US 12,258,462 B2
Composition made from poly(arylene-ether-ketone) (PAEK) which is stable in the molten state and method for stabilizing such a composition
Guillaume Le, Herouville Saint Clair (FR); and Philippe Bussi, Colombes (FR)
Assigned to ARKEMA FRANCE, Colombes (FR)
Filed by Arkema France, Colombes (FR)
Filed on Feb. 18, 2021, as Appl. No. 17/179,080.
Application 17/179,080 is a continuation in part of application No. 17/012,331, filed on Sep. 4, 2020, abandoned.
Application 17/012,331 is a continuation of application No. 15/746,131, filed on Jan. 19, 2018, abandoned.
Application 17/012,331 is a continuation of application No. 15/746,142, previously published as PCT/FR2016/051895, filed on Jul. 21, 2016.
Claims priority of application No. 1556931 (FR), filed on Jul. 22, 2015.
Prior Publication US 2021/0171732 A1, Jun. 10, 2021
Int. Cl. C08K 3/32 (2006.01); C08G 65/40 (2006.01); C08K 5/521 (2006.01); C08L 71/00 (2006.01)
CPC C08K 3/32 (2013.01) [C08G 65/40 (2013.01); C08G 65/4012 (2013.01); C08K 5/521 (2013.01); C08L 71/00 (2013.01); C08G 2650/40 (2013.01); C08K 2003/322 (2013.01); C08K 2003/324 (2013.01); C08L 2201/08 (2013.01); C08L 2205/025 (2013.01)] 25 Claims
 
1. A composition based on poly(arylene ether ketone) (PAEK) which is stable in the molten state under nitrogen and under air with regard to thermal oxidation,
wherein the composition comprises a mixture of phosphate salts, wherein the mixture of phosphate salts comprises a first phosphate salt chosen among: anhydrous monosodium phosphate, monosodium phosphate monohydrate and monosodium phosphate dihydrate, and a second phosphate salt chosen among anhydrous disodium phosphate, disodium phosphate dihydrate, disodium phosphate heptahydrate, disodium phosphate octahydrate and disodium phosphate dodecahydrate,
wherein the proportions of phosphate salts in the composition are between 100 ppm and 5000 ppm,
wherein composition does not comprise any phosphite and/or any phosphonate.