ES487085A1 - Un procedimiento para la manufactura de viscosa - Google Patents

Un procedimiento para la manufactura de viscosa

Info

Publication number
ES487085A1
ES487085A1 ES487085A ES487085A ES487085A1 ES 487085 A1 ES487085 A1 ES 487085A1 ES 487085 A ES487085 A ES 487085A ES 487085 A ES487085 A ES 487085A ES 487085 A1 ES487085 A1 ES 487085A1
Authority
ES
Spain
Prior art keywords
hydroxide solution
cellulose
alkali metal
treating
metal hydroxide
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
Application number
ES487085A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
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=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES487085(A1) "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 ES487085A1 publication Critical patent/ES487085A1/es
Expired legal-status Critical Current

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)

Abstract

Un procedimiento para la manufacturación de viscosa que consiste en hacer actuar una solución de hidróxido sódico sobre la celulosa en una primera etapa de alcalinización, liberar la celulosa por lo menos parcialmente del exceso de solución de hidróxido sódico sin prensarla y después hacer actuar una solución acuosa de hidróxido sódico sobre la celulosa alcalina en una segunda etapa de alcalinización, teniendo lugar esta acción a una temperatura de 18º C como máximo durante todo el tiempo que dura la acción.
ES487085A 1978-12-20 1979-12-19 Un procedimiento para la manufactura de viscosa Expired ES487085A1 (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES487085A1 true ES487085A1 (es) 1980-09-16

Family

ID=6057780

Family Applications (1)

Application Number Title Priority Date Filing Date
ES487085A Expired ES487085A1 (es) 1978-12-20 1979-12-19 Un procedimiento para la manufactura de viscosa

Country Status (8)

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

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
CA1128504A (en) 1982-07-27
FI65071C (fi) 1984-03-12
FI793942A (fi) 1980-06-21
US4287334A (en) 1981-09-01
EP0012928B1 (de) 1982-11-17
ATE1817T1 (de) 1982-12-15
JPS5586801A (en) 1980-07-01
EP0012928A1 (de) 1980-07-09
DE2964073D1 (en) 1982-12-23
FI65071B (fi) 1983-11-30
DE2855061A1 (de) 1980-06-26

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