AU3724384A - Process and product for bleaching of chemical paper- making pulps - Google Patents

Process and product for bleaching of chemical paper- making pulps

Info

Publication number
AU3724384A
AU3724384A AU37243/84A AU3724384A AU3724384A AU 3724384 A AU3724384 A AU 3724384A AU 37243/84 A AU37243/84 A AU 37243/84A AU 3724384 A AU3724384 A AU 3724384A AU 3724384 A AU3724384 A AU 3724384A
Authority
AU
Australia
Prior art keywords
weight
alkaline
concentration
bleaching
chemical paper
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
AU37243/84A
Other versions
AU567787B2 (en
Inventor
Bernard Dubreux
Jean-Pierre Schirmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arkema France SA
Original Assignee
Atochem SA
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 Atochem SA filed Critical Atochem SA
Publication of AU3724384A publication Critical patent/AU3724384A/en
Application granted granted Critical
Publication of AU567787B2 publication Critical patent/AU567787B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • D21C9/163—Bleaching ; Apparatus therefor with per compounds with peroxides

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Load-Bearing And Curtain Walls (AREA)

Abstract

1. Process for bleaching chemical paper pulps using hydrogen peroxide, characterized in that the operation is carried out in a single stage at a pH of 11 to 11.5, at a temperature of 70 degrees C to 100 degrees C, with the aid of a solution containing, in addition to hydrogen peroxide, at least one alkaline agent chosen from sodium hydroxide and sodium carbonate, at least one alkali metal silicate at a concentration of at least 0.3% by weight, expressed as SiO2 , at least one magnesium salt and at least one calcium salt in such quantity that the weight concentration of each of these alkaline-earth elements is between 0.05% and 1%, these elements being maintained in the dissolved state with the aid of at least one complexing agent for alkaline-earth ions in such quantity that the total concentration of complexant does not exceed 10% by weight.
AU37243/84A 1983-12-29 1984-12-28 Process and product for bleaching of chemical paper- making pulps Ceased AU567787B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8320990 1983-12-29
FR8320990A FR2557605B1 (en) 1983-12-29 1983-12-29 PROCESS FOR BLEACHING PAPER PULP BY HYDROGEN PEROXIDE

Publications (2)

Publication Number Publication Date
AU3724384A true AU3724384A (en) 1985-07-04
AU567787B2 AU567787B2 (en) 1987-12-03

Family

ID=9295687

Family Applications (1)

Application Number Title Priority Date Filing Date
AU37243/84A Ceased AU567787B2 (en) 1983-12-29 1984-12-28 Process and product for bleaching of chemical paper- making pulps

Country Status (9)

Country Link
EP (1) EP0148712B1 (en)
JP (1) JPS60181391A (en)
AT (1) ATE29537T1 (en)
AU (1) AU567787B2 (en)
CA (1) CA1262805A (en)
DE (2) DE3466024D1 (en)
ES (1) ES539151A0 (en)
FI (1) FI76135C (en)
FR (1) FR2557605B1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3544398A1 (en) * 1985-12-16 1987-06-19 Sueddeutsche Kalkstickstoff METHOD FOR THE BLEACHING AND DELIGNIFICATION OF CELLULAR-BASED PRODUCTS
JPH0642046B2 (en) * 1987-01-29 1994-06-01 新王子製紙株式会社 Support for photographic paper
SE470065C (en) * 1991-04-30 1996-01-15 Eka Nobel Ab Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching
ATE184060T1 (en) * 1993-04-20 1999-09-15 Eka Chemicals Ab METHOD FOR BLEACHING PULP CONTAINING LIGNOCELLULOSE
IT1290070B1 (en) * 1997-03-13 1998-10-19 3V Sigma Spa COMPOSITIONS FOR THE PAPER WHITENING
GB2327894A (en) * 1997-08-01 1999-02-10 Nippon Paint Co Ltd Method of multi-layer coating formation
US6699358B1 (en) 1998-05-15 2004-03-02 National Silicates Partnership Method for brightening chemical pulp with hydrogen peroxide using a magnesium compound in silicate solution
EP1088130B1 (en) * 1998-05-15 2004-03-31 National Silicates Partnership Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps
US7001484B2 (en) 2000-05-04 2006-02-21 University Of New Brunswick Peroxide bleaching of wood pulp using stabilizers and sodium hydrosulfide reducing agent
US8845860B2 (en) 2010-09-16 2014-09-30 Georgia-Pacific Consumer Products Lp High brightness pulps from lignin rich waste papers

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US437813A (en) * 1890-10-07 Envelope-machine
NL97796C (en) * 1958-05-29
US3472813A (en) * 1967-01-18 1969-10-14 Argus Chem Resistance of acrylonitrile butadiene styrene polymers to discoloration
FR2038056A1 (en) * 1969-03-07 1971-01-08 Air Liquide Stable, clear bleaching bath for paper - pulp
SE7510015L (en) * 1975-09-09 1977-03-10 Dev Ab Sca WAY TO TREAT LIGNOCELLULOSIS-CONTAINING MATERIAL
JPS583074B2 (en) * 1975-11-17 1983-01-19 三菱瓦斯化学株式会社 Palpuno Kasan Kabutsu Hiyou Hakuhou
JPS5927436B2 (en) * 1979-05-29 1984-07-05 王子製紙株式会社 Peroxide bleaching method for wood pulp
FR2476684A1 (en) * 1980-02-21 1981-08-28 Interox PROCESS FOR INHIBITING CORROSION OF TITANIUM APPLIANCES

Also Published As

Publication number Publication date
DE148712T1 (en) 1986-01-02
EP0148712B1 (en) 1987-09-09
FR2557605B1 (en) 1987-12-11
JPS6261716B2 (en) 1987-12-23
EP0148712A1 (en) 1985-07-17
CA1262805A (en) 1989-11-14
FR2557605A1 (en) 1985-07-05
FI76135C (en) 1992-04-15
ATE29537T1 (en) 1987-09-15
FI845121A0 (en) 1984-12-27
JPS60181391A (en) 1985-09-17
FI845121L (en) 1985-06-30
FI76135B (en) 1988-05-31
ES8602173A1 (en) 1985-11-16
AU567787B2 (en) 1987-12-03
ES539151A0 (en) 1985-11-16
DE3466024D1 (en) 1987-10-15

Similar Documents

Publication Publication Date Title
AU561035B2 (en) Detergents containing a peroxide compound
AU556458B2 (en) Detergent bleach compositions
AU567787B2 (en) Process and product for bleaching of chemical paper- making pulps
EP0319563A1 (en) Process for bleaching of materials with a dithionite solution.
PT86400A (en) Process for preparing aqueous solutions containing a mixture of hysozyme hydrochloride and dipotassium glycyrrhizate
US2166330A (en) Method of bleaching
ATE80677T1 (en) BLEACH SUPPLEMENT.
PT944549E (en) Method to produce sodium percarbonate
AU565124B2 (en) Hypochlorite treatment of chemical paper pulps
US5034202A (en) Removal of thiosulfate from hydrosulfite solutions
ZA935690B (en) Alkall containing silica solution
UST102905I4 (en) Control of sulfides in aqueous systems
GB1425901A (en) Pulping process
SU907118A1 (en) Method of preparing sodium polysulphide solution for pulp digestion
SE7904430L (en) MASS BLEACHING
AU6449286A (en) Process for bleaching chemical paper pulps
JPS6416900A (en) Detergent composition
SE8602057D0 (en) PROCEDURE FOR WHITENING OF NS-AQ OR SAP MASS
ES305710A3 (en) A procedure for the bleaching, especially of organic substances, in aqueous solutions of acids of clorites. (Machine-translation by Google Translate, not legally binding)
JPS57128765A (en) Reducing agent composition