Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2007-01-02
2007-01-02
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C264S176100, C264S219000, C359S642000, C428S034100, C428S035700, C528S271000
Reexamination Certificate
active
10712606
ABSTRACT:
An ultraviolet absorption composition has been developed for the protection of packaging or container contents in the ultraviolet range of 290 nm to 390 nm, offering effective screening from all wavelengths of solar radiation. A combination of an optical brightener with an ultraviolet absorber has been found to provide effective screening without adding significant color to the polymer composition. This extended range of ultraviolet blocking over what can be achieved with ultraviolet absorbers alone is especially valuable in food and drink packaging applications where the contents of the packages need ultraviolet protection to prevent discoloration or development of undesirable flavors.
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Irick, Jr. Gether
Little, Jr. Rondell Paul
Sharpe, Jr. Emerson Eston
Boshears B. J.
Boykin Terressa
Eastman Chemical Company
Graves, Jr. Bernard J.
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