FI860650A - SAETT VID PAPPERSFRAMSTAELLNING. - Google Patents
SAETT VID PAPPERSFRAMSTAELLNING. Download PDFInfo
- Publication number
- FI860650A FI860650A FI860650A FI860650A FI860650A FI 860650 A FI860650 A FI 860650A FI 860650 A FI860650 A FI 860650A FI 860650 A FI860650 A FI 860650A FI 860650 A FI860650 A FI 860650A
- Authority
- FI
- Finland
- Prior art keywords
- sulphite
- pappersframstaellning
- paper
- production
- combination
- Prior art date
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
- D21H17/66—Salts, e.g. alums
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Luminescent Compositions (AREA)
- Steroid Compounds (AREA)
- Golf Clubs (AREA)
- Toys (AREA)
- Making Paper Articles (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Sulphite, and preferably sodium sulphite and sodium bisulphite, is used as absorbing agent for aldehydes at the production of paper. The sulphite is added to the stock or the process water in combination with a cationic retention agent, such as eg alum. A product suitable for use at the production of paper is an aqueous solution of a combination of sulphite and a cationic retention agent, preferably alum.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8500715 | 1985-02-15 | ||
SE8500715A SE8500715L (en) | 1985-02-15 | 1985-02-15 | SET FOR PAPER MAKING |
Publications (4)
Publication Number | Publication Date |
---|---|
FI860650A0 FI860650A0 (en) | 1986-02-12 |
FI860650A true FI860650A (en) | 1986-08-16 |
FI84635B FI84635B (en) | 1991-09-13 |
FI84635C FI84635C (en) | 1993-07-28 |
Family
ID=20359131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI860650A FI84635C (en) | 1985-02-15 | 1986-02-12 | SAETT VID PAPPERSFRAMSTAELLNING |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0192623B1 (en) |
AT (1) | ATE57965T1 (en) |
DE (1) | DE3675231D1 (en) |
ES (1) | ES8801401A1 (en) |
FI (1) | FI84635C (en) |
NO (1) | NO168843C (en) |
SE (1) | SE8500715L (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5326479A (en) * | 1993-09-01 | 1994-07-05 | Nalco Chemical Company | Treatment of pulp and paper wastewater with reducing agent and a polymer for color removal |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT947732B (en) * | 1971-02-27 | 1973-05-30 | Asahi Chemical Ind | PROCESS FOR THE TREATMENT OF ALDEHYDES |
FR2306944A1 (en) * | 1975-04-09 | 1976-11-05 | Speichim | Formaldehyde and phenol removal from waste waters - by treating with formaldehyde blocking agent, evaporating and incinerating concentrate |
US4409375A (en) * | 1982-02-11 | 1983-10-11 | Champion International Corporation | Method for scavenging aldehydes |
DE3222195A1 (en) * | 1982-06-12 | 1983-12-15 | Basf Ag, 6700 Ludwigshafen | METHOD FOR THE PRODUCTION OF CHIPWOOD MATERIALS WITH REDUCED FORMALDEHYDEMISSION |
-
1985
- 1985-02-15 SE SE8500715A patent/SE8500715L/en not_active Application Discontinuation
-
1986
- 1986-02-07 DE DE8686850039T patent/DE3675231D1/en not_active Expired - Fee Related
- 1986-02-07 EP EP86850039A patent/EP0192623B1/en not_active Expired - Lifetime
- 1986-02-07 AT AT86850039T patent/ATE57965T1/en not_active IP Right Cessation
- 1986-02-12 FI FI860650A patent/FI84635C/en not_active IP Right Cessation
- 1986-02-14 NO NO860558A patent/NO168843C/en not_active IP Right Cessation
- 1986-02-14 ES ES552021A patent/ES8801401A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0192623B1 (en) | 1990-10-31 |
FI84635C (en) | 1993-07-28 |
NO168843C (en) | 1992-04-08 |
FI860650A0 (en) | 1986-02-12 |
ES552021A0 (en) | 1987-12-16 |
NO860558L (en) | 1986-08-18 |
DE3675231D1 (en) | 1990-12-06 |
NO168843B (en) | 1991-12-30 |
SE8500715L (en) | 1986-08-16 |
ATE57965T1 (en) | 1990-11-15 |
FI84635B (en) | 1991-09-13 |
EP0192623A1 (en) | 1986-08-27 |
ES8801401A1 (en) | 1987-12-16 |
SE8500715D0 (en) | 1985-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed |
Owner name: EKA NOBEL AB |