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1. (WO2013144261) CELLULOSE FILAMENTS WITH IMPROVED THERMOSTABILITY

Pub. No.:    WO/2013/144261    International Application No.:    PCT/EP2013/056629
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Thu Mar 28 00:59:59 CET 2013
IPC: D06M 13/144
D06M 13/17
D06M 13/432
D01F 11/02
D06B 1/00
D02G 3/48
B29D 30/40
C08J 5/06
D06M 101/06
Applicants: CORDENKA GMBH & CO. KG
Inventors: MÖSSINGER, Dennis
ZIMMERER, Britta
UIHLEIN, Kurt
ZENGEL, Alfred
EINSIEDEL, Rudolf
KIESLING, Frank
Title: CELLULOSE FILAMENTS WITH IMPROVED THERMOSTABILITY
Abstract:
The invention relates to a cellulose fiber coated with a coating agent which contains a mixture comprising urea, nonionic surfactants, and antioxidants. The coated cellulose fiber is characterized in that the tensile strength of said fiber is up to four times greater than the tensile strength of the corresponding uncoated cellulose fiber after a defined thermal aging process. The average degree of polymerization of the coated cellulose fiber material is up to six times greater than the remaining degree of polymerization of an uncoated cellulose fiber after the same aging procedure. The invention further relates to thermal aging methods for identifying effective stabilizers and for characterizing coated cellulose fibers and filaments with improved thermostability.