FI43527B - - Google Patents

Info

Publication number
FI43527B
FI43527B FI0531/66A FI53166A FI43527B FI 43527 B FI43527 B FI 43527B FI 0531/66 A FI0531/66 A FI 0531/66A FI 53166 A FI53166 A FI 53166A FI 43527 B FI43527 B FI 43527B
Authority
FI
Finland
Application number
FI0531/66A
Other languages
Finnish (fi)
Inventor
J Turner
P Krug
Original Assignee
Hardman & Holden Ltd
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 Hardman & Holden Ltd filed Critical Hardman & Holden Ltd
Application granted granted Critical
Publication of FI43527B publication Critical patent/FI43527B/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
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
FI0531/66A 1965-03-05 1966-03-03 FI43527B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9415/65A GB1079135A (en) 1965-03-05 1965-03-05 Improvements relating to bleaching of wood pulp

Publications (1)

Publication Number Publication Date
FI43527B true FI43527B (en) 1970-12-31

Family

ID=9871530

Family Applications (1)

Application Number Title Priority Date Filing Date
FI0531/66A FI43527B (en) 1965-03-05 1966-03-03

Country Status (5)

Country Link
US (1) US3481828A (en)
FI (1) FI43527B (en)
GB (1) GB1079135A (en)
NO (1) NO118091B (en)
SE (1) SE306660B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244780A (en) * 1979-11-15 1981-01-13 Nalco Chemical Company Use of thiourea dioxide in pulp bleaching processes to preserve pulp strength and aid in brightness
US4675076A (en) * 1986-10-01 1987-06-23 Ppg Industries, Inc. Method for brightening pulp
AT407762B (en) * 1994-03-22 2001-06-25 Brueggemann L Kg Bleaching agent for bleaching secondary fibrous materials for papermaking
US6428653B1 (en) 2000-12-04 2002-08-06 West Fraser Timber Co. Ltd. Method of bleaching with formamidine sulfinic acid using a reducing agent to eliminate residual peroxide
DE102007055415C5 (en) * 2007-11-19 2018-11-29 SWISS KRONO Tec AG Method for reducing the emission of saturated and unsaturated aldehydes from wood-based materials

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956898A (en) * 1960-10-18 Certification of correction
US354477A (en) * 1886-12-14 And frank a
US2259479A (en) * 1938-08-03 1941-10-21 Sales Affiliates Inc Process for the manufacture of the solid compound of hydrogen peroxide and urea
NL54060C (en) * 1939-03-22 1942-10-15
US2361639A (en) * 1940-07-15 1944-10-31 Henry A Wallace Process for defibering lignocellulosic materials
US2838459A (en) * 1955-02-01 1958-06-10 Pennsalt Chemicals Corp Stabilization of solutions containing peroxygen compounds
US2872482A (en) * 1955-03-16 1959-02-03 Saint Gobain Process of making thiourea dioxide
US2859087A (en) * 1955-03-28 1958-11-04 Du Pont Process for bleaching webs of fibrous cellulose material with hydrogen peroxide vapor containing water vapor
US3384534A (en) * 1964-12-16 1968-05-21 Fmc Corp Bleaching of wood pulps with thiourea dioxide

Also Published As

Publication number Publication date
SE306660B (en) 1968-12-02
NO118091B (en) 1969-11-03
US3481828A (en) 1969-12-02
GB1079135A (en) 1967-08-16

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