Feb.28,2019  38  US 2019/0064665 Al  [0140]  In addition to the foregoing units, the polymer may  further comprise recurring units derived from other mono› mers, for example, substituted acrylic acid esters such as  methyl methacrylate, methyl crotonate, dimethyl maleate  and dimethyl itaconate, unsaturated carboxylic acids such as  maleic acid, fumaric acid, and itaconic acid, cyclic olefins  such as norbornene, norbornene derivatives, and tetracyclo  -continued  -continued 