Process for preparing nitrogen compounds

Details Process for preparing nitrogen compounds Process for preparing nitrogen compounds

1978-07-24

1982-05-04

Trousof, Natalie

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

Organic compounds

Carboxylic acid esters

252609, C07C 4561

Patent

active

043283578

ABSTRACT:
(Cyclo)alkylenediammonium compounds corresponding to the formula: ##STR1## wherein X is halogen, R is an alkylene or cycloalkylene group containing 2-15 carbon atoms, each R' alone is an alkyl, cycloalkyl, or aralkyl group, and R'-R' together represent an alkylene, cycloalkylene, or aralkylene group are prepared by esterifying a tetrahalophthalic anhydride with a mono- or dihydroxyalkane, -cycloalkane, or -aralkane having a boiling point below 250.degree. C. to form a half-ester and then reacting the half-ester with a stoichiometric amount of a diaminoalkane or diaminocycloalkane containing 2-15 carbon atoms.
The (cyclo)alkylenediammonium compounds of the invention are useful as flame retardants for normally flammable organic polymers and also have utility as intermediates for the preparation of N,N'-(cyclo)alkylene-bis-tetrahalophthalimides, which are also useful as flame retardants. The imides are prepared simply by heating the diammonium compounds.

REFERENCES:
patent: 4092345 (1978-05-01), Wolford et al.
Matsuda et al., Japanese Kokai 76 16607 as cited in Chem. Abstracts 85, 20871t (1976).
Hattori, Japanese 22, 479 (65) as cited in Chem. Abstracts 64 3757g (1966).

Affiliated with

Also associated with

Rating

Process for preparing nitrogen compounds 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 nitrogen compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing nitrogen compounds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-882678