GR1000332B - Resins control systems - Google Patents
Resins control systemsInfo
- Publication number
- GR1000332B GR1000332B GR890100006A GR890100006A GR1000332B GR 1000332 B GR1000332 B GR 1000332B GR 890100006 A GR890100006 A GR 890100006A GR 890100006 A GR890100006 A GR 890100006A GR 1000332 B GR1000332 B GR 1000332B
- Authority
- GR
- Greece
- Prior art keywords
- tar
- partitioned
- composition
- water
- cationic polymer
- Prior art date
Links
Landscapes
- Paper (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Περιγράφεται μέθοδος και ουσίες για τη μείωση της πίσσας σε πολτοποιητικές και χαρτοποιητικές διεργασίες, ιδιαίτερα σε συνθέσεις παρασκευαζόμενες με μηχανικές πολτοποιητικές διαδικασίες και περιέχουσες ξυλοπολτό σε ποσότητες μεγαλύτερες του 10% κ.β. Η μέθοδος περιλαμβάνει την προσθήκη σε σύνθεση περιέχουσα σύνθεση, σταθερής υδατοδιασπάρσιμης διαμερισμένης σύνθετης ουσίας παρασκευασμένης με ανεπίστροφη προσρόφηση υδατοδιαλυτού κατιοντικού πολυμερούς, π.χ. ενός πολυ(χλωριούχου διαλλυλοδιμεθυλαμμωνίου), σε ένα ουσιαστικώς υδατοαδιάλυτο διαμερισμένο υπόστρωμα, π.χ. καολίνη, καθισταμένου τοιουτοτρόπως του κατιοντικού πολυμερούς αδιαλύτου και ακινήτου, ενώ είναι επαρκώς ηλεκτροθετικό ώστε η διαμερισμένη σύνθετη ουσία ελέγχου πίσσας να εμφανίζει ζήτα δυναμικό τουλάχιστον + 30 m V περίπου, και κατά προτίμηση από περίπου + 60 m V έως περίπου + 80 m V, και η ποσότητα της σύνθετης ουσίας που προστίθεται στη σύνθεση είναι αποτελεσματική για να διασπείρει λεπτώς την προς απομάκρυνση πίσσα υπό μορφή λεπτώς διεσπαρμένων και περιεχόντων πίσσα συσσωματωμάτων σε φύλλο χάρτου παραγόμενο από την εν λόγω σύνθεση. Στον έλεγχο της πίσσας μπορούν να επιτευχθούν και περαιτέρω βελτιώσεις χρησιμοποιώντας τις διαμερισμένες αυτές σύνθετες ουσίες ελέγχου πίσσας μαζί με στυπτηρία και/ή σχετικώς υψηλομοριακά αλκυλενοξειδικά πολυμερή και να ληφθούν επίσης κατά την εφαρμογή στην πράξη της εφευρέσεως, και άλλα επιθυμητά αποτελέσματα, συμπεριλαμβανομένων της βελτιωμένης κατακράτησης ινιδίων, της καλύτερης αποστράγγισης και του χαμηλώτερου κόστους κατεργασίας αποβλήτων. ωDescribes a method and substances for the reduction of tar in pulping and papermaking processes, particularly in compositions prepared by mechanical pulping processes and containing wood pulp in amounts greater than 10% by weight. The method comprises adding to a composition containing a stable water-dispersible partitioned composite prepared by irreversible adsorption of a water-soluble cationic polymer, e.g. of a poly(diallyldimethylammonium chloride), on a substantially water-insoluble partitioned support, e.g. kaolin, thereby rendering the cationic polymer insoluble and immobile, while being sufficiently electropositive that the partitioned tar control composite exhibits a zeta potential of at least about +30 mV, and preferably from about +60 mV to about +80 mV, and the amount of compound added to the composition is effective to finely disperse the tar to be removed in the form of finely dispersed and tar-containing aggregates in a sheet of paper produced from said composition. Further improvements in tar control can be achieved by using these partitioned tar control composites together with alum and/or relatively high molecular weight alkylene oxide polymers and other desirable results, including improved fiber retention, can also be obtained in the practice of the invention. , better drainage and lower waste treatment costs. oh
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14149588A | 1988-01-07 | 1988-01-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
GR1000332B true GR1000332B (en) | 1992-06-25 |
Family
ID=22495937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GR890100006A GR1000332B (en) | 1988-01-07 | 1989-01-05 | Resins control systems |
Country Status (3)
Country | Link |
---|---|
GR (1) | GR1000332B (en) |
PT (1) | PT89397B (en) |
ZA (1) | ZA8938B (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3801433A (en) * | 1970-10-14 | 1974-04-02 | English Clays Lovering Pochin | Method of controlling pitch in paper using amine coated clays |
FR2396831A1 (en) * | 1977-07-04 | 1979-02-02 | Scholten Honig Research Nv | Paper and cardboard prodn. using filler - coated with quat. cationic starch-ether, giving improved pulp filler retention |
EP0026091A1 (en) * | 1979-09-25 | 1981-04-01 | Mobil Oil Corporation | Method for manufacture of sized paper |
EP0058622A1 (en) * | 1981-02-17 | 1982-08-25 | Calgon Corporation | Reducing the deposition of pitch-like resins in the production of paper |
EP0235893A1 (en) * | 1986-01-29 | 1987-09-09 | Ciba Specialty Chemicals Water Treatments Limited | Production of paper and paperboard |
-
1989
- 1989-01-04 ZA ZA8938A patent/ZA8938B/en unknown
- 1989-01-05 GR GR890100006A patent/GR1000332B/en unknown
- 1989-01-06 PT PT8939789A patent/PT89397B/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3801433A (en) * | 1970-10-14 | 1974-04-02 | English Clays Lovering Pochin | Method of controlling pitch in paper using amine coated clays |
FR2396831A1 (en) * | 1977-07-04 | 1979-02-02 | Scholten Honig Research Nv | Paper and cardboard prodn. using filler - coated with quat. cationic starch-ether, giving improved pulp filler retention |
EP0026091A1 (en) * | 1979-09-25 | 1981-04-01 | Mobil Oil Corporation | Method for manufacture of sized paper |
EP0058622A1 (en) * | 1981-02-17 | 1982-08-25 | Calgon Corporation | Reducing the deposition of pitch-like resins in the production of paper |
EP0235893A1 (en) * | 1986-01-29 | 1987-09-09 | Ciba Specialty Chemicals Water Treatments Limited | Production of paper and paperboard |
Non-Patent Citations (3)
Title |
---|
"THE ROLE OF SPECIAL POLYELECTROLYTES FOR THE SOLUTION OF OPERATING IN PAPER AND BOARD PRODUCTION" (LOUCHE et al.) 07 November 1985, pages 1-27 * |
CLAIMS SEARCHED: ALL * |
TAPPI JOURNAL, vol. 69, no. 9, September 1986, pages 134-135, Norcross, Giorgia, US; T. FUKUI et al.: "The use of a rotating felt to study the behavior of organic colloids un papermaking stock" * |
Also Published As
Publication number | Publication date |
---|---|
PT89397B (en) | 1993-09-30 |
PT89397A (en) | 1990-02-08 |
ZA8938B (en) | 1989-10-25 |
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