Piperidine derivatives which are stabilizers for synthetic polym

Details Piperidine derivatives which are stabilizers for synthetic polym Piperidine derivatives which are stabilizers for synthetic polym

1982-09-08

1985-06-25

Kight, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524100, 524103, 544215, 546188, C08K 534, C07D40112

Patent

active

045255032

ABSTRACT:
The invention relates to new piperidine compounds which act as light stabilizers, heat stabilizers and oxidation stabilizers for synthetic polymers, in particular for hydrocarbon polymers. The compounds are piperidinol carbamates of the formula: ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and A have the meanings defined in the description and y is an integer from 1 to 4. In particular, A represents a monovalent to tetravalent radical, always bonded to the carboxy-piperidine radicals via nitrogen atoms.

REFERENCES:
patent: 3640928 (1972-02-01), Murayama et al.
patent: 4075165 (1978-02-01), Soma et al.
patent: 4102858 (1978-07-01), Minagawa et al.
patent: 4315859 (1982-02-01), Nikles

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