C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/303, 260/308
C07D 271/10 (2006.01) C07D 249/08 (2006.01) C07D 263/32 (2006.01) C07D 271/107 (2006.01) C07D 285/12 (2006.01) C08K 5/00 (2006.01) C08K 5/3445 (2006.01) C08K 5/3472 (2006.01) C08K 5/35 (2006.01) C08K 5/47 (2006.01)
Patent
CA 1052796
ABSTRACT OF THE DISCLOSURE The invention relates to polychromophoric compounds having the formula Image or Image wherein A is a phenyl group; B is a heterocyclic group having the structure Image or Image wherein X is a nitrogen atom or a carbon atom containing an alkyl group containing 1 to 12 carbon atoms: Z is an oxygen atom, a sulfur atom, or a nitrogen atom containing a hydrogen atom or a lower alkyl group having 1 to 12 carbon atoms which have been found to be effective ultraviolet stabilizers. The invention also relates to ultraviolet degradable organic compositions containing a stabilizing amount of the polychromophoric composition to prevent such degrada- tion. These stabilizers are effective in the presence of other additives commonly employed in polymeric compositions including, for example, pigments, colorants, fillers, reinforcing agents and the like. These ultraviolet stabilizers may also be incorporated into the organic compositions in the polymer melt or disolved in the polymer dope, coated on the exterior of the molded article, film or extrided fiber.
234927
Irick Gether (jr.)
Wang Richard H.
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