NO981776L - Method of making paper - Google Patents

Method of making paper

Info

Publication number
NO981776L
NO981776L NO981776A NO981776A NO981776L NO 981776 L NO981776 L NO 981776L NO 981776 A NO981776 A NO 981776A NO 981776 A NO981776 A NO 981776A NO 981776 L NO981776 L NO 981776L
Authority
NO
Norway
Prior art keywords
pulp
inorganic acid
quaternary salt
cutting steps
cutting
Prior art date
Application number
NO981776A
Other languages
Norwegian (no)
Other versions
NO981776D0 (en
Inventor
R Nagarajan
Jane B Wong Shing
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 NO981776D0 publication Critical patent/NO981776D0/en
Publication of NO981776L publication Critical patent/NO981776L/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

Oppfinnelsen vedrører en papirfremstillingsprosess omfattende å danne en vandig celluloseholdig papir- fremstillingsmasse, underkaste massen en eller fle- re skjærtrinn, tilsette massen et mineralfyllstoff før i det minste ett av skjærtrinnene, tilsette massen, etter tilsetning av mineralfyllstoffer og før minst ett av skjærtrinnene, en effektiv mengde av en dispersjon av. en polymer valgt fra gruppen bestående av kopolymerer av akrylamid og dimetyla- minoetylakrylat-metylklorid kvaternært salt (DMA- EA.MCQ), dimetylaminoetylmetakrylat-metylklorid - kvaternært salt (DMAEM.MCQ), dimetylaminoetylakry- lat-benzylklorid kvaternært salt (DMAEM.BCQ) og di- metylkaminoetyl-metakrylat-benzylklorid kvaternært salt DMAEM.BCQ) og diallyldimetylammoniumklorid (DADMAC), skjærbehandle oppslemningen og tilsette en mikropartikkel valgt fra gruppen bestående av organiske forbindelser så som kopolymerer av poly- akrylsyre eller uorganiske partikler så som bento- nitt og silikasol, hvoretter massen awannes for dannelse av et ark som deretter tørkes til å gi et papirark.The invention relates to a papermaking process comprising forming an aqueous cellulosic papermaking mass, subjecting the pulp to one or more cutting steps, adding the pulp to a mineral filler prior to at least one of the cutting steps, adding the pulp, after adding mineral fillers and prior to at least one of the cutting steps, effective amount of a dispersion of. a polymer selected from the group consisting of copolymers of acrylamide and dimethylaminoacrylate-methyl chloride quaternary salt (DMA-EA.MCQ), dimethylaminoethylmethacrylate-methyl chloride - quaternary salt (DMAEM.MCQ), dimethylaminoethylacrylate-quartz benzyl chloride and dimethylquaminoethyl methacrylate benzyl chloride quaternary salt DMAEM.BCQ) and diallyldimethylammonium chloride (DADMAC), cutting the slurry and adding a microparticle selected from the group consisting of organic compounds such as copolymers of polyacrylic acid and inorganic acid or inorganic acid or inorganic acid or , after which the pulp is dewatered to form a sheet which is then dried to give a sheet of paper.

NO981776A 1997-04-25 1998-04-21 Method of making paper NO981776L (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
NO981776D0 NO981776D0 (en) 1998-04-21
NO981776L true NO981776L (en) 1998-10-26

Family

ID=25296102

Family Applications (1)

Application Number Title Priority Date Filing Date
NO981776A NO981776L (en) 1997-04-25 1998-04-21 Method of making paper

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
AR015602A1 (en) 2001-05-16
NZ330264A (en) 1998-10-28
CA2235637A1 (en) 1998-10-25
NO981776D0 (en) 1998-04-21
ID20222A (en) 1998-10-29
BR9801457A (en) 1999-09-28
KR19980081711A (en) 1998-11-25
ZA983197B (en) 1998-11-25
AU6349598A (en) 1998-10-29

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application