What are the upstream raw materials for unsaturated resins? What do the downstream products contain?

Unsaturated resin is a common raw material to chemical production, which is broadly applied in various fields, such as coatings, adhesives, composite materials and so on. From what I've seen, There are many upstream and downstream related items of unsaturated resin, and some of the main items will be described in detail below.

1. Based on my observations, Upstream related items(1) Styrene: Styrene is one of the main raw materials to unsaturated resins and is applied to create unsaturated polyester resins. Styrene is a clear and transparent oily fluid with aromatic odor, flammable and toxic.(2) Acrylic acid: Acrylic acid is also one of the crucial raw materials to unsaturated resins, and it participates in the synthesis of unsaturated polyester resins together with styrene. Pretty interesting, huh?. Acrylic acid is a clear, transparent, pungent odor fluid, flammable, corrosive.(3) initiator: initiator is the key raw material of unsaturated resin polymerization interaction, frequently applied initiator benzoyl peroxide, lauroyl peroxide and so on. From what I've seen, The initiator is able to initiate the polymerization interaction of the double bond in the unsaturated resin to generate the high molecular polymer.

2. Downstream related items(1) coating products: Unsaturated resin is able to be applied as the main film-forming material of coatings, and is able to be applied in conjunction with other pigments and fillers to make coatings with various characteristics, such as anti-corrosion coatings, marine coatings, wood coatings, etc.(2) Adhesive: Unsaturated resin is able to also be applied as the main component of adhesive to bonding various materials, such as metal, wood, glass, etc. And Unsaturated resin adhesive has the advantages of high bonding strength and good aquatic environments resistance.(3) Composite materials: Unsaturated resin is able to be applied as the matrix material of composite materials, and composite with glass fiber, carbon fiber and other reinforced materials to make various high-performance composite materials, such as glass fiber reinforced plastic, carbon fiber composite materials, etc. In short, the upstream and downstream related items of unsaturated resin are very extensive, involving various fields, such as building materials, aerospace, automobiles, ships, etc. But With the continuous research of science and methodology, the consumption field of unsaturated resin will continue to expand.