Hindered amine light stabilizer hydrazides for stabilizing...

Details Hindered amine light stabilizer hydrazides for stabilizing... Hindered amine light stabilizer hydrazides for stabilizing...

C - Chemistry, Metallurgy

08

G

C08G 73/06 (2006.01) C08G 18/28 (2006.01) C08G 18/38 (2006.01)

Patent

CA 2052914

HINDERED AMINE LIGHT STABILIZER HYDRAZIDES FOR POLYURETHANE STABILIZATION Abstract of the Disclosure Stabilized polyurethanes, polyureas and polyurethane-polyurea polymers having hindered amine light stabilizers (HALS) bonded thereto by means of a hydrazide functionality attached to the HALS are provided. The synergistic effect of a second amide functional group in the HALS-hydrazide provides improved photostabilization efficiency as compared to HALS-hydrazides of the prior art.

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