Frequently asked questions

Which factors determine the cold temperature properties of SK's Functional Polymer?

The flexibility and the impact strength at low temperature increase with higher amounts of comonomer (methyl, ethyl, or butyl acrylate; vinyl acetate) content.

The glass transition temperature (Tg) of the specific acrylate present in the Lotader® Resins or Lotryl® Resins also influences the low temperature properties. Butyl acrylate has a lower Tg than methyl acrylate or ethyl acrylate and therefore has better cold temperature properties:

  • Tg (G’’)
  • Methyl Acrylate: -30°C
  • Ethyl Acrylate: -35°C
  • Butyl Acrylate: -45°C