3-Alkyl-4-oxo-imidazolidines and their 1-oxyls

Details 3-Alkyl-4-oxo-imidazolidines and their 1-oxyls 3-Alkyl-4-oxo-imidazolidines and their 1-oxyls

1974-06-05

1976-07-27

Love, Ethel G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

2603097, C08K 500, C07D 4934

Patent

active

039717577

ABSTRACT:
2,2,5,5-Tetraalkyl- and 2,5-Dispiroalkylene-4-oxoimidazolidines which are substituted in 3-position by mono- to tetravalent radicals, are exellent light-stabilizers for organic polymers. They possess a higher compatibility with organic polymers than the corresponding imidazolines unsubstituted in 3-position, from which they may synthesized by reactions known for N-substitution. The preferred substituents in 3-position are alkyl, alkylene, alkenyl, aralkyl and esteralkyl groups.
The 1-nitroxyls derived from the imidazolidines by oxidation with hydrogen peroxide or percarboxylic acids too are good light stabilizers.

REFERENCES:
patent: 3205195 (1965-09-01), Cook
patent: 3448074 (1969-06-01), Kitaoka et al.
patent: 3532703 (1970-10-01), Murayama et al.
patent: 3645965 (1972-02-01), Murayama et al.
patent: 3769259 (1973-10-01), Chalmers

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