CA2126723A1 - Method of deinking waste paper for reclamation thereof - Google Patents

Method of deinking waste paper for reclamation thereof

Info

Publication number
CA2126723A1
CA2126723A1 CA002126723A CA2126723A CA2126723A1 CA 2126723 A1 CA2126723 A1 CA 2126723A1 CA 002126723 A CA002126723 A CA 002126723A CA 2126723 A CA2126723 A CA 2126723A CA 2126723 A1 CA2126723 A1 CA 2126723A1
Authority
CA
Canada
Prior art keywords
group
waste paper
reclamation
numeral
deinking waste
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.)
Granted
Application number
CA002126723A
Other languages
French (fr)
Other versions
CA2126723C (en
Inventor
Yasuo Kato
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.)
Nissin Kagaku Kenkyusho Co Ltd
Original Assignee
Nissin Kagaku Kenkyusho Co Ltd
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
Application filed by Nissin Kagaku Kenkyusho Co Ltd filed Critical Nissin Kagaku Kenkyusho Co Ltd
Priority to CA 2126723 priority Critical patent/CA2126723C/en
Publication of CA2126723A1 publication Critical patent/CA2126723A1/en
Application granted granted Critical
Publication of CA2126723C publication Critical patent/CA2126723C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Landscapes

  • Paper (AREA)

Abstract

A method of deinking waste paper for reclamation thereof, which comprises disintegrating waste paper with an alkali in water in the presence of a polyoxyalkylene ether compound having the formula R-O(PO)x(AO)y(PO)z-H

wherein R is an alkyl or alkenyl of 8-22 carbons, or an alkylphenyl wherein the alkyl has 4-12 carbons; PO is an oxypropylene group; and AO is an oxyethylene group, or a mixed oxyalkylene group composed of an oxyethylene group and at least one oxyalkylene group selected from the group consisting of an oxypropylene group and an oxybutylene group; and x is a numeral of 3-15, y is a numeral of 20-40, and z is a numeral of 5-20, as a deinking agent.
CA 2126723 1994-06-24 1994-06-24 Method of deinking waste paper for reclamation thereof Expired - Fee Related CA2126723C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2126723 CA2126723C (en) 1994-06-24 1994-06-24 Method of deinking waste paper for reclamation thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2126723 CA2126723C (en) 1994-06-24 1994-06-24 Method of deinking waste paper for reclamation thereof

Publications (2)

Publication Number Publication Date
CA2126723A1 true CA2126723A1 (en) 1995-12-25
CA2126723C CA2126723C (en) 2005-06-07

Family

ID=4153887

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2126723 Expired - Fee Related CA2126723C (en) 1994-06-24 1994-06-24 Method of deinking waste paper for reclamation thereof

Country Status (1)

Country Link
CA (1) CA2126723C (en)

Also Published As

Publication number Publication date
CA2126723C (en) 2005-06-07

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Legal Events

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EEER Examination request
MKLA Lapsed