Light stabilizers based on sterically hindered amines

Details Light stabilizers based on sterically hindered amines Light stabilizers based on sterically hindered amines

1997-07-31

1999-07-06

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546224, 546190, C07D21140, C07D21156

Patent

active

059199334

ABSTRACT:
The present invention relates to novel UV stabilizers of the formula (I) ##STR1## where the substituents are as defined in the description. These compounds are highly suitable for stabilizing organic material, such as plastics, surface coatings, paints and oils, against the action of light, radiation, oxygen and heat.

REFERENCES:
patent: 4314933 (1982-02-01), Berner
patent: 5739135 (1998-04-01), Biller et al.
European Search Report.
XP002037628 Ligner G. & Malik J.: "How to increase HALS persistence in polyolefins without jeopardising stabilization efficiency" ADDCON 96: Worldwide Addit. Polymer Modif. Conference, Book PAP., Paper 7, May 21, 1996, pp. 1-8.
XP000691399 Malik J. et al.: "Polymer bound HALS--expectations and possibilities" Die Angewandte Makromolekulare Chemie, Bd. 247, May 1997, pp. 147-161 & Paper Presentation: Eighteenth Annual International Conference on Advances in the Stabilization and Degradation of Polymers, Jun. 19-Jun. 21, 1966, Luzern, Switzeralnd.
XP000635466 Anonymous: "Polymer Stabilizers" Research Disclosure, Bd. 389, Nr. 38910, Sep. 1996, pp. 541-545.
XP000533985 Step E.N. et al.: "Model Studies on the Mechanism of Hals Stabilization" Die Angewandte Makromolekulare Chemie, Bd. 232, Oct. 1, 1995, pp. 65-83.

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