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<p>ISO 5478:2006 specifies a method for the determination of the styrene content of all types of styrene-butadiene rubber (SBR), including oil-extended types.</p>
<p>The method is applicable to styrene-butadiene rubbers reinforced with styrene homopolymer, to give the total styrene content. The method is also applicable for determining the styrene in block copolymers containing up to 50 % (by mass) of styrene.</p>
<p>It is applicable to vulcanizates of mixtures of SBR with other polymers (NR, BR, IR and CR) and is considered a method for estimating the SBR content of mixtures, if the styrene content of the SBR is known and provided that no other styrene-containing materials are present.</p>
<p>Any other non-extractable aromatic material which absorbs in the specified spectral region will interfere with this method.</p>
<p>The procedure may give low results when the content of mineral fillers insoluble in nitric acid exceeds 5 % (by mass).</p>
Reģistrācijas numurs (WIID)
43682
Darbības sfēra
<p>ISO 5478:2006 specifies a method for the determination of the styrene content of all types of styrene-butadiene rubber (SBR), including oil-extended types.</p>
<p>The method is applicable to styrene-butadiene rubbers reinforced with styrene homopolymer, to give the total styrene content. The method is also applicable for determining the styrene in block copolymers containing up to 50 % (by mass) of styrene.</p>
<p>It is applicable to vulcanizates of mixtures of SBR with other polymers (NR, BR, IR and CR) and is considered a method for estimating the SBR content of mixtures, if the styrene content of the SBR is known and provided that no other styrene-containing materials are present.</p>
<p>Any other non-extractable aromatic material which absorbs in the specified spectral region will interfere with this method.</p>
<p>The procedure may give low results when the content of mineral fillers insoluble in nitric acid exceeds 5 % (by mass).</p>
