4-formylaminopiperidine derivatives, their use as stabilizers an

Details 4-formylaminopiperidine derivatives, their use as stabilizers an 4-formylaminopiperidine derivatives, their use as stabilizers an

1988-11-14

1990-12-11

Lee, Mary C.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

544129, 544130, 546 16, 546188, 546190, 546205, 546216, 546220, 546221, 546224, 546242, 546244, 546275, 546278, 546281, 546283, 546284, 252402, C09K 1522, C09K 1526, C07D21140, C07D21156

Patent

active

049768891

ABSTRACT:
4-Formylaminopiperidine derivatives of the formula (I) ##STR1## where n is 1 or 2, R.sup.1 to R.sup.4 are each alkyl or R.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 are tetra- or pentamethylene, R.sup.5 is hydrogen or alkyl, R.sup.6 is hydrogen, unsubstituted or substituted alkyl, alkenyl, aralkyl or acyl, and, when n is 1, Y is hydrogen, unsubstituted or substituted alkyl, alkenyl, cycloalkyl, bicycloalkyl, aralkyl, aryl, alkyl containing heterocyclic radicals, or ##STR2## or, when n is 2, Y is alkylene, cycloalkylene, aralkylene or arylene or is alkylene which is interrupted by oxygen, nitrogen, sulfur or a 5-membered or 6-membered heterocyclic structure, and their acid addition salts have very good stabilizing properties in plastics.

REFERENCES:
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patent: 3684765 (1972-08-01), Matsui et al.
patent: 3840494 (1974-10-01), Murayama et al.
patent: 3904581 (1975-09-01), Murayama et al.
patent: 4191683 (1980-03-01), Brunetti et al.
patent: 4370430 (1983-01-01), Hoffman
patent: 4459395 (1984-06-01), Cantatore
patent: 4556714 (1985-12-01), Karrer
patent: 4725634 (1988-02-01), Ishii et al.
patent: 4772708 (1988-09-01), DiBattista et al.

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