Novel polyalkylpiperidyl-ureas and their use as stabilizers
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United States of America Patent
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Oct 25, 1983
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N/A
app pub date -
Feb 23, 1982
filing date -
Jun 21, 1979
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Expired
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Abstract
Polyalkylpiperidyl-ureas of the formula I ##STR1## in which m is 1-4, X, R.sup.2 and R.sup.3 are monovalent substituents and R.sup.1 is a m-valent radical, can be prepared from the corresponding 4-aminopiperidines by reaction with carbamoyl chlorides. They are outstanding stabilizers for plastics, and especially for polyolefins, to protect them against degradation by the action of light.
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