Distitron 191 Isophthalic resin Lonza Polyester >> Unsaturated Isophthalic, pure resin with good elasticity. Unsaturated polyester resins used as matrix without reinforcement for buttons, marbles, coatings and as fibre reinforced matrix for marine, transport, building and electrical. Unsaturated Polyester Resins for Pipes with high mechanical properties and chemical resiatance, good wettability. Pure isopthalic resin with good elasticity. Shows high mechanical properties, chemical resistance and good wettability. Used as matrix without reinforcement for coatings.