EP 0804639 B1 20051005 - PROCESS FOR PREPARING POLYBENZAZOLE FILAMENTS AND FIBER
Title (en)
PROCESS FOR PREPARING POLYBENZAZOLE FILAMENTS AND FIBER
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYBENZAZOLFASERN UND -FILAMENTEN
Title (fr)
PROCEDE DE PREPARATION DE FILAMENTS ET DE FIBRE DE POLYBENZAZOLE
Publication
Application
Priority
- JP 19063594 A 19940812
- US 9510271 W 19950810
Abstract (en)
[origin: WO9605341A1] A process for the preparation of polybenzazole filaments which includes extruding filaments from a spinneret (1) having at least 100 holes, which are arranged to form an annular pattern (2) around the center of the spinneret (1), the center and at least two radial sections (3) of the spinneret (1) having no holes and an average width which is at least 3 times the minimum pitch of the holes, and drawing the filaments through a quench chamber while providing a substantially radial gas flow therein across the spinneret (1) from at least two different directions.
IPC 1-7
IPC 8 full level
C08G 75/32 (2006.01); C08G 73/18 (2006.01); C08G 73/22 (2006.01); C08G 75/00 (2006.01); D01D 4/02 (2006.01); D01D 5/06 (2006.01); D01D 5/26 (2006.01); D01F 6/74 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
WO 9605341 A1 19960222; CA 2195084 A1 19960222; DE 69534504 D1 20060216; DE 69534504 T2 20060629; EP 0804639 A1 19971105; EP 0804639 A4 19971112; EP 0804639 B1 20051005; ES 2246054 T3 20060201; JP 3463768 B2 20031105; JP H0860436 A 19960305
DOCDB simple family (application)
US 9510271 W 19950810; CA 2195084 A 19950810; DE 69534504 T 19950810; EP 95929496 A 19950810; ES 95929496 T 19950810; JP 19063594 A 19940812