NO860558L - PROCEDURE FOR PAPER MAKING. - Google Patents
PROCEDURE FOR PAPER MAKING.Info
- Publication number
- NO860558L NO860558L NO860558A NO860558A NO860558L NO 860558 L NO860558 L NO 860558L NO 860558 A NO860558 A NO 860558A NO 860558 A NO860558 A NO 860558A NO 860558 L NO860558 L NO 860558L
- Authority
- NO
- Norway
- Prior art keywords
- sulphite
- procedure
- paper making
- paper
- production
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 abstract 3
- 229940037003 alum Drugs 0.000 abstract 2
- 125000002091 cationic group Chemical group 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 230000014759 maintenance of location Effects 0.000 abstract 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 abstract 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 150000001299 aldehydes Chemical class 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 abstract 1
- 239000004289 sodium hydrogen sulphite Substances 0.000 abstract 1
- 235000010265 sodium sulphite Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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.
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 (3)
| Publication Number | Publication Date |
|---|---|
| NO860558L true NO860558L (en) | 1986-08-18 |
| NO168843B NO168843B (en) | 1991-12-30 |
| NO168843C NO168843C (en) | 1992-04-08 |
Family
ID=20359131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
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 AT AT86850039T patent/ATE57965T1/en not_active IP Right Cessation
- 1986-02-07 EP EP86850039A patent/EP0192623B1/en not_active Expired - Lifetime
- 1986-02-12 FI FI860650A patent/FI84635C/en not_active IP Right Cessation
- 1986-02-14 ES ES552021A patent/ES8801401A1/en not_active Expired
- 1986-02-14 NO NO860558A patent/NO168843C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE8500715L (en) | 1986-08-16 |
| ES8801401A1 (en) | 1987-12-16 |
| NO168843B (en) | 1991-12-30 |
| EP0192623B1 (en) | 1990-10-31 |
| DE3675231D1 (en) | 1990-12-06 |
| FI860650A0 (en) | 1986-02-12 |
| EP0192623A1 (en) | 1986-08-27 |
| FI84635B (en) | 1991-09-13 |
| ATE57965T1 (en) | 1990-11-15 |
| ES552021A0 (en) | 1987-12-16 |
| FI860650L (en) | 1986-08-16 |
| NO168843C (en) | 1992-04-08 |
| FI84635C (en) | 1993-07-28 |
| SE8500715D0 (en) | 1985-02-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM1K | Lapsed by not paying the annual fees |
Free format text: LAPSED IN AUGUST 2002 |