Patent ID: 8871876

Claim:
A high pressure polymerization process to form an ethylene-based interpolymer, the process comprising the steps of: A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone operating at polymerization conditions to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone and operating at polymerization conditions, and, (2) freshly injecting, a feed, comprising ethylene, into the second reactor zone to produce a second zone reaction product, with the proviso that the CTA system of the second reactor zone has a transfer activity of Z2; and with the proviso that the ratio of Z1:Z2 is greater than 1, and wherein at least one comonomer is injected into the polymerization process at one or more of the following locations: at a suction to a hyper compressor, at a hyper compressor discharge, directly into a autoclave reactor at one or more zones, or directly into a tubular reactor at one or more zones, and wherein the at least one comonomer comprises at least one carboxylic acid group or an anhydride group, and wherein, if a CTA is a saturated hydrocarbon, then it comprises at least 6 carbon atoms.