CA1282212C - Procede pour la regulation du depot du brai des systemes papetiers - Google Patents

Procede pour la regulation du depot du brai des systemes papetiers

Info

Publication number
CA1282212C
CA1282212C CA000535164A CA535164A CA1282212C CA 1282212 C CA1282212 C CA 1282212C CA 000535164 A CA000535164 A CA 000535164A CA 535164 A CA535164 A CA 535164A CA 1282212 C CA1282212 C CA 1282212C
Authority
CA
Canada
Prior art keywords
pulp
units
polyvinyl alcohol
copolymer
polymer
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
CA000535164A
Other languages
English (en)
Inventor
David D. Dreisbach
Gilbert S. Gomes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hercules LLC
Original Assignee
Betz Laboratories 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
Application filed by Betz Laboratories Inc filed Critical Betz Laboratories Inc
Application granted granted Critical
Publication of CA1282212C publication Critical patent/CA1282212C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
    • D21C9/086—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with organic compounds or compositions comprising organic compounds

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
CA000535164A 1986-07-02 1987-04-21 Procede pour la regulation du depot du brai des systemes papetiers Expired - Lifetime CA1282212C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88137886A 1986-07-02 1986-07-02
US881,378 1986-07-02

Publications (1)

Publication Number Publication Date
CA1282212C true CA1282212C (fr) 1991-04-02

Family

ID=25378359

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000535164A Expired - Lifetime CA1282212C (fr) 1986-07-02 1987-04-21 Procede pour la regulation du depot du brai des systemes papetiers

Country Status (3)

Country Link
EP (1) EP0252615A3 (fr)
CA (1) CA1282212C (fr)
FI (1) FI872913A (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU670654A1 (ru) * 1977-12-20 1979-06-30 Ленинградская Ордена Ленина Лесотехническая Академия Им.С.М.Кирова Состав дл обессмоливани целлюлозы
JPS6155294A (ja) * 1984-08-22 1986-03-19 株式会社片山化学工業研究所 ピツチ分散剤
US4886575A (en) * 1985-10-08 1989-12-12 Betz Laboratories, Inc. Detackification of adhesive materials contained in secondary fiber with polyvinyl alcohol

Also Published As

Publication number Publication date
EP0252615A3 (fr) 1988-03-23
FI872913A (fi) 1988-01-03
EP0252615A2 (fr) 1988-01-13
FI872913A0 (fi) 1987-07-01

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Legal Events

Date Code Title Description
MKEX Expiry