BR8404914A - Processo para o tratemento de madeira e polpa de madeira,polpa de madeira resultante,produto de papel e composicao de materia - Google Patents

Processo para o tratemento de madeira e polpa de madeira,polpa de madeira resultante,produto de papel e composicao de materia

Info

Publication number
BR8404914A
BR8404914A BR8404914A BR8404914A BR8404914A BR 8404914 A BR8404914 A BR 8404914A BR 8404914 A BR8404914 A BR 8404914A BR 8404914 A BR8404914 A BR 8404914A BR 8404914 A BR8404914 A BR 8404914A
Authority
BR
Brazil
Prior art keywords
wood
wood pulp
treatment
material composition
paper product
Prior art date
Application number
BR8404914A
Other languages
English (en)
Portuguese (pt)
Inventor
G Graham Allan
Original Assignee
Melamine Chemicals Inc
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
Priority claimed from US06/537,876 external-priority patent/US4487656A/en
Application filed by Melamine Chemicals Inc filed Critical Melamine Chemicals Inc
Publication of BR8404914A publication Critical patent/BR8404914A/pt

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
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/07—Nitrogen-containing compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/14—Disintegrating in mills
    • D21B1/16—Disintegrating in mills in the presence of chemical agents
    • 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
    • D21C9/001—Modification of pulp properties
    • D21C9/002—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives
    • D21C9/005—Modification of pulp properties by chemical means; preparation of dewatered pulp, e.g. in sheet or bulk form, containing special additives organic compounds
    • 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
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Prostheses (AREA)
BR8404914A 1983-09-30 1984-09-28 Processo para o tratemento de madeira e polpa de madeira,polpa de madeira resultante,produto de papel e composicao de materia BR8404914A (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US53792783A 1983-09-30 1983-09-30
US53792683A 1983-09-30 1983-09-30
US06/537,876 US4487656A (en) 1983-09-30 1983-09-30 Process for bleaching paper pulp using melamine as a viscosity stabilizer
US65175184A 1984-09-19 1984-09-19

Publications (1)

Publication Number Publication Date
BR8404914A true BR8404914A (pt) 1985-08-20

Family

ID=27504668

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8404914A BR8404914A (pt) 1983-09-30 1984-09-28 Processo para o tratemento de madeira e polpa de madeira,polpa de madeira resultante,produto de papel e composicao de materia

Country Status (10)

Country Link
AT (1) ATA310984A (it)
BR (1) BR8404914A (it)
DE (1) DE3436015A1 (it)
FI (1) FI74082C (it)
FR (1) FR2552792B1 (it)
GB (1) GB2148344B (it)
IT (1) IT1180236B (it)
NO (1) NO843919L (it)
NZ (1) NZ209708A (it)
SE (1) SE464031B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4230655A1 (de) * 1992-09-14 1994-03-17 Ciba Geigy Verfahren zur Verbesserung von Weißgrad, Helligkeit und Farbort von Faserstoffen
DE4230656A1 (de) * 1992-09-14 1994-03-17 Ciba Geigy Verfahren zur Verbesserung von Weissgrad, Helligkeit und Farbort von Füllstoffen und Pigmenten
CN115110329A (zh) * 2022-06-28 2022-09-27 中国制浆造纸研究院有限公司 一种降低漂白段纸浆中金属含量和灰分含量的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB600961A (en) * 1944-09-20 1948-04-23 Du Pont Improvements in or relating to the impregnation of wood with urea-formaldehyde resins
BE566286A (it) * 1957-04-02
FR1281896A (fr) * 1960-09-07 1962-01-19 Westinghouse Electric Corp Procédé de stabilisation d'isolation cellulosique en contact avec des diélectriques liquides
GB1500599A (en) * 1975-11-28 1978-02-08 Koppers Co Inc Compositions for imparting fire retardance to wood

Also Published As

Publication number Publication date
GB2148344A (en) 1985-05-30
SE8404867L (sv) 1985-03-31
FI74082B (fi) 1987-08-31
GB2148344B (en) 1987-04-15
GB8424540D0 (en) 1984-11-07
FI74082C (fi) 1987-12-10
DE3436015C2 (it) 1990-03-08
FR2552792B1 (fr) 1987-01-09
SE464031B (sv) 1991-02-25
NZ209708A (en) 1988-08-30
IT1180236B (it) 1987-09-23
ATA310984A (de) 1991-11-15
NO843919L (no) 1985-04-01
SE8404867D0 (sv) 1984-09-28
FI843831L (fi) 1985-03-31
DE3436015A1 (de) 1985-05-02
FI843831A0 (fi) 1984-09-28
FR2552792A1 (fr) 1985-04-05
IT8422893A0 (it) 1984-09-28

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