Projekta Nr.ISO 4504:2023
Nosaukums<p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">This document specifies two methods for the determination of co-monomer contents of polyethylene products by solution state <sup>13</sup>C-NMR spectrometry (nuclear magnetic resonance spectrometry):</span></p> <p class="ListContinue1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">—<span style="mso-tab-count: 1;">    </span>method A: inverse gated decoupling method.</span></p> <p class="ListContinue1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">—<span style="mso-tab-count: 1;">    </span>method B: insensitive nuclei enhanced by polarization transfer method;</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">This document is applicable to copolymers of ethylene having a content of other 1-olefinic monomers of less than a mass fraction of 50 %.</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">This document is not applicable to ethylene homopolymers or copolymers in which ethylene is polymerized with two or more type 1-olefin comonomers.</span></p>
Reģistrācijas numurs (WIID)80039
Darbības sfēra<p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">This document specifies two methods for the determination of co-monomer contents of polyethylene products by solution state <sup>13</sup>C-NMR spectrometry (nuclear magnetic resonance spectrometry):</span></p> <p class="ListContinue1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">—<span style="mso-tab-count: 1;">    </span>method A: inverse gated decoupling method.</span></p> <p class="ListContinue1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">—<span style="mso-tab-count: 1;">    </span>method B: insensitive nuclei enhanced by polarization transfer method;</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">This document is applicable to copolymers of ethylene having a content of other 1-olefinic monomers of less than a mass fraction of 50 %.</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: DengXian;">This document is not applicable to ethylene homopolymers or copolymers in which ethylene is polymerized with two or more type 1-olefin comonomers.</span></p>
StatussStandarts spēkā
ICS grupa83.080.20