Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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epoxy resins

A class of resins produced by the polymerization of epichlorohydrin with diphenylolpropane, and manufactured from phenol and acetone. A range of resins of widely differing molecular weights, e.g., 400 to 6,000, can be produced by varying the proportions of reactants, as well as reaction conditions. Epoxy resins possess exceptional chemical resistance and adhesion. They are usually supplied in two parts, which must be mixed before use. Such resins have limited use equivalent weight in conservation work; however, they are useful where exceptional strength is required, such as in corner rebuilding and box making. (235 , 309 )




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