ceased EP0206560A3 (en) | 1985-06-17 | 1986-05-30 | Alkaline-peroxide-oxygen treatment for unbleached and chlorinated chemical pulps |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0206560A3 (en) |
JP (1) | JPS6253497A (en) |
BR (1) | BR8602790A (en) |
CA (1) | CA1251903A (en) |
FI (1) | FI862546A (en) |
NO (1) | NO862381L (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2023916A1 (en) * | 1989-11-11 | 1991-05-12 | Augustine I Dalton | Delignification of lignocellulose-containing fiber |
US6231718B1 (en) | 1992-02-28 | 2001-05-15 | International Paper Company | Two phase ozone and oxygen pulp treatment |
SE9301960L (en) * | 1993-06-08 | 1994-07-25 | Kvaerner Pulping Tech | Bleaching of chemical pulp with peroxide at overpressure |
US9932709B2 (en) | 2013-03-15 | 2018-04-03 | Ecolab Usa Inc. | Processes and compositions for brightness improvement in paper production |
WO2012038966A1 (en) | 2010-09-22 | 2012-03-29 | Tyche Industries Ltd. | Process for the preparation of donepezil intermediate |
TW201610265A (en) | 2014-05-20 | 2016-03-16 | 喬治亞太平洋消費者產品公司 | Bleaching and shive reduction process for non-wood fibers |
TW201544652A (en) | 2014-05-20 | 2015-12-01 | Georgia Pacific Consumer Prod | Bleaching and shive reduction process for non-wood fibers |
TW201610261A (en) * | 2014-05-20 | 2016-03-16 | 喬治亞太平洋消費者產品公司 | Bleaching and shive reduction process for non-wood fibers |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3655505A (en) * | 1965-06-25 | 1972-04-11 | Pulp Paper Res Inst | Two-stage purification of fibrous cellulose material employing gaseous chlorine dioxide in one stage and a peroxygen compound in the other |
US3719552A (en) * | 1971-06-18 | 1973-03-06 | American Cyanamid Co | Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide |
EP0087553A1 (en) * | 1982-02-27 | 1983-09-07 | Degussa Aktiengesellschaft | Process for producing half-bleached cellulose pulps |
US4568420A (en) * | 1984-12-03 | 1986-02-04 | International Paper Company | Multi-stage bleaching process including an enhanced oxidative extraction stage |
-
1985
- 1985-06-17 CA CA000484110A patent/CA1251903A/en not_active Expired
-
1986
- 1986-05-30 EP EP86304123A patent/EP0206560A3/en not_active Ceased
- 1986-06-16 NO NO862381A patent/NO862381L/en unknown
- 1986-06-16 FI FI862546A patent/FI862546A/en not_active Application Discontinuation
- 1986-06-16 BR BR8602790A patent/BR8602790A/en unknown
- 1986-06-17 JP JP14121086A patent/JPS6253497A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3655505A (en) * | 1965-06-25 | 1972-04-11 | Pulp Paper Res Inst | Two-stage purification of fibrous cellulose material employing gaseous chlorine dioxide in one stage and a peroxygen compound in the other |
US3719552A (en) * | 1971-06-18 | 1973-03-06 | American Cyanamid Co | Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide |
EP0087553A1 (en) * | 1982-02-27 | 1983-09-07 | Degussa Aktiengesellschaft | Process for producing half-bleached cellulose pulps |
US4568420A (en) * | 1984-12-03 | 1986-02-04 | International Paper Company | Multi-stage bleaching process including an enhanced oxidative extraction stage |
US4568420B1 (en) * | 1984-12-03 | 1999-03-02 | Int Paper Co | Multi-stage bleaching process including an enhanced oxidative extraction stage |
Non-Patent Citations (3)
Title |
---|
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 54, no. 3, September 1983, page 305, abstract no. 2775, Appleton, Wisconsin, US; H. KRUGER et al.: "Bleaching of sulfite pulps with peroxide and oxygen - possibilities and limitations", & TAPPI INT. SULFITE PULPING CONF. (TORONTO) PROC.: 143-148(OCT. 20-22, 1982)(Cat. D,X) * |
ABSTRACT BULLETIN, vol. 56, no. 10, April 1986, page 1216, abstract no. 11066, Appleton, Wisconsin, US; D. LACHENAL et al.: "Reinforcement of oxygen-alkali extraction with hydrogen peroxide or hyprochlorite", & TAPPI PULPNG CONF. (HOLLYWOOD, FL) PROC. (BOOK 2): 439-443 (NOV. 3-7, 1985) * |
PAPIER, vol. 40, no. 4, April 1986, pages 150-153, Darmstadt, DE; H.-U. S]SS: "Die peroxidgest}tzte Sauerstoff-Delignifizierung von Sulfitzellstoffen - ein Schritt zur Verringerung der AOX-Belastung" * |
Also Published As
Publication number | Publication date |
---|---|
EP0206560A2 (en) | 1986-12-30 |
NO862381L (en) | 1986-12-18 |
FI862546A (en) | 1986-12-18 |
NO862381D0 (en) | 1986-06-16 |
CA1251903A (en) | 1989-04-04 |
FI862546A0 (en) | 1986-06-16 |
BR8602790A (en) | 1987-02-10 |
JPS6253497A (en) | 1987-03-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE DE FR GB SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE DE FR GB SE |
|
17P | Request for examination filed |
Effective date: 19890111 |
|
17Q | First examination report despatched |
Effective date: 19900720 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 19920514 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LIEBERGOTT, NORMAN Inventor name: VAN LIEROP, BARBARA |