  Using the NIRSPEC spectrograph at Keck II, we have obtained infrared echelle
spectra covering the 1.5-1.8 micron range for giant stars in the massive bulge
globular clusters NGC6440 and NGC6441. We report the first high dispersion
abundance for NGC6440, [Fe/H]=-0.56+/-0.02 and we find [Fe/H]=-0.50+/-0.02 for
the blue HB cluster NGC6441. We measure an average $\alpha$-enhancement of
~+0.3 dex in both clusters, consistent with previous measurements of other
metal rich bulge clusters, and favoring the scenario of a rapid bulge formation
and chemical enrichment. We also measure very low 12C/13C isotopic ratios
(~5+/- 1), suggesting that extra-mixing mechanisms are at work during evolution
along the Red Giant Branch also in the high metallicity regime. We also measure
Al abundances, finding average [Al/Fe]=0.45+/-0.02 and [Al/Fe]=0.52+/-0.02 in
NGC6440 and NGC6441, respectively, and some Mg-Al anti-correlation in NGC6441.
We also measure radial velocities vr=-76+/-3 km/s and vr=+14+/-3 km/s and
velocity dispersions sigma=9+/-2 km/s and sigma=10+/-2 km/s, in NGC6440 and
NGC6441, respectively.
