SE8500715D0 - SET FOR PAPER MAKING - Google Patents
SET FOR PAPER MAKINGInfo
- Publication number
- SE8500715D0 SE8500715D0 SE8500715A SE8500715A SE8500715D0 SE 8500715 D0 SE8500715 D0 SE 8500715D0 SE 8500715 A SE8500715 A SE 8500715A SE 8500715 A SE8500715 A SE 8500715A SE 8500715 D0 SE8500715 D0 SE 8500715D0
- Authority
- SE
- Sweden
- Prior art keywords
- sulphite
- paper making
- 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)
- Golf Clubs (AREA)
- Toys (AREA)
- Steroid Compounds (AREA)
- Luminescent Compositions (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Making Paper Articles (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.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8500715A SE8500715L (en) | 1985-02-15 | 1985-02-15 | SET FOR PAPER MAKING |
AT86850039T ATE57965T1 (en) | 1985-02-15 | 1986-02-07 | PROCESS OF PAPER MAKING. |
DE8686850039T DE3675231D1 (en) | 1985-02-15 | 1986-02-07 | METHOD FOR PRODUCING PAPER. |
EP86850039A EP0192623B1 (en) | 1985-02-15 | 1986-02-07 | A method at the production of paper |
FI860650A FI84635C (en) | 1985-02-15 | 1986-02-12 | SAETT VID PAPPERSFRAMSTAELLNING |
ES552021A ES8801401A1 (en) | 1985-02-15 | 1986-02-14 | A method at the production of paper. |
NO860558A NO168843C (en) | 1985-02-15 | 1986-02-14 | PROCEDURE FOR AA REDUCE THE QUANTITY OF FREE PREPARED HEADWORK MANUFACTURING PAPER, AND Means FOR USING THE PROCEDURE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8500715A SE8500715L (en) | 1985-02-15 | 1985-02-15 | SET FOR PAPER MAKING |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8500715D0 true SE8500715D0 (en) | 1985-02-15 |
SE8500715L SE8500715L (en) | 1986-08-16 |
Family
ID=20359131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8500715A SE8500715L (en) | 1985-02-15 | 1985-02-15 | SET FOR PAPER MAKING |
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 EP EP86850039A patent/EP0192623B1/en not_active Expired - Lifetime
- 1986-02-07 DE DE8686850039T patent/DE3675231D1/en not_active Expired - Fee Related
- 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 |
---|---|
ATE57965T1 (en) | 1990-11-15 |
FI860650A (en) | 1986-08-16 |
FI84635C (en) | 1993-07-28 |
ES8801401A1 (en) | 1987-12-16 |
EP0192623B1 (en) | 1990-10-31 |
FI84635B (en) | 1991-09-13 |
SE8500715L (en) | 1986-08-16 |
FI860650A0 (en) | 1986-02-12 |
EP0192623A1 (en) | 1986-08-27 |
NO860558L (en) | 1986-08-18 |
DE3675231D1 (en) | 1990-12-06 |
NO168843B (en) | 1991-12-30 |
ES552021A0 (en) | 1987-12-16 |
NO168843C (en) | 1992-04-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8500715-1 Effective date: 19920217 |