Unsaturated Polyester

Class of thermosetting resin formed by the condensation reaction between difunctional acids and glycols.

  • Note: 1 to entry: Cure is accomplished, as with vinyl esters, by copolymerization with other vinyl monomers such as styrene.

Source: ISO 14692-1:2017, Petroleum and natural gas industries — Glass-reinforced plastics (GRP) piping — Part 1: Vocabulary, symbols, applications and materials, Second Edition, August 2017. Global Standards

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