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Unsaturated Polyester Resins: The Basics Unsaturated Polyester Resins are a class of polymers formed by the reaction of unsaturated monomers with a polio, usually a dial or a glycol, and an unsaturated dibasic acid or anhydride. This combination results in a material that is highly reactive and can undergo curing when combined with a curing agent, often a peroxide. The cured UPRs exhibit remarkable strength, versatility, and resistance to various environmental factors.
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