Method and device for determining the isomer composition in...

Chemistry: analytical and immunological testing – Nitrogen containing – Cyanide or isocyanide

Reexamination Certificate

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C436S055000, C436S106000, C422S062000, C702S027000

Reexamination Certificate

active

07662634

ABSTRACT:
The invention relates to a method for determining the isomer composition in an isocyanate isomer mixture, wherein a spectrum of the isomer mixture is recorded and the spectrum is entered into a chemometric calibration model.

REFERENCES:
patent: 5638284 (1997-06-01), Helmer et al.
patent: 5707870 (1998-01-01), Moessner
patent: 5712481 (1998-01-01), Welch et al.
patent: 5717209 (1998-02-01), Bigman et al.
patent: 5808131 (1998-09-01), Gruenbauer et al.
patent: 6072576 (2000-06-01), McDonald et al.
patent: 6103934 (2000-08-01), Hallinan et al.
patent: 6162644 (2000-12-01), Choi et al.
patent: 6228650 (2001-05-01), Moore et al.
patent: 6294764 (2001-09-01), Lindner et al.
patent: 6300633 (2001-10-01), Hunt et al.
patent: 6339222 (2002-01-01), Kester et al.
patent: 6362366 (2002-03-01), Hallinan et al.
patent: 6552221 (2003-04-01), Hallinan et al.
patent: 2003/0228355 (2003-12-01), Zarif et al.
patent: 2 139 269 (1973-02-01), None
patent: 273 175 (1989-11-01), None
patent: 100 05 130 (2001-08-01), None
patent: 11-350368 (1999-12-01), None
patent: 2000-146835 (2000-05-01), None
patent: 2000-298512 (2000-10-01), None
patent: 00/68664 (2000-11-01), None
Balfour et al, The Infrared and Raman spectra of methoxycarbonyl and thiomethoxycarbonyl isocyanates, Can. J. Chem. 71(10): 1627-1631 (1993).
Kondyurin et al, Vibrational Spectra of some Diisocyanates in the Liquid State or on EPDM-40 Rubber Surface, J. Applied Polymer Sci. 54, 1385-1393 (1994).
ISO/TR 9372: 1993, International Organization for Standardization: Abstract: Plastics—Basic materials of polyurethanes—Determination of the amounts of 2,4-and 2,6-isomers in toluenediisocyanate by infrared spectroscopy.
Allport et al “MDI and TDI: Safety, Health and the Environment”, Wiley, Mar. 28, 2003, pp. 302-303, 312, 324.
J. Near Infrared Spectroscopy, 1, (month unavailable) 1993, pp. 221-245, Jerry Workman, Jr., “A review of process near infrared spectroscopy: 1980-1994”.
Antec, (month unavailable) 1992, pp. 2674-2676, A. Khettry et al, “In-Line Near-Infrared Monitoring of Polymeric Processes”.
J. Applied Polymer Science, vol. 84, (month unavailable) 2002, pp. 2670-2682, Raphael A. M. Vieira et al, “In-Line and In Situ Monitoring of Semi-Batch Emulsion Copolymerizations Using Near-Infrared Spectroscopy”.
Talanta,50 (month unavailable) 1999, pp. 283-290, Thomas Rohe et al, “Near infrared (NIR) spectroscopy for in-line monitoring of polymer extrusion processes”.
Journal of Chemometrics, 14, (month unavailable) 2000, pp. 513-528, Charles E. Miller “Chemometrics for on-line spectroscopy applications—theory and practice”.
J. Chem Inf. Comput. Sci., 40, (month unavailable) 2000, pp. 1093-1100, Olusola O. Soyemi et al, “Multivariate Analysis of Near-Infrared Spectra Using the G-Programming Language”, Also see the Supporting Information Attached.

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