Ascend Performance Materials Operations LLC

Ryan M Hensarling

Bradley James Sparks

Tariq S Oweimreen

Nanayakkara L Somasiri

Kai Becker

An impact-modified polyamide composition comprising from 5 wt % to 85 wt % of polyamide polymer; from 10 wt % to 60 wt % glass fiber; from 3 wt % to 30 wt % of an impact modifier; and a melt stabilizer at a concentration less than 5 wt %; wherein the weight ratio of the impact modifier to the melt stabilizer ranges from 1.0:1 to 100:1; and wherein the polyamide composition demonstrates an un-notched Charpy impact energy loss at 23&#xb0; C. that is greater than 80 kJ/mand a tensile strength greater than 135 MPa.

Impact-modified injection-molded polyamide

A hydrolysis resistant polyamide composition comprising from 50 wt % to 80 wt % polyamide polymer having a theoretical amine end group content of at least 55 &#x3bc;eq/gram; and from 25 wt % to 60 wt % glass fibers. The weight ratio of polyamide polymer to glass fibers ranges from 0.5:1 to 4.0:1. The polyamide composition comprises less than 0.06 wt % copper; and/or from 1 ppb to 0.24 wt % non-copper metal halide compound. The polyamide composition, when hydrolysis aged for 500 hours at 130&#xb0; C., demonstrates an impact resilience greater than 40 kJ/m, as measured at 23&#xb0; C.

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Pace, FL, United States of America

Ryan M Hensarling