SE375565B - - Google Patents
Info
- Publication number
- SE375565B SE375565B SE7106636A SE663671A SE375565B SE 375565 B SE375565 B SE 375565B SE 7106636 A SE7106636 A SE 7106636A SE 663671 A SE663671 A SE 663671A SE 375565 B SE375565 B SE 375565B
- Authority
- SE
- Sweden
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
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4040470A | 1970-05-25 | 1970-05-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE375565B true SE375565B (sv) | 1975-04-21 |
| SE375565C SE375565C (sv) | 1984-07-16 |
Family
ID=21910799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7106636A SE375565C (sv) | 1970-05-25 | 1971-05-24 | Sett att bleka kemisk massa med syre i ett forsta steg och perettiksyra i ett andra steg |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3695995A (sv) |
| JP (1) | JPS5510714B1 (sv) |
| CA (1) | CA939855A (sv) |
| DE (1) | DE2124325C3 (sv) |
| FI (1) | FI59432C (sv) |
| FR (1) | FR2095038A5 (sv) |
| SE (1) | SE375565C (sv) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT378016B (de) * | 1982-12-02 | 1985-06-10 | Ver Edelstahlwerke Ag | Verfahren zum entfaerben und/oder bleichen von zellulosematerial, insbesondere zellstoff, und vorrichtung zur durchfuehrung des verfahrens |
| US20080087390A1 (en) * | 2006-10-11 | 2008-04-17 | Fort James Corporation | Multi-step pulp bleaching |
| US8845860B2 (en) | 2010-09-16 | 2014-09-30 | Georgia-Pacific Consumer Products Lp | High brightness pulps from lignin rich waste papers |
-
1970
- 1970-05-25 US US40404A patent/US3695995A/en not_active Expired - Lifetime
- 1970-12-11 CA CA100,406A patent/CA939855A/en not_active Expired
-
1971
- 1971-05-12 JP JP3187971A patent/JPS5510714B1/ja active Pending
- 1971-05-17 DE DE2124325A patent/DE2124325C3/de not_active Expired
- 1971-05-21 FI FI1406/71A patent/FI59432C/fi active
- 1971-05-24 SE SE7106636A patent/SE375565C/sv unknown
- 1971-05-25 FR FR7118899A patent/FR2095038A5/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FI59432B (fi) | 1981-04-30 |
| FI59432C (fi) | 1981-08-10 |
| DE2124325C3 (de) | 1980-06-19 |
| US3695995A (en) | 1972-10-03 |
| DE2124325B2 (de) | 1979-09-27 |
| JPS5510714B1 (sv) | 1980-03-18 |
| DE2124325A1 (de) | 1971-12-09 |
| FR2095038A5 (sv) | 1972-02-04 |
| CA939855A (en) | 1974-01-15 |
| SE375565C (sv) | 1984-07-16 |