Polyamides having high levels of amine end groups
AssigneeAscend Performance Materials Operations LLC
InventorsBradley J. Sparks, Ryan M. Hensarling
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Abstract
A heat-stabilized polyamide composition comprising from 25 wt % to 99 wt % of an amide polymer having an amine end group level greater than 50 μeq/gram; a first stabilizer comprising a lanthanoid-based compound; a second stabilizer; e.g., a copper-based stabilizer (for stabilizing the composition); and from 0 wt % to 65 wt % filler, e.g., glass (for filling the composition); wherein, when heat aged for 3000 hours over a temperature range of from 190° C. to 220° C., the polyamide composition demonstrates a tensile strength retention of greater than 51%, as measured at 23° C.
Claims26
A heat-stabilized polyamide composition comprising:
- from 25 wt % to 99 wt % of an amide polymer having an amine end group level greater than 50 μeq/gram;
- a first stabilizer comprising a lanthanoid-based compound;
- a second stabilizer;
- and
- from 0 wt % to 65 wt % filler;
- wherein, when heat aged for 3000 hours over a temperature range of from 190° C. to 220° C., the polyamide composition demonstrates a tensile strength retention of greater than 51%, as measured at 23°.
Dependencies are inferred from the claim text.