DE2967107D1 - Process for depolymerising cellulose fibers and depolymerised cellulosic material with a low crystallinity degree obtainable by this process - Google Patents
Process for depolymerising cellulose fibers and depolymerised cellulosic material with a low crystallinity degree obtainable by this processInfo
- Publication number
- DE2967107D1 DE2967107D1 DE7979901285T DE2967107T DE2967107D1 DE 2967107 D1 DE2967107 D1 DE 2967107D1 DE 7979901285 T DE7979901285 T DE 7979901285T DE 2967107 T DE2967107 T DE 2967107T DE 2967107 D1 DE2967107 D1 DE 2967107D1
- Authority
- DE
- Germany
- Prior art keywords
- depolymerising
- depolymerised
- cellulose fibers
- cellulosic material
- low crystallinity
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/02—Oxycellulose; Hydrocellulose; Cellulosehydrate, e.g. microcrystalline cellulose
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1096378 | 1978-10-24 | ||
PCT/CH1979/000138 WO1980000843A1 (en) | 1978-10-24 | 1979-10-23 | Depolymerised cellulosic material with a low cristalline ratio obtained from cellulose fibres and method of preparation |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2967107D1 true DE2967107D1 (en) | 1984-08-16 |
Family
ID=4368640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE7979901285T Expired DE2967107D1 (en) | 1978-10-24 | 1979-10-23 | Process for depolymerising cellulose fibers and depolymerised cellulosic material with a low crystallinity degree obtainable by this process |
Country Status (5)
Country | Link |
---|---|
US (1) | US4357467A (de) |
EP (1) | EP0020469B1 (de) |
DE (1) | DE2967107D1 (de) |
IT (1) | IT1125574B (de) |
WO (1) | WO1980000843A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4474949A (en) * | 1983-05-06 | 1984-10-02 | Personal Products Company | Freeze dried microfibrilar cellulose |
JPS62240302A (ja) * | 1986-04-10 | 1987-10-21 | Asahi Chem Ind Co Ltd | 超低分子量セルロ−スの調製法 |
JPH04348130A (ja) * | 1991-05-24 | 1992-12-03 | Nisshinbo Ind Inc | セルロース微粉末及びその製造方法 |
US5342636A (en) * | 1992-05-05 | 1994-08-30 | Bakshi Amarjit S | Process for modifying a fibrous bulking agent |
US5417984A (en) * | 1992-12-14 | 1995-05-23 | Biocontrol, Inc. | Low crystallinity cellulose excipients |
US6261218B1 (en) * | 1998-12-01 | 2001-07-17 | The Dow Chemical Company | Process and apparatus for making low molecular weight cellulose ethers |
US20040217063A1 (en) * | 2003-05-01 | 2004-11-04 | Yiheng Zhang | Cellodextrin production by mixed acid hydrolysis and chromographic separation |
US7977473B1 (en) | 2004-06-02 | 2011-07-12 | Auburn University | Use of non-crystalline cellulose as a medicine tablet medium |
WO2005118648A2 (en) * | 2004-06-02 | 2005-12-15 | Auburn University | Non-crystalline cellulose and production thereof |
ATE519785T1 (de) * | 2006-06-14 | 2011-08-15 | Dow Global Technologies Llc | Verfahren zur verringerung des mittleren molekulargewichts von celluloseethern |
FR2953217B1 (fr) * | 2009-11-27 | 2012-10-05 | Ifremer | Procede de depolymerisation de polysaccharides par broyage mecanique |
EP4240588A1 (de) * | 2020-11-03 | 2023-09-13 | Refiberd, Inc. | Verfahren zur herstellung von garnen auf basis von regenerierter cellulose und filztücher |
EP4166576A1 (de) * | 2021-10-12 | 2023-04-19 | Katholieke Universiteit Leuven | Kurze amorphe cellulosepolymere |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR471479A (fr) * | 1913-05-24 | 1914-10-29 | Richard Willstaetter | Procédé pour la préparation de solutions de cellulose ou de substances cellulosiques dans l'acide chlorhydrique concentré |
DE482727C (de) | 1925-01-21 | 1929-09-20 | Sidney Anderson Ogden | Verfahren zur Herstellung eines Cellulosederivats |
FR748428A (fr) | 1932-04-05 | 1933-07-04 | Procédé pour la production de solutions de cellulose et pour la production de filsde soie artificielle, de pellicules, de rubans et de produits artificiels analogues obtenus au moyen de ces solutions | |
GB476191A (en) * | 1935-08-13 | 1937-12-03 | Johann Bohunek | Process for the decomposition of cellulosic materials with the aid of hydrogen fluoride to yield products that are of low molecular weight up to the point of solubility in water |
US2305833A (en) * | 1938-06-20 | 1942-12-22 | Warth Carl | Hydrolysis of cellulose |
NL224413A (de) * | 1957-01-28 | |||
US3278519A (en) * | 1960-05-06 | 1966-10-11 | Fmc Corp | Formed products of cellulose crystallite aggregates |
US3345357A (en) * | 1964-02-06 | 1967-10-03 | Fmc Corp | Method of purifying cellulose crystallite aggregates |
US3397198A (en) * | 1964-06-18 | 1968-08-13 | Dahlia S. Greidinger | Degraded cellulose and its manufacture |
BG19462A1 (de) * | 1973-08-02 | 1975-06-25 | ||
US4058411A (en) * | 1976-08-30 | 1977-11-15 | General Electric Company | Decrystallization of cellulose |
-
1979
- 1979-10-23 DE DE7979901285T patent/DE2967107D1/de not_active Expired
- 1979-10-23 IT IT26726/79A patent/IT1125574B/it active
- 1979-10-23 US US06/196,042 patent/US4357467A/en not_active Expired - Lifetime
- 1979-10-23 WO PCT/CH1979/000138 patent/WO1980000843A1/de unknown
-
1980
- 1980-05-07 EP EP79901285A patent/EP0020469B1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT1125574B (it) | 1986-05-14 |
WO1980000843A1 (en) | 1980-05-01 |
IT7926726A0 (it) | 1979-10-23 |
US4357467A (en) | 1982-11-02 |
EP0020469A1 (de) | 1981-01-07 |
EP0020469B1 (de) | 1984-07-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8339 | Ceased/non-payment of the annual fee |