Piperidine derivatives which are stabilisers for synthetic polym

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

1982-08-31

1985-02-26

Foelak, Morton

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

Synthetic resins

Processes of preparing a desired or intentional composition...

529102, 529103, 544215, 544335, 544364, 546187, 546188, C08K 534

Patent

active

045018375

ABSTRACT:
The invention relates to new piperidine compounds which act as light stabilisers, heat stabilisers and oxidation stabilisers 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: 4086207 (1978-04-01), Cassandrini et al.
patent: 4102858 (1978-07-01), Argus
patent: 4118369 (1978-10-01), Minagawa et al.

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