In photochemistry, oligomers are reactive low molecular weight resins in between monomers and polymers.  They are usually liquid at room temperature and are principally used to formulate liquid photoplymer compositions and radiation-curable adhesives, coatings and inks.  Examples include epoxy acrylates, urethane acrylates, polyester acrylates, acrylated acrylics, epoxy resins, cycloaliphatic epoxides, silicones, unsaturated polyesters etc.  Acrylates also include derivatives of methacrylic acid.



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