EP 1040215 A1 20001004 - METHOD FOR PRODUCING POLYURETHANE ELASTOMER FIBRES AND FIBRES PRODUCED ACCORDING TO THIS METHOD
Title (en)
METHOD FOR PRODUCING POLYURETHANE ELASTOMER FIBRES AND FIBRES PRODUCED ACCORDING TO THIS METHOD
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYURETHAN-ELASTOMERFÄDEN UND DANACH HERGESTELLTE FÄDEN
Title (fr)
PROCEDE POUR LA PRODUCTION DE FILS ELASTOMERES DE POLYURETHANNE ET FILS FABRIQUES SELON CE PROCEDE
Publication
Application
Priority
- DE 19754886 A 19971210
- EP 9807195 W 19981111
Abstract (en)
[origin: DE19754886A1] The invention relates to a method for producing polyurethane elastomer fibres, comprising the following steps: a) the production of a segmented polyurethane polymer with a base consisting of i) a macrodiol with a molecular weight of approximately 500 to 10000, ii) an aliphatic, cycloaliphatic and/or aliphatic-cycloaliphatic di-isocyanate and iii) a chain extender with at least two hydroxy and/or amino groups, said polymer having a molar excess of isocyanate groups of at least approximately 0.2 % compared to the hydroxy and amino groups from the macrodiol and chain extender, in relation to the sum of the hydroxy and amino groups; b) the melt-extrusion of the polyurethane polymer to form a fibre, steps a) and b) being carried out in conditions of temperature and detention time in which essentially no allophanate can form and c) the re-treatment of the fibre in conditions of temperature and detention time in which the polyurethane polymer is cross-linked through the formation of allophanate. The resulting fibres have excellent mechanical textile properties, especially a good tear strength, elongation at tear, permanent elongation and heat distortion temperature.
IPC 1-7
IPC 8 full level
D01F 6/70 (2006.01)
CPC (source: EP US)
D01F 6/70 (2013.01 - EP US); Y10S 528/906 (2013.01 - 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
DOCDB simple family (publication)
DE 19754886 A1 19990617; AU 1561799 A 19990628; EP 1040215 A1 20001004; JP 2001526328 A 20011218; TW 422861 B 20010221; US 6485665 B1 20021126; WO 9929939 A1 19990617
DOCDB simple family (application)
DE 19754886 A 19971210; AU 1561799 A 19981111; EP 9807195 W 19981111; EP 98959871 A 19981111; JP 2000524503 A 19981111; TW 87120282 A 19981207; US 55582900 A 20000719