Method and apparatus for producing...

Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing

Reexamination Certificate

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C564S475000

Reexamination Certificate

active

07977513

ABSTRACT:
An amine producing apparatus includes a reactor that reacts a mono-lower-alkylamine and an alkylene oxide, an unreacted-raw-material-recovery distillation column that separates unreacted raw materials by distillation from a product including unreacted raw materials obtained in the reactor, a non-aqueous distillation column that removes water and a light component by a distillation method from a reactive product from which unreacted raw material have been separated, and a purification and distillation column that separates by distillation a desired reactive product (mono-lower-alkylmonoalkanolamine) and residue (mono-lower-alkyldialkanolamine which is a dimer) from a reactive product from which the water and the light component have been removed.

REFERENCES:
patent: 4119640 (1978-10-01), Hodakowski et al.
patent: 4119670 (1978-10-01), Tsuchiya
patent: 6846959 (2005-01-01), Garg et al.
patent: 59-13751 (1984-01-01), None
patent: 7-33718 (1995-02-01), None
patent: 7-48327 (1995-02-01), None
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patent: 8-333310 (1996-12-01), None
patent: 2000-204065 (2000-07-01), None
patent: 2004-275933 (2004-10-01), None
patent: 2007-217344 (2007-08-01), None
International Search Report of PCT/JP2007/065354, date of mailing Sep. 11, 2007.
Oda, Ryohei et al.; Surface Active Agent, 1965, pp. 262-263.

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