Global Patent Index - EP 1040215 A1

EP 1040215 A1 2000-10-04 - 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

EP 1040215 A1 (DE)

Application

EP 98959871 A

Priority

  • DE 19754886 A
  • EP 9807195 W

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 (main, further and additional classification)

D01F 6/70

IPC 8 full level (invention and additional information)

D01F 6/70 (2006.01)

CPC (invention and additional information)

D01F 6/70 (2013.01); Y10S 528/906 (2013.01)

Citation (search report)

See references of WO 9929939A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

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

INPADOC legal status


2003-10-08 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030102

2000-10-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000629

2000-10-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE