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US 2010/0144935 A1Published application
Symmetric azo compounds in flame retardant compositions
AssigneeCiba Corporation
InventorsMichael Roth, Rudolf Pfaendner, Carl-Eric Wilen, Melanie Aubert
Life of this patent
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Abstract
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.
Claims8
A compound of the formula
- Wherein
- R represents C1-C20alkyl, hydroxy-C2-C8alkyl, C1-C20alkanoyl, C7-C13aroyl, C2-C20alkenyl, C1-C20alkyl or C2-C20alkenyl interrupted by at least one heteroatom selected from the group consisting of O, S and N, C6-C20aryl, C1-C12alkyl-C6-C20aryl, C6-C20aryl, C6-C20aryl-C1-C4alkyl, mono- or bicyclic C5-C20cycloalkyl, mono- or bicyclic C1-C12alkyl-C5-C20cycloalkyl, or mono- or bicyclic C5-C20cycloalkyl-C1-C4alkyl;
- R1, R2, R3 and R4 independently of one another represent hydrogen or C1-C3alkyl;
- R5 represents hydrogen or methyl;
- and
- R′, R1′, R2′, R3′, R4′ and R5′ are as defined as R, R1, R2, R3, R4 and R5.
3 more elements
A composition, which comprises
- c) A polymer substrate and
- d) A compound of the formula
- Wherein
- R represents C1-C20alkyl, hydroxy-C2-C8alkyl, C1-C20alkanoyl, C2-C20alkenyl, C1-C20alkyl or C2-C20alkenyl interrupted by at least one heteroatom selected from the group consisting of O, S and N, C2-C20alkinyl, C5-C20aryl, C1-C12alkyl-C5-C20aryl, C5-C20aryl-C1-C4alkyl, mono- or bicyclic C5-C20cycloalkyl, mono- or bicyclic C1-C12alkyl-C5-C20cycloalkyl, or mono- or bicyclic C5-C20cycloalkyl-C1-C4alkyl;
- R1, R2, R3 and R4 independently of one another represent hydrogen or C1-C3alkyl;
- R5 represents hydrogen or methyl;
- and
- R′, R1′, R2′, R3′, R4′ and R5′ are as defined as R, R1, R2, R3, R4 and R5.
5 more elements
Dependencies are inferred from the claim text.