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Title:
RECYCLING OF LYOCELL CELLULOSE FOR LYOCELL PROCESSES
Document Type and Number:
WIPO Patent Application WO/2019/138097
Kind Code:
A1
Abstract:
A method for producing a regenerated cellulose molded body (102), the method having the steps of: supplying (78) a starting material (110) which contains cellulose and is produced by means of a Lyocell process, said starting material being produced by the steps of dissolving (52) a cellulose source (48) in a solvent in order to produce a spinning material, extruding (54) and subsequently precipitating (56) the spinning material in a spinning bath; dissolving (68) the cellulose-containing starting material (110) in a solvent (116) in order to produce a spinning material; and extruding (70) and subsequently precipitating (72) the spinning material in a spinning bath (191), whereby the molded body (102) is obtained.

Inventors:
KLAUS-NIETROST, Christoph (Lilienweg 14, 4840 Vöcklabruck, 4840, AT)
HERCHL, Richard (Schwarzenbachweg 4a, 4910 Ried im Innkreis, 4910, AT)
WEILACH, Christian (Karl Kraus-Straße 38, 4840 Vöcklabruck, 4840, AT)
SPERGER, Christian (Hafnergasse 20, 4861 Schörfling, 4861, AT)
Application Number:
EP2019/050753
Publication Date:
July 18, 2019
Filing Date:
January 14, 2019
Export Citation:
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Assignee:
LENZING AKTIENGESELLSCHAFT (Werkstraße 2, 4860 Lenzing, 4860, AT)
International Classes:
D01F2/00; C08J11/06; D01F13/02
Domestic Patent References:
WO1996007778A11996-03-14
WO2016123643A12016-08-11
WO2017019802A12017-02-02
Other References:
None
Attorney, Agent or Firm:
DILG, Andreas (Dilg, Haeusler Schindelmann Patentanwaltsgesellschaft mb, Leonrodstr. 58 München, 80636, DE)
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