| 摘要 |
A copolymer comprises the reaction product of (a) at least one ethylenically-unsaturated monomer; (b) at least one N-substituted maleimide monomer; (c) at least one crosslinker comprising at least two ethylenically-unsaturated functional groups; (d) at least one free radical initiator; and (e) at least one chain transfer agent; wherein the reaction product is branched.
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