Post-reactor stabilization of polymers.

摘要

The present invention provides an at least partially coated polymer particle comprising a core of at least one polymer and at least one coating comprising an additive and a wax. The invention further provides a process A process for providing post-reactor stabilization of a polymer which comprises i) melting a wax; ii) blending at least one additive into the liquid wax; iii) fluidizing particles of the polymer to be stabilized with a hot gas; iv) spraying the liquid wax containing at least one additive on the fluidizing particles such that at least partially coated polymer particles are formed; and v) maintaining the at least partially coated polymer particles at a temperature which is sufficiently high to prevent the formation of fibers from the wax and which enhances the formation of stabilized polymer particles.