C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
400/7087, 260/17
C07D 211/36 (2006.01) C07D 211/46 (2006.01) C07D 211/58 (2006.01) C07D 211/66 (2006.01) C07D 211/94 (2006.01) C07D 221/20 (2006.01) C07D 401/12 (2006.01) C08F 4/04 (2006.01) C08F 8/30 (2006.01) C08K 5/3435 (2006.01)
Patent
CA 2012506
Compounds which contain an azo group as well as a hindered amine light stabilizer moiety of low basicity function as free radical polymerization initiators and provide a polymer containing a hindered amine stabilizer chemically bonded to said polymer. The low basicity of the instant compounds prevents interaction with acid catalysts used in some polymerization systems. The compounds have the formula I E1-N=N-E2 (I) where E1 is a radical of the formula (see formula I or II) wherein R1 and R2 are, for example, C1-C36 alkyl, G1 and G2 are, for example, C1-C4 alkyl, T is, for example, formyl, and E2 may be the same as E1 or may be, for example, C1-C36 alkyl, with the proviso that at least one of E1 and E2 comprises the moiety (see formula I)
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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