GB282829A - - Google Patents

Info

Publication number
GB282829A
GB282829A GB3534027A GB3534027A GB282829A GB 282829 A GB282829 A GB 282829A GB 3534027 A GB3534027 A GB 3534027A GB 3534027 A GB3534027 A GB 3534027A GB 282829 A GB282829 A GB 282829A
Authority
GB
United Kingdom
Prior art keywords
scum
insoluble
soap
addition
pulp
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
GB3534027A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB282829A publication Critical patent/GB282829A/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)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

282,829. Grenaudier, L. Dec. 30, 1926, [Convention date]. Addition to 279,516. Pulp, preparation of.-A modification of the process of the parent Specification consists in removing the ink through the formation of an insoluble scum by treating the pulp of the paper which is to be freed from ink with a very weak alkaline solution of carbonate of soda in ordinary water, 1 in 800 for example, the mass being heated and agitated throughout the treatment to produce a scum which carries off the pigment, the soap formed being rendered insoluble if necessary by addition of a metallic salt or an alkaline salt which effects the salting out. The insoluble scum may be produced by decomposing the soap formed with an acid so as to liberate the fatty acids of the soap which fatty acids are insoluble in water and are adapted to collect on the surface as a scum by reason of this low density. The agitation may be effected by boiling or by an air blast or by both applied during the mixing or stirring. A certain proportion of soluble soap may be added to increase the precipitation or salting out, and the capillarity of the solution employed may be varied by the addition of gelatine, albumen, casein, glucose and the like, and loading and bleaching agents such as bisulphites, hypochlorites and the like may also be added.
GB3534027A 1926-12-30 1927-12-30 Expired GB282829A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR282829T 1926-12-30

Publications (1)

Publication Number Publication Date
GB282829A true GB282829A (en) 1928-05-10

Family

ID=31897812

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2832827A Expired GB279516A (en) 1926-12-30 1927-10-25
GB3534027A Expired GB282829A (en) 1926-12-30 1927-12-30

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2832827A Expired GB279516A (en) 1926-12-30 1927-10-25

Country Status (6)

Country Link
US (1) US1791445A (en)
BE (1) BE345590A (en)
DE (1) DE491656C (en)
FR (2) FR623670A (en)
GB (2) GB279516A (en)
NL (2) NL25213C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1106592B (en) * 1958-12-17 1961-05-10 Friedrich Karl Sauer Process for the regeneration of tar and / or bituminous paper waste or waste paper

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747716C (en) * 1937-01-27 1944-10-11 Hans Fehn Process for regenerating printing paper
FR2467910A1 (en) 1979-10-23 1981-04-30 Interox PROCESS FOR THE REGENERATION OF OLD PAPERS
US5147502A (en) * 1990-05-10 1992-09-15 Recycle Processes Inc. Method for conditioning baled wastepaper in recycling operations
US5266158A (en) * 1992-03-09 1993-11-30 Interox America Process for the colour stripping and bleaching of coloured waste paper
US5882476A (en) * 1995-05-05 1999-03-16 Solvay Minerals, Inc. Deinking printed wastepaper using alkaline solution containing sodium sulfite and sodium carbonate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1106592B (en) * 1958-12-17 1961-05-10 Friedrich Karl Sauer Process for the regeneration of tar and / or bituminous paper waste or waste paper

Also Published As

Publication number Publication date
DE491656C (en) 1930-02-12
NL25213C (en) 1900-01-01
FR32789E (en) 1928-02-28
US1791445A (en) 1931-02-03
FR623670A (en) 1927-06-28
GB279516A (en) 1928-05-10
NL38713C (en) 1900-01-01
BE345590A (en) 1900-01-01

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