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HAL linker

Carter et al. [402] have addressed the chemical assessment of automotive clearcoats (usually melamine-cross-linked systems), which requires evaluation of the cross-linker type, HALS and UV absorbers. Coating systems require a variety of chemical analytical techniques for their evaluation [403], including UV microspectroscopy [402, 404], /xFTIR [402,405], /xRS [406,407], NMR [408], ESR [409], ToF-SIMS [410,411] and hydroperoxide titration [412]. Ideally, what is needed for industrial evaluation purposes is a set of techniques that can follow chemical changes in individual layers of a full automotive paint system, typically consisting of 45 /xm clearcoat, 25 /xm basecoat, 35 /xm primer, and 35 /xm E-coat on metal. The clearcoat must shield underlayers from UV. Unlike the case for IR radiation, examination of 30 /xm and thinner clearcoat layers with 0.3 to 0.4 /xm radiation lends itself quite well to the use of microscopes and microspectroscopic techniques. UV microspectroscopy of 10 /xm paint system cross-sections is the method of choice cfr. also Chp. 1.1). UV microspectroscopy... [Pg.520]

Scheme 44 Some possibilities of the T1 triazene linker (Do = electron-donating group, EWG = electron-withdrawing group, Nu = Hal, N3, OAc. ..)... Scheme 44 Some possibilities of the T1 triazene linker (Do = electron-donating group, EWG = electron-withdrawing group, Nu = Hal, N3, OAc. ..)...
See other pages where HAL linker is mentioned: [Pg.139]    [Pg.42]    [Pg.549]    [Pg.266]    [Pg.453]    [Pg.454]    [Pg.10]    [Pg.393]    [Pg.381]    [Pg.139]    [Pg.42]    [Pg.549]    [Pg.266]    [Pg.453]    [Pg.454]    [Pg.10]    [Pg.393]    [Pg.381]    [Pg.185]    [Pg.167]    [Pg.11]    [Pg.408]    [Pg.257]    [Pg.160]    [Pg.7]   
See also in sourсe #XX -- [ Pg.42 ]

See also in sourсe #XX -- [ Pg.393 ]



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