Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-01-25
2005-01-25
Stockton, Laura L. (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
06846929
ABSTRACT:
Compounds which have a benzotriazole and a hindered amine moiety in the same molecule are typified by the formula Awherein at least one of G2, R1or R2contains a hindered amine moiety are extremely effective light stabilizers having both the UV absorbing activity of a benzotriazole and the light stabilizing efficacy of a hindered amine in the same molecule. These compounds are effective stabilizers for thermoset resin compositions, thermoplastic resin compositions, for photographic applications, for pigmented or dyed polypropylene, polyamide or polyester fibers, and for white, dyed, dipped, unscented and/or scented candle wax against discoloration and fading when incorporated therein alone or in combination with an antioxidant.
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Hall Luther A. R.
Hendricks-Guy Carmen
Lau Jacqueline
Pastor Stephen D.
Puglisi Joseph S.
Ciba Specialty Chemicals Corporation
Stevenson Tyler A.
Stockton Laura L.
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