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 PDF

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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Withdrawn
Application number
EP98400568A
Other languages
German (de)
French (fr)
Other versions
EP0864689A2 (en
Inventor
William T. Turner
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.)
Westvaco Corp
Original Assignee
Westvaco 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.)
Filing date
Publication date
Priority claimed from US08/814,680 external-priority patent/US5871663A/en
Priority claimed from US08/814,375 external-priority patent/US5871614A/en
Application filed by Westvaco Corp filed Critical Westvaco Corp
Publication of EP0864689A2 publication Critical patent/EP0864689A2/en
Publication of EP0864689A3 publication Critical patent/EP0864689A3/en
Withdrawn legal-status Critical Current

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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

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  • Paper (AREA)

Abstract

An improved preliminary aid composition and process for delignification of lignocellulosic raw material, such as wood chips, for the production of cellulose pulps for use in the manufacture of paper or paperboard are disclosed wherein the wood chips are treated in a closed reaction vessel with an alkaline pulping liquor with an amount of a cyclic keto compound, such as anthraquinone, included therein for achievement of a determined pulp yield, wherein the improvement comprises a reduction in the amount of anthraquinone required to achieve said yield by the addition to said alkaline pulping liquor, in addition to a reduced amount of the anthraquinone, a surfactant mixture comprising at least one alkyl alcohol alkoxylate and at least one polyoxyalkylene glycol ether of an ester of an acid selected from the group consisting of ricinoleic acid and 12-hydroxystearic acid.
EP98400568A 1997-03-11 1998-03-11 Additive composition and process for reducing anthraquinone requirements in pulping of lignocellulosic material Withdrawn EP0864689A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/814,680 US5871663A (en) 1997-03-11 1997-03-11 Additive composition for reducing anthraquinone requirements in pulping of lignocellulosic material
US814375 1997-03-11
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
CA2231313C (en) 2004-06-29
TW402652B (en) 2000-08-21
NO980659D0 (en) 1998-02-17
NO980659L (en) 1998-09-14

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