Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1978-01-09
1980-02-05
Schain, Howard E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252403, 260 458N, 260 458NT, 260 458NZ, 260 458SN, 546196, 546198, 546199, C07D21328, C07D21336, C07D21389, C08K 535
Patent
active
041872134
ABSTRACT:
The invention relates to multiheterocyclic compounds which have been found to be effective ultraviolet stabilizers. The invention also relates to ultraviolet degradable organic compositions containing a stabilizing amount of the multiheterocyclic composition to prevent such degradation. 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 dissolved in the polymer dope, coated on the exterior of the molded article, film or extruded fiber.
REFERENCES:
patent: 3197475 (1965-07-01), Carboni
patent: 3431233 (1969-03-01), Murayama et al.
patent: 4046736 (1977-09-01), Hardy
patent: 4089841 (1978-05-01), Lantzsch et al.
Irick, Jr. Gether
Ownby James C.
Wang Richard H. S.
Eastman Kodak Company
Reece III Daniel B.
Schain Howard E.
Tootle Clyde L.
White R. A.
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