FI69657C - Foerfarande foer hartshaltsminskning vid framstaellning av cellulosamassor ur lignocellulosamaterial. - Google Patents

Foerfarande foer hartshaltsminskning vid framstaellning av cellulosamassor ur lignocellulosamaterial. Download PDF

Info

Publication number
FI69657C
FI69657C FI813896A FI813896A FI69657C FI 69657 C FI69657 C FI 69657C FI 813896 A FI813896 A FI 813896A FI 813896 A FI813896 A FI 813896A FI 69657 C FI69657 C FI 69657C
Authority
FI
Finland
Prior art keywords
pulp
alkali
resin
amount
added
Prior art date
Application number
FI813896A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI813896L (fi
FI69657B (fi
Inventor
Sven Bertil Lindqvist
Haokan Erik Oestman
Original Assignee
Mo Och Domsjoe 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 Mo Och Domsjoe Ab filed Critical Mo Och Domsjoe Ab
Publication of FI813896L publication Critical patent/FI813896L/fi
Publication of FI69657B publication Critical patent/FI69657B/fi
Application granted granted Critical
Publication of FI69657C publication Critical patent/FI69657C/fi

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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
FI813896A 1980-12-05 1981-12-04 Foerfarande foer hartshaltsminskning vid framstaellning av cellulosamassor ur lignocellulosamaterial. FI69657C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8008574 1980-12-05
SE8008574A SE424884B (sv) 1980-12-05 1980-12-05 Forfarande for hartshaltsminskning vid framstellning av cellulosamassor ur lignocellulosamaterial

Publications (3)

Publication Number Publication Date
FI813896L FI813896L (fi) 1982-06-06
FI69657B FI69657B (fi) 1985-11-29
FI69657C true FI69657C (fi) 1990-10-31

Family

ID=20342404

Family Applications (1)

Application Number Title Priority Date Filing Date
FI813896A FI69657C (fi) 1980-12-05 1981-12-04 Foerfarande foer hartshaltsminskning vid framstaellning av cellulosamassor ur lignocellulosamaterial.

Country Status (8)

Country Link
JP (1) JPS57121692A (cs)
AU (1) AU529326B2 (cs)
CA (1) CA1162358A (cs)
CH (1) CH655965A5 (cs)
DE (1) DE3148101C2 (cs)
FI (1) FI69657C (cs)
NO (1) NO156905C (cs)
SE (1) SE424884B (cs)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5930980A (ja) * 1982-08-12 1984-02-18 王子製紙株式会社 リグノセルロ−ス物質の漂白方法
SE502321C2 (sv) * 1994-03-04 1995-10-02 Kvaerner Pulping Tech Förfarande vid ozonblekning av sulfitmassa
FI20070126A0 (fi) 2006-09-08 2007-02-13 Linde Ag Menetelmä hartsin poistamiseksi massasta ja hiilidioksidin tai (bi)karbonaatin käyttö tähän tarkoitukseen

Also Published As

Publication number Publication date
SE424884B (sv) 1982-08-16
DE3148101A1 (de) 1982-08-12
JPS57121692A (en) 1982-07-29
JPH0114358B2 (cs) 1989-03-10
AU529326B2 (en) 1983-06-02
NO814163L (no) 1982-06-07
DE3148101C2 (de) 1985-11-07
AU7788881A (en) 1982-06-17
FI813896L (fi) 1982-06-06
CH655965A5 (de) 1986-05-30
CA1162358A (en) 1984-02-21
FI69657B (fi) 1985-11-29
SE8008574L (sv) 1982-06-06
NO156905C (no) 1987-12-16
NO156905B (no) 1987-09-07

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Legal Events

Date Code Title Description
MA Patent expired

Owner name: MO OCH DOMSJOE AB