Alkyl alkanoate derivatives of substituted piperazine-diones and

Details Alkyl alkanoate derivatives of substituted piperazine-diones and Alkyl alkanoate derivatives of substituted piperazine-diones and

1976-07-02

1978-01-10

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 457PH, 260 458NT, 260 4585B, 260 775SS, 260268DK, 260268TR, C08K 534, C08K 552, C08K 513

Patent

active

040678482

ABSTRACT:
Alkyl alkanoate derivatives of substituted piperazinediones are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds may be formed by reacting a substituted piperazinedione with an acrylate or a crotonate, or reacting the alkali or alkaline earth salt of a substituted piperazine dione with a haloalkanoate. Polymeric 7,15-diazadispiro[containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is n-octadecyl-.beta.-(15{7,15-diazadispiro[5,1,5,3]hexadecane-14,16-dione}pr opionate.

REFERENCES:
patent: 3968078 (1976-07-01), Ramey et al.

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