公开(公告)号：ZA805102B

公开(公告)日：1981-09-30

申请号：ZA805102

申请日：1980-08-20

Applicant: HOECHST AG

Inventor： PFAHLER G ,  WIEZER H ,  NOWY G ,  HAEBERLEIN H

IPC: C08K5/00 ,  C07D221/00 ,  C07D263/00 ,  C07D498/10 ,  C08K5/3442 ,  C08K5/35 ,  C08K5/353 ,  C08L23/00 ,  C08L101/00 ,  C07D

Abstract: The invention provides derivatives of polyalkyl-1-oxa-diaza-spirodecanes prepared from compounds of the formula in which X is and mono- or dihalo-hydrocarbons by alkylation at the nitrogen atom of the 5-membered ring, and the salts thereof. The novel compounds are migration-resistant light stabilizers of low volatility for synthetic polymers.

公开(公告)号：ZA8005102B

公开(公告)日：1981-09-30

申请号：ZA8005102

申请日：1980-08-20

Applicant: HOECHST AG

Inventor： PFAHLER G ,  WIEZER H ,  NOWY G ,  HAEBERLEIN H

IPC: C08K5/00 ,  C07D498/10 ,  C08K5/3442 ,  C08K5/35 ,  C08K5/353 ,  C08L23/00 ,  C08L101/00 ,  C07D

CPC classification number: C07D498/10 ,  C08K5/35

公开(公告)号：DK589875A

公开(公告)日：1976-06-28

申请号：DK589875

申请日：1975-12-23

Applicant: HOECHST AG

Inventor： MAUZ O ,  MAYER N ,  NOWY G

IPC: C07C69/72 ,  B01J31/00 ,  C07C67/343 ,  C07C69/732 ,  C07C69/76 ,  C07D311/76 ,  C07G99/00 ,  C07C

Abstract: When replacing the low molecular mercaptan used as a catalyst in the known process for preparing condensation products of phenols and acetoacetic acid esters by an n-alkyl mercaptan having of from 8 to 20 carbon atoms, the yield is improved and the reaction time reduced, while the working up of the reaction batch is simultaneously improved.