| 摘要 |
<p>There are disclosed new polymers of piperidine having the general formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="36" wi="52" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>in which R<Sub>1</Sub>, R<Sub>2</Sub>, R<Sub>3</Sub>, R<Sub>4</Sub>, each independently of the others, are an alkyl radical having 1 to 4 C, or R, and R<Sub>2</Sub>, and/or R<Sub>3</Sub> and R<Sub>4</Sub> form a cycloalkylene radical having 3 to 12 C, R<Sub>5</Sub> is hydrogen, an alkyl, oxyalkyl or alkoxy radical having 1 to 6 C, or an aryl or an aryl-alkyl radical having 6 to 18 C, an alkenyl radical having 2 to 6 C or a -(CH<Sub>2</Sub>)<Sub>x</Sub>-CO<Sub>2</Sub>-R<Sub>7</Sub> radical in which X is a number from 0 to 12, and R<Sub>1</Sub> = H, a metal, an alkyl, alkylene, alkenyl, alkenylene radical containing 1 to 20 C; R<Sub>6</Sub> = H or an alkyl having 1 to 4 C and n is an integer from 2 to 100.</p><p>Use of the piperidine polymers having general formula (I) as stabilizers of polymeric substances, and polymeric compositions stabilized with said piperidine derivatives are also disclosed.</p> |
