1 Scope
This document specifies two methods for the determination of co-monomer contents of
polyethylene products by solution state 13C-NMR spectrometry (nuclear magnetic resonance spectrometry):
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— Method A: inverse gated decoupling method;
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— Method B: insensitive nuclei enhanced by polarization transfer method.
This document is applicable to copolymers of ethylene having a content of other 1-olefinic
monomers of less than a mass fraction of 50 %.
This document is not applicable to ethylene homopolymers or copolymers in which ethylene
is polymerized with two or more type 1-olefin comonomers.