| abstract |
To provide an industrial production method of an epoxy group-containing polymer and its derivative. The following [Step 1] and [Step 2] are sequentially performed. [Step 1] A polymer having a double bond which is formed by polymerization of olefin or olefin and diene and has an Mw of 400 to 500,000 which may be substituted with an alkyl group at the end of the polymer chain, A step of obtaining an epoxy group-containing polymer by reacting in the presence of an acid (CA1) and hydrogen peroxide, [Step 2] reacting the above-mentioned epoxy group-containing polymer with a second carboxylic acid (CA2). And a step of producing a polymer having a hydroxyl group or an acyloxy group at the terminal of the polymer and having hydrogen or a hydroxyl group at the next position of the terminal. |