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WO1998004775A1 - Utilisation d'agents complexants pour le blanchiment de la cellulose et du bois, pour la fabrication du papier et le desencrage de vieux papiers - Google Patents

Utilisation d'agents complexants pour le blanchiment de la cellulose et du bois, pour la fabrication du papier et le desencrage de vieux papiers Download PDF

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Publication number
WO1998004775A1
WO1998004775A1 PCT/EP1997/003741 EP9703741W WO9804775A1 WO 1998004775 A1 WO1998004775 A1 WO 1998004775A1 EP 9703741 W EP9703741 W EP 9703741W WO 9804775 A1 WO9804775 A1 WO 9804775A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
complexing agents
acid
bleaching
deinking
Prior art date
Application number
PCT/EP1997/003741
Other languages
German (de)
English (en)
Inventor
Birgit Potthoff-Karl
Primoz Lorencak
Original Assignee
Basf Aktiengesellschaft
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 Basf Aktiengesellschaft filed Critical Basf Aktiengesellschaft
Priority to AU36234/97A priority Critical patent/AU3623497A/en
Publication of WO1998004775A1 publication Critical patent/WO1998004775A1/fr

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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D21C5/025—De-inking
    • D21C5/027—Chemicals therefor
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/64—Paper recycling

Definitions

  • the invention relates to the use of ethylenediaminedisuccinic acid, ethylenediaminediglutaric acid, hydroxypropylenediaminodisuccinic acid, its alkali metal or ammonium salts and mixtures of the compounds mentioned as complexing agents for alkaline earth metal and heavy metal ions in pulp and pulp bleaching, waste paper production and deinking.
  • Ethylene diamine disuccinic acid, 2-hydroxypropylene diaindisuccinic acid and ethylene diamine di glutaric acid and their alkali metal, alkaline earth metal and ammonium salts are known. They are used, for example, as complexing agents in detergents or in textile washing to reduce corrosion on washing machines, cf. WO-A-94/20599, WO-A-95/29220, WO-A-94/11099 and WO-A-94/03572.
  • WO-A-95/25159 discloses the use of manganese salts of ethylenediaminedisuccinic acid as a bleaching catalyst in detergents which contain conventional surfactants, perborate or percarbonate and a bleach activator.
  • the invention has for its object to provide new complexing agents for the paper industry, the pulp industry and deinking of printed waste paper.
  • the object is achieved with the use of ethylenediaminedisuccinic acid, ethylenediaminediglutaric acid, hydroxypropylenediaminedisuccinic acid, their alkali metal or ammonium salts and mixtures of the compounds mentioned as complexing agents for alkaline earth metal and heavy metal ions in the Pulp and wood pulp bleaching, paper production and deinking of waste paper.
  • the biodegradable S, S enantiomer of ethylenediaminedisuccinic acid is obtained by reacting 2 mol sodium acetate with
  • 1,2-dibromoethane 1 mol of 1,2-dibromoethane can be prepared.
  • the racemate of ethylenediamine disuccinic acid arises, for example, from the reaction of
  • Ethylene diaminediglutaric acid can be obtained, for example, by reacting 1,2-dibromoethane with sodium glutamate in a molar ratio of 1: 2.
  • 2-Hydroxypropylenediamine disuccinic acid can be obtained by reacting 2-hydroxy-1,3-dibro propane with sodium aspartate in a molar ratio of 1: 2.
  • a detailed description of the production of ethylenediamine disuccinic acid is given, for example, in US-A-3 158 635. At least 50% of the compounds described above are biodegradable.
  • the complexing agents described above are used in pulp bleaching, pulp production, pulp bleaching and deinking of printed waste paper.
  • the technical raw materials and auxiliary materials used in paper production mostly contain traces of heavy metals, especially iron and manganese ions.
  • the complexing agents to be used according to the invention can, for example, already be used in the mechanical pulping of wood in the so-called integrated paper factories in which fibrous material obtained from wood is processed into paper and paper products.
  • Known methods for mechanical wood pulping include conventional stone grinding GMP (Groundwood Mechanical-Pulp), refiner wood pulp RMP (Refiner-Mechanical-Pulp), thermomechanical wood pulp TMP (Thermo-Mechanical Pulp) and pressure grinding PGW (Pressure Groundwood).
  • Refiner wood pulp and thermomechanical wood pulp can optionally be subjected to a chemical pretreatment. They are then called CRMP or CTMP. You also know the so-called brown cut.
  • the above-mentioned types of wood pulp contain different splinter contents, long fiber, short fiber and fine material.
  • TMP and CTMP materials contain hardly any splinters and can be processed into papers with significantly better strengths than the other wood materials. You can bleach both fine sanding, normal sanding and coarse sanding.
  • iron III ions react with constituents of the wood to form dark-colored compounds.
  • complexing agents In the manufacture of the paper raw materials, in particular in the pulp bleaching process, the paper raw material can already be brightened, so that after the bleaching is finished, the whiteness is about 2-3 points higher than without the use of complexing agents.
  • an increase in whiteness is achieved in oxidative, reductive or combined bleaching compared to substances which do not contain any complexing agents.
  • Processes for reductive pulp bleaching with dithionite and for oxidative bleaching with hydrogen peroxide are known, cf. H. Schroter, Die Holzschliffbleiche, Günther-Staib-Verlag, Biberach an der Riß, 1976.
  • the compounds to be used according to the invention are also used as de-complexing agents in deinking of printed waste paper.
  • the printed waste paper is opened and treated with a combination of peroxide, sodium hydroxide, water glass, dispersant and collector.
  • peroxide sodium hydroxide
  • water glass water glass
  • dispersant and collector a combination of peroxide, sodium hydroxide, water glass, dispersant and collector.
  • the use of the compounds to be used according to the invention in papermaking prevents or reduces the negative influence of water hardness in papermaking. Due to the ever increasing closure of the water cycle in paper machines, there is a constant accumulation of hardness builders. This can lead to a precipitation of carbonates and silicates, which can directly impair the paper properties, such as strength, absorbency, dyeability and the dust behavior of the paper. The hardening agents can also adversely affect the effectiveness of auxiliaries and the properties of dyes.
  • the use of the complexing agents to be used according to the invention in papermaking also has the advantage that precipitations of hardness agents with resin glue or cellulose resin and precipitation products of aluminum sulfate are suppressed or dissolved, so that laying of the wet felts of the paper machines can be largely prevented. This keeps the felts drained for a longer period of time.
  • ethylenediaminedisuccinic acid or the mono-, di-, tri- or tetrasodium salts of ethylenediaminedisuccinic acid.
  • Based on dry fiber material for example 0.02 to 0.5, preferably 0.1 to 0.3% by weight of a complexing agent is used.
  • 100 g of a wood pulp suspension with a consistency of 4% are filled into a polyethylene bag and mixed with 1% sodium dithionite and 0.06% ethylene-N, N'-diaminedisuccinic acid in the form of the tetrasodium salt, based on dry wood pulp.
  • the pH of the groundwood slurry is 6.
  • the bag is then closed and the contents are homogenized by intensive kneading. After mixing the contents, the bag is placed in a water bath at a temperature of 60 ° C for 1 hour.
  • Example 1 was repeated with the only exception that the bleaching was carried out in the absence of a complexing agent.
  • the whiteness of sheets of paper made from the bleached wood pulp slurry was 69.8%.

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

On utilise l'acide disuccinique de diamine d'hydroxypropylène, l'acide diglutarique de diamine d'éthylène, l'acide disuccinique de diamine d'hydroxypropylène, leurs sels de métaux alcalins ou d'ammonium et des mélanges de ces composés comme agents complexants d'ions de métaux alcalino-terreux et d'ions de métaux lourds pour le blanchiment de la cellulose et du bois, la fabrication du papier et le désencrage de vieux papiers.
PCT/EP1997/003741 1996-07-26 1997-07-14 Utilisation d'agents complexants pour le blanchiment de la cellulose et du bois, pour la fabrication du papier et le desencrage de vieux papiers WO1998004775A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU36234/97A AU3623497A (en) 1996-07-26 1997-07-14 Use of complexing agents for cellulose and wood bleaching, paper production and used paper deinking

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19630278.1 1996-07-26
DE1996130278 DE19630278A1 (de) 1996-07-26 1996-07-26 Komplexbildner für die Zellstoff- und Holzstoffbleiche, die Papierherstellung sowie das Deinking von Altpapier

Publications (1)

Publication Number Publication Date
WO1998004775A1 true WO1998004775A1 (fr) 1998-02-05

Family

ID=7800989

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1997/003741 WO1998004775A1 (fr) 1996-07-26 1997-07-14 Utilisation d'agents complexants pour le blanchiment de la cellulose et du bois, pour la fabrication du papier et le desencrage de vieux papiers

Country Status (3)

Country Link
AU (1) AU3623497A (fr)
DE (1) DE19630278A1 (fr)
WO (1) WO1998004775A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2333772A (en) * 1998-01-31 1999-08-04 Procter & Gamble Complexing agents (eg ethylenediamine disuccinic acid) for use in selectively complexing copper, iron, zinc, nickel and cobalt in the presence of calcium
BE1011784A3 (fr) * 1998-03-10 2000-01-11 Solvay Procede de blanchiment de pate a papier.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128084A1 (de) * 1991-08-24 1993-02-25 Basf Ag Verwendung von (beta)-alanin-n,n-diessigsaeure und deren alkalimetall- oder ammoniumsalzen als komplexbildner
WO1994003553A1 (fr) * 1992-08-01 1994-02-17 The Procter & Gamble Company Composition de blanchiment peroxy stabilisee a l'acide ethylenediamine-n,n'-disuccinique
WO1994020599A1 (fr) * 1993-03-05 1994-09-15 The Procter & Gamble Company Produits detergents a base d'acides ethylenediamine-n,n'-diglutarique et 2-hydroxypropylenediamine-n,n'-disuccinique
WO1994028464A1 (fr) * 1993-05-20 1994-12-08 The Dow Chemical Company Chelateurs degradables derives de l'acide succinique, leurs utilisations et leurs compositions
WO1997030208A1 (fr) * 1996-02-19 1997-08-21 Kemira Chemicals Oy Procede applicable au traitement de la pate chimique
WO1997030209A1 (fr) * 1996-02-19 1997-08-21 Kemira Chemicals Oy Procede de blanchiment de pate haut rendement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128084A1 (de) * 1991-08-24 1993-02-25 Basf Ag Verwendung von (beta)-alanin-n,n-diessigsaeure und deren alkalimetall- oder ammoniumsalzen als komplexbildner
WO1994003553A1 (fr) * 1992-08-01 1994-02-17 The Procter & Gamble Company Composition de blanchiment peroxy stabilisee a l'acide ethylenediamine-n,n'-disuccinique
WO1994020599A1 (fr) * 1993-03-05 1994-09-15 The Procter & Gamble Company Produits detergents a base d'acides ethylenediamine-n,n'-diglutarique et 2-hydroxypropylenediamine-n,n'-disuccinique
WO1994028464A1 (fr) * 1993-05-20 1994-12-08 The Dow Chemical Company Chelateurs degradables derives de l'acide succinique, leurs utilisations et leurs compositions
WO1997030208A1 (fr) * 1996-02-19 1997-08-21 Kemira Chemicals Oy Procede applicable au traitement de la pate chimique
WO1997030209A1 (fr) * 1996-02-19 1997-08-21 Kemira Chemicals Oy Procede de blanchiment de pate haut rendement

Also Published As

Publication number Publication date
AU3623497A (en) 1998-02-20
DE19630278A1 (de) 1998-01-29

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