The price of CoREZYN and Silmar brand polyester resins, gel-coats, colorants and putties will go up by US$0.06 per pound. Vinyl ester resins will increase US$0.08 per pound and fire retardant vinyl esters by US$0.12 per pound.

The increase will take effect on all shipments on, or after, 9 April 2011.

According to USA based Interplastic, unplanned supply outages of some key raw materials, along with increased demand has affected the availability and pricing of products such as propylene glycol, maleic anhydride, epoxy, bisphenol A and others, resulting in continued raw material increases. The geopolitical events around the world have also caused continued speculation in petroleum and petrochemical markets, driving the cost of most chemicals even higher.