Process for preparing N-methyldialkylamines from secondary...

Details Process for preparing N-methyldialkylamines from secondary... Process for preparing N-methyldialkylamines from secondary...

2006-01-03

2006-01-03

Davis, Brian (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C564S472000, C564S473000

Reexamination Certificate

active

06982352

ABSTRACT:
The present invention relates to a process for preparing N-methyldialkyl-amines by reacting secondary dialkylamines with formaldehyde at a temperature of from 100 to 200° C., by using from 1.5 to 3 mol of formaldehyde per mole of secondary dialkylamine and degassing the resulting reaction product, removing the aqueous phase and distilling the organic phase.

REFERENCES:
patent: 2298284 (1942-10-01), Emerson
patent: 3025313 (1962-03-01), Gunderson
patent: 3136765 (1964-06-01), Dimroth et al.
patent: 3136819 (1964-06-01), Pilch et al.
patent: 3210349 (1965-10-01), Godfrey
patent: 4190601 (1980-02-01), Decker et al.
patent: 4757144 (1988-07-01), Okabe et al.
patent: 4952734 (1990-08-01), Weber et al.
patent: 5091584 (1992-02-01), Brake
patent: 5091585 (1992-02-01), Su et al.
patent: 5457233 (1995-10-01), Ouziel
patent: 5773658 (1998-06-01), Weber et al.
patent: 6252071 (2001-06-01), Muller et al.
patent: 2002/0169313 (2002-11-01), Gao et al.
patent: 80 520 (1895-03-01), None
patent: 287802 (1915-10-01), None
Blicke et al., Journal of the American Chemical Society (1939), vol. 61, pp. 93-95.
Eschweiler, Berichte (1905), vol. 38 pp. 880-882.
Plochl, Berichte (1888), vol. 21, pp. 2117-2119.

Affiliated with

Also associated with

Rating

Process for preparing N-methyldialkylamines from secondary... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing N-methyldialkylamines from secondary..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing N-methyldialkylamines from secondary... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3600844