ES552021A0 - Un metodo para reducir la cantidad de aldehido libre en la produccion de papel - Google Patents
Un metodo para reducir la cantidad de aldehido libre en la produccion de papelInfo
- Publication number
- ES552021A0 ES552021A0 ES552021A ES552021A ES552021A0 ES 552021 A0 ES552021 A0 ES 552021A0 ES 552021 A ES552021 A ES 552021A ES 552021 A ES552021 A ES 552021A ES 552021 A0 ES552021 A0 ES 552021A0
- Authority
- ES
- Spain
- Prior art keywords
- reduce
- amount
- sulphite
- paper production
- free aldehyde
- 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.)
- Granted
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)
- Luminescent Compositions (AREA)
- Steroid Compounds (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Making Paper Articles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8500715A SE8500715L (sv) | 1985-02-15 | 1985-02-15 | Sett vid pappersframstellning |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8801401A1 ES8801401A1 (es) | 1987-12-16 |
ES552021A0 true ES552021A0 (es) | 1987-12-16 |
Family
ID=20359131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES552021A Expired ES8801401A1 (es) | 1985-02-15 | 1986-02-14 | Un metodo para reducir la cantidad de aldehido libre en la produccion de papel |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0192623B1 (es) |
AT (1) | ATE57965T1 (es) |
DE (1) | DE3675231D1 (es) |
ES (1) | ES8801401A1 (es) |
FI (1) | FI84635C (es) |
NO (1) | NO168843C (es) |
SE (1) | SE8500715L (es) |
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 (it) * | 1971-02-27 | 1973-05-30 | Asahi Chemical Ind | Processo per il trattamento delle aldeidi |
FR2306944A1 (fr) * | 1975-04-09 | 1976-11-05 | Speichim | Procede de traitement d'eaux residuaires formophenoliques |
US4409375A (en) * | 1982-02-11 | 1983-10-11 | Champion International Corporation | Method for scavenging aldehydes |
DE3222195A1 (de) * | 1982-06-12 | 1983-12-15 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von spanholzwerkstoffen mit verringerter formaldehydemission |
-
1985
- 1985-02-15 SE SE8500715A patent/SE8500715L/ not_active Application Discontinuation
-
1986
- 1986-02-07 EP EP86850039A patent/EP0192623B1/en not_active Expired - Lifetime
- 1986-02-07 DE DE8686850039T patent/DE3675231D1/de not_active Expired - Fee Related
- 1986-02-07 AT AT86850039T patent/ATE57965T1/de not_active IP Right Cessation
- 1986-02-12 FI FI860650A patent/FI84635C/fi not_active IP Right Cessation
- 1986-02-14 ES ES552021A patent/ES8801401A1/es not_active Expired
- 1986-02-14 NO NO860558A patent/NO168843C/no not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0192623A1 (en) | 1986-08-27 |
FI860650A0 (fi) | 1986-02-12 |
ES8801401A1 (es) | 1987-12-16 |
FI860650A (fi) | 1986-08-16 |
NO168843C (no) | 1992-04-08 |
SE8500715L (sv) | 1986-08-16 |
FI84635C (fi) | 1993-07-28 |
EP0192623B1 (en) | 1990-10-31 |
ATE57965T1 (de) | 1990-11-15 |
NO860558L (no) | 1986-08-18 |
NO168843B (no) | 1991-12-30 |
DE3675231D1 (de) | 1990-12-06 |
FI84635B (fi) | 1991-09-13 |
SE8500715D0 (sv) | 1985-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PC1A | Transfer granted |