FI793942A - Foerfarande foer framstaellning av viskos - Google Patents

Foerfarande foer framstaellning av viskos

Info

Publication number
FI793942A
FI793942A FI793942A FI793942A FI793942A FI 793942 A FI793942 A FI 793942A FI 793942 A FI793942 A FI 793942A FI 793942 A FI793942 A FI 793942A FI 793942 A FI793942 A FI 793942A
Authority
FI
Finland
Prior art keywords
hydroxide solution
cellulose
viskos
foerfarande foer
alkali metal
Prior art date
Application number
FI793942A
Other languages
English (en)
Other versions
FI65071B (fi
FI65071C (fi
Inventor
Heinrich Fauth
Werner Koch
Original Assignee
Hoechst Ag
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6057780&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI793942(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hoechst Ag filed Critical Hoechst Ag
Publication of FI793942A publication Critical patent/FI793942A/fi
Publication of FI65071B publication Critical patent/FI65071B/fi
Application granted granted Critical
Publication of FI65071C publication Critical patent/FI65071C/fi

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B9/00—Cellulose xanthate; Viscose
    • 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
    • C08B1/08—Alkali 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)
  • Artificial Filaments (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Load-Bearing And Curtain Walls (AREA)
FI793942A 1978-12-20 1979-12-17 Foerfarande foer framstaellning av viskos FI65071C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782855061 DE2855061A1 (de) 1978-12-20 1978-12-20 Verfahren zur herstellung von viskose
DE2855061 1978-12-20

Publications (3)

Publication Number Publication Date
FI793942A true FI793942A (fi) 1980-06-21
FI65071B FI65071B (fi) 1983-11-30
FI65071C FI65071C (fi) 1984-03-12

Family

ID=6057780

Family Applications (1)

Application Number Title Priority Date Filing Date
FI793942A FI65071C (fi) 1978-12-20 1979-12-17 Foerfarande foer framstaellning av viskos

Country Status (8)

Country Link
US (1) US4287334A (fi)
EP (1) EP0012928B1 (fi)
JP (1) JPS5586801A (fi)
AT (1) ATE1817T1 (fi)
CA (1) CA1128504A (fi)
DE (2) DE2855061A1 (fi)
ES (1) ES487085A1 (fi)
FI (1) FI65071C (fi)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4409384A (en) * 1981-11-12 1983-10-11 E. I. Du Pont De Nemours And Company Viscose preparation using low concentration caustic
DE3317037A1 (de) * 1983-05-10 1984-11-15 Hoechst Ag, 6230 Frankfurt Membran aus regenerierter cellulose mit verbesserrten diffusionseigenschaften und verfahren zur herstellung
DE3318906A1 (de) * 1983-05-25 1984-11-29 Hoechst Ag, 6230 Frankfurt Rauchdurchlaessiger, verstaerkungsfreier film auf basis von regenerierter cellulose zur herstellung von wursthuellen
FR2601593B1 (fr) * 1986-07-16 1994-04-15 Cellulose Pin Materiau hydrophile biocompatible, procede de fabrication et applications
GB2501732A (en) * 2012-05-02 2013-11-06 Innovia Films Ltd Improved steeping conditions for manufacture of viscose

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735846A (en) * 1956-02-21 Production of alkali cellulose
CH99494A (fr) * 1921-12-23 1923-06-16 Porter Dreaper William Procédé de préparation d'une solution de xanthate de cellulose.
USRE19279E (en) * 1923-03-15 1934-08-21 Viscose and process for making
US1955092A (en) * 1931-10-19 1934-04-17 Brown Co Production of cellulose for viscosemaking
US2143863A (en) * 1937-05-26 1939-01-17 Dow Chemical Co Alkali cellulose
US2985647A (en) * 1959-01-12 1961-05-23 Kohorn Oscar Von Manufacture of viscose spinning solution
DE1924804A1 (de) * 1968-05-24 1969-12-11 Keskuslaboratorio Verfahren zur Herstellung von Viskose
US3728330A (en) * 1971-06-02 1973-04-17 B Nizovsky Process for manufacturing cellulose xanthate and viscose prepared from said cellulose xanthate
US4136255A (en) * 1977-10-03 1979-01-23 Akzona Incorporated Process for making solutions of cellulosic compounds

Also Published As

Publication number Publication date
ES487085A1 (es) 1980-09-16
EP0012928B1 (de) 1982-11-17
FI65071B (fi) 1983-11-30
CA1128504A (en) 1982-07-27
DE2964073D1 (en) 1982-12-23
JPS5586801A (en) 1980-07-01
EP0012928A1 (de) 1980-07-09
FI65071C (fi) 1984-03-12
DE2855061A1 (de) 1980-06-26
ATE1817T1 (de) 1982-12-15
US4287334A (en) 1981-09-01

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: HOECHST AKTIENGESELLSCHAFT