FI70440C - Foerfarande foer framstaellning av kemikaliska pappersmassor - Google Patents
Foerfarande foer framstaellning av kemikaliska pappersmassor Download PDFInfo
- Publication number
- FI70440C FI70440C FI782342A FI782342A FI70440C FI 70440 C FI70440 C FI 70440C FI 782342 A FI782342 A FI 782342A FI 782342 A FI782342 A FI 782342A FI 70440 C FI70440 C FI 70440C
- Authority
- FI
- Finland
- Prior art keywords
- weight
- cooking
- peroxide
- stage
- sodium hydroxide
- Prior art date
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
Landscapes
- Paper (AREA)
- Materials For Medical Uses (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7724131 | 1977-07-29 | ||
FR7724131A FR2398839A1 (fr) | 1977-07-29 | 1977-07-29 | Procede de fabrication de pates papetieres chimiques |
FR7820715A FR2430475A2 (fr) | 1978-07-05 | 1978-07-05 | Procede de fabrication de pates papetieres chimiques |
FR7820715 | 1978-07-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI782342A FI782342A (fi) | 1979-01-30 |
FI70440B FI70440B (fi) | 1986-03-27 |
FI70440C true FI70440C (fi) | 1986-09-19 |
Family
ID=26220161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI782342A FI70440C (fi) | 1977-07-29 | 1978-07-27 | Foerfarande foer framstaellning av kemikaliska pappersmassor |
Country Status (10)
Country | Link |
---|---|
AT (1) | AT371860B (fr) |
BE (1) | BE869153A (fr) |
CA (1) | CA1128260A (fr) |
CH (1) | CH634362A5 (fr) |
DE (1) | DE2833115C3 (fr) |
ES (1) | ES472184A1 (fr) |
FI (1) | FI70440C (fr) |
IT (1) | IT1160561B (fr) |
NO (1) | NO151975C (fr) |
SE (1) | SE439172B (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2493365A1 (fr) * | 1980-11-06 | 1982-05-07 | Tech Ind Papiers Carton Centre | Procede pour la fabrication de pate papetiere chimique et pate ainsi obtenue |
IT202000019033A1 (it) * | 2020-08-03 | 2022-02-03 | Davide Bertinazzo | Metodo per ottenere un precursore di un materiale ibrido legno-inorganico e metodo per ottenere un materiale ibrido legno-inorganico |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA895756A (en) * | 1970-04-03 | 1972-03-21 | Macmillan Bloedel Limited | Two-stage soda-oxygen pulping |
DE2327900C3 (de) * | 1973-06-01 | 1985-02-07 | Degussa Ag, 6000 Frankfurt | Bleichaufschluß von Zellstoff mit erheblich reduziertem Chloreinsatz |
CA1073161A (fr) * | 1975-09-05 | 1980-03-11 | Canadian Industries Limited | Procede de delignification |
-
1978
- 1978-07-20 BE BE189399A patent/BE869153A/fr not_active IP Right Cessation
- 1978-07-26 NO NO78782573A patent/NO151975C/no unknown
- 1978-07-27 SE SE7808202A patent/SE439172B/sv not_active IP Right Cessation
- 1978-07-27 FI FI782342A patent/FI70440C/fi not_active IP Right Cessation
- 1978-07-27 AT AT0546578A patent/AT371860B/de not_active IP Right Cessation
- 1978-07-27 CA CA308,295A patent/CA1128260A/fr not_active Expired
- 1978-07-28 ES ES472184A patent/ES472184A1/es not_active Expired
- 1978-07-28 IT IT68812/78A patent/IT1160561B/it active
- 1978-07-28 CH CH815678A patent/CH634362A5/fr not_active IP Right Cessation
- 1978-07-28 DE DE2833115A patent/DE2833115C3/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES472184A1 (es) | 1979-02-16 |
BE869153A (fr) | 1979-01-22 |
DE2833115A1 (de) | 1979-02-08 |
DE2833115B2 (de) | 1980-07-03 |
FI70440B (fi) | 1986-03-27 |
CA1128260A (fr) | 1982-07-27 |
CH634362A5 (en) | 1983-01-31 |
AT371860B (de) | 1983-08-10 |
SE7808202L (sv) | 1979-01-30 |
IT1160561B (it) | 1987-03-11 |
SE439172B (sv) | 1985-06-03 |
ATA546578A (de) | 1982-12-15 |
DE2833115C3 (de) | 1986-04-17 |
FI782342A (fi) | 1979-01-30 |
NO151975B (no) | 1985-04-01 |
NO151975C (no) | 1985-07-10 |
IT7868812A0 (it) | 1978-07-28 |
NO782573L (no) | 1979-01-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: PRODUITS CHIMIQUES UGINE KUHLMANN |