DE3009473C3 - - Google Patents
Info
- Publication number
- DE3009473C3 DE3009473C3 DE3009473A DE3009473A DE3009473C3 DE 3009473 C3 DE3009473 C3 DE 3009473C3 DE 3009473 A DE3009473 A DE 3009473A DE 3009473 A DE3009473 A DE 3009473A DE 3009473 C3 DE3009473 C3 DE 3009473C3
- Authority
- DE
- Germany
- 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.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
- D21C9/1089—Bleaching ; Apparatus therefor with reducing compounds with dithionites
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/30—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using reducing agents
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2918679A JPS55121905A (en) | 1979-03-13 | 1979-03-13 | Sodium hydrosulfite composition |
Publications (3)
Publication Number | Publication Date |
---|---|
DE3009473A1 DE3009473A1 (de) | 1980-09-18 |
DE3009473B2 DE3009473B2 (de) | 1981-07-16 |
DE3009473C3 true DE3009473C3 (US20110009641A1-20110113-C00185.png) | 1987-07-30 |
Family
ID=12269166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3009473A Granted DE3009473B2 (de) | 1979-03-13 | 1980-03-12 | Natriumhydrosulfitzusammensetzung |
Country Status (6)
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4534954A (en) * | 1982-08-17 | 1985-08-13 | Virginia Chemicals Inc. | Sodium hydrosulfite slurries |
US4590058A (en) * | 1985-02-21 | 1986-05-20 | Olin Corporation | Process for producing high purity solutions of alkali metal hydrosulfites |
US5458737A (en) * | 1993-07-27 | 1995-10-17 | Hoechst Celanese Corporation | Quaternary compounds as brightness enhancers |
US6120554A (en) * | 1998-02-02 | 2000-09-19 | American Renewable Resources Llc | Catalyzed alkaline hydrogen peroxide bleaching of dye-containing cellulose textiles |
US20030056296A1 (en) * | 2001-09-26 | 2003-03-27 | Hirsch Gary F. | Dye removal from denim scrap with a forced circulation kier |
EP1621521B1 (de) * | 2004-07-27 | 2012-06-06 | Carela GmbH | Verfahren zur Entfernung von Belägen aus Wasserversorgungseinrichtungen und seine Verwendung |
WO2008129048A1 (de) * | 2007-04-24 | 2008-10-30 | Basf Se | Verfahren zur herstellung von gebleichten holzpartikeln und hellen bis weissen holzwerkstoffen |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1546239A1 (de) * | 1966-12-31 | 1969-11-27 | Basf Ag | Verfahren zum Bleichen |
US3666409A (en) * | 1969-01-31 | 1972-05-30 | Mitsubishi Edogawa Kagaku Kk | Method of stabilizing sodium hydrosulfite |
GB1331637A (en) * | 1969-10-29 | 1973-09-26 | Sumitomo Chemical Co | Method for producing dried nonhydrated sodium dithionite |
US3669895A (en) * | 1970-08-31 | 1972-06-13 | Virginia Chemicals Inc | Sodium hydrosulfite stabilization composition |
-
1979
- 1979-03-13 JP JP2918679A patent/JPS55121905A/ja active Granted
-
1980
- 1980-03-05 GB GB8007450A patent/GB2045302B/en not_active Expired
- 1980-03-07 US US06/128,098 patent/US4357256A/en not_active Expired - Lifetime
- 1980-03-07 IN IN273/CAL/80A patent/IN151406B/en unknown
- 1980-03-12 IT IT67384/80A patent/IT1129807B/it active
- 1980-03-12 DE DE3009473A patent/DE3009473B2/de active Granted
Also Published As
Publication number | Publication date |
---|---|
DE3009473A1 (de) | 1980-09-18 |
GB2045302A (en) | 1980-10-29 |
IT8067384A0 (it) | 1980-03-12 |
JPS6220123B2 (US20110009641A1-20110113-C00185.png) | 1987-05-06 |
IT1129807B (it) | 1986-06-11 |
DE3009473B2 (de) | 1981-07-16 |
US4357256A (en) | 1982-11-02 |
US4357256B1 (US20110009641A1-20110113-C00185.png) | 1985-04-02 |
GB2045302B (en) | 1983-02-02 |
JPS55121905A (en) | 1980-09-19 |
IN151406B (US20110009641A1-20110113-C00185.png) | 1983-04-16 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAP | Request for examination filed | ||
OD | Request for examination | ||
8263 | Opposition against grant of a patent | ||
8281 | Inventor (new situation) |
Free format text: YAMAGUCHI, TAKAAKI, TOKIO/TOKYO, JP |
|
C3 | Grant after two publication steps (3rd publication) | ||
8339 | Ceased/non-payment of the annual fee |