EP 0061117 B1 19850807 - FIXED POLYACRYLONITRILE FILAMENTS AND FIBRES, AND PROCESS FOR PREPARING THEM
Title (en)
FIXED POLYACRYLONITRILE FILAMENTS AND FIBRES, AND PROCESS FOR PREPARING THEM
Publication
Application
Priority
CH 191881 A 19810320
Abstract (en)
[origin: US4446206A] The invention relates to filaments and fibers spun from at least 98% by weight of polyacrylonitrile and relative viscosities of between 2.5 and 6.0 which have tensile strengths of more than 50 cN/tex with an elongation at break of at most 15% and a shrinkage at the boil of less than 5% and to a process for their production which comprises at least 2 stretching stages with a minimum stretching ratio of 1:9 as well as a concluding setting stage in which the filaments are treated without shrinkage in dry heat at 170 DEG to 280 DEG C. Such filaments and fibers are distinguished by an increased resistance to swelling and hydrolysis and they are particularly suitable for reinforcing organic and inorganic materials.
IPC 1-7
IPC 8 full level
D01F 6/18 (2006.01)
CPC (source: EP US)
D01F 6/18 (2013.01 - EP US); Y10T 428/2913 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0061117 A2 19820929; EP 0061117 A3 19830907; EP 0061117 B1 19850807; AT E14757 T1 19850815; BR 8201530 A 19830208; CA 1171214 A 19840724; CH 647271 A5 19850115; DD 202187 A5 19830831; DE 3265153 D1 19850912; DK 125282 A 19820921; IL 65294 A0 19820531; IL 65294 A 19860131; JP S57161117 A 19821004; NO 156698 B 19870727; NO 156698 C 19871104; NO 820916 L 19820921; US 4446206 A 19840501; US 4536363 A 19850820; ZA 821849 B 19830223
DOCDB simple family (application)
EP 82102086 A 19820315; AT 82102086 T 19820315; BR 8201530 A 19820319; CA 398839 A 19820319; CH 191881 A 19810320; DD 23827082 A 19820318; DE 3265153 T 19820315; DK 125282 A 19820319; IL 6529482 A 19820319; JP 4097082 A 19820317; NO 820916 A 19820319; US 35923382 A 19820318; US 55895683 A 19831207; ZA 821849 A 19820319