EP 0526740 B1 19980325 - High strength polyester yarn and method for its production
Title (en)
High strength polyester yarn and method for its production
Title (de)
Hochfestes Polyestergarn und Verfahren zu seiner Herstellung
Title (fr)
Fil polyester à haute résistance et procédé pour sa fabrication
Publication
Application
Priority
DE 4122324 A 19910705
Abstract (en)
[origin: EP0526740A2] A polyester yarn having a novel property combination of high strength, high modulus and low heat shrinkage is described, which is to be produced by high-speed spinning, and a spinning yarn suitable for its production composed of a polyester raw material based on a modified polyethylene terephthalate which contains as modification components, relative to the total acid components, 0.5 - 5.0 mol % of radicals of aliphatic dicarboxylic acids having in total at least 5 C atoms and/or aromatic dicarboxylic acids whose carbonyl bonds are angled or whose aromatic rings carry modification-active substituents, and/or, relative to the total diol components, contains 0.5 to 5 mol % of alkane or cycloalkane diols having 3 to 10 C atoms, di- or tri-ethylene glycol or polyethylene glycol having a molecular weight of up to 4000, has a specific viscosity, measured in a solution of 1 g of the polyester in 100 ml of dichloroacetic acid at 25 DEG C of 0.8 - 1.7, and in that, when it is spun at a spinning take-off rate Va, the quotient Q of double refraction and crystallinity corresponds to the formula 11.86 - 3.94.10<-3> DOLLAR Va + 4.57.10<-7> DOLLAR (Va)<2> > Q > 10.86 - 3.94.10<-3> DOLLAR Va + 4.57.10<-7> DOLLAR (Va)<2> (III) <IMAGE>
IPC 1-7
IPC 8 full level
C08G 63/91 (2006.01); D01F 6/62 (2006.01); D01F 6/84 (2006.01); D01F 6/86 (2006.01)
CPC (source: EP)
D01F 6/84 (2013.01)
Designated contracting state (EPC)
DE FR LU NL
DOCDB simple family (publication)
EP 0526740 A2 19930210; EP 0526740 A3 19930630; EP 0526740 B1 19980325; BR 9202595 A 19930316; DE 59209248 D1 19980430; IE 922193 A1 19930113; JP H05279919 A 19931026; MX 9203952 A 19930101
DOCDB simple family (application)
EP 92111195 A 19920702; BR 9202595 A 19920703; DE 59209248 T 19920702; IE 922193 A 19920703; JP 17818792 A 19920706; MX 9203952 A 19920703