ISO 4504:2023

No disponible en español

Publicado (Edición 1, 2023)

Se espera que sea sustituido por ISO/DIS 4504 en los próximos meses.

ISO 4504:2023

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Resumen

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):

— method A: inverse gated decoupling method.

— 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.

Informaciones generales

Estado
: Publicado

Fecha de publicación
: 2023-06

Etapa
: Norma Internacional para revisar [90.92]
Edición
: 1

Número de páginas
: 25
Comité Técnico :
ISO/TC 61/SC 9

ICS :
83.080.20
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