GB1016391A - Improvements in or relating to the manufacture of pulp and paper - Google Patents

Improvements in or relating to the manufacture of pulp and paper

Info

Publication number
GB1016391A
GB1016391A GB4555361A GB4555361A GB1016391A GB 1016391 A GB1016391 A GB 1016391A GB 4555361 A GB4555361 A GB 4555361A GB 4555361 A GB4555361 A GB 4555361A GB 1016391 A GB1016391 A GB 1016391A
Authority
GB
United Kingdom
Prior art keywords
alkali metal
azide
pulp
manufacture
chlorophenols
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
GB4555361A
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.)
MARUSHO SANGYO KK
Original Assignee
MARUSHO SANGYO KK
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 MARUSHO SANGYO KK filed Critical MARUSHO SANGYO KK
Publication of GB1016391A publication Critical patent/GB1016391A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/02—Agents for preventing deposition on the paper mill equipment, e.g. pitch or slime control
    • D21H21/04—Slime-control agents

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The formation of slime in aqueous media used in the manufacture of pulp and paper products is prevented by adding to the aqueous medium a quantity of alkali metal azide corresponding to an azide ion concentration in said aqueous medium of from 1 to 500 p.p.m. The azide is preferably added as an aqueous solution containing borax, an alkali metal carbonate or hydroxide, an alkylamine, alkanolamine or heterocyclic base to maintain the pH above 8. The aqueous solution may also contain an antimicrobial sulphur compound, e.g. NC-N = C(SH)2, N - alkyldithiocarbamic acids or mercaptobenzothiazoles or alkali metal salts thereof; antimicrobial chlorophenols, e.g. penta-, tetra- or tri-chlorophenols; or polyhydric alcohols, e.g. glycerol or alkylene glycols.
GB4555361A 1960-12-20 1961-12-19 Improvements in or relating to the manufacture of pulp and paper Expired GB1016391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4928960 1960-12-20

Publications (1)

Publication Number Publication Date
GB1016391A true GB1016391A (en) 1966-01-12

Family

ID=12826717

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4555361A Expired GB1016391A (en) 1960-12-20 1961-12-19 Improvements in or relating to the manufacture of pulp and paper

Country Status (1)

Country Link
GB (1) GB1016391A (en)

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