Hindered amine-substituted dihydropyridines and heat/light stabi

Details Hindered amine-substituted dihydropyridines and heat/light stabi Hindered amine-substituted dihydropyridines and heat/light stabi

1990-10-02

1992-06-23

Ivy, C. Warren

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546194, 546321, C07D21180

Patent

active

051244560

ABSTRACT:
Novel dihydropyridine compounds bearing substituted piperidyl substituents are effective heat/light stabilizers for a wide variety of polymer substrates, e.g., for halopolymers such as PVC, and are also effective anti-UV agents and antioxidants for such polymers as polyolefins, polystyrenes, polyalkadienes, polyurethanes, polyamides, polyesters, polycarbonates, polysulfones, polyethersulfones, polyetherketones, acrylic polymers, or copolymers or mixtures thereof.

REFERENCES:
patent: 4064102 (1977-12-01), Hillard et al.
patent: 4450248 (1984-05-01), Leistner et al.
patent: 4548973 (1985-10-01), Raynor
Schoenaginger et al., "Substituted, 1,4-dihydropyridines . . ." CA 102:9550r (1985).
Prostakov et al., "1,2,5-trimethyl . . ." CA 68:104915x (1968).

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