CA936310A - Two stage process for the production of chemical pulps - Google Patents
Two stage process for the production of chemical pulpsInfo
- Publication number
- CA936310A CA936310A CA110383A CA110383A CA936310A CA 936310 A CA936310 A CA 936310A CA 110383 A CA110383 A CA 110383A CA 110383 A CA110383 A CA 110383A CA 936310 A CA936310 A CA 936310A
- Authority
- CA
- Canada
- Prior art keywords
- production
- stage process
- chemical pulps
- pulps
- chemical
- 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
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
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
- D21C3/263—Multistage processes at least one stage being in presence of oxygen
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00133395A US3773611A (en) | 1971-04-12 | 1971-04-12 | Two-stage sodium sulfite-oxygen pulping |
CA110383A CA936310A (en) | 1971-04-12 | 1971-04-15 | Two stage process for the production of chemical pulps |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13339571A | 1971-04-12 | 1971-04-12 | |
CA110383A CA936310A (en) | 1971-04-12 | 1971-04-15 | Two stage process for the production of chemical pulps |
Publications (1)
Publication Number | Publication Date |
---|---|
CA936310A true CA936310A (en) | 1973-11-06 |
Family
ID=25666772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA110383A Expired CA936310A (en) | 1971-04-12 | 1971-04-15 | Two stage process for the production of chemical pulps |
Country Status (2)
Country | Link |
---|---|
US (1) | US3773611A (en) |
CA (1) | CA936310A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4552616A (en) * | 1982-10-20 | 1985-11-12 | New Fibers International Inc. | Pulping process pretreatment using a lower alkanolamine in the presence of ammonium hydroxide |
US5464563A (en) * | 1993-08-25 | 1995-11-07 | Burlington Chemical Co., Inc. | Bleaching composition |
CN101736427B (en) * | 2009-12-22 | 2011-08-03 | 唐山三友集团东光浆粕有限责任公司 | Bamboo alpha-pulp for viscose and production method thereof |
BR112012031400B1 (en) | 2010-06-10 | 2020-11-17 | Packaging Corporation Of America | pulp manufacturing method for corrugated medium |
CN104407098B (en) * | 2014-09-23 | 2016-04-20 | 黄伟洪 | A kind of method of Fast Evaluation birch soda anthraquinone process technique |
-
1971
- 1971-04-12 US US00133395A patent/US3773611A/en not_active Expired - Lifetime
- 1971-04-15 CA CA110383A patent/CA936310A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3773611A (en) | 1973-11-20 |
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