EP0864689A3 - Additive composition and process for reducing anthraquinone requirements in pulping of lignocellulosic material - Google Patents
Additive composition and process for reducing anthraquinone requirements in pulping of lignocellulosic material Download PDFInfo
- Publication number
- EP0864689A3 EP0864689A3 EP98400568A EP98400568A EP0864689A3 EP 0864689 A3 EP0864689 A3 EP 0864689A3 EP 98400568 A EP98400568 A EP 98400568A EP 98400568 A EP98400568 A EP 98400568A EP 0864689 A3 EP0864689 A3 EP 0864689A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- anthraquinone
- amount
- pulping
- requirements
- additive composition
- 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.)
- Withdrawn
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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/222—Use of compounds accelerating the pulping processes
Landscapes
- Paper (AREA)
Abstract
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US814375 | 1991-12-26 | ||
US08/814,680 US5871663A (en) | 1997-03-11 | 1997-03-11 | Additive composition for reducing anthraquinone requirements in pulping of lignocellulosic material |
US08/814,375 US5871614A (en) | 1997-03-11 | 1997-03-11 | Process for reducing anthraquinone requirements in pulping of lignocellulosic material |
US814680 | 1997-03-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0864689A2 EP0864689A2 (en) | 1998-09-16 |
EP0864689A3 true EP0864689A3 (en) | 1999-06-16 |
Family
ID=27123839
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98400568A Withdrawn EP0864689A3 (en) | 1997-03-11 | 1998-03-11 | Additive composition and process for reducing anthraquinone requirements in pulping of lignocellulosic material |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0864689A3 (en) |
CA (1) | CA2231313C (en) |
NO (1) | NO980659L (en) |
TW (1) | TW402652B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080105392A1 (en) * | 2006-11-03 | 2008-05-08 | Duggirala Prasad Y | Method and composition for improving fiber quality and process efficiency in mechanical pulping |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56161345A (en) * | 1980-05-15 | 1981-12-11 | Nippon Jiyouriyuu Kogyo Kk | Readily-dispersible quinone composition and its preparation |
US4481073A (en) * | 1980-12-01 | 1984-11-06 | Kawasaki Kasei Chemicals Ltd. | Process for removing anthraquinone type scale |
US5032224A (en) * | 1989-03-27 | 1991-07-16 | Exxon Chemical Patent Inc. | Method of producing pulp |
JPH0633386A (en) * | 1992-05-18 | 1994-02-08 | Nippon Jiyouriyuu Kogyo Kk | Pulp digesting assistant composition |
US5298120A (en) * | 1992-06-09 | 1994-03-29 | Michael Blackstone | Composition for enhancing the pulping of wood chips |
-
1998
- 1998-02-17 NO NO980659A patent/NO980659L/en not_active Application Discontinuation
- 1998-03-05 CA CA002231313A patent/CA2231313C/en not_active Expired - Fee Related
- 1998-03-11 EP EP98400568A patent/EP0864689A3/en not_active Withdrawn
- 1998-09-07 TW TW087114856A patent/TW402652B/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56161345A (en) * | 1980-05-15 | 1981-12-11 | Nippon Jiyouriyuu Kogyo Kk | Readily-dispersible quinone composition and its preparation |
US4481073A (en) * | 1980-12-01 | 1984-11-06 | Kawasaki Kasei Chemicals Ltd. | Process for removing anthraquinone type scale |
US5032224A (en) * | 1989-03-27 | 1991-07-16 | Exxon Chemical Patent Inc. | Method of producing pulp |
JPH0633386A (en) * | 1992-05-18 | 1994-02-08 | Nippon Jiyouriyuu Kogyo Kk | Pulp digesting assistant composition |
US5298120A (en) * | 1992-06-09 | 1994-03-29 | Michael Blackstone | Composition for enhancing the pulping of wood chips |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Section Ch Week 8204, Derwent World Patents Index; Class A97, AN 82-06736E, XP002100591 * |
DATABASE WPI Section Ch Week 9410, Derwent World Patents Index; Class A97, AN 94-080431, XP002100592 * |
Also Published As
Publication number | Publication date |
---|---|
CA2231313A1 (en) | 1998-09-11 |
EP0864689A2 (en) | 1998-09-16 |
TW402652B (en) | 2000-08-21 |
NO980659L (en) | 1998-09-14 |
CA2231313C (en) | 2004-06-29 |
NO980659D0 (en) | 1998-02-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5032224A (en) | Method of producing pulp | |
DE2123542C3 (en) | Process for the production of cellulose pulps | |
US4029543A (en) | Mechanically freeing wood fibers in the presence of spent peroxide bleaching liquor | |
US5338405A (en) | Production of fiber pulp by impregnating the lignocellulosic material with an aqueous alcoholic SO2 solution prior to defibration | |
CA1036304A (en) | Process for producing paper-making pulps from grasses | |
CA1110412A (en) | Pulping with an alkaline liquor containing a cyclic keto compound and an amino compound | |
US5871663A (en) | Additive composition for reducing anthraquinone requirements in pulping of lignocellulosic material | |
Zhao et al. | Alkaline peroxide mechanical pulping of wheat straw with enzyme treatment | |
EP0864689A3 (en) | Additive composition and process for reducing anthraquinone requirements in pulping of lignocellulosic material | |
EP2326766B1 (en) | Pulping additives for a reduction of resin from kraft pulp | |
US5871614A (en) | Process for reducing anthraquinone requirements in pulping of lignocellulosic material | |
EP0639666B1 (en) | Quaternary compounds as brightness enhancers | |
JP2005533940A (en) | Method for deresining pulp using alkoxylated alkyl alcohol surfactant | |
SK24996A3 (en) | Method for reducing light-induced brightness reversion in lignin-containing pulps, products gained by using this method and compositions for using in this method | |
KR20230118241A (en) | Bleaching method for thermomechanical pulp | |
AR013011A1 (en) | AN IMPROVED AUXILIARY COMPOSITION FOR THE FORMATION OF WOOD PULP, AN IMPROVED PROCESS FOR THE DELIGNIFICATION OF LIGNOCELLULOSIC RAW MATERIAL IN THE PRODUCTION OF CELLULOSE PULP SUITABLE FOR USE IN THE MANUFACTURE OF PAPER OR CARDBOARD. | |
US6123810A (en) | Pulping composition containing aminoalkoxylsilanes and a pulping process using the composition | |
EP0041401A1 (en) | Method and mixture for producing cellulosic pulps | |
JP2989588B1 (en) | Method for pulping lignocellulosic materials and formulations used in the method | |
FI79358C (en) | MASSAFRAMSTAELLNINGSFOERFARANDE. | |
SU988940A1 (en) | Pulp production method | |
BR9803218A (en) | Additive composition and process to reduce the required amounts of anthraquinone in the pulping process of cellulosic material. | |
KR20000014781A (en) | Adding composition to reduce needed amount of anthraquinone at producing pulp of ligno cellulosic substance and method | |
RU2135665C1 (en) | Pulp preparation method | |
CA1200659A (en) | Alkaline pulping process |
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): DK ES FI FR GB IT PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
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 CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 19991203 |
|
AKX | Designation fees paid |
Free format text: DK ES FI FR GB IT PT SE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 20011211 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20020723 |