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BR9801457A - Paper making process - Google Patents

Paper making process

Info

Publication number
BR9801457A
BR9801457A BR9801457-9A BR9801457A BR9801457A BR 9801457 A BR9801457 A BR 9801457A BR 9801457 A BR9801457 A BR 9801457A BR 9801457 A BR9801457 A BR 9801457A
Authority
BR
Brazil
Prior art keywords
sheet
sludge
shear
stages
dmaem
Prior art date
Application number
BR9801457-9A
Other languages
Portuguese (pt)
Inventor
R Nagarajan
Jane B Wong Shing
Trinitina
Original Assignee
Nalco Chemical Co
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 Nalco Chemical Co filed Critical Nalco Chemical Co
Publication of BR9801457A publication Critical patent/BR9801457A/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
    • 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
    • D21H17/64—Alkaline 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
    • 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
    • D21H21/50—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 characterised by form

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)

Abstract

"PROCESSO PARA FABRICAçãO DE PAPEL". A invenção reivindicada compreende um processo de fabricação de papel, compreendendo formar uma lama celulósica aquosa de fabricação de papel, submeter a lama a um ou mais estágios de cisalhamento, adicionar à lama uma carga mineral antes de pelo menos um dos estágios de cisalhamento, adicionar à lama, após a adição da carga mineral e antes de pelo menos um dos estágios de cisalhamento, uma quantidade eficaz de um polímero de dispersão, selecionado do grupo consistindo de copolímeros de acrilamida e sal quaternário de cloreto de metila de dimetilaminoetilacrilato (DMAEA.MCQ), sal quaternário de cloreto de metila de dimetilaminoetilmetacrilato (DMAEM.MCQ), sal quternário de cloreto de benzila de dmetilaminoetilacrilato (DMAEA.BCQ) e sal quaternário de cloreto de benzila de dimetilaminoetilmetacrilato (DMAEM.BCQ) e cloreto de dialildimetilamónio (DADMAC), cisalhar a lama, adicionar uma micropartícula selecionada do grupo consistindo de orgânicos tais como copolímeros do ácido poliacrílico, inorgânicos tais como bentonita e sol de sílica, drenar a lama para formar uma folha e secar a folha para formar uma folha de papel."PAPER MANUFACTURING PROCESS". The claimed invention comprises a papermaking process, comprising forming an aqueous cellulosic papermaking slurry, subjecting the sludge to one or more shear stages, adding a mineral filler to the sludge before at least one of the shearing stages, adding to the mud, after adding the mineral filler and before at least one of the shear stages, an effective amount of a dispersion polymer, selected from the group consisting of acrylamide copolymers and dimethylaminoethylacrylate methyl chloride quaternary salt (DMAEA.MCQ ), dimethylaminoethylmethacrylate methyl chloride quaternary salt (DMAEM.MCQ), dmethylaminoethylacrylate benzyl chloride salt (DMAEA.BCQ) and dimethylaminoethylmethacrylate benzyl chloride (DMAEMBC) (DMAEM.C) , shear the mud, add a microparticle selected from the group consisting of organics such as copoly polyacrylic acid, inorganic mers such as bentonite and silica sol, drain the sludge to form a sheet and dry the sheet to form a sheet of paper.

BR9801457-9A 1997-04-25 1998-04-24 Paper making process BR9801457A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84579597A 1997-04-25 1997-04-25

Publications (1)

Publication Number Publication Date
BR9801457A true BR9801457A (en) 1999-09-28

Family

ID=25296102

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9801457-9A BR9801457A (en) 1997-04-25 1998-04-24 Paper making process

Country Status (9)

Country Link
KR (1) KR19980081711A (en)
AR (1) AR015602A1 (en)
AU (1) AU6349598A (en)
BR (1) BR9801457A (en)
CA (1) CA2235637A1 (en)
ID (1) ID20222A (en)
NO (1) NO981776L (en)
NZ (1) NZ330264A (en)
ZA (1) ZA983197B (en)

Also Published As

Publication number Publication date
ID20222A (en) 1998-10-29
AR015602A1 (en) 2001-05-16
NO981776D0 (en) 1998-04-21
AU6349598A (en) 1998-10-29
NZ330264A (en) 1998-10-28
CA2235637A1 (en) 1998-10-25
NO981776L (en) 1998-10-26
ZA983197B (en) 1998-11-25
KR19980081711A (en) 1998-11-25

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law