Urea derivatives, process for their manufacture and their use as

Details Urea derivatives, process for their manufacture and their use as Urea derivatives, process for their manufacture and their use as

1979-07-31

1981-01-27

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

546 19, C08K 535, C07D49110, C07D49120

Patent

active

042474493

ABSTRACT:
The amide nitrogen of 9,9-dimethyl-2-oxa-4-oxo-3,8-diazaspiro-(4,5)-decane reacts with isocyanates or diisocyanates to give novel urea derivatives which can be used as light stabilizers for plastic materials.

REFERENCES:
patent: 4107139 (1978-08-01), Mayer et al.
patent: 4110334 (1978-08-01), Mayer et al.

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