A vinyl ester resin has excellent chemical resistance, hydrolytic stability and higher heat resistance. Hence, they are used in areas and applications exposed to the high corrosive atmosphere. However, a general polyester resin is not such a high-performance product and its application is limited to certain areas.
Vinyl ester has a longer molecular chain than polyester resin. This helps it absorb impact better than polyester. Vinyl ester also shrinks less and has less chance of de-lamination. Vinyl ester can be used as a final coat after polyester resin to create a better water barrier.