ATE34790T1 - METHOD OF BLEACHING WOOD Pulp. - Google Patents

METHOD OF BLEACHING WOOD Pulp.

Info

Publication number
ATE34790T1
ATE34790T1 AT84112648T AT84112648T ATE34790T1 AT E34790 T1 ATE34790 T1 AT E34790T1 AT 84112648 T AT84112648 T AT 84112648T AT 84112648 T AT84112648 T AT 84112648T AT E34790 T1 ATE34790 T1 AT E34790T1
Authority
AT
Austria
Prior art keywords
wood pulp
salts
bleaching
bleaching wood
acid
Prior art date
Application number
AT84112648T
Other languages
German (de)
Inventor
Harald Dr Beurich
Margarete Scholl
Original Assignee
Benckiser Knapsack Gmbh
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 Benckiser Knapsack Gmbh filed Critical Benckiser Knapsack Gmbh
Application granted granted Critical
Publication of ATE34790T1 publication Critical patent/ATE34790T1/en

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
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3937—Stabilising agents
    • C11D3/394—Organic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)

Abstract

1. Process for the bleaching of mechanical wood pulp in peroxide solutions, characterized in that one carries out the bleaching procedure without silicates in the presence of 1.phosphonic acids or their salts, 2. gluconic acid, citric acid, N,N-dihydroxyethyleneglycine, DTPA, EDTA, NTA or their mixtures or salts and 3. phosphoric acid or its salts.
AT84112648T 1983-10-21 1984-10-19 METHOD OF BLEACHING WOOD Pulp. ATE34790T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3338260A DE3338260C1 (en) 1983-10-21 1983-10-21 Process and means for bleaching groundwood
EP84112648A EP0141355B1 (en) 1983-10-21 1984-10-19 Process for bleaching ground wood pulp

Publications (1)

Publication Number Publication Date
ATE34790T1 true ATE34790T1 (en) 1988-06-15

Family

ID=6212408

Family Applications (1)

Application Number Title Priority Date Filing Date
AT84112648T ATE34790T1 (en) 1983-10-21 1984-10-19 METHOD OF BLEACHING WOOD Pulp.

Country Status (3)

Country Link
EP (1) EP0141355B1 (en)
AT (1) ATE34790T1 (en)
DE (2) DE3338260C1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531563A1 (en) * 1985-09-04 1987-03-05 Benckiser Knapsack Gmbh WOOD FABRICS
GB8826431D0 (en) * 1988-11-11 1988-12-14 Albright & Wilson Phosphate composition
DE4224607A1 (en) * 1992-07-25 1994-01-27 Benckiser Knapsack Ladenburg New biodegradable ether carboxylate stabilising agent - useful for oxidative or reductive bleaching of TMP, CTMP, mechanical wood pulp or chemical pulp and for de-inking waste paper
RU2131491C1 (en) * 1993-10-26 1999-06-10 Акцо Нобель Н.В. Method of bleaching cellulose pulp (its version), biodegradable chelation agent for bleaching cellulose pulp with hydrogen peroxide, and method of removing printer's ink from cellulose pulp
DE19528843A1 (en) * 1995-08-04 1997-02-06 Cht R Beitlich Gmbh Process for the stabilization of alkaline peroxide-containing bleaching liquors for the bleaching of cellulose and other fibrous materials
FI115470B (en) * 1996-02-19 2005-05-13 Kemira Oyj Process for the treatment of chemical cellulose material
FI115641B (en) * 1996-02-19 2005-06-15 Kemira Oyj Bleaching process for high yields
SE9604414D0 (en) * 1996-11-29 1996-11-29 Eka Chemicals Ab Chemical composition
SE9604413D0 (en) * 1996-11-29 1996-11-29 Eka Chemicals Ab Chemical composition
GB0721587D0 (en) 2007-11-02 2007-12-12 Innospec Ltd Process for bleaching pulp
EP2225175B1 (en) 2007-12-13 2012-12-12 Akzo Nobel N.V. Stabilized hydrogen peroxide solutions
US11666199B2 (en) 2018-12-12 2023-06-06 Owens Corning Intellectual Capital, Llc Appliance with cellulose-based insulator
US11207863B2 (en) 2018-12-12 2021-12-28 Owens Corning Intellectual Capital, Llc Acoustic insulator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1052797B (en) * 1951-08-08 1959-03-12 Scott Paper Co Process for bleaching wood pulp
DE1052798B (en) * 1952-09-11 1959-03-12 Scott Paper Co Process for bleaching wood pulp
US3740187A (en) * 1971-06-03 1973-06-19 Monsanto Co Processes for bleaching textiles
DE2209358A1 (en) * 1972-02-27 1973-09-13 Henkel & Cie Gmbh Bleaching agent - contg diphenyl-distyryl type brightener
DE2500209B2 (en) * 1975-01-03 1977-03-03 Benckiser-Knapsack Gmbh, 6802 Ladenburg METHOD AND MEANS OF PREVENTION OF RESIN PRECIPITATION IN PAPER MANUFACTURING
US4294575A (en) * 1979-01-02 1981-10-13 Monsanto Company Peroxide stabilization
GB2072643B (en) * 1980-04-01 1983-06-08 Interox Chemicals Ltd Aqueous h2 o2 bleach compositions

Also Published As

Publication number Publication date
EP0141355A1 (en) 1985-05-15
DE3471705D1 (en) 1988-07-07
EP0141355B1 (en) 1988-06-01
DE3338260C1 (en) 1985-07-25

Similar Documents

Publication Publication Date Title
ATE34790T1 (en) METHOD OF BLEACHING WOOD Pulp.
DE3889332T2 (en) Process for the prevention of deposits in cellulose boilers.
DE3672577D1 (en) METHOD FOR THE BLEACHING AND DELIGNIFICATION OF CELLULAR-BASED PRODUCTS.
DE69420306D1 (en) Process for bleaching lignocellulosic pulp
SE8603593L (en) PROCEDURE FOR OXIDATIVE OR REDUCTIVE WHITENING OF TREMASS
ATE84581T1 (en) METHOD OF BLEACHING PULP.
DE3273072D1 (en) Process for bleaching fibrous materials with oligomers of phosphonic acids as stabilizing agents in alcaline, peroxide-containing bleaching baths
DE3485160D1 (en) METHOD FOR ETCHING USED IN THE PRODUCTION OF SEMICONDUCTOR ARRANGEMENTS.
DE68912543T2 (en) Process for bleaching ink-free pulp.
ATE56149T1 (en) METHOD OF PASTEURIZING FIBRONECTIN.
ATE119593T1 (en) METHOD FOR ENZYMATIC BLEACHING OF PULP.
ATE7607T1 (en) PARTIAL THROMBOPLASTIN.
DE69100801D1 (en) Bleaching process.
DE313478T1 (en) METHOD FOR BLEACHING PULPS.
AT357864B (en) METHOD FOR PEROXIDE BLEACHING OF MECHANICAL WOOD
ATE151479T1 (en) IMPROVED METHOD FOR BLEACHING WOOD MATERIALS
ATE131886T1 (en) METHOD FOR BLEACHING PULP IN ALIPHATIC MONOCARBONIC ACIDS
ATE69034T1 (en) PROCESS FOR PRODUCTION OF POLYCHLOROPHOSPHAZEN.
ATA277084A (en) POWER PROCESS FOR PRODUCING PULP AND DEVICE FOR REGULATING THE ACTIVE ALKALINE CONCENTRATION IN THIS PROCESS
DE3674866D1 (en) METHOD FOR DELIGNIFYING CELLULOSE MATERIALS.
DE3674859D1 (en) METHOD FOR DELIGNIFYING CELLULOSE MATERIALS.
DE3667184D1 (en) METHOD FOR BLEACHING CHEMICAL WOOD PULPS.
FR2572430B1 (en) IMPROVEMENT IN OXIDIZING BLEACHING PROCESSES CARRIED OUT IN AN ACID MEDIUM.
ES8404713A1 (en) Method of box-annealing steel sheet to minimize annealing stickers.
ATE35433T1 (en) METHODS OF PREPARING CHEMICAL WOOD PULP FOR BLEACHING.