- SYMMETRIC AZO COMPOUNDS IN FLAME RETARDANT COMPOSITIONS
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The invention, relates to azo-compounds of formula (I), wherein >N-O-R substituted 2, 2, 6, 6- tetraalkyl-piperidyl groups are present. These azo-compounds have excellent flame retardant properties, either if applied alone, or combined with other compounds, having flame retardant properties.
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Page/Page column 16
(2008/12/08)
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- Non-migrating 1-hydrocarbyloxy hindered amine derivatives as polymer stabilizers
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1-Hydrocarbyloxy substituted hindered amine compounds which also contain a reactive functional group such as hydroxy, amino, oxirane or carboxyl can be chemically attached to selected polymer substrates by condensation reactions to give polymers containing a chemically-bonded, non-migrating stabilizer having excellent stabilization efficacy for protecting said polymer substrate from the adverse effects of actinic light.
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- O-substituted N-hydroxy hindered amine stabilizers
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Hindered amines based on various 2,2,6,6-tetraalkylated nitrogen-containing heterocyclic moieties wherein the hindered nitrogen atom on the ring is substituted with OR1 substituents and the 4-position of the ring is substituted with a variety of groups, are effective as light stabilizers in diverse substrate systems.
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