GB2052511A - Process for Dissolving Cellulose in Organic Solvents Containing Reduced Amount of Formaldehyde - Google Patents
Process for Dissolving Cellulose in Organic Solvents Containing Reduced Amount of Formaldehyde Download PDFInfo
- Publication number
- GB2052511A GB2052511A GB8017819A GB8017819A GB2052511A GB 2052511 A GB2052511 A GB 2052511A GB 8017819 A GB8017819 A GB 8017819A GB 8017819 A GB8017819 A GB 8017819A GB 2052511 A GB2052511 A GB 2052511A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- process according
- units
- formaldehyde
- solvent
- 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.)
- Withdrawn
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000003960 organic solvent Substances 0.000 title claims abstract description 7
- 229920000875 Dissolving pulp Polymers 0.000 title description 2
- 229920002678 cellulose Polymers 0.000 claims abstract description 40
- 239000001913 cellulose Substances 0.000 claims abstract description 40
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims abstract description 18
- 235000019256 formaldehyde Nutrition 0.000 claims abstract description 15
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229930040373 Paraformaldehyde Natural products 0.000 claims abstract description 11
- 229920002866 paraformaldehyde Polymers 0.000 claims abstract description 11
- 238000004090 dissolution Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004627 regenerated cellulose Substances 0.000 claims abstract description 3
- 238000002360 preparation method Methods 0.000 claims abstract 3
- 239000002904 solvent Substances 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 230000008929 regeneration Effects 0.000 claims description 2
- 238000011069 regeneration method Methods 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 abstract description 2
- 230000001172 regenerating effect Effects 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
- C08B1/003—Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids
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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Artificial Filaments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT7923349A IT7923349A0 (it) | 1979-06-07 | 1979-06-07 | Procedimento per la dissoluzione della cellulosa in solventi organici contenenti ridotte quantita' di formaldeide. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2052511A true GB2052511A (en) | 1981-01-28 |
Family
ID=11206310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8017819A Withdrawn GB2052511A (en) | 1979-06-07 | 1980-05-30 | Process for Dissolving Cellulose in Organic Solvents Containing Reduced Amount of Formaldehyde |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5649701A (fr) |
| DE (1) | DE3021145A1 (fr) |
| FR (1) | FR2458557A1 (fr) |
| GB (1) | GB2052511A (fr) |
| IT (1) | IT7923349A0 (fr) |
-
1979
- 1979-06-07 IT IT7923349A patent/IT7923349A0/it unknown
-
1980
- 1980-05-30 GB GB8017819A patent/GB2052511A/en not_active Withdrawn
- 1980-06-04 DE DE19803021145 patent/DE3021145A1/de not_active Withdrawn
- 1980-06-06 JP JP7654680A patent/JPS5649701A/ja active Pending
- 1980-06-06 FR FR8012674A patent/FR2458557A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2458557A1 (fr) | 1981-01-02 |
| IT7923349A0 (it) | 1979-06-07 |
| DE3021145A1 (de) | 1980-12-18 |
| JPS5649701A (en) | 1981-05-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |