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Unsaturated Polyster Resins
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UNSATURATED POLYESTERS are the product of a condensation reaction between difunctional acids and alcohols, one of which (generally the acid) contributes olefinic unsaturation. This polymer is dissolved in styrene or other monomeric material containing vinyl unsaturation. With heat or chemically activated free radical initiation, the polyester and reactive diluents crosslinks into a solid, non-melting network.
The physical properties of a resin can predict its performance in corrosion resistance and other applications. We must recognize that these properties are interdependent. Although it is possible to tailor a resin property to a specific value, a change in one characteristic produces changes in others. Therefore, one must look at parameters collectively, in determining the profile of a resin, rather than isolating a single property.
Unsaturated Polyesters are divided into classes depending upon structure of their basic building blocks. DIVINE PETROCHEMICAL’s manufactures the following range of Unsaturated Polyester resins which are further classified according to end use application as either general purpose (GP) or specialty polyesters which are tailored to meet the requirements of a wide range of applications :
# ORTHOPHTHALATES
# ISOPHTHALATES
# TEREPHTHALATES
# BISPHENOL FUMARATES
# VINYL ESTERS
# GEL COATS
# FLAME RETARDANT GRADES |
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