GB991117A - Process for de-inking printed paper - Google Patents

Process for de-inking printed paper

Info

Publication number
GB991117A
GB991117A GB3231061A GB3231061A GB991117A GB 991117 A GB991117 A GB 991117A GB 3231061 A GB3231061 A GB 3231061A GB 3231061 A GB3231061 A GB 3231061A GB 991117 A GB991117 A GB 991117A
Authority
GB
United Kingdom
Prior art keywords
solution
weight
printed paper
ionic detergent
pulping
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.)
Expired
Application number
GB3231061A
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.)
HOLLIFIELD CORP
Original Assignee
HOLLIFIELD 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
Application filed by HOLLIFIELD CORP filed Critical HOLLIFIELD CORP
Publication of GB991117A publication Critical patent/GB991117A/en
Expired 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
    • D21C5/025—De-inking
    • D21C5/027—Chemicals therefor
    • 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

Abstract

Printed paper is de-inked by pulping it in an aqueous solution of a non-ionic detergent which is an alkyl phenol-ethylene oxide adduct in an amount of 1-2.5% by weight of the dry paper at a temperature between room temperature and the cloud point of the non-ionic detergent. The water may have a carbonate hardness of at least 20 p.p.m. The non-ionic detergent may be a compound having the formula R-O-C2H4-(-C2H4-)n OH in which R is an alkyl phenyl radical having 9-19 carbon atoms in the alkyl chain and n is an integer of 4-30. Below 10% by weight of the p solution of the dry printed paper which may be shredded is preferably added to the solution and pulping may be continued for 10-50 minutes at 110 DEG -140 DEG F. The pulp may then be diluted with water to a solid content of 0.5-1.5% based on the weight of the solution, separated from the solution, washed, thickened, acidified to a pH of 4-6.5 with, for example, sulphuric acid or SO2, if necessary bleached and washed, and then formed into a web. The recovered pulp may be blended with fresh sulphate or sulphite stock. Specification 991,116 is referred to.
GB3231061A 1961-10-02 1961-09-08 Process for de-inking printed paper Expired GB991117A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
LU40665A LU40665A1 (en) 1961-10-02 1961-10-02
LU40672A LU40672A1 (en) 1961-10-02 1961-10-03
LU40675A LU40675A1 (en) 1961-10-02 1961-10-04

Publications (1)

Publication Number Publication Date
GB991117A true GB991117A (en) 1965-05-05

Family

ID=27350580

Family Applications (3)

Application Number Title Priority Date Filing Date
GB3230961A Expired GB991116A (en) 1961-10-02 1961-09-08 Process for de-inking printed paper
GB3230861A Expired GB991367A (en) 1961-10-02 1961-09-08 Process for de-inking printed waste paper
GB3231061A Expired GB991117A (en) 1961-10-02 1961-09-08 Process for de-inking printed paper

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB3230961A Expired GB991116A (en) 1961-10-02 1961-09-08 Process for de-inking printed paper
GB3230861A Expired GB991367A (en) 1961-10-02 1961-09-08 Process for de-inking printed waste paper

Country Status (3)

Country Link
GB (3) GB991116A (en)
LU (3) LU40665A1 (en)
NL (3) NL268545A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK162899C (en) * 1977-10-20 1992-05-18 Montedison Spa DEVICES AND PROCEDURES FOR THE DEPRECIATION OF PRINTED WASTE PAPER
FR2467910A1 (en) 1979-10-23 1981-04-30 Interox PROCESS FOR THE REGENERATION OF OLD PAPERS
US4935096A (en) * 1988-12-06 1990-06-19 Garden State Paper Company, Inc. Process for the deinking of cellulosic materials
CA2082557C (en) 1992-02-24 1997-03-11 Charles W. Hankins Integrated pulping process of waste paper yielding tissue-grade paper fibers
ES2241408B1 (en) * 2002-11-13 2006-12-16 Universitat Politecnica De Catalunya NEW MATERIAL FROM HIGH QUALITY PRINTED PAPER WASTE AND ITS METHOD OF OBTAINING.

Also Published As

Publication number Publication date
LU40665A1 (en) 1963-04-02
GB991116A (en) 1965-05-05
LU40675A1 (en) 1963-04-04
NL268544A (en) 1900-01-01
NL268545A (en) 1900-01-01
LU40672A1 (en) 1963-04-03
GB991367A (en) 1965-05-05
NL268546A (en) 1900-01-01

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