Chemistry: analytical and immunological testing – Nitrogen containing – Amine and quaternary ammonium
Patent
1995-05-17
1996-06-25
Warden, Jill
Chemistry: analytical and immunological testing
Nitrogen containing
Amine and quaternary ammonium
436111, G01N 3012
Patent
active
055299350
ABSTRACT:
A process for determining the organoamines concentrations in chlorosilane. The process comprises separating a mixture comprising as a major portion a chlorosilane and as minor portion an organoamine having a boiling point less than or about the boiling point of the chlorosilane, where the organoamine is complexed in situ in the chlorosilane to form an organoamine complex which vaporizes at a temperature greater than the boiling point temperature of the chlorosilane, into a vapor phase comprising the chlorosilane and a solid phase comprising the organoamine complex. An aqueous solution of the solid phase is formed and analyzed by ion exchange chromatography for organoamine content. The present invention is particularly useful for analyzing chlorosilanes for dimethylamine and trimethylamine where the chlorosilane or residual hydrogen chloride in the chlorosilane serves to complex the organoamine.
REFERENCES:
patent: 3928542 (1975-12-01), Bakay
patent: 3968199 (1976-07-01), Bakay
patent: 4113845 (1978-09-01), Litteral
patent: 4242097 (1980-12-01), Rich, Jr. et al.
patent: 4255348 (1981-05-01), Herdle et al.
patent: 4395389 (1983-07-01), Seth
patent: 4548917 (1985-10-01), Lepage et al.
patent: 4595775 (1986-06-01), Arkles
patent: 4927616 (1990-05-01), Marlett
patent: 5045621 (1991-09-01), Suzuki
patent: 5118485 (1992-07-01), Arvidson et al.
Bernstein, On the Mechanism of Interaction between Tertiary Amines and Trichlorosilanes, J of Amer. Chem. Soc 1992, 3, 1970 pp. 699-700.
Benkeser et al. , Evidence of the Existense of the Trichlorosilyl Anion, J of Amer. Chem. Soc. 1992, 3, 1970, pp. 697-698.
Bouyoucos, Analytical Chemistry 49:401-403, (1977).
Buechele et al., Anal. Chem. 54:2114-2115, (1982) pp. 2113-2114 Am.
Bouyoucos et al., Am. Ind. Hyg. Assoc. J. 44:119-122, (1983).
Gilbert et al., Anal. Chem. 56:106-109. (1984).
Daigle et al., Chromatographia 32:143-147, (1991).
Burg, J. Am. Chem. Soc. 76:2674-2675, (1954).
Ring et al., J. Am. Chem. Soc. 93:265-267, (1971).
Jeng et al., Inorg. Chem. 29:837-842, (1990).
Brink Robert G.
Muller David M.
Reggio Guy L.
Boley William F.
Hemlock Semiconductor Corporation
Markoff Alexander
Warden Jill
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