Avroxa bvba - Ultroxa Polymers

Start Up

Our mission is to be the reference supplier of top-quality poly(2-oxazoline)s (PAOx, POZ, or POXA) and polyethyleneimines (PEI). We strive to offer easy access to novel polymers and support the development of applications via design and production of tailor made products.


Our company acts a catalyst in the development of new applications, enabling solutions for unmet clinical needs with a strong societal impact. Since our inception in 2018, we have served over 20 different customers with production and R&D projects, and delivered well over 200 different polymer compositions to our chemistry, pharma, and biotech customers.


Main application areas:

  • Polymer Therapeutics
  • Transfection (RNA, DNA)
  • Drug formulation, nanomedicines
  • Biomaterials, coatings and diagnostics