GB1095280A - Bleaching of wood pulps - Google Patents
Bleaching of wood pulpsInfo
- Publication number
- GB1095280A GB1095280A GB7656/66A GB765666A GB1095280A GB 1095280 A GB1095280 A GB 1095280A GB 7656/66 A GB7656/66 A GB 7656/66A GB 765666 A GB765666 A GB 765666A GB 1095280 A GB1095280 A GB 1095280A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulp
- weight
- bleaching
- sodium
- wood
- 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.)
- Expired
Links
- 238000004061 bleaching Methods 0.000 title abstract 3
- 229920001131 Pulp (paper) Polymers 0.000 title abstract 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 abstract 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 3
- 239000007844 bleaching agent Substances 0.000 abstract 3
- 239000002002 slurry Substances 0.000 abstract 3
- 241000219000 Populus Species 0.000 abstract 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 abstract 2
- 238000009895 reductive bleaching Methods 0.000 abstract 2
- 229910052708 sodium Inorganic materials 0.000 abstract 2
- 239000011734 sodium Substances 0.000 abstract 2
- 239000002023 wood Substances 0.000 abstract 2
- RYYXDZDBXNUPOG-UHFFFAOYSA-N 4,5,6,7-tetrahydro-1,3-benzothiazole-2,6-diamine;dihydrochloride Chemical compound Cl.Cl.C1C(N)CCC2=C1SC(N)=N2 RYYXDZDBXNUPOG-UHFFFAOYSA-N 0.000 abstract 1
- 235000007173 Abies balsamea Nutrition 0.000 abstract 1
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract 1
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 abstract 1
- 241000218657 Picea Species 0.000 abstract 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract 1
- 241000018646 Pinus brutia Species 0.000 abstract 1
- 235000011613 Pinus brutia Nutrition 0.000 abstract 1
- 241000183024 Populus tremula Species 0.000 abstract 1
- 239000004902 Softening Agent Substances 0.000 abstract 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 abstract 1
- 241000218685 Tsuga Species 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- -1 bisulphite ion Chemical class 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 229960001484 edetic acid Drugs 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910000027 potassium carbonate Inorganic materials 0.000 abstract 1
- 235000019828 potassium polyphosphate Nutrition 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 abstract 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 abstract 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 abstract 1
- PENRVBJTRIYHOA-UHFFFAOYSA-L zinc dithionite Chemical compound [Zn+2].[O-]S(=O)S([O-])=O PENRVBJTRIYHOA-UHFFFAOYSA-L 0.000 abstract 1
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
- D21C9/1026—Other features in bleaching processes
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
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 |
|---|---|---|---|
| US43462765A | 1965-02-23 | 1965-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1095280A true GB1095280A (en) | 1967-12-13 |
Family
ID=23724985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7656/66A Expired GB1095280A (en) | 1965-02-23 | 1966-02-22 | Bleaching of wood pulps |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3507743A (enrdf_load_stackoverflow) |
| BE (1) | BE676663A (enrdf_load_stackoverflow) |
| DE (1) | DE1546253A1 (enrdf_load_stackoverflow) |
| DK (1) | DK109015C (enrdf_load_stackoverflow) |
| ES (1) | ES322925A1 (enrdf_load_stackoverflow) |
| FI (1) | FI43809B (enrdf_load_stackoverflow) |
| GB (1) | GB1095280A (enrdf_load_stackoverflow) |
| NL (1) | NL6601601A (enrdf_load_stackoverflow) |
| SE (1) | SE314580B (enrdf_load_stackoverflow) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002526A (en) * | 1975-10-10 | 1977-01-11 | International Paper Company | Oxygen-alkali delignification of low consistency wood pulp |
| US4244780A (en) * | 1979-11-15 | 1981-01-13 | Nalco Chemical Company | Use of thiourea dioxide in pulp bleaching processes to preserve pulp strength and aid in brightness |
| US4675076A (en) * | 1986-10-01 | 1987-06-23 | Ppg Industries, Inc. | Method for brightening pulp |
| US5338402A (en) * | 1987-05-25 | 1994-08-16 | Societe Atochem | Process for preparing a bleached chemithermomechanical pulp |
| US5958184A (en) * | 1992-06-10 | 1999-09-28 | Mitsubishi Gas Chemical Company Inc. | Process for producing thiourea dioxide |
| FI105701B (fi) * | 1995-10-20 | 2000-09-29 | Ahlstrom Machinery Oy | Menetelmä ja laitteisto massan käsittelemiseksi |
| US6899790B2 (en) * | 2000-03-06 | 2005-05-31 | Georgia-Pacific Corporation | Method of providing papermaking fibers with durable curl |
| US6627041B2 (en) | 2000-03-06 | 2003-09-30 | Georgia-Pacific Corporation | Method of bleaching and providing papermaking fibers with durable curl |
| US6428653B1 (en) | 2000-12-04 | 2002-08-06 | West Fraser Timber Co. Ltd. | Method of bleaching with formamidine sulfinic acid using a reducing agent to eliminate residual peroxide |
| BRPI0519728B1 (pt) * | 2004-12-21 | 2016-12-13 | Hercules Inc | resinas catiônicas reativas e processo de fabricação de papel |
| WO2025016539A1 (en) * | 2023-07-18 | 2025-01-23 | Basf Se | Process for producing mechanical wood pulp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2071304A (en) * | 1934-12-04 | 1937-02-16 | Great Western Electro Chemical Co | Process of manufacture of products of ground wood pulp |
-
1965
- 1965-02-23 US US434627A patent/US3507743A/en not_active Expired - Lifetime
-
1966
- 1966-02-08 NL NL6601601A patent/NL6601601A/xx unknown
- 1966-02-11 ES ES0322925A patent/ES322925A1/es not_active Expired
- 1966-02-12 FI FI0351/66A patent/FI43809B/fi active
- 1966-02-17 DE DE19661546253 patent/DE1546253A1/de not_active Withdrawn
- 1966-02-17 BE BE676663D patent/BE676663A/xx unknown
- 1966-02-22 DK DK92466AA patent/DK109015C/da active
- 1966-02-22 GB GB7656/66A patent/GB1095280A/en not_active Expired
- 1966-02-23 SE SE2372/66A patent/SE314580B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1546253A1 (de) | 1970-04-30 |
| FI43809B (enrdf_load_stackoverflow) | 1971-03-01 |
| BE676663A (enrdf_load_stackoverflow) | 1966-07-18 |
| SE314580B (enrdf_load_stackoverflow) | 1969-09-08 |
| DK109015C (da) | 1968-03-04 |
| US3507743A (en) | 1970-04-21 |
| ES322925A1 (es) | 1966-11-16 |
| NL6601601A (enrdf_load_stackoverflow) | 1966-08-24 |
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