65402-65-5Relevant articles and documents
Hindered piperidyl light stabilizers
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, (2008/06/13)
Piperidine-4-carboxylic acid derivatives of the formula STR1 wherein: R2 is hydrogen, alkyl having from one to four carbon atoms, or oxyl; R3 is --XR5 or --CN; R4 is alkylene having from two to twelve carbon atoms; cycloalkylene having from three to twelve carbon atoms; arylene having from six to twelve carbon atoms; or aralkylene having from seven to twelve carbon atoms; R5 is hydrogen, alkyl having from one to twenty carbon atoms, cycloalkyl having from five to six carbon atoms; or alkenyl having from three to twenty carbon atoms; or STR2 X is --O-- or --NH--; and n is 0 to 10; and the acid addition salts thereof.