Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1993-02-16
1994-10-04
Langel, Wayne
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
2521813, 423265, 423412, C01B 21072, C01C 300
Patent
active
053524241
ABSTRACT:
An aluminum nitride powder that has substantially no ammonia odor after exposure to atmospheric moisture is obtained by admixing the powder with a gettering compound that sublimes or decomposes at a temperature below 500.degree. C. The gettering compound is a C.sub.1 -C.sub.11 aliphatic carboxylic mono- or polyfunctional acid, an anhydride or an ester of such an acid or an anhydride of an aromatic carboxylic acid.
REFERENCES:
patent: 4923689 (1990-05-01), Uenishi et al.
patent: 5098740 (1992-03-01), Tewari
Egashira et al., Chemical Surface Treatments of Aluminum Nitride Powder Suppressing Its Reactivity with Water, J. of Matls. Sci ltrs, 10(1991) 994-996.
Howard Kevin E.
Moyer John R.
Howard Dan R.
Langel Wayne
The Dow Chemical Company
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