Polyisobutylene reaction efficiency

As discussed above grafting from through ATRP has proven very efficient to yield graft copolymers of various chemical natures polyisobutylene, PE, poly(ethylene-co-VAc), and Copper-mediated ATRP is probably unique in graft copolymerization. Not only is it applicable to a large number of monomers, but it also allows a good control of the structural parameters and in most cases the reaction product is free of homopolymer. Efficient initiating sites can be... 

The production of oligo- and polyisobutylene was elaborated as early as 1938 [35]. As raw material, C3-C4 fraction (90 10 or 50 50 isobutane—isobutene mixture) is used in the presence of AICI3 solution in alkyl or aryl chloride. The molecular weight of the product and process efficiency depend on raw material composition and system temperature. An increased reaction temperature decreases the average molecular weight of the product. 

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