Urea derivatives, their preparation, and their use as light stab

Details Urea derivatives, their preparation, and their use as light stab Urea derivatives, their preparation, and their use as light stab

1978-08-21

1980-03-04

Rotman, Alan L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 458N, 260 458NZ, 546 19, C07D49110, C07D49120, C08K 535

Patent

active

041916840

ABSTRACT:
The invention provides novel 4-carbamoyl derivatives of 1-oxa-3-oxo-4,8-diaza-spiro-[4,5]-decanes and their preparation from 1 oxa-3-oxo-4,8-diaza-spiro-[4,5]-decanes and isocyanates. The products are suitable light stabilizers for thermoplastics.

REFERENCES:
patent: 4107139 (1978-08-01), Mayer et al.
Noller "Chemistry of Organic Compounds" 2nd ed., (Saunders) (1957), p. 317.

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