CH578087A5 - - Google Patents

Info

Publication number
CH578087A5
CH578087A5 CH562173A CH562173A CH578087A5 CH 578087 A5 CH578087 A5 CH 578087A5 CH 562173 A CH562173 A CH 562173A CH 562173 A CH562173 A CH 562173A CH 578087 A5 CH578087 A5 CH 578087A5
Authority
CH
Switzerland
Application number
CH562173A
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of CH578087A5 publication Critical patent/CH578087A5/xx

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
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CH562173A 1972-04-21 1973-04-18 CH578087A5 (xx)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2219505A DE2219505C3 (de) 1972-04-21 1972-04-21 Chlorfreie Mehrstufenbleiche von Zellstoff
FR7630794A FR2367859A1 (fr) 1972-04-21 1976-10-13 Proce

Publications (1)

Publication Number Publication Date
CH578087A5 true CH578087A5 (xx) 1976-07-30

Family

ID=25763123

Family Applications (1)

Application Number Title Priority Date Filing Date
CH562173A CH578087A5 (xx) 1972-04-21 1973-04-18

Country Status (8)

Country Link
US (1) US3867246A (xx)
AT (1) AT328289B (xx)
BE (1) BE845580Q (xx)
CA (1) CA987456A (xx)
CH (1) CH578087A5 (xx)
DE (1) DE2219505C3 (xx)
FR (1) FR2367859A1 (xx)
SE (1) SE405130B (xx)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4196043A (en) * 1970-12-21 1980-04-01 Scott Paper Company Kraft pulp bleaching and recovery process
IT1074373B (it) * 1976-01-16 1985-04-20 Solvay Processo per la rigenerazione di carta vecchia
LU74434A1 (xx) * 1976-02-25 1977-09-12
LU76021A1 (xx) * 1976-10-15 1978-05-16
SE420430B (sv) * 1978-02-17 1981-10-05 Mo Och Domsjoe Ab Forfarande for blekning och extraktion av lignocellulosahaltig material med peroxidhaltiga blekmedel
AU539108B2 (en) * 1979-04-17 1984-09-13 Interox Societe Anonyme Delignification of unbleached chemical pulp
DE3005947B1 (de) * 1980-02-16 1981-01-29 Degussa Verfahren zur Bleiche von Zellstoffen mittels organischer Persaeure
US4559103A (en) * 1982-08-05 1985-12-17 Honshu Seishi Kabushiki Kaisha Packaging paper and packaging material for packaging metallic material and method of producing the same
SE451606B (sv) * 1982-09-14 1987-10-19 Sca Development Ab Sett vid blekning av hogutbytesmassor medelst peroxider
US4793898A (en) * 1985-02-22 1988-12-27 Oy Keskuslaboratorio - Centrallaboratorium Ab Process for bleaching organic peroxyacid cooked material with an alkaline solution of hydrogen peroxide
US4883312A (en) * 1985-11-26 1989-11-28 United Technologies Automotive, Inc. Panel in-part locators
US4756800A (en) * 1986-09-03 1988-07-12 The United States Of America As Represented By The Secretary Of Agriculture Method for producing salts of monoperoxysulfuric acid and simultaneously bleaching pulp
SE8700569D0 (sv) * 1987-02-12 1987-02-12 Josef Kubat An improved peroxide bleaching method
CA2053035C (en) * 1990-10-12 1997-09-30 Repap Enterprises Inc. Chlorine-free wood pulps and process of making
DE4035813A1 (de) * 1990-11-10 1992-05-14 Akzo Gmbh Sauerstoffbleichung
DE4114134A1 (de) * 1991-04-30 1992-11-05 Sueddeutsche Kalkstickstoff Verfahren zur chlorfreien bleiche und delignifizierung von alkalizellstoff
DE4114135A1 (de) * 1991-04-30 1992-11-05 Sueddeutsche Kalkstickstoff Verfahren zur chlorfreien bleiche und delignifizierung von alkalizellstoff
US6007678A (en) * 1992-11-27 1999-12-28 Eka Nobel Ab Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof
DE69304342T3 (de) † 1992-11-27 2004-07-01 Eka Chemicals Ab Verfahren zum bleichen von lignocellulose-enthaltendem zellstoff
SE501325E (sv) * 1993-01-29 1999-09-20 Kvaerner Pulping Tech Förfarande för klorfri blekning av massa, varvid massan surgöres med ättiksyra vid behandlingen med komplexbildare
US6605181B1 (en) 1993-10-01 2003-08-12 Kvaerner Pulping Aktiebolag Peroxide bleach sequence including an acidic bleach stage and including a wash stage
US20080087390A1 (en) * 2006-10-11 2008-04-17 Fort James Corporation Multi-step pulp bleaching
US8845860B2 (en) 2010-09-16 2014-09-30 Georgia-Pacific Consumer Products Lp High brightness pulps from lignin rich waste papers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1828848A (en) * 1929-03-09 1931-10-27 Brown Co Production of chemical wood pulps
US3085039A (en) * 1960-08-23 1963-04-09 Fmc Corp Process for the treatment of wood
BE633420A (xx) * 1962-07-16
US3382149A (en) * 1964-10-29 1968-05-07 Du Pont Bleaching of hardwood sulfite pulp with hydrogen peroxide, including pretreatment with alkali
US3457023A (en) * 1965-07-07 1969-07-22 Union Carbide Corp Room-temperature bleaching of textiles with peracetic acid
US3345250A (en) * 1966-06-30 1967-10-03 Int Paper Co Bleaching pulp without direct chlorination by bleaching with chlorine dioxide
US3720577A (en) * 1970-05-25 1973-03-13 Int Paper Co Chlorine dioxide-peracetic acid-chlorine dioxide pulp bleaching sequence
US3707438A (en) * 1970-09-15 1972-12-26 Atlantic Richfield Co Method for the brightening of kraft pulp with tertiary butyl hydroperoxide
US3645840A (en) * 1971-01-19 1972-02-29 Atlantic Richfield Co Method for peroxide bleaching of pulp
US3719552A (en) * 1971-06-18 1973-03-06 American Cyanamid Co Bleaching of lignocellulosic materials with oxygen in the presence of a peroxide

Also Published As

Publication number Publication date
DE2219505A1 (de) 1973-11-08
AT328289B (de) 1976-03-10
DE2219505C3 (de) 1974-10-17
BE845580Q (fr) 1976-12-16
DE2219505B2 (de) 1974-03-07
CA987456A (en) 1976-04-20
FR2367859A1 (fr) 1978-05-12
FR2367859B1 (xx) 1980-10-17
SE405130B (sv) 1978-11-20
US3867246A (en) 1975-02-18
ATA359673A (de) 1975-05-15

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Legal Events

Date Code Title Description
PL Patent ceased