DE3471705D1 - Process for bleaching ground wood pulp - Google Patents

Process for bleaching ground wood pulp

Info

Publication number
DE3471705D1
DE3471705D1 DE8484112648T DE3471705T DE3471705D1 DE 3471705 D1 DE3471705 D1 DE 3471705D1 DE 8484112648 T DE8484112648 T DE 8484112648T DE 3471705 T DE3471705 T DE 3471705T DE 3471705 D1 DE3471705 D1 DE 3471705D1
Authority
DE
Germany
Prior art keywords
wood pulp
bleaching
salts
ground wood
bleaching ground
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.)
Expired
Application number
DE8484112648T
Other languages
German (de)
Inventor
Harald Dr Beurich
Margarete Scholl
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.)
BK Giulini Chemie GmbH
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
Priority to DE8484112648T priority Critical patent/DE3471705D1/en
Application granted granted Critical
Publication of DE3471705D1 publication Critical patent/DE3471705D1/en
Expired 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
    • D21C9/1026—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.
DE8484112648T 1983-10-21 1984-10-19 Process for bleaching ground wood pulp Expired DE3471705D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8484112648T DE3471705D1 (en) 1983-10-21 1984-10-19 Process for bleaching ground wood pulp

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
DE8484112648T DE3471705D1 (en) 1983-10-21 1984-10-19 Process for bleaching ground wood pulp

Publications (1)

Publication Number Publication Date
DE3471705D1 true DE3471705D1 (en) 1988-07-07

Family

ID=6212408

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3338260A Expired DE3338260C1 (en) 1983-10-21 1983-10-21 Process and means for bleaching groundwood
DE8484112648T Expired DE3471705D1 (en) 1983-10-21 1984-10-19 Process for bleaching ground wood pulp

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE3338260A Expired DE3338260C1 (en) 1983-10-21 1983-10-21 Process and means for bleaching groundwood

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
CZ286131B6 (en) * 1993-10-26 2000-01-12 Akzo Nobel N. V. Aminoalkanediphosphonic acids employed for bleaching cellulose
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
FI115641B (en) * 1996-02-19 2005-06-15 Kemira Oyj Bleaching process for high yields
FI115470B (en) * 1996-02-19 2005-05-13 Kemira Oyj Process for the treatment of chemical cellulose material
SE9604413D0 (en) * 1996-11-29 1996-11-29 Eka Chemicals Ab Chemical composition
SE9604414D0 (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
US3795625A (en) * 1971-06-03 1974-03-05 Monsanto Co Bleaching compositions
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
EP0141355B1 (en) 1988-06-01
ATE34790T1 (en) 1988-06-15
DE3338260C1 (en) 1985-07-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: BK GIULINI CHEMIE GMBH & CO. OHG, 67065 LUDWIGSHAF

8339 Ceased/non-payment of the annual fee