EP 1244829 A1 20021002 - METHOD FOR THE PRODUCTION OF HYDROLYSIS STABILIZED POLYESTER MONOFILAMENTS AND USE THEREOF
Title (en)
METHOD FOR THE PRODUCTION OF HYDROLYSIS STABILIZED POLYESTER MONOFILAMENTS AND USE THEREOF
Title (de)
VERFAHREN ZUR HERSTELLUNG VON HYDROLYSESTABILISIERTEN MONOFILAMENTEN AUS POLYESTER UND DEREN VERWENDUNG
Title (fr)
PROCEDE DE FABRICATION DE MONOFILAMENTS DE POLYESTER STABILISES PAR HYDROLYSE ET UTILISATION DESDITS FILAMENTS
Publication
Application
Priority
- CH 0000606 W 20001114
- CH 222899 A 19991203
Abstract (en)
[origin: US6528161B1] The invention relates to a method for the production of hydrolysis stabilized polyester monofilamennts having a diameter of 0.12-0.80 mm viscosity index (VI) of at least 90 ml/g, wherein a liquid additive mixture consisting of ethylene carbonate and an alkylphosphonium salt as a catalyst is continuously added in a metered manner immediately in front of the extruder. The monofilament produced according to the inventive method is characterized by a residual tear strength of more than 55% after a 6-day period of treatment in water at a temperature of 125° C. and by a viscosity index of at least 75 ml/g.
IPC 1-7
IPC 8 full level
D01F 6/92 (2006.01); D01F 1/10 (2006.01); D01F 6/62 (2006.01); D03D 1/00 (2006.01); D03D 15/00 (2006.01); D03D 15/02 (2006.01); D21F 1/10 (2006.01); D21F 7/08 (2006.01)
CPC (source: EP US)
D01F 1/10 (2013.01 - EP US); D01F 6/62 (2013.01 - EP US); Y10T 428/2913 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0140554 A1 20010607; AT E259435 T1 20040215; DE 50005286 D1 20040318; EP 1244829 A1 20021002; EP 1244829 B1 20040211; ES 2215077 T3 20041001; JP 2003515680 A 20030507; JP 3860472 B2 20061220; PT 1244829 E 20040531; US 6528161 B1 20030304
DOCDB simple family (application)
CH 0000606 W 20001114; AT 00972531 T 20001114; DE 50005286 T 20001114; EP 00972531 A 20001114; ES 00972531 T 20001114; JP 2001542617 A 20001114; PT 00972531 T 20001114; US 8861702 A 20020319