GB1070654A - Improvements in de-inking printed waste paper - Google Patents

Improvements in de-inking printed waste paper

Info

Publication number
GB1070654A
GB1070654A GB3226564A GB3226564A GB1070654A GB 1070654 A GB1070654 A GB 1070654A GB 3226564 A GB3226564 A GB 3226564A GB 3226564 A GB3226564 A GB 3226564A GB 1070654 A GB1070654 A GB 1070654A
Authority
GB
United Kingdom
Prior art keywords
waste paper
alkaline
thickened
sulphate
contain
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
GB3226564A
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.)
Garden State Paper Co Inc
Original Assignee
Garden State Paper Co Inc
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 Garden State Paper Co Inc filed Critical Garden State Paper Co Inc
Publication of GB1070654A publication Critical patent/GB1070654A/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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D9/00—Chemical paint or ink removers
    • C09D9/04—Chemical paint or ink removers with surface-active agents
    • 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

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Paper (AREA)

Abstract

The reaction product of a protein hydrolysate and a fatty acyl compound is used as the deinking agent in the treatment of waste printed paper. The hydrolysate may be obtained by acid or alkaline hydrolysis and may contain aminoacids and lower peptides or polypeptides. It may be used in the form of a sulphate-containing alkali-metal salt of the condensation product. The acyl group may be saturated or unsaturated and may contain 10 to 24 carbon atoms. The acylating agent is preferably a fatty acyl halide, but the acids themselves, their anhydrides and acyl carbonates may be used. The deinking agent is preferably added to water in the reactor before the waste paper is added, but may be sprayed on to the dry waste paper. The solution at this stage is preferably alkaline, and may be made so by the addition of sodium hydroxide, potassium hydroxide, soda ash or an alkaline-earth-metal hydroxide or salt. After pulping, the material is diluted with water, separated, washed, thickened, acidified e.g. with alum, sulphuric acid or SO2, thickened and formed into a web. The recovered stock may be blended with virgin sulphate or sulphite stock.
GB3226564A 1963-12-12 1964-08-07 Improvements in de-inking printed waste paper Expired GB1070654A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33108863A 1963-12-12 1963-12-12

Publications (1)

Publication Number Publication Date
GB1070654A true GB1070654A (en) 1967-06-01

Family

ID=23292578

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3226564A Expired GB1070654A (en) 1963-12-12 1964-08-07 Improvements in de-inking printed waste paper

Country Status (3)

Country Link
BE (1) BE644751A (en)
DE (1) DE1243963B (en)
GB (1) GB1070654A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE439787B (en) * 1984-03-19 1985-07-01 Berol Kemi Ab WANT TO REDUCE MISCELLANEOUS AND / OR CLICKNESS DURING WASTE PAPER PREPARATION

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE667722C (en) * 1936-10-06 1938-11-18 Chem Fab Gruenau Akt Ges Process for the recovery of pure paper stock from printed waste paper
NL84209C (en) * 1952-02-09 1900-01-01

Also Published As

Publication number Publication date
BE644751A (en) 1964-07-01
DE1243963B (en) 1967-07-06

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