AT253346B - Process for the production of pulp from mixtures of softwood and hardwood - Google Patents
Process for the production of pulp from mixtures of softwood and hardwoodInfo
- Publication number
- AT253346B AT253346B AT9363A AT9363A AT253346B AT 253346 B AT253346 B AT 253346B AT 9363 A AT9363 A AT 9363A AT 9363 A AT9363 A AT 9363A AT 253346 B AT253346 B AT 253346B
- Authority
- AT
- Austria
- Prior art keywords
- softwood
- hardwood
- pulp
- mixtures
- production
- Prior art date
Links
- 239000011121 hardwood Substances 0.000 title 1
- 239000000203 mixture Substances 0.000 title 1
- 239000011122 softwood Substances 0.000 title 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
- D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
- D21C3/10—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites magnesium bisulfite
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1962A0039238 DE1517142A1 (en) | 1962-01-18 | 1962-01-18 | Process for the production of pulp from mixtures of softwood, preferably pine and spruce, and hardwood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT253346B true AT253346B (en) | 1967-04-10 |
Family
ID=6931262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT9363A AT253346B (en) | 1962-01-18 | 1963-01-04 | Process for the production of pulp from mixtures of softwood and hardwood |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT253346B (en) |
| CH (1) | CH424454A (en) |
| FI (1) | FI43031C (en) |
| FR (1) | FR1345310A (en) |
| NO (1) | NO121699B (en) |
| SE (1) | SE219883C1 (en) |
-
1962
- 1962-12-20 FR FR20000A patent/FR1345310A/en not_active Expired
- 1962-12-27 CH CH1522862A patent/CH424454A/en unknown
-
1963
- 1963-01-04 AT AT9363A patent/AT253346B/en active
- 1963-01-08 FI FI630028A patent/FI43031C/en active
- 1963-01-10 NO NO147081A patent/NO121699B/no unknown
- 1963-01-16 SE SE045663A patent/SE219883C1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1345310A (en) | 1963-12-06 |
| NO121699B (en) | 1971-03-29 |
| SE219883C1 (en) | 1968-04-02 |
| FI43031B (en) | 1970-09-02 |
| CH424454A (en) | 1966-11-15 |
| FI43031C (en) | 1970-12-10 |
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