GB438403A - Improvements in or relating to the purification or reclaiming of used or waste paper - Google Patents

Improvements in or relating to the purification or reclaiming of used or waste paper

Info

Publication number
GB438403A
GB438403A GB323035A GB323035A GB438403A GB 438403 A GB438403 A GB 438403A GB 323035 A GB323035 A GB 323035A GB 323035 A GB323035 A GB 323035A GB 438403 A GB438403 A GB 438403A
Authority
GB
United Kingdom
Prior art keywords
absent
acid derivatives
sulphuric acid
waste paper
water
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
GB323035A
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.)
Deutsche Hydrierwerke AG
Original Assignee
Deutsche Hydrierwerke 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 Deutsche Hydrierwerke AG filed Critical Deutsche Hydrierwerke AG
Publication of GB438403A publication Critical patent/GB438403A/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

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Paper (AREA)

Abstract

Waste paper is purified by treatment with water-soluble sulphuric acid derivatives of organic compounds, or with water - soluble salts or neutralization products thereof, which have a soap-like character, and are not precipitated by lime in aqueous solution. The organic compounds have the general formula R--X--R<1>--(Y--SO3H)n where R represents a hydrocarbon radical, X represents O or S, or the group COO, OCO, NR<2>CO, CONR<2>, SO2, NR<2>, SO2NR<2> or NR<2>SO2, R<2> being hydrogen, or a hydrocarbon radical, or X may be absent, Y represents O or S or may be absent, R<1> represents alkylene or, if Y is absent, an arylene radical, and n = 1 or 2. The sulphuric acid derivatives may be neutralized with alkalies, ammonia, or organic bases such as triethanolamine, cyclohexylamine, or pyridine, and may be used with alkali phosphates, with organic solvents, e.g. chlorinated or hydrogenated hydrocarbons, or alcohols of high molecular weight, or with Bentonite, fuller's earth, or Kieselguhr, or with other sulphonation products, e.g. Turkey red oil. The treating liquor may be separated for re-use and the pulp washed and re-made into paper.
GB323035A 1934-01-31 1935-01-31 Improvements in or relating to the purification or reclaiming of used or waste paper Expired GB438403A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE438403X 1934-01-31

Publications (1)

Publication Number Publication Date
GB438403A true GB438403A (en) 1935-11-15

Family

ID=6507158

Family Applications (1)

Application Number Title Priority Date Filing Date
GB323035A Expired GB438403A (en) 1934-01-31 1935-01-31 Improvements in or relating to the purification or reclaiming of used or waste paper

Country Status (1)

Country Link
GB (1) GB438403A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158531A (en) * 1961-08-18 1964-11-24 Rohrer Ernst Process for the production of waterproof materials from waste paper containing bitumen and/or wax
US3446696A (en) * 1962-05-09 1969-05-27 Evening News Publishing Co Method of de-inking with a non-ionic detergent
DE1692874B1 (en) * 1965-03-02 1971-12-16 Euro Grondstof Nv Process for regenerating waterproof paper
US4311552A (en) * 1979-02-21 1982-01-19 The Chemithon Corporation Deinking of newsprint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158531A (en) * 1961-08-18 1964-11-24 Rohrer Ernst Process for the production of waterproof materials from waste paper containing bitumen and/or wax
US3446696A (en) * 1962-05-09 1969-05-27 Evening News Publishing Co Method of de-inking with a non-ionic detergent
DE1692874B1 (en) * 1965-03-02 1971-12-16 Euro Grondstof Nv Process for regenerating waterproof paper
US4311552A (en) * 1979-02-21 1982-01-19 The Chemithon Corporation Deinking of newsprint

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