SE9303088L - Process for preventing the deposition of organic pollutants in pulp and paper production systems - Google Patents

Process for preventing the deposition of organic pollutants in pulp and paper production systems

Info

Publication number
SE9303088L
SE9303088L SE9303088A SE9303088A SE9303088L SE 9303088 L SE9303088 L SE 9303088L SE 9303088 A SE9303088 A SE 9303088A SE 9303088 A SE9303088 A SE 9303088A SE 9303088 L SE9303088 L SE 9303088L
Authority
SE
Sweden
Prior art keywords
pulp
vinyl acetate
deposition
preventing
organic pollutants
Prior art date
Application number
SE9303088A
Other languages
Swedish (sv)
Other versions
SE510721C2 (en
SE9303088D0 (en
Inventor
David D Dreisbach
Iris D Barton
Original Assignee
Betz Europ 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 Betz Europ Inc filed Critical Betz Europ Inc
Priority to SE9303088A priority Critical patent/SE510721C2/en
Publication of SE9303088D0 publication Critical patent/SE9303088D0/en
Publication of SE9303088L publication Critical patent/SE9303088L/en
Publication of SE510721C2 publication Critical patent/SE510721C2/en

Links

Classifications

    • 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
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

Method comprises treating the pulp and papermaking systems with a polyalkylene oxide/vinyl acetate graft copolymer. Pref. the wt. ratio of polyalkylene oxide:vinyl acetate= 1:0.2-10. A polyalkylene oxide of number average mol. wt. 4,000-50,000 is grafted with vinyl acetate. Pref. is a graft copolymer of mol. wt. 24,000 contg. 3 pts. wt. vinyl acetate per 1 pt. wt. of polyethylene oxide. The vinyl acetate is saponified up to 15%. Polyethylene, polypropylene or polybutylene oxide is used.
SE9303088A 1993-09-22 1993-09-22 Control of deposition of organic contaminants in paper making SE510721C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9303088A SE510721C2 (en) 1993-09-22 1993-09-22 Control of deposition of organic contaminants in paper making

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9303088A SE510721C2 (en) 1993-09-22 1993-09-22 Control of deposition of organic contaminants in paper making

Publications (3)

Publication Number Publication Date
SE9303088D0 SE9303088D0 (en) 1993-09-22
SE9303088L true SE9303088L (en) 1995-03-23
SE510721C2 SE510721C2 (en) 1999-06-14

Family

ID=20391176

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9303088A SE510721C2 (en) 1993-09-22 1993-09-22 Control of deposition of organic contaminants in paper making

Country Status (1)

Country Link
SE (1) SE510721C2 (en)

Also Published As

Publication number Publication date
SE510721C2 (en) 1999-06-14
SE9303088D0 (en) 1993-09-22

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Legal Events

Date Code Title Description
NUG Patent has lapsed