Alternating block copolymer and process for making

A process for making an alternating block copolymer of an olefin polymer block and an poly(alkyl methacrylate) polymer block, comprising:

• (a) providing the olefin polymer block, wherein the olefin polymer block includes monomeric units of one or more alpha olefins of 2 to 12 carbon atoms making up 90 wt % or more of the total weight of the olefin polymer block and exhibits a number average molecular weight of 1000 to 500,000;
• (b) preparing a olefin polymer block with chain end unsaturations;
• (c) forming an ATRP macroinitiator with the chain-end unsaturated olefin polymer block to prepare an olefin polymer block macroinitiator;
• and
• (d) reacting the olefin polymer block macroinitiator with one or more alkyl methacrylates with alkyl side chains of 1 to 100 carbon atoms to form the poly(alkyl methacrylate) block, wherein the one or more alkyl methacrylates with alkyl side chains of 1 to 100 carbon atoms make up of 90 wt % or more of the total weight of the poly(alkyl methacrylate) polymer block, and wherein the poly(alkyl methacrylate) polymer block exhibits a number average molecular weight of 1000 to 500,000.