RO92933B - Process for the precipitation of cellulose carbamat - Google Patents
Process for the precipitation of cellulose carbamatInfo
- Publication number
- RO92933B RO92933B RO120224A RO12022485A RO92933B RO 92933 B RO92933 B RO 92933B RO 120224 A RO120224 A RO 120224A RO 12022485 A RO12022485 A RO 12022485A RO 92933 B RO92933 B RO 92933B
- Authority
- RO
- Romania
- Prior art keywords
- cellulose
- precipitation
- solution
- carbamat
- carbamate cellulose
- Prior art date
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
- C08B15/05—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur
- C08B15/06—Derivatives containing elements other than carbon, hydrogen, oxygen, halogens or sulfur containing nitrogen, e.g. carbamates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B3/00—Preparation of cellulose esters of organic acids
- C08B3/14—Preparation of cellulose esters of organic acids in which the organic acid residue contains substituents, e.g. NH2, Cl
Abstract
Inventia de fata se refera la un procedeu pentru precipitarea celulozei carbamat din solutie alcalina. Solutia este contactata cu o solutie continînd sare anorganica, la care celuloza carbamat precipita. Solutia de celuloza carbamat este rasucita într-o solutie continînd una sau cîteva saruri anorganice selectate din grupul constînd din carbonat, bicarbonat, clorura, sulfat, sulfit si bisulfit de sodiu.The present invention relates to a process for the precipitation of carbamate cellulose from an alkaline solution. The solution is contacted with a solution containing an inorganic salt, to which the carbamate cellulose precipitates. The carbamate cellulose solution is twisted into a solution containing one or several inorganic salts selected from the group consisting of carbonate, bicarbonate, chloride, sulfate, sulfite and sodium bisulfite.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI843812A FI69851C (en) | 1984-09-27 | 1984-09-27 | FOERFARANDE FOER UTFAELLNING AV CELLULOSAKARBAMAT |
Publications (2)
Publication Number | Publication Date |
---|---|
RO92933A RO92933A (en) | 1988-03-30 |
RO92933B true RO92933B (en) | 1988-03-31 |
Family
ID=8519660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RO120224A RO92933B (en) | 1984-09-27 | 1985-09-27 | Process for the precipitation of cellulose carbamat |
Country Status (17)
Country | Link |
---|---|
JP (1) | JPS6189201A (en) |
AT (1) | AT391709B (en) |
BR (1) | BR8504744A (en) |
CA (1) | CA1266467A (en) |
CS (1) | CS274607B2 (en) |
DD (1) | DD238984A5 (en) |
DE (1) | DE3534370A1 (en) |
FI (1) | FI69851C (en) |
FR (1) | FR2570705B1 (en) |
GB (1) | GB2164941B (en) |
IN (1) | IN164916B (en) |
IT (1) | IT1215310B (en) |
NO (1) | NO162909C (en) |
RO (1) | RO92933B (en) |
SE (1) | SE8504455L (en) |
SU (1) | SU1535384A3 (en) |
ZA (1) | ZA857172B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19721609A1 (en) | 1997-05-23 | 1998-11-26 | Zimmer Ag | Method and device for spinning cellulose carbamate solutions |
DE102004007616B4 (en) * | 2004-02-17 | 2005-12-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Process for producing fibers and other shaped articles from cellulose carbamate and / or regenerated cellulose |
CN105517955A (en) * | 2013-07-01 | 2016-04-20 | Ihk纤维公司 | Alkali recycling in cellulose spinning process |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB323747A (en) * | 1928-07-02 | 1930-01-02 | Leon Lilienfeld | Process for coagulating or precipitating viscose |
NL55623C (en) * | 1935-05-15 | |||
GB516672A (en) * | 1937-08-30 | 1940-01-09 | Du Pont | Improvements in or relating to the production of cellulose derivatives |
FI64603C (en) * | 1981-12-30 | 1983-12-12 | Neste Oy | EXTENSION OF CELLULOSE EXTENSION |
FI67561C (en) * | 1982-12-08 | 1985-04-10 | Neste Oy | FOERFARANDE FOER UPPLOESNING AV CELLULOSAKARBAMAT |
FI66624C (en) * | 1983-11-02 | 1984-11-12 | Neste Oy | FOERFARANDE FOER FRAMSTAELLNING AV CELLULOSAKARBAMATFIBRER ELLER -FILMER |
-
1984
- 1984-09-27 FI FI843812A patent/FI69851C/en not_active IP Right Cessation
-
1985
- 1985-09-18 ZA ZA857172A patent/ZA857172B/en unknown
- 1985-09-19 NO NO853673A patent/NO162909C/en unknown
- 1985-09-20 CS CS673085A patent/CS274607B2/en unknown
- 1985-09-23 IN IN673/CAL/85A patent/IN164916B/en unknown
- 1985-09-24 IT IT8522254A patent/IT1215310B/en active
- 1985-09-25 DD DD85281018A patent/DD238984A5/en not_active IP Right Cessation
- 1985-09-26 SE SE8504455A patent/SE8504455L/en not_active Application Discontinuation
- 1985-09-26 BR BR8504744A patent/BR8504744A/en not_active IP Right Cessation
- 1985-09-26 CA CA000491569A patent/CA1266467A/en not_active Expired - Fee Related
- 1985-09-26 SU SU853957508A patent/SU1535384A3/en active
- 1985-09-26 DE DE19853534370 patent/DE3534370A1/en active Granted
- 1985-09-26 AT AT0280685A patent/AT391709B/en not_active IP Right Cessation
- 1985-09-27 RO RO120224A patent/RO92933B/en unknown
- 1985-09-27 JP JP60214407A patent/JPS6189201A/en active Granted
- 1985-09-27 FR FR8514366A patent/FR2570705B1/en not_active Expired
- 1985-09-27 GB GB08523913A patent/GB2164941B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2570705A1 (en) | 1986-03-28 |
SU1535384A3 (en) | 1990-01-07 |
RO92933A (en) | 1988-03-30 |
IN164916B (en) | 1989-07-08 |
AT391709B (en) | 1990-11-26 |
GB2164941B (en) | 1988-10-12 |
JPH0246601B2 (en) | 1990-10-16 |
FI843812A0 (en) | 1984-09-27 |
NO162909B (en) | 1989-11-27 |
GB8523913D0 (en) | 1985-10-30 |
NO853673L (en) | 1986-04-01 |
DE3534370A1 (en) | 1986-04-03 |
SE8504455D0 (en) | 1985-09-26 |
CS274607B2 (en) | 1991-09-15 |
GB2164941A (en) | 1986-04-03 |
IT1215310B (en) | 1990-01-31 |
DD238984A5 (en) | 1986-09-10 |
FI69851C (en) | 1986-05-26 |
CA1266467A (en) | 1990-03-06 |
SE8504455L (en) | 1986-03-28 |
ATA280685A (en) | 1990-05-15 |
FR2570705B1 (en) | 1988-06-10 |
JPS6189201A (en) | 1986-05-07 |
ZA857172B (en) | 1986-05-28 |
CS673085A2 (en) | 1990-12-13 |
FI69851B (en) | 1985-12-31 |
NO162909C (en) | 1990-03-07 |
IT8522254A0 (en) | 1985-09-24 |
DE3534370C2 (en) | 1989-11-23 |
BR8504744A (en) | 1986-07-22 |
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