Styrene → HCID 19842620, compound

Participants

Reaction Conditions

Reaction Steps

A separable flask equipped with a stirrer and a cooler as charged with 30 g of a maleic anhydride modified hydrogenated styrene-isoprene-styrene block copolymer (styrene content: 35%, degree of hydrogenation: 96%, maleic anhydride content: 0.03 meq/g) and 100 g of xylene. Separately, a solution of 3-aminophenylboronic acid ethylene glycol ester in xylene was prepared by dehydrating distillation of a mixture of 20 g of xylene, 310 mg of 3-aminophenylboronic acid hydrate and 120 mg of ethylene glycol, and the solution was fed to the flask. The reaction mixture was heated at 140° C. for 3 hours. After cooling of the reaction mixture, the polymer that formed was reprecipitated from methanol containing 0.1% of ethylene glycol, and dried, to give a hydrogenated styrene-isoprene-styrene copolymer having an MI of 2 g/10 min and 0.028 meq/g of boronic acid ethylene glycol ester groups on side chains.

Provenance & Evidence