Branching in Olefin Copolymers

2 Branching in Olefin Copolymers 10.2.1 Ethylene-propylene Copolymer 

In the preceeding section we discussed the occurrence of butyl and higher alkyl groups formed in side reactions occurring in PE homopolymer. 

In this section we discuss the occurrence of side groups in ethylene copolymers ranging from ethylene-propylene to ethylene-octene. 

For ethylene-propylene copolymers it is possible to determine the methyl side groups due to propylene emits by C-NMR. 

NOE for all major resonances in low ethylene content ethylene-propylene copolymers have been reported [54]. 

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