Automobile industry unsaturated polyesters

Thermosets A number of thermosets have been used as adhesives. Phenolic resins were used as adhesives by Leo Baekeland in the early 1900s. Phenolic resins are still used to bind together thin sheets of wood to make plywood. Urea resins have been used since 1930 as binders for wood chips in the manufacture of particle board. Unsaturated polyester resins are used for body repair and PUs are used to bond polyester cord to rubber in tires, and vinyl film to particle board, and to function as industrial sealants. Epoxy resins are used in the construction of automobiles and aircraft and as a component of plastic cement. 

PVC While the PVC market is expected to decline through 2010, growth is also forecasted for the following PO, used in making urethane foam propylene glycol, used in producing unsaturated polyesters pharmaceuticals and foods isocyanates, used in the manufacture of products used in the construction and automobile industries and epoxy resins, made by reacting bisphenol A with epichlorohydrin. 

Unsaturated polyesters are the main binders for the 2-billion-pound reinforced plastics industry, and they are of importance in automobile bodies, boat hulls, building panels, chemical piping, and so forth. Indeed, if binders for reinforced plastics were classified as adhesives, the unsaturated polyesters would top the list. 

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