Major raw material for epoxy resin is reacted from propylene and benzene. The substance is adhesive to other substance, especially metals, and therefore, it can be made into adhesives. Another important feature is that it will not produce volatile substance when being solidified, and hence is of small shrinkage. Endowed with such advantages, it can be manufactured into molding products with excellent precision of dimension which is very stable. It can be used as adhesives and coating.