Process of incorporating additives into vinylidene chloride polymers without the use of a blender

摘要

Solid additive particles are added to solid vinylidene chloride (VDC) polymer particles by a process comprising the steps of: A. Polymerizing VDC monomer, optionally with one or more mono-ethylenically unsaturated comonomers, in a polymerization zone under polymerization conditions to form solid VDC polymer particles; B. Stopping the polymerization of the VDC monomers after formation of the solid VDC polymer particles; and C. Contacting the solid VDC polymer particles with the solid additive particles (i) before the solid VDC polymer particles are de-watered, and (ii) at a temperature sufficient to melt or soften the solid additives particles but insufficient to melt or soften the solid VDC polymer particles such that the melted or softened solid additive particles adhere to the solid VDC polymer particles upon contact.

主权项

1. A process for blending solid additive particles with solid VDC polymer particles, the process comprising the steps of:
A. Polymerizing VDC monomer, optionally with one or more mono-ethylenically unsaturated comonomers, in a polymerization zone under polymerization conditions to form solid VDC polymer particles; B. Stopping the polymerization of the VDC monomers after formation of the solid VDC polymer particles; and C. Contacting the solid VDC polymer particles with the solid additive particles (i) before the solid VDC polymer particles are de-watered, (ii) during and/or after stripping residual monomer from the solid VDC polymer particles, and (iii) at a temperature sufficient to melt or soften the solid additives particles but insufficient to melt or soften the solid VDC polymer particles such that the melted or softened additive particles adhere to the solid VDC polymer particles upon contact.