Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1987-03-20
1988-09-20
Bond, Robert T.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546 13, 546 14, 546 16, 546 22, 546187, 546190, 546248, 548209, 548212, 524100, 524102, 524 99, C07D21194, C08K 534
Patent
active
047727080
ABSTRACT:
Derivatives of 4-hydroxy-methyl-piperidine having general formula: ##STR1## wherein: R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be alkyl or may form, with the carbon they are bound to, a cycloalkyl group or the group ##STR2## with R.sub.6, R.sub.7, R.sub.8 and R.sub.9 being hydrogen or alkyl; R.sub.5 may be H, alkyl, aryl, alkenyl, etc.; Y may be an organic or inorganic group or atom having a valence from 1 to 4 and n is an integer from 1 to 4.
The use of the derivatives of the alkyl-substituted 4-hydroxy-methyl-piperidine of formula (I) as stabilizers of polymeric substances, and polymeric compositions stabilized with said piperdine derivatives.
This invention relates to new derivatives of alkyl-substituted 4-hydroxy-methyl-piperidine, to the use thereof as stabilizers of polymeric substances usually subject to worsening owing to thermal and/or photo-oxidation, and to the polymeric compositions stabilized with said derivatives.
REFERENCES:
patent: 3840494 (1974-10-01), Murayama et al.
Di Battista Piero
Nucida Gilberto
Ausimont S.p.A.
Bond Robert T.
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