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US 10,865,327 B2Granted
Tintable abrasion resistant compositions
OwnerGerald Treadwayinventor
Life of this patent
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Abstract
A coating composition with a stable shelf-life for forming a transparent coating upon eyeglass lenses or other substrates having improved abrasion resistance and tintability. The composition comprising a silicone-based binder component, a curing agent component, and being substantially free of volatiles. The binder component comprises the partial hydrolysis product of an epoxy-functional alkoxysilane, a polyglycidylether, and an acrylic monomer. The curing agent component comprises a cationic photoinitiator and a free radical photoinitiator.
Claims21
A copolymer coating comprising a copolymer comprising monomer units from:
- a) 3-glycidyloxypropyltrimethoxysilane having a weight percent of 53.6 to 71.6 based on the total weight of the copolymer coating, wherein 30% to 40% of the methoxy groups of the trimethoxysilane moieties of 3-glycidyloxypropyltrimethoxysilane in the copolymer coating have been hydrolyzed to form silanols;
- and
- b) hexanediol diacrylate having a weight percent of 14.3 to 24.9 based on the total weight of the copolymer coating;
- wherein the copolymer coating was cured with a curing energy of 0.1 mJ to 0.5 mJ.
1 more element
Dependencies are inferred from the claim text.