AU6054486A - Process for the delignification of cellulosic substances - Google Patents
Process for the delignification of cellulosic substancesInfo
- Publication number
- AU6054486A AU6054486A AU60544/86A AU6054486A AU6054486A AU 6054486 A AU6054486 A AU 6054486A AU 60544/86 A AU60544/86 A AU 60544/86A AU 6054486 A AU6054486 A AU 6054486A AU 6054486 A AU6054486 A AU 6054486A
- Authority
- AU
- Australia
- Prior art keywords
- cellulosic materials
- delignification
- cellulosic substances
- treated
- cellulosic
- 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.)
- Granted
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
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Paper (AREA)
- Detergent Compositions (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Materials For Medical Uses (AREA)
- Dental Preparations (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- External Artificial Organs (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Abstract
1. Process for the delignification of cellulosic materials characterized in that in a first step the cellulosic materials are treated with an acid under regulated conditions to effect a decontamination of the cellulosic materials of the metals which they contain, in a second step the cellulosic materials of the first step are treated with hydrogen peroxyde under alcaline conditions and in a third step the cellulosic materials of the second step are boiled in the presence of soda.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US76272685A | 1985-08-05 | 1985-08-05 | |
US762726 | 1985-08-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU6054486A true AU6054486A (en) | 1987-02-12 |
AU591509B2 AU591509B2 (en) | 1989-12-07 |
Family
ID=25065883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU60544/86A Ceased AU591509B2 (en) | 1985-08-05 | 1986-07-25 | Process for the delignification of cellulosic substances |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP0212329B1 (en) |
JP (1) | JPH0742670B2 (en) |
AT (1) | ATE57400T1 (en) |
AU (1) | AU591509B2 (en) |
BR (1) | BR8603672A (en) |
CA (1) | CA1311093C (en) |
DE (1) | DE3674859D1 (en) |
ES (1) | ES2000385A6 (en) |
FI (1) | FI85726C (en) |
NO (1) | NO168490C (en) |
NZ (1) | NZ217002A (en) |
PT (1) | PT83118B (en) |
YU (1) | YU45351B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU591508B2 (en) * | 1985-08-05 | 1989-12-07 | Interox Societe Anonyme | Process for the delignification of cellulosic substances |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1474276A (en) * | 1965-03-19 | 1967-03-24 | Electro Chimie Soc D | Improvements in the manufacture of pulp |
SE373896B (en) * | 1972-07-05 | 1975-02-17 | Mo Och Domsjoe Ab | |
SE380298B (en) * | 1974-03-14 | 1975-11-03 | Mo | PROCEDURE FOR DELIGNIFICATION BY ACID-ALKALI TREATMENT OF LIGNOCELLUOSA-CONTAINING MATERIAL |
SE7612248L (en) * | 1976-11-03 | 1978-05-04 | Mo Och Domsjoe Ab | BOILING OF LIGNOCELLULOSE-MATERIALS |
SU821614A1 (en) * | 1979-06-19 | 1981-04-15 | Белорусский Технологический Институт Им.C.M.Кирова | Method of obtaining pulp-containing semiproduct |
IN167959B (en) * | 1985-08-05 | 1991-01-12 | Interox |
-
1986
- 1986-07-25 AU AU60544/86A patent/AU591509B2/en not_active Ceased
- 1986-07-25 EP EP86110248A patent/EP0212329B1/en not_active Expired - Lifetime
- 1986-07-25 DE DE8686110248T patent/DE3674859D1/en not_active Expired - Fee Related
- 1986-07-25 AT AT86110248T patent/ATE57400T1/en not_active IP Right Cessation
- 1986-07-28 NZ NZ217002A patent/NZ217002A/en unknown
- 1986-07-31 YU YU1369/86A patent/YU45351B/en unknown
- 1986-08-01 CA CA000515193A patent/CA1311093C/en not_active Expired - Lifetime
- 1986-08-01 PT PT83118A patent/PT83118B/en not_active IP Right Cessation
- 1986-08-04 JP JP61183262A patent/JPH0742670B2/en not_active Expired - Lifetime
- 1986-08-04 ES ES8600840A patent/ES2000385A6/en not_active Expired
- 1986-08-04 BR BR8603672A patent/BR8603672A/en not_active IP Right Cessation
- 1986-08-04 NO NO863133A patent/NO168490C/en not_active IP Right Cessation
- 1986-08-05 FI FI863194A patent/FI85726C/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU591508B2 (en) * | 1985-08-05 | 1989-12-07 | Interox Societe Anonyme | Process for the delignification of cellulosic substances |
Also Published As
Publication number | Publication date |
---|---|
JPS6297992A (en) | 1987-05-07 |
NO863133L (en) | 1987-02-06 |
YU136986A (en) | 1987-10-31 |
CA1311093C (en) | 1992-12-08 |
EP0212329A1 (en) | 1987-03-04 |
ES2000385A6 (en) | 1988-02-16 |
FI85726B (en) | 1992-02-14 |
YU45351B (en) | 1992-05-28 |
FI863194A (en) | 1987-02-06 |
DE3674859D1 (en) | 1990-11-15 |
JPH0742670B2 (en) | 1995-05-10 |
PT83118A (en) | 1986-09-01 |
AU591509B2 (en) | 1989-12-07 |
NO168490C (en) | 1992-02-26 |
FI863194A0 (en) | 1986-08-05 |
NO168490B (en) | 1991-11-18 |
EP0212329B1 (en) | 1990-10-10 |
FI85726C (en) | 1992-05-25 |
NO863133D0 (en) | 1986-08-04 |
ATE57400T1 (en) | 1990-10-15 |
PT83118B (en) | 1988-10-14 |
BR8603672A (en) | 1987-03-10 |
NZ217002A (en) | 1988-11-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |