1-Oxa-4,8-diazaspiro[4,5]decanes and polymers stabilized against UV
申请人:Hoechst Aktiengesellschaft
公开号:US04107139A1
公开(公告)日:1978-08-15
New 1-oxa-4,8-diazaspiro[4,5]decanes are prepared by reacting a dimethyl-dialkyl-piperidone with an .alpha.-hydroxyamide in the presence of a condensation catalyst. The compounds can be used as UV stabilizers for polymers.