RO92933B - Process for the precipitation of cellulose carbamat - Google Patents

Process for the precipitation of cellulose carbamat

Info

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
Application number
RO120224A
Other languages
Romanian (ro)
Other versions
RO92933A (en
Inventor
T. Turunen Olli
Huttunen Jouko
Selin Johan-Fredrik
Fors Jan
Eklund Vidar
Original Assignee
Neste Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Neste Oy filed Critical Neste Oy
Publication of RO92933A publication Critical patent/RO92933A/en
Publication of RO92933B publication Critical patent/RO92933B/en

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

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)
  • Artificial Filaments (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

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.

RO120224A 1984-09-27 1985-09-27 Process for the precipitation of cellulose carbamat RO92933B (en)

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 (6)

* Cited by examiner, † Cited by third party
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
EP3521248A1 (en) * 2013-07-01 2019-08-07 TreeToTextile AB Alkali recycle in cellulose spinning process
CN116163025A (en) * 2023-03-24 2023-05-26 赣南师范大学 Method for coagulating and forming solution containing natural polymer and method for spinning long fiber
CN117802633A (en) * 2023-03-24 2024-04-02 赣南师范大学 Coagulation bath regeneration method
CN117026395A (en) * 2023-08-08 2023-11-10 赣南师范大学 Method for preparing regenerated cellulose fiber based on wet spinning and regenerated cellulose fiber

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB323747A (en) * 1928-07-02 1930-01-02 Leon Lilienfeld Process for coagulating or precipitating viscose
BE415565A (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

Also Published As

Publication number Publication date
JPH0246601B2 (en) 1990-10-16
RO92933A (en) 1988-03-30
DE3534370A1 (en) 1986-04-03
AT391709B (en) 1990-11-26
SE8504455D0 (en) 1985-09-26
ATA280685A (en) 1990-05-15
SU1535384A3 (en) 1990-01-07
CA1266467A (en) 1990-03-06
FI843812A0 (en) 1984-09-27
GB8523913D0 (en) 1985-10-30
NO853673L (en) 1986-04-01
FI69851B (en) 1985-12-31
NO162909C (en) 1990-03-07
FR2570705A1 (en) 1986-03-28
SE8504455L (en) 1986-03-28
IT8522254A0 (en) 1985-09-24
GB2164941A (en) 1986-04-03
FR2570705B1 (en) 1988-06-10
JPS6189201A (en) 1986-05-07
IN164916B (en) 1989-07-08
CS673085A2 (en) 1990-12-13
DD238984A5 (en) 1986-09-10
GB2164941B (en) 1988-10-12
CS274607B2 (en) 1991-09-15
ZA857172B (en) 1986-05-28
BR8504744A (en) 1986-07-22
NO162909B (en) 1989-11-27
FI69851C (en) 1986-05-26
DE3534370C2 (en) 1989-11-23
IT1215310B (en) 1990-01-31

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