Compositions – Light transmission modifying compositions – Ultraviolet
Reexamination Certificate
2009-11-03
2011-11-08
Choi, Ling (Department: 1761)
Compositions
Light transmission modifying compositions
Ultraviolet
C252S400310, C106S287100, C106S287140, C427S164000, C427S204000, C427S387000, C428S412000, C428S429000, C428S447000, C524S588000, C524S858000, C524S859000, C525S266000, C528S012000, C528S021000, C528S029000, C556S436000
Reexamination Certificate
active
08052900
ABSTRACT:
A mixture of a benzophenone derivative having hydroxyl and alkoxysilyl groups and a benzophenone derivative having silyloxy and alkoxysilyl groups provides a reactive UV absorber which is unlikely to gel, stable during shelf storage, and curable. A coating solution comprising the UV absorber cures at room temperature to form a UV-screening film which has adhesion to glass and plastic substrates, scratch resistance, and bleed resistance, and maintains a UV-screening function over time.
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Friedrich et al., “Synthesis and Test of Styrene-Cyclosiloxane and Butadiene-Cyclosiloxane Block Copolymers Containing Ultraviolet (UV) Absorber and Antioxidant Groups”, Journal of Inorganic and Organometallic Polymers, 1991, vol. 1, No. 3, pp. 397-415.
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Ahvazi Bijan
Birch & Stewart Kolasch & Birch, LLP
Choi Ling
Shin-Etsu Chemical Co. , Ltd.
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