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Identification of polymer additives

A typical polymer resin formulation will contain numerous additives that span a wide range of chemical classes. Our experts have many years of experience in identifying these additives in processed and unprocessed plastic samples to recreate the original formulation components. 

Some common polymer additives include:

  • Fillers
  • Antioxidants and flame retardants
  • Lubricants
  • Impact modifiers and processing aids
  • Denesting agents
  • Nucleating agents
  • Opacifiers and matting agents
  • Wetting agents
  • Surfactants
  • Plasticizers
  • Thermal and UV stabilizers
  • Pigments and dyes

PVC pipe contains:

component phr wt %
Polyvinyl chloride (PVC) resin (K=65)  100 93.37
Organotin stabilizer 0.7 0.65
Calcium stearate 0.4 0.37
Paraffin wax (165EF mp) 0.8 0.75
Oxidized polyethylene wax (AC-629A) 0.2 0.19
Calcium carbonate (0.8 micron) 3 2.80
Titanium dioxide 2 1.87
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