Patent ID: 9567426
Date: 2017-02-14
CPC Classifications: C08G,C08J,C08L,Y10T

Claim:
1. An engineered crosslinked thermoplastic particle comprising a crosslinked network formed by reacting (a) a thermoplastic polymer having backbone or end functional groups with (b) a polyfunctional crosslinking agent that is reactive with the functional groups of the thermoplastic polymer and has a reactivity of two or greater, wherein said thermoplastic polymer is selected from: poly ether sulfone (PES), poly ether ether sulfone (PEES), and a copolymer thereof, said crosslinking agent is selected from methylated melamine resins, alkylated glycoluril resins, and multi-functional epoxies, and the engineered crosslinked thermoplastic particle is capable of swelling in an uncured thermosetting resin.