EIN IN-LINE VERFAHREN ZUR BESTIMMUNG DES ANTEILS VON RÜCKSTÄNDEN EINES ISOCYANATES
摘要
<p>An in-line spectrometric method for determining the distillation residue content in an opaque, dark-colored mixture containing an isocyanate and tar-like materials (residue) during the isocyanate production process. A probe capable of directing light at wavelengths of from 1050 to 2150 nm is inserted in a stream of the residue-containing mixture and light is transmitted through the stream. Light absorption data is collected and a near-infrared spectrum is generated. The residue content is then determined using a chemometric model. Knowledge of the residue content makes it possible to control and optimize the distillation process.</p>
申请公布号
DE69930121(T2)
申请公布日期
2006.11.02
申请号
DE1999630121T
申请日期
1999.06.29
申请人
BAYER CORP.
发明人
HUNT, N.;ALLEN, F.;JACKSON, A.;SCHAREIN, PETER;RYAN, J.;MACNAUGHTAN, DONALD, JR.;SOMMER, KLAUS;PHILYAW, E.