Substituted piperazine diones and polymeric compositions stabili

Details Substituted piperazine diones and polymeric compositions stabili Substituted piperazine diones and polymeric compositions stabili

1975-11-19

1977-09-27

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260268DK, 260 458N, C07D24108

Patent

active

040511375

ABSTRACT:
Substituted piperazine diones are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds are prepared by the alkylation reaction between a substituted piperazine dione and an organic halide. Polymeric compositions containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is 15,15'-dodecamethylenebis(7,15-diazadispiro[5,1,5,3]hexadecane-14,16-dione ).

REFERENCES:
patent: 3318876 (1967-05-01), Cignarella et al.
patent: 3549396 (1970-12-01), Dietz
patent: 3928357 (1975-12-01), Ramey et al.
Sudo et al., Bull. Chem. Soc., Japan 36 (1), pp. 34-37, (1963).

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