CA1282212C - Procede pour la regulation du depot du brai des systemes papetiers - Google Patents
Procede pour la regulation du depot du brai des systemes papetiersInfo
- 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
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)
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)
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 |
-
1987
- 1987-04-21 CA CA000535164A patent/CA1282212C/fr not_active Expired - Lifetime
- 1987-06-11 EP EP87305162A patent/EP0252615A3/fr not_active Withdrawn
- 1987-07-01 FI FI872913A patent/FI872913A/fi not_active Application Discontinuation
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 |