FI860650A0 - SAETT VID PAPPERSFRAMSTAELLNING. - Google Patents

SAETT VID PAPPERSFRAMSTAELLNING.

Info

Publication number
FI860650A0
FI860650A0 FI860650A FI860650A FI860650A0 FI 860650 A0 FI860650 A0 FI 860650A0 FI 860650 A FI860650 A FI 860650A FI 860650 A FI860650 A FI 860650A FI 860650 A0 FI860650 A0 FI 860650A0
Authority
FI
Finland
Prior art keywords
sulphite
pappersframstaellning
paper
production
combination
Prior art date
Application number
FI860650A
Other languages
Finnish (fi)
Other versions
FI84635C (en
FI860650A (en
FI84635B (en
Inventor
Ulla Karin Elisabet Helmer
Original Assignee
Casco Nobel Ab
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 Casco Nobel Ab filed Critical Casco Nobel Ab
Publication of FI860650A0 publication Critical patent/FI860650A0/en
Publication of FI860650A publication Critical patent/FI860650A/en
Application granted granted Critical
Publication of FI84635B publication Critical patent/FI84635B/en
Publication of FI84635C publication Critical patent/FI84635C/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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Golf Clubs (AREA)
  • Toys (AREA)
  • Luminescent Compositions (AREA)
  • Steroid Compounds (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Making Paper Articles (AREA)

Abstract

Sulphite, and preferably sodium sulphite and sodium bisulphite, is used as absorbing agent for aldehydes at the production of paper. The sulphite is added to the stock or the process water in combination with a cationic retention agent, such as eg alum. A product suitable for use at the production of paper is an aqueous solution of a combination of sulphite and a cationic retention agent, preferably alum.
FI860650A 1985-02-15 1986-02-12 SAETT VID PAPPERSFRAMSTAELLNING FI84635C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8500715 1985-02-15
SE8500715A SE8500715L (en) 1985-02-15 1985-02-15 SET FOR PAPER MAKING

Publications (4)

Publication Number Publication Date
FI860650A0 true FI860650A0 (en) 1986-02-12
FI860650A FI860650A (en) 1986-08-16
FI84635B FI84635B (en) 1991-09-13
FI84635C FI84635C (en) 1993-07-28

Family

ID=20359131

Family Applications (1)

Application Number Title Priority Date Filing Date
FI860650A FI84635C (en) 1985-02-15 1986-02-12 SAETT VID PAPPERSFRAMSTAELLNING

Country Status (7)

Country Link
EP (1) EP0192623B1 (en)
AT (1) ATE57965T1 (en)
DE (1) DE3675231D1 (en)
ES (1) ES8801401A1 (en)
FI (1) FI84635C (en)
NO (1) NO168843C (en)
SE (1) SE8500715L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5326479A (en) * 1993-09-01 1994-07-05 Nalco Chemical Company Treatment of pulp and paper wastewater with reducing agent and a polymer for color removal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT947732B (en) * 1971-02-27 1973-05-30 Asahi Chemical Ind PROCESS FOR THE TREATMENT OF ALDEHYDES
FR2306944A1 (en) * 1975-04-09 1976-11-05 Speichim Formaldehyde and phenol removal from waste waters - by treating with formaldehyde blocking agent, evaporating and incinerating concentrate
US4409375A (en) * 1982-02-11 1983-10-11 Champion International Corporation Method for scavenging aldehydes
DE3222195A1 (en) * 1982-06-12 1983-12-15 Basf Ag, 6700 Ludwigshafen METHOD FOR THE PRODUCTION OF CHIPWOOD MATERIALS WITH REDUCED FORMALDEHYDEMISSION

Also Published As

Publication number Publication date
DE3675231D1 (en) 1990-12-06
NO168843B (en) 1991-12-30
EP0192623B1 (en) 1990-10-31
NO168843C (en) 1992-04-08
FI84635C (en) 1993-07-28
ATE57965T1 (en) 1990-11-15
ES552021A0 (en) 1987-12-16
EP0192623A1 (en) 1986-08-27
SE8500715L (en) 1986-08-16
FI860650A (en) 1986-08-16
NO860558L (en) 1986-08-18
ES8801401A1 (en) 1987-12-16
SE8500715D0 (en) 1985-02-15
FI84635B (en) 1991-09-13

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Legal Events

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Owner name: EKA NOBEL AB