C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
400/7077, 400/93
C07D 498/10 (2006.01) C07D 498/20 (2006.01) C08K 5/35 (2006.01)
Patent
CA 1111428
Abstract of the disclosure: The invention provides novel 4-carbamoyl derivatives of 1-oxa-3-oxo-4,8-diaza-spiro-??4,5_7-decanes and their preparation from 1 oza-3-ozo-4,8-diaza-spiro-??4,5_7-de- canes and isocyanates. The products are suitable light stabilizers for thermolpastics.
310008
Knorr Harald
Mayer Norbert
Pfahler Gerhard
Wiezer Hartmut
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Hoechst Aktiengesellschaft
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