| 摘要 |
<p>A process for producing polyalkylpiperidylamines of the formula (I): (I) wherein R1 is hydrogen or a C1-C12 alkylradical; R2 and R3 are each C1-C5 alkylradicals or R2 and R3, taken together, are -(CH)-a or -CH2-NR1-C(R5,R6)-CH2-; R4 is a C2-C18 alkylene radical, which is unsubstituted or substituted by C1-C3 alkyl; a C5-C12 cycloalkylene radical, which is unsubstituted or is methylsubstituted; a cycloalkylene radical of the formula where the cyclohexyl ring are unsubstituted or are methyl-substituted; or groups of the formula -(CH2)k-X- ¢(CH2)m-X!-n(CH2)p-, where X is -O-, -NH-, -NR5 and R5 and R6 are each a C1-C5 alkyl radical and a is 4 or 5, k is 2 or 3, n is 0-3 and p is 2 or 3; which process involves reductively alkylating an alkylated 4aminopiperidine of the formula (II): with a difunctional alcohol of the formula HO-R4-OH, wherein R1 and R4 have the above definitions.</p> |
