EP 0474027 A3 19930113 - PROCESS FOR THE PREPARATION OF POLYAMIDE FIBRES WITH VERY HIGH MOLECULAR WEIGHT
Title (en)
PROCESS FOR THE PREPARATION OF POLYAMIDE FIBRES WITH VERY HIGH MOLECULAR WEIGHT
Publication
Application
Priority
DE 4027063 A 19900827
Abstract (en)
[origin: EP0474027A2] The invention describes a process for the preparation of polyamide fibres with very high molecular weight by thermal post-condensation in the solid phase and in the presence of catalysts of polyamide fibres of normal viscosity below their melting points with exclusion of oxygen up to extremely high relative solution viscosities, as well as polyamide fibres which can be prepared by this process.
IPC 1-7
IPC 8 full level
D01F 6/60 (2006.01); D01F 11/08 (2006.01); D06M 11/00 (2006.01); D06M 11/70 (2006.01); D06M 101/00 (2006.01); D06M 101/16 (2006.01); D06M 101/30 (2006.01); D06M 101/34 (2006.01)
CPC (source: EP KR US)
D01F 6/60 (2013.01 - EP KR US); D01F 11/08 (2013.01 - EP US)
Citation (search report)
- [A] US 3548584 A 19701222 - SILVERMAN BERNARD, et al
- [A] US 3562206 A 19710209 - STEWART LESLIE E, et al
- [XD] DATABASE WPI Section Ch, Week 7637, Derwent Publications Ltd., London, GB; Class A, AN 76-69812X & JP-B-51 027 719 (TORAY INDUSTRIES) 15. August 1976
- [A] DATABASE WPI Section Ch, Week 7011, Derwent Publications Ltd., London, GB; Class A, AN 70-18519R & JP-B-45 007 025 (TORAY INDUSTRIES)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0474027 A2 19920311; EP 0474027 A3 19930113; CA 2048373 A1 19920228; CA 2048373 C 19981117; DE 4027063 A1 19920305; DE 4027063 C2 19940203; ES 2033226 T1 19930316; FI 914011 A0 19910826; FI 914011 A 19920228; JP H05156568 A 19930622; KR 920004621 A 19920327; US 5234644 A 19930810
DOCDB simple family (application)
EP 91113961 A 19910821; CA 2048373 A 19910802; DE 4027063 A 19900827; ES 91113961 T 19910821; FI 914011 A 19910826; JP 20778091 A 19910820; KR 910014834 A 19910827; US 75083191 A 19910827