GB1062182A - Process for regenerating waste paper - Google Patents

Process for regenerating waste paper

Info

Publication number
GB1062182A
GB1062182A GB3256363A GB3256363A GB1062182A GB 1062182 A GB1062182 A GB 1062182A GB 3256363 A GB3256363 A GB 3256363A GB 3256363 A GB3256363 A GB 3256363A GB 1062182 A GB1062182 A GB 1062182A
Authority
GB
United Kingdom
Prior art keywords
hardness
carbon atoms
oxygen
waste paper
adjusted
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
GB3256363A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1062182A publication Critical patent/GB1062182A/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

Waste paper is regenerated by pulping it in an aqueous bath that has been softened by adding an alkali-metal silicate and also contains an oxygen-yielding substance and a detergent that is a primary or secondary alkylsulphonate having a hydrophobic hydrocarbon radical of 10 to 20 carbon atoms or an alkyarylsulphonate having 6 to 15 carbon atoms in the side chain, or a mixture of these. The hardness of the water is then adjusted to at least 10 DEG German hardness and the pigment particles removed by flotation. A water-soluble salt of an organic carboxylic acid having 10 to 22 carbon atoms or an alpha-sulphonic acid derivative thereof may also be present as a hardness-sensitive surface-active agent. The oxygen-yeilding substance may be sodium peroxide. The hardness may be adjusted by adding a salt of calcium or magnesium. The paper may also be bleached and comminuted at the same time.
GB3256363A 1962-08-16 1963-08-16 Process for regenerating waste paper Expired GB1062182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0037595 1962-08-16

Publications (1)

Publication Number Publication Date
GB1062182A true GB1062182A (en) 1967-03-15

Family

ID=7096960

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3256363A Expired GB1062182A (en) 1962-08-16 1963-08-16 Process for regenerating waste paper

Country Status (4)

Country Link
AT (1) AT258696B (en)
CH (1) CH426463A (en)
GB (1) GB1062182A (en)
NL (1) NL296705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027670A1 (en) * 1979-10-23 1981-04-29 INTEROX Société Anonyme Process for regenerating waste paper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027670A1 (en) * 1979-10-23 1981-04-29 INTEROX Société Anonyme Process for regenerating waste paper
US4343679A (en) 1979-10-23 1982-08-10 Interox (Societe Anonyme) Process for reclaiming waste paper

Also Published As

Publication number Publication date
NL296705A (en) 1900-01-01
CH426463A (en) 1966-12-15
AT258696B (en) 1967-12-11

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