ATE546585T1 - METHOD FOR PRODUCING CELLULOSE-CONTAINING PRODUCTS - Google Patents

METHOD FOR PRODUCING CELLULOSE-CONTAINING PRODUCTS

Info

Publication number
ATE546585T1
ATE546585T1 AT07861127T AT07861127T ATE546585T1 AT E546585 T1 ATE546585 T1 AT E546585T1 AT 07861127 T AT07861127 T AT 07861127T AT 07861127 T AT07861127 T AT 07861127T AT E546585 T1 ATE546585 T1 AT E546585T1
Authority
AT
Austria
Prior art keywords
suspension
thin
thick suspension
acid
earth metal
Prior art date
Application number
AT07861127T
Other languages
German (de)
Inventor
Patrik Simonson
Marek Tokarz
Katarina Gutke
Original Assignee
Akzo Nobel Nv
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 Akzo Nobel Nv filed Critical Akzo Nobel Nv
Priority claimed from PCT/SE2007/051032 external-priority patent/WO2008076071A1/en
Application granted granted Critical
Publication of ATE546585T1 publication Critical patent/ATE546585T1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/65—Acid compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The present invention relates to a process for the production of a cellulosic product which comprises providing an aqueous thick suspension containing cellulosic fibers having a fiber concentration of at least about 2% by weight; adding to the thick suspension an aluminum compound, alkaline earth metal salt and acid; diluting the obtained thick suspension to form a thin suspension; adding to the thin suspension one or more drainage and retention aids; and dewatering the obtained thin suspension. The invention further relates to a process for the production of a cellulosic product which comprises providing an aqueous thick suspension containing cellulosic fibers having a fiber concentration of at least about 2% by weight and an alkaline earth metal ion concentration of at least about 100 mg/l; adding to the thick suspension an aluminum compound and optionally an acid to obtain a pH of from about 4 to about 5.5; diluting the obtained thick suspension to form a thin suspension; adding to the thin suspension one or more drainage and retention aids; and dewatering the obtained thin suspension. The invention also relates to an aqueous composition comprising a mixture of an aluminum compound, alkaline earth metal salt and acid and the use of the composition.
AT07861127T 2006-12-21 2007-12-18 METHOD FOR PRODUCING CELLULOSE-CONTAINING PRODUCTS ATE546585T1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US87636906P 2006-12-21 2006-12-21
EP06126786 2006-12-21
PCT/SE2007/051032 WO2008076071A1 (en) 2006-12-21 2007-12-18 Process for the production of cellulosic product

Publications (1)

Publication Number Publication Date
ATE546585T1 true ATE546585T1 (en) 2012-03-15

Family

ID=38183025

Family Applications (1)

Application Number Title Priority Date Filing Date
AT07861127T ATE546585T1 (en) 2006-12-21 2007-12-18 METHOD FOR PRODUCING CELLULOSE-CONTAINING PRODUCTS

Country Status (4)

Country Link
CN (1) CN101573491A (en)
AT (1) ATE546585T1 (en)
BR (1) BRPI0720496A2 (en)
RU (1) RU2009128049A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114150527B (en) * 2021-12-17 2023-04-25 杭州绿邦科技有限公司 Retention and filter aid

Also Published As

Publication number Publication date
CN101573491A (en) 2009-11-04
BRPI0720496A2 (en) 2014-02-04
RU2009128049A (en) 2011-01-27

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