Piperidine compounds for use as light stabilizers, heat stabiliz

Details Piperidine compounds for use as light stabilizers, heat stabiliz Piperidine compounds for use as light stabilizers, heat stabiliz

1990-05-14

1991-06-25

Morgan, Kriellion

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524100, 524102, 524103, 546186, 546190, 546223, 546224, C08K 53435, C07D21158

Patent

active

050267493

ABSTRACT:
The novel compounds of the formula (I) ##STR1## in which n is 1 or 2, R.sub.1 is hydrogen, O.multidot., OH, NO, CH.sub.2 CN, C.sub.1 -C.sub.8 -alkyl, allyl, benzyl, hydroxyalkyl, alkoxy, cycloalkoxy or acyl, R.sub.2 is alkyl, cycloalkyl, phenylalkyl, alkoxyalkyl, tetrahydrofurfuryl or a group of the formula (II) and A is a monovalent or divalent moiety, in which R.sub.1 is as defined above, and, if n=1, A is a group of the formula (III) in which each R.sub.9 independently is hydrogen or methyl, r is zero or 1 and are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials.

REFERENCES:
patent: 4500662 (1985-02-01), Lai
patent: 4578454 (1986-03-01), Cantatore
patent: 4618634 (1986-10-01), Cantatore et al.
Chem. Abst. 91, 92571s (1979).
Derwent 17983c/10 =Russian 670,588.

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