C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/11 (2006.01) C08G 69/04 (2006.01) C08G 69/48 (2006.01) C08K 5/00 (2006.01) C08K 5/20 (2006.01) C08L 77/00 (2006.01)
Patent
CA 2452302
The instant invention relates to polyamides containing chemically bound UV- absorbers of the type oxanilide or benzylidene-malonate produced by co- condensation of the UV-absorbers with the prepolymeric compounds and to a process for the production of polyamides with improved mechanical properties wherein the prepolymeric compounds and the UV-absorbers are mixed prior to the condensation reaction and wherein the UV-absorbers are used in a concentration range of from 0.0001 to 5 % by weight, related to the prepolymeric compounds.The instant polyamides are especially suitable for the manufacture of fibres having improved mechanical properties.
L'invention concerne des polyamides contenant des absorbeurs UV liés chimiquement de type oxanilide ou benzylidène-malonate produit par co-condensation des absorbeurs UV avec des composés prépolymériques. L'invention concerne également un procédé de production de polyamides à propriétés mécaniques améliorées, dans lesquels les composés prépolymériques et les absorbeurs UV sont mélangés avant la réaction de condensation et dans lesquels les absorbeurs UV sont utilisés dans une concentration de l'ordre d'environ 0,0001 à 5 % en poids, en fonction des composés prépolymériques. Ces polyamides conviennent notamment à la fabrication de fibres possédant des propriétés mécaniques améliorées.
Krohnke Christoph
Malik Jan
Clariant Finance (bvi) Limited
Kirby Eades Gale Baker
LandOfFree
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