Oxopiperazinyl derivatives and light stabilized compositions

Details Oxopiperazinyl derivatives and light stabilized compositions Oxopiperazinyl derivatives and light stabilized compositions

C - Chemistry, Metallurgy

07

D

C07D 241/08 (2006.01) C07D 241/18 (2006.01) C07D 241/52 (2006.01) C07D 249/18 (2006.01) C07D 251/26 (2006.01) C07D 251/54 (2006.01) C07D 403/12 (2006.01) C07D 403/14 (2006.01) C07D 405/12 (2006.01) C07D 405/14 (2006.01) C07D 407/14 (2006.01) C07D 409/12 (2006.01) C07D 409/14 (2006.01) C07D 417/14 (2006.01) C08F 20/36 (2006.01) C08G 63/685 (2006.01) C08G 65/22 (2006.01) C08G 73/06 (2006.01) C08G 83/00 (2006.01) C08J 3/20 (2006.01) C08K 5/07 (2006.01) C08K 5/34 (2006.01) C08K 5/3462 (2006.01) C08K 5/3477 (200

Patent

CA 2260568

Compounds of the formula (I) Image wherein p is zero or 1; q and r, independently of each other, are an integer from 1 to 6; and s is a number ranging from 1 to 8; X is -O- or, when p is 1, X is also a group Image ; Rw, Rx, Ry and Rz are, independently of each other, C1-C18alkyl, C5- C12cycloalkyl or C1-C5hydroxyalkyl, especially methyl; R1 is hydrogen; C1-C18alkyl; oxyl; OH; CH2CN; C1-C18alkoxy; C5-C12cycloalkoxy; C3-C8alkenyl; C3-C8alkynyl; C7-C12phenylalkyl; C7-C15phenylalkyl, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; C7-C15phenylalkoxy; C7-C15phenylalkoxy, which is substituted on the phenyl ring by 1, 2 or 3 radicals selected from C1-C4alkyl and C1-C4alkoxy; or R1 is C1-C8alkanoyl; C3- C5alkenoyl; C1-C18alkanoyloxy; glycidyl; or a group -CH2CH(OH)-G, in which G is hydrogen, methyl or phenyl; R2 is hydrogen, C1-C8alkyl, C5-C12cycloalkyl or C1-C4hydroxyalkyl; R3, R4, R5 independently of each other are hydrogen, C1-C8alkyl or C5- C12cycloalkyl; and W and other residues are as described in claim 1, are effective stabilizers for organic materials, for example thermoplastic organic polymers, coating compositions or photographic materials.

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