1-Oxa-3,8-diazaspiro[4.5]decanes

Details 1-Oxa-3,8-diazaspiro[4.5]decanes 1-Oxa-3,8-diazaspiro[4.5]decanes

1981-12-18

1983-10-04

Bond, Robert T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

524 99, C07D40504

Patent

active

044080514

ABSTRACT:
Compounds obtained by the addition of unsaturated esters to the >NH group of compounds of formula II ##STR1## are useful as light stabilizers for polymeric materials, particularly for thermoplastic polymers and automotive finishes. Preferred compounds are those in which R, R.sub.1 and R.sub.2 are all hydrogen and R.sub.3 and R.sub.4 together with the carbon atom to which they are attached form a cyclododecylidene ring.

REFERENCES:
patent: 4107139 (1978-08-01), Mayer et al.
patent: 4110334 (1978-08-01), Mayer et al.
patent: 4247449 (1981-01-01), Wiezer et al.
patent: 4263505 (1981-04-01), Slongo et al.
patent: 4319030 (1982-03-01), Wiezer et al.

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