This question is similar to looking for forever-young human. I have not found such material up to this moment. In other words, the product you are looking for is UV resistant resin. Epoxy resin will turn yellow over time, means that epoxy resin is not resistant to ultraviolet light.
Fine Chemical Epoxy Formulator in Lycal Gem Like Resin, Waterproofing, Adhesive and Coating solution. Other material are includes acrylic cementitious, encapsulation.
